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Subject: Re: setrlimit hangs the process
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--000000000000b3bf010577685670
Content-Type: text/plain; charset="UTF-8"

Hi,

Sorry for the delay. I managed to build a minimal example that only uses
gobpf to load ebpf program into the kernel. Surprisingly, it works fine (it
doesn't hang the process). Here I attach the full strace output:

execve("./muslrlimit/musltest", ["./muslrlimit/musltest"], 0x7ffbffff96b0
/* 65 vars */) = 0
arch_prctl(ARCH_SET_FS, 0xe79100)       = 0
set_tid_address(0xe79138)               = 4454
brk(NULL)                               = 0x2e7c000
brk(0x2e7d000)                          = 0x2e7d000
sched_getaffinity(0, 8192, [0, 1, 2, 3]) = 40
mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7efbff6c1000
mmap(0xc000000000, 67108864, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xc000000000
mmap(0xc000000000, 67108864, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xc000000000
mmap(NULL, 33554432, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0x7efbfd6c1000
mmap(NULL, 2162688, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7efbfd4b1000
mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd4a1000
mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd491000
rt_sigprocmask(SIG_SETMASK, NULL, [], 8) = 0
sigaltstack(NULL, {ss_sp=NULL, ss_flags=SS_DISABLE, ss_size=0}) = 0
sigaltstack({ss_sp=0xc000002000, ss_flags=0, ss_size=32768}, NULL) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
gettid()                                = 4454
rt_sigaction(SIGHUP, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigprocmask(SIG_UNBLOCK, [RT_1 RT_2], NULL, 8) = 0
rt_sigaction(SIGHUP, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGINT, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGINT, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGQUIT, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGQUIT, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGILL, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGILL, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGTRAP, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGTRAP, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGABRT, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGABRT, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGBUS, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGBUS, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGFPE, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGFPE, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGUSR1, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGUSR1, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGSEGV, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGSEGV, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGUSR2, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGUSR2, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGPIPE, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGALRM, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGALRM, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGTERM, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGTERM, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGSTKFLT, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGSTKFLT, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGCHLD, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGURG, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGURG, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGXCPU, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGXCPU, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGXFSZ, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGXFSZ, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGVTALRM, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGVTALRM, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGPROF, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGPROF, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGWINCH, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGWINCH, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGIO, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGIO, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGPWR, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGPWR, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGSYS, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGSYS, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRTMIN, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_1, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_2, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_2, {sa_handler=0x4589b0, sa_mask=~[],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x458a70}, NULL, 8) = 0
rt_sigaction(SIGRT_3, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_3, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_4, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_4, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_5, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_5, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_6, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_6, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_7, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_7, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_8, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_8, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_9, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_9, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_10, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_10, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_11, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_11, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_12, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_12, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_13, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_13, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_14, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_14, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_15, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_15, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_16, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_16, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_17, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_17, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_18, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_18, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_19, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_19, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_20, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_20, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_21, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_21, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_22, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_22, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_23, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_23, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_24, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_24, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_25, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_25, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_26, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_26, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_27, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_27, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_28, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_28, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_29, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_29, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_30, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_30, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_31, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_31, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigaction(SIGRT_32, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_32, {sa_handler=0x4589b0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7dff74}, NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RT_1 RT_2], NULL, 8) = 0
mmap(NULL, 94208, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd47a000
mprotect(0x7efbfd47c000, 86016, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7efbfd490eb8,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x400000,
parent_tidptr=0x7efbfd490f20, tls=0x7efbfd490ee8,
child_tidptr=0x7efbfd490f20) = 4455
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) = 0
mmap(NULL, 94208, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd463000
mprotect(0x7efbfd465000, 86016, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7efbfd479eb8,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x400000,
parent_tidptr=0x7efbfd479f20, tls=0x7efbfd479ee8,
child_tidptr=0x7efbfd479f20) = 4456
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) = 0
mmap(NULL, 94208, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd44c000
mprotect(0x7efbfd44e000, 86016, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7efbfd462eb8,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x400000,
parent_tidptr=0x7efbfd462f20, tls=0x7efbfd462ee8,
child_tidptr=0x7efbfd462f20) = 4457
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
futex(0xc000046bc0, FUTEX_WAKE_PRIVATE, 1) = 1
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) = 0
mmap(NULL, 94208, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd435000
mprotect(0x7efbfd437000, 86016, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7efbfd44beb8,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x400000,
parent_tidptr=0x7efbfd44bf20, tls=0x7efbfd44bee8,
child_tidptr=0x7efbfd44bf20) = 4458
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
readlinkat(AT_FDCWD, "/proc/self/exe", "/tmp/alpine/muslrlimit/musltest",
128) = 31
fcntl(0, F_GETFL)                       = 0x8002 (flags O_RDWR|O_LARGEFILE)
mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7efbfd3f5000
fcntl(1, F_GETFL)                       = 0x8002 (flags O_RDWR|O_LARGEFILE)
fcntl(2, F_GETFL)                       = 0x8002 (flags O_RDWR|O_LARGEFILE)
openat(AT_FDCWD, "/proc/sys/net/core/somaxconn", O_RDONLY|O_CLOEXEC) = 3
epoll_create1(EPOLL_CLOEXEC)            = 4
epoll_ctl(4, EPOLL_CTL_ADD, 3, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET,
{u32=4248805120, u64=139620750696192}}) = 0
fcntl(3, F_GETFL)                       = 0x8000 (flags
O_RDONLY|O_LARGEFILE)
fcntl(3, F_SETFL, O_RDONLY|O_NONBLOCK|O_LARGEFILE) = 0
read(3, "128\n", 65536)                 = 4
read(3, "", 65532)                      = 0
epoll_ctl(4, EPOLL_CTL_DEL, 3, 0xc00009bc74) = 0
close(3)                                = 0
openat(AT_FDCWD, "/proc/version_signature", O_RDONLY|O_CLOEXEC) = -1 ENOENT
(No such file or directory)
openat(AT_FDCWD, "/proc/version", O_RDONLY|O_CLOEXEC) = 3
epoll_ctl(4, EPOLL_CTL_ADD, 3, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET,
{u32=4248805120, u64=139620750696192}}) = 0
fcntl(3, F_GETFL)                       = 0x8000 (flags
O_RDONLY|O_LARGEFILE)
fcntl(3, F_SETFL, O_RDONLY|O_NONBLOCK|O_LARGEFILE) = 0
fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
read(3, "Linux version 4.17.5-1-ARCH (bui"..., 512) = 131
read(3, "", 1405)                       = 0
epoll_ctl(4, EPOLL_CTL_DEL, 3, 0xc0001238e4) = 0
close(3)                                = 0
uname({sysname="Linux", nodename="archrabbit", ...}) = 0
mmap(NULL, 1439992, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7efbfd295000
openat(AT_FDCWD, "/proc/version_signature", O_RDONLY|O_CLOEXEC) = -1 ENOENT
(No such file or directory)
openat(AT_FDCWD, "/proc/version", O_RDONLY|O_CLOEXEC) = 3
epoll_ctl(4, EPOLL_CTL_ADD, 3, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET,
{u32=4248805120, u64=139620750696192}}) = 0
fcntl(3, F_GETFL)                       = 0x8000 (flags
O_RDONLY|O_LARGEFILE)
fcntl(3, F_SETFL, O_RDONLY|O_NONBLOCK|O_LARGEFILE) = 0
fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
read(3, "Linux version 4.17.5-1-ARCH (bui"..., 512) = 131
read(3, "", 1405)                       = 0
epoll_ctl(4, EPOLL_CTL_DEL, 3, 0xc000123544) = 0
close(3)                                = 0
uname({sysname="Linux", nodename="archrabbit", ...}) = 0
bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_PERF_EVENT_ARRAY, key_size=4,
value_size=4, max_entries=1024, map_flags=0, inner_map_fd=0, map_name="",
map_ifindex=0}, 48) = 3
bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_KPROBE, insn_cnt=45,
insns=0xc0001de180, license="GPL", log_level=1, log_size=524288,
log_buf="", kern_version=KERNEL_VERSION(4, 17, 5), prog_flags=0}, 48) = -1
EPERM (Operation not permitted)
prlimit64(0, RLIMIT_MEMLOCK, NULL, {rlim_cur=RLIM64_INFINITY,
rlim_max=RLIM64_INFINITY}) = 0
rt_sigprocmask(SIG_BLOCK, ~[RTMIN RT_1 RT_2], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], NULL, 8) = 0
rt_sigaction(SIGRT_2, {sa_handler=0x7e3132, sa_mask=~[],
sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7dff74}, NULL, 8) = 0
getpid()                                = 4454
gettid()                                = 4454
open("/proc/self/task", O_RDONLY|O_CLOEXEC|O_DIRECTORY) = 5
fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
kill(4454, SIGRT_2)                     = 0
kill(4454, SIGRT_2)                     = 0
kill(4454, SIGRT_2)                     = 0
kill(4454, SIGRT_2)                     = 0
getdents64(5, /* 7 entries */, 2048)    = 168
getdents64(5, /* 0 entries */, 2048)    = 0
close(5)                                = 0
futex(0x7efbfd44b75c, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7efbfd46265c, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7efbfd47965c, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7efbfd49075c, FUTEX_WAKE_PRIVATE, 1) = 1
rt_sigaction(SIGRT_2, {sa_handler=SIG_IGN, sa_mask=~[],
sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7dff74}, NULL, 8) = 0
prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=RLIM64_INFINITY,
rlim_max=RLIM64_INFINITY}, NULL) = 0
futex(0x7efbfd44b75c, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7efbfd46265c, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7efbfd47965c, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7efbfd49075c, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xe79050, FUTEX_WAKE_PRIVATE, 2147483647) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_KPROBE, insn_cnt=45,
insns=0xc0001de180, license="GPL", log_level=1, log_size=524288,
log_buf="", kern_version=KERNEL_VERSION(4, 17, 5), prog_flags=0}, 48) = -1
EPERM (Operation not permitted)
ioctl(2, TCGETS, {B38400 opost isig icanon echo ...}) = 0
write(2, "\33[31mERRO\33[0m[0000] unable to in"..., 143) = 143
exit_group(0)                           = ?
+++ exited with 0 +++

Conversely, the offending binary does not even issue the bpf syscall, which
is quite strange. Once I remove ebpf code from the program, it does start
fine, so I'm prety sure ebpf prog loading is the culpirt here. Here's
strace output:

execve("./agent", ["./agent", "--token=1"], 0x7ffbffff96a8 /* 65 vars */) =
0
arch_prctl(ARCH_SET_FS, 0x2d0d9a0)      = 0
set_tid_address(0x2d0d9d8)              = 4361
brk(NULL)                               = 0x4d11000
brk(0x4d12000)                          = 0x4d12000
sched_getaffinity(0, 8192, [0, 1, 2, 3]) = 40
mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7efbff6c1000
mmap(0xc000000000, 67108864, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xc000000000
mmap(0xc000000000, 67108864, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xc000000000
mmap(NULL, 33554432, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0x7efbfd6c1000
mmap(NULL, 2162688, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7efbfd4b1000
mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd4a1000
mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd491000
rt_sigprocmask(SIG_SETMASK, NULL, [], 8) = 0
sigaltstack(NULL, {ss_sp=NULL, ss_flags=SS_DISABLE, ss_size=0}) = 0
sigaltstack({ss_sp=0xc000002000, ss_flags=0, ss_size=32768}, NULL) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
gettid()                                = 4361
rt_sigaction(SIGHUP, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigprocmask(SIG_UNBLOCK, [RT_1 RT_2], NULL, 8) = 0
rt_sigaction(SIGHUP, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGINT, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGINT, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGQUIT, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGQUIT, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGILL, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGILL, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGTRAP, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGTRAP, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGABRT, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGABRT, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGBUS, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGBUS, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGFPE, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGFPE, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGUSR1, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGUSR1, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGSEGV, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGSEGV, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGUSR2, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGUSR2, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGPIPE, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGALRM, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGALRM, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGTERM, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGTERM, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGSTKFLT, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGSTKFLT, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGCHLD, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGURG, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGURG, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGXCPU, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGXCPU, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGXFSZ, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGXFSZ, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGVTALRM, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGVTALRM, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGPROF, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGPROF, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGWINCH, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGWINCH, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGIO, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGIO, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGPWR, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGPWR, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGSYS, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8)
= 0
rt_sigaction(SIGSYS, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRTMIN, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_1, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_2, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_2, {sa_handler=0x45dea0, sa_mask=~[],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x45df60}, NULL, 8) = 0
rt_sigaction(SIGRT_3, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_3, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_4, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_4, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_5, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_5, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_6, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_6, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_7, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_7, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_8, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_8, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_9, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_9, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_10, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_10, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_11, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_11, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_12, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_12, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_13, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_13, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_14, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_14, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_15, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_15, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_16, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_16, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_17, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_17, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_18, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_18, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_19, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_19, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_20, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_20, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_21, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_21, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_22, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_22, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_23, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_23, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_24, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_24, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_25, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_25, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_26, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_26, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_27, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_27, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_28, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_28, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_29, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_29, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_30, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_30, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_31, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_31, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigaction(SIGRT_32, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
8) = 0
rt_sigaction(SIGRT_32, {sa_handler=0x45dea0, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RT_1 RT_2], NULL, 8) = 0
mmap(NULL, 94208, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd47a000
mprotect(0x7efbfd47c000, 86016, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7efbfd490eb8,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x400000,
parent_tidptr=0x7efbfd490f20, tls=0x7efbfd490ee8,
child_tidptr=0x7efbfd490f20) = 4362
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) = 0
mmap(NULL, 94208, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd463000
mprotect(0x7efbfd465000, 86016, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7efbfd479eb8,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x400000,
parent_tidptr=0x7efbfd479f20, tls=0x7efbfd479ee8,
child_tidptr=0x7efbfd479f20) = 4363
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) = 0
mmap(NULL, 94208, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd435000
mprotect(0x7efbfd437000, 86016, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7efbfd44beb8,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x400000,
parent_tidptr=0x7efbfd44bf20, tls=0x7efbfd44bee8,
child_tidptr=0x7efbfd44bf20) = 4365
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) = 0
mmap(NULL, 94208, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd41e000
mprotect(0x7efbfd420000, 86016, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7efbfd434eb8,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x400000,
parent_tidptr=0x7efbfd434f20, tls=0x7efbfd434ee8,
child_tidptr=0x7efbfd434f20) = 4366
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
readlinkat(AT_FDCWD, "/proc/self/exe", "/tmp/alpine/agent", 128) = 27
fcntl(0, F_GETFL)                       = 0x8002 (flags O_RDWR|O_LARGEFILE)
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7efbfd3de000
fcntl(1, F_GETFL)                       = 0x8002 (flags O_RDWR|O_LARGEFILE)
fcntl(2, F_GETFL)                       = 0x8002 (flags O_RDWR|O_LARGEFILE)
futex(0xc000086140, FUTEX_WAKE_PRIVATE, 1) = 1
openat(AT_FDCWD, "/sys/kernel/mm/hugepages", O_RDONLY|O_CLOEXEC) = 3
epoll_create1(EPOLL_CLOEXEC)            = 4
epoll_ctl(4, EPOLL_CTL_ADD, 3, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET,
{u32=4248710912, u64=139620750601984}}) = -1 EPERM (Operation not permitted)
epoll_ctl(4, EPOLL_CTL_DEL, 3, 0xc0000d3b74) = -1 EPERM (Operation not
permitted)
getdents64(3, /* 4 entries */, 8192)    = 128
getdents64(3, /* 0 entries */, 8192)    = 0
lstat("/sys/kernel/mm/hugepages/hugepages-2048kB", {st_mode=S_IFDIR|0755,
st_size=0, ...}) = 0
lstat("/sys/kernel/mm/hugepages/hugepages-1048576kB",
{st_mode=S_IFDIR|0755, st_size=0, ...}) = 0
close(3)                                = 0
openat(AT_FDCWD, "/proc/sys/net/core/somaxconn", O_RDONLY|O_CLOEXEC) = 3
epoll_ctl(4, EPOLL_CTL_ADD, 3, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET,
{u32=4248710912, u64=139620750601984}}) = 0
fcntl(3, F_GETFL)                       = 0x8000 (flags
O_RDONLY|O_LARGEFILE)
fcntl(3, F_SETFL, O_RDONLY|O_NONBLOCK|O_LARGEFILE) = 0
read(3, "128\n", 65536)                 = 4
read(3, "", 65532)                      = 0
epoll_ctl(4, EPOLL_CTL_DEL, 3, 0xc0000d3bfc) = 0
close(3)                                = 0
getrandom("\x61\x80\xec\x0d\xa6\xac\xb2\xb2", 8, 0) = 8
ioctl(2, TCGETS, {B38400 opost isig icanon echo ...}) = 0
mmap(NULL, 1439992, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7efbfd27e000
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x2cdc340, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0xc000060f40, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060f40, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060f40, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060f40, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060f40, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7efbfd227000
getpid()                                = 4361
futex(0xc000060f40, FUTEX_WAKE_PRIVATE, 1) = 1
uname({sysname="Linux", nodename="archrabbit", ...}) = 0
getuid()                                = 1000
open("/etc/passwd", O_RDONLY|O_CLOEXEC) = 3
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
readv(3, [{iov_base="", iov_len=0},
{iov_base="root:x:0:0:root:/root:/bin/bash\n"..., iov_len=1024}], 2) = 1024
lseek(3, -105, SEEK_CUR)                = 919
close(3)                                = 0
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x2cdb4c0, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=100000}) = -1
ETIMEDOUT (Connection timed out)
epoll_pwait(4, [], 128, 0, NULL, 2)     = 0
futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) = 1
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) = 0
mmap(NULL, 94208, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd1f9000
mprotect(0x7efbfd1fb000, 86016, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7efbfd20feb8,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x400000,
parent_tidptr=0x7efbfd20ff20, tls=0x7efbfd20fee8,
child_tidptr=0x7efbfd20ff20) = 4369
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7efbfd1e9000
futex(0xc0003db9c0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc0003db9c0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0xc0003db9c0, FUTEX_WAKE_PRIVATE, 1) = 1
sched_yield()                           = 0
futex(0x2cdb3f0, FUTEX_WAKE_PRIVATE, 1) = 0
mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7efbfd169000
futex(0xc00036a4c0, FUTEX_WAKE_PRIVATE, 1) = 1
getuid()                                = 1000
getgid()                                = 1000
futex(0xc00036a4c0, FUTEX_WAKE_PRIVATE, 1) = 1
rt_sigprocmask(SIG_SETMASK, ~[HUP INT QUIT ILL TRAP ABRT BUS FPE SEGV TERM
STKFLT CHLD PROF SYS RTMIN RT_1], NULL, 8) = 0
futex(0xc00036a4c0, FUTEX_WAKE_PRIVATE, 1) = 1
rt_sigprocmask(SIG_SETMASK, ~[HUP INT QUIT ILL TRAP ABRT BUS FPE SEGV TERM
STKFLT CHLD PROF SYS RTMIN RT_1], NULL, 8) = 0
futex(0xc00036a4c0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x2cdc340, FUTEX_WAIT_PRIVATE, 0, NULL) = ? ERESTARTSYS (To be
restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
futex(0x2d0e6e0, FUTEX_WAKE_PRIVATE, 1) = 0
rt_sigreturn({mask=~[HUP INT QUIT ILL TRAP ABRT BUS FPE KILL SEGV TERM
STKFLT CHLD STOP PROF SYS RTMIN RT_1]}) = 202
futex(0x2cdc340, FUTEX_WAIT_PRIVATE, 0, NULL) = ? ERESTARTSYS (To be
restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=~[HUP INT QUIT ILL TRAP ABRT BUS FPE KILL SEGV TERM
STKFLT CHLD STOP PROF SYS RTMIN RT_1]}) = 202
futex(0x2cdc340, FUTEX_WAIT_PRIVATE, 0, NULL) = ? ERESTARTSYS (To be
restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=~[HUP INT QUIT ILL TRAP ABRT BUS FPE KILL SEGV TERM
STKFLT CHLD STOP PROF SYS RTMIN RT_1]}) = 202
futex(0x2cdc340, FUTEX_WAIT_PRIVATE, 0, NULL) = ? ERESTARTSYS (To be
restarted if SA_RESTART is set)
--- SIGTERM {si_signo=SIGTERM, si_code=SI_USER, si_pid=4392, si_uid=1000}
---
rt_sigprocmask(SIG_UNBLOCK, [TERM], NULL, 8) = 0
gettid()                                = 4361
tkill(4361, SIGTERM)                    = 0
--- SIGTERM {si_signo=SIGTERM, si_code=SI_TKILL, si_pid=4361, si_uid=1000}
---
rt_sigaction(SIGTERM, {sa_handler=SIG_DFL, sa_mask=~[RTMIN RT_1 RT_2],
sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO,
sa_restorer=0x14b7849}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [TERM], NULL, 8) = 0
gettid()                                = 4361
tkill(4361, SIGTERM)                    = 0
--- SIGTERM {si_signo=SIGTERM, si_code=SI_TKILL, si_pid=4361, si_uid=1000}
---
+++ killed by SIGTERM +++

Hope this will be helpful

Regards,

Nedim

On Tue, Sep 25, 2018 at 6:39 PM Rich Felker <dalias@libc.org> wrote:

> On Tue, Sep 25, 2018 at 05:36:05PM +0200, Szabolcs Nagy wrote:
> > * Rabbitstack <rabbitstack7@gmail.com> [2018-09-25 16:54:37 +0200]:
> > > Sorry. Let me describe the problem in more detail.
> > >
> > > The process only hangs when launched without root privileges on the
> host
> > > (Arch Linux x64 with kernel 4.17.5-1) where Alpine docker container is
> > > running. Once with root privileges, it starts up correctly (but this is
> > > obvious since it doesn't hit setrlimit call). The odd side is that on
> other
> > > hosts it hangs even when started with root. No error messages so far.
> > > Strace output:
> > >
> > > $ sudo strace -p 9285
> > >
> > > futex(0x2cddfc0, FUTEX_WAIT_PRIVATE, 0, NULL
> > >
> > > $ sudo strace -f -p 9285
> > >
> > > .....
> > > [pid  9287] getdents64(10, /* 14 entries */, 2048) = 336
> > > [pid  9287] tgkill(9285, 9285, SIGRT_2) = 0
> > > [pid  9287] futex(0x7efbff70008c, FUTEX_LOCK_PI_PRIVATE,
> > > {tv_sec=1537887068, tv_nsec=51442144}) = -1 ETIMEDOUT (Connection
> timed out)
> >
> > it looks like musl tries to sync a setuid call across
> > all threads (which is necessary since the linux syscall
> > only changes the uid for the current thread instead of
> > all threads so you can end up with different privileges
> > in the same address space which is dangerous as well as
> > non-posix conform setuid behaviour)
> >
> > it's possible that the setuid syncing is somehow wrong
> > in musl, but it's more likely that there are threads
> > that are not created by the c runtime (but from go) and
> > thus the sync cannot possibly work.
>
> It actually can kinda work with such threads. musl's stop-the-world
> __synccall pokes all kernel-level threads in the same process (thread
> group) as the caller using signals and /proc/self/task to ensure it
> didn't miss any, so it will work as long as they haven't blocked
> libc-internal signals. There may be problems with the thread pointer
> being invalid, though. The __synccall framework itself does not use
> the TCB, but other stuff in the callback might. This should probably
> be fixed.
>
> > so try to look for where set*id is called and ensure it
> > is not called or called before any threads are created
> > (or at least before any go threads are created)
> >
> > note that syscall.Set*id from go does not work either,
> > it does not sync the threads (which is dangerously
> > broken for a runtime that's always multi-threaded).
>
> Yep, that's unsafe to use. Any use is likely exploitable.
>
> Rich
>

--000000000000b3bf010577685670
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div>Hi,</div><div><br><=
/div><div>Sorry for the delay. I managed to build a minimal example that on=
ly uses gobpf to load ebpf program into the kernel. Surprisingly, it works =
fine (it doesn&#39;t hang the process). Here I attach the full strace outpu=
t:</div><div><br></div><div>execve(&quot;./muslrlimit/musltest&quot;, [&quo=
t;./muslrlimit/musltest&quot;], 0x7ffbffff96b0 /* 65 vars */) =3D 0<br>arch=
_prctl(ARCH_SET_FS, 0xe79100)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>=
set_tid_address(0xe79138)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 4454<br>brk(NULL)=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0 =3D 0x2e7c000<br>brk(0x2e7d000)=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0x2e7d000<br>sched_get=
affinity(0, 8192, [0, 1, 2, 3]) =3D 40<br>mmap(NULL, 262144, PROT_READ|PROT=
_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbff6c1000<br>mmap(0xc000=
000000, 67108864, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0xc00000=
0000<br>mmap(0xc000000000, 67108864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_=
FIXED|MAP_ANONYMOUS, -1, 0) =3D 0xc000000000<br>mmap(NULL, 33554432, PROT_R=
EAD|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd6c1000<br>mma=
p(NULL, 2162688, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
=3D 0x7efbfd4b1000<br>mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|M=
AP_ANONYMOUS, -1, 0) =3D 0x7efbfd4a1000<br>mmap(NULL, 65536, PROT_READ|PROT=
_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd491000<br>rt_sigprocm=
ask(SIG_SETMASK, NULL, [], 8) =3D 0<br>sigaltstack(NULL, {ss_sp=3DNULL, ss_=
flags=3DSS_DISABLE, ss_size=3D0}) =3D 0<br>sigaltstack({ss_sp=3D0xc00000200=
0, ss_flags=3D0, ss_size=3D32768}, NULL) =3D 0<br>rt_sigprocmask(SIG_SETMAS=
K, [], NULL, 8) =3D 0<br>gettid()=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 4=
454<br>rt_sigaction(SIGHUP, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_f=
lags=3D0}, 8) =3D 0<br>rt_sigprocmask(SIG_UNBLOCK, [RT_1 RT_2], NULL, 8) =
=3D 0<br>rt_sigaction(SIGHUP, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_=
1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restor=
er=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGINT, NULL, {sa_handler=3D=
SIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGINT, {sa_=
handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA=
_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>=
rt_sigaction(SIGQUIT, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=
=3D0}, 8) =3D 0<br>rt_sigaction(SIGQUIT, {sa_handler=3D0x4589b0, sa_mask=3D=
~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO=
, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGILL, NULL, {sa=
_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(S=
IGILL, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_=
RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8=
) =3D 0<br>rt_sigaction(SIGTRAP, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[],=
 sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGTRAP, {sa_handler=3D0x4589b0, s=
a_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|S=
A_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGABRT,=
 NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_s=
igaction(SIGABRT, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_=
flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff7=
4}, NULL, 8) =3D 0<br>rt_sigaction(SIGBUS, NULL, {sa_handler=3DSIG_DFL, sa_=
mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGBUS, {sa_handler=3D0x=
4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_=
RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction=
(SIGFPE, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0=
<br>rt_sigaction(SIGFPE, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_=
2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D=
0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGUSR1, NULL, {sa_handler=3DSIG_=
DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGUSR1, {sa_han=
dler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ON=
STACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_=
sigaction(SIGSEGV, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}=
, 8) =3D 0<br>rt_sigaction(SIGSEGV, {sa_handler=3D0x4589b0, sa_mask=3D~[RTM=
IN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_=
restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGUSR2, NULL, {sa_han=
dler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGUS=
R2, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RES=
TORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =
=3D 0<br>rt_sigaction(SIGPIPE, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], s=
a_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGPIPE, {sa_handler=3D0x4589b0, sa_=
mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_=
SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGALRM, N=
ULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sig=
action(SIGALRM, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_fl=
ags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}=
, NULL, 8) =3D 0<br>rt_sigaction(SIGTERM, NULL, {sa_handler=3DSIG_DFL, sa_m=
ask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGTERM, {sa_handler=3D0x=
4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_=
RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction=
(SIGSTKFLT, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =
=3D 0<br>rt_sigaction(SIGSTKFLT, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN =
RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_res=
torer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGCHLD, NULL, {sa_handle=
r=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGCHLD,=
 {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTOR=
ER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D =
0<br>rt_sigaction(SIGURG, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_fla=
gs=3D0}, 8) =3D 0<br>rt_sigaction(SIGURG, {sa_handler=3D0x4589b0, sa_mask=
=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGI=
NFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGXCPU, NULL,=
 {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigacti=
on(SIGXCPU, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=
=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, N=
ULL, 8) =3D 0<br>rt_sigaction(SIGXFSZ, NULL, {sa_handler=3DSIG_DFL, sa_mask=
=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGXFSZ, {sa_handler=3D0x458=
9b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RES=
TART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SI=
GVTALRM, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0=
<br>rt_sigaction(SIGVTALRM, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 =
RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=
=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGPROF, NULL, {sa_handler=3DS=
IG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGPROF, {sa_=
handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA=
_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>=
rt_sigaction(SIGWINCH, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=
=3D0}, 8) =3D 0<br>rt_sigaction(SIGWINCH, {sa_handler=3D0x4589b0, sa_mask=
=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGI=
NFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGIO, NULL, {=
sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction=
(SIGIO, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA=
_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, =
8) =3D 0<br>rt_sigaction(SIGPWR, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[],=
 sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGPWR, {sa_handler=3D0x4589b0, sa=
_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA=
_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGSYS, N=
ULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sig=
action(SIGSYS, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_fla=
gs=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74},=
 NULL, 8) =3D 0<br>rt_sigaction(SIGRTMIN, NULL, {sa_handler=3DSIG_DFL, sa_m=
ask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_1, NULL, {sa_handle=
r=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_2,=
 NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_s=
igaction(SIGRT_2, {sa_handler=3D0x4589b0, sa_mask=3D~[], sa_flags=3DSA_REST=
ORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x458a70}, NULL, 8) =
=3D 0<br>rt_sigaction(SIGRT_3, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], s=
a_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_3, {sa_handler=3D0x4589b0, sa_=
mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_=
SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_4, N=
ULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sig=
action(SIGRT_4, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_fl=
ags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}=
, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_5, NULL, {sa_handler=3DSIG_DFL, sa_m=
ask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_5, {sa_handler=3D0x=
4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_=
RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction=
(SIGRT_6, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D =
0<br>rt_sigaction(SIGRT_6, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 R=
T_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=
=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_7, NULL, {sa_handler=3DS=
IG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_7, {sa_=
handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA=
_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>=
rt_sigaction(SIGRT_8, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=
=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_8, {sa_handler=3D0x4589b0, sa_mask=3D=
~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO=
, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_9, NULL, {s=
a_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(=
SIGRT_9, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DS=
A_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL,=
 8) =3D 0<br>rt_sigaction(SIGRT_10, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D=
[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_10, {sa_handler=3D0x4589b=
0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTA=
RT|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGR=
T_11, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br=
>rt_sigaction(SIGRT_11, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2=
], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0=
x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_12, NULL, {sa_handler=3DSIG_=
DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_12, {sa_ha=
ndler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_O=
NSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt=
_sigaction(SIGRT_13, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D=
0}, 8) =3D 0<br>rt_sigaction(SIGRT_13, {sa_handler=3D0x4589b0, sa_mask=3D~[=
RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, =
sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_14, NULL, {sa=
_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(S=
IGRT_14, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DS=
A_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL,=
 8) =3D 0<br>rt_sigaction(SIGRT_15, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D=
[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_15, {sa_handler=3D0x4589b=
0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTA=
RT|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGR=
T_16, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br=
>rt_sigaction(SIGRT_16, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2=
], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0=
x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_17, NULL, {sa_handler=3DSIG_=
DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_17, {sa_ha=
ndler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_O=
NSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt=
_sigaction(SIGRT_18, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D=
0}, 8) =3D 0<br>rt_sigaction(SIGRT_18, {sa_handler=3D0x4589b0, sa_mask=3D~[=
RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, =
sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_19, NULL, {sa=
_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(S=
IGRT_19, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DS=
A_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL,=
 8) =3D 0<br>rt_sigaction(SIGRT_20, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D=
[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_20, {sa_handler=3D0x4589b=
0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTA=
RT|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGR=
T_21, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br=
>rt_sigaction(SIGRT_21, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2=
], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0=
x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_22, NULL, {sa_handler=3DSIG_=
DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_22, {sa_ha=
ndler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_O=
NSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt=
_sigaction(SIGRT_23, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D=
0}, 8) =3D 0<br>rt_sigaction(SIGRT_23, {sa_handler=3D0x4589b0, sa_mask=3D~[=
RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, =
sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_24, NULL, {sa=
_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(S=
IGRT_24, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DS=
A_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL,=
 8) =3D 0<br>rt_sigaction(SIGRT_25, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D=
[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_25, {sa_handler=3D0x4589b=
0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTA=
RT|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGR=
T_26, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br=
>rt_sigaction(SIGRT_26, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2=
], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0=
x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_27, NULL, {sa_handler=3DSIG_=
DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_27, {sa_ha=
ndler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_O=
NSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt=
_sigaction(SIGRT_28, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D=
0}, 8) =3D 0<br>rt_sigaction(SIGRT_28, {sa_handler=3D0x4589b0, sa_mask=3D~[=
RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, =
sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_29, NULL, {sa=
_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(S=
IGRT_29, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DS=
A_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL,=
 8) =3D 0<br>rt_sigaction(SIGRT_30, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D=
[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_30, {sa_handler=3D0x4589b=
0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTA=
RT|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGR=
T_31, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br=
>rt_sigaction(SIGRT_31, {sa_handler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2=
], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0=
x7dff74}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_32, NULL, {sa_handler=3DSIG_=
DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_32, {sa_ha=
ndler=3D0x4589b0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_O=
NSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>rt=
_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) =3D 0<br>rt_sigprocmas=
k(SIG_UNBLOCK, [RT_1 RT_2], NULL, 8) =3D 0<br>mmap(NULL, 94208, PROT_NONE, =
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd47a000<br>mprotect(0x7efbfd47=
c000, 86016, PROT_READ|PROT_WRITE) =3D 0<br>clone(child_stack=3D0x7efbfd490=
eb8, flags=3DCLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE=
_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x400000, pa=
rent_tidptr=3D0x7efbfd490f20, tls=3D0x7efbfd490ee8, child_tidptr=3D0x7efbfd=
490f20) =3D 4455<br>rt_sigprocmask(SIG_SETMASK, [], NULL, 8) =3D 0<br>rt_si=
gprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) =3D 0<br>mmap(NULL, 94208=
, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd463000<br>mprote=
ct(0x7efbfd465000, 86016, PROT_READ|PROT_WRITE) =3D 0<br>clone(child_stack=
=3D0x7efbfd479eb8, flags=3DCLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLON=
E_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTI=
D|0x400000, parent_tidptr=3D0x7efbfd479f20, tls=3D0x7efbfd479ee8, child_tid=
ptr=3D0x7efbfd479f20) =3D 4456<br>rt_sigprocmask(SIG_SETMASK, [], NULL, 8) =
=3D 0<br>rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) =3D 0<br>mm=
ap(NULL, 94208, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd44=
c000<br>mprotect(0x7efbfd44e000, 86016, PROT_READ|PROT_WRITE) =3D 0<br>clon=
e(child_stack=3D0x7efbfd462eb8, flags=3DCLONE_VM|CLONE_FS|CLONE_FILES|CLONE=
_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_=
CHILD_CLEARTID|0x400000, parent_tidptr=3D0x7efbfd462f20, tls=3D0x7efbfd462e=
e8, child_tidptr=3D0x7efbfd462f20) =3D 4457<br>rt_sigprocmask(SIG_SETMASK, =
[], NULL, 8) =3D 0<br>futex(0xc000046bc0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>r=
t_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) =3D 0<br>mmap(NULL, 9=
4208, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd435000<br>mp=
rotect(0x7efbfd437000, 86016, PROT_READ|PROT_WRITE) =3D 0<br>clone(child_st=
ack=3D0x7efbfd44beb8, flags=3DCLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|C=
LONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEA=
RTID|0x400000, parent_tidptr=3D0x7efbfd44bf20, tls=3D0x7efbfd44bee8, child_=
tidptr=3D0x7efbfd44bf20) =3D 4458<br>rt_sigprocmask(SIG_SETMASK, [], NULL, =
8) =3D 0<br>readlinkat(AT_FDCWD, &quot;/proc/self/exe&quot;, &quot;/tmp/alp=
ine/muslrlimit/musltest&quot;, 128) =3D 31<br>fcntl(0, F_GETFL)=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0x8002 (flags O_RDWR|O_LA=
RGEFILE)<br>mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYM=
OUS, -1, 0) =3D 0x7efbfd3f5000<br>fcntl(1, F_GETFL)=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0x8002 (flags O_RDWR|O_LARGEFILE)<br>=
fcntl(2, F_GETFL)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
 =3D 0x8002 (flags O_RDWR|O_LARGEFILE)<br>openat(AT_FDCWD, &quot;/proc/sys/=
net/core/somaxconn&quot;, O_RDONLY|O_CLOEXEC) =3D 3<br>epoll_create1(EPOLL_=
CLOEXEC)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
=3D 4<br>epoll_ctl(4, EPOLL_CTL_ADD, 3, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLE=
T, {u32=3D4248805120, u64=3D139620750696192}}) =3D 0<br>fcntl(3, F_GETFL)=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0x8000 (flags=
 O_RDONLY|O_LARGEFILE)<br>fcntl(3, F_SETFL, O_RDONLY|O_NONBLOCK|O_LARGEFILE=
) =3D 0<br>read(3, &quot;128\n&quot;, 65536)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 4<br=
>read(3, &quot;&quot;, 65532)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0 =3D 0<br>epoll_ctl(4, EPOLL_CTL_DEL, 3, 0xc00009bc74) =3D 0<br>close=
(3)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>openat(AT_FDCWD, &quot;/pr=
oc/version_signature&quot;, O_RDONLY|O_CLOEXEC) =3D -1 ENOENT (No such file=
 or directory)<br>openat(AT_FDCWD, &quot;/proc/version&quot;, O_RDONLY|O_CL=
OEXEC) =3D 3<br>epoll_ctl(4, EPOLL_CTL_ADD, 3, {EPOLLIN|EPOLLOUT|EPOLLRDHUP=
|EPOLLET, {u32=3D4248805120, u64=3D139620750696192}}) =3D 0<br>fcntl(3, F_G=
ETFL)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0x8000 =
(flags O_RDONLY|O_LARGEFILE)<br>fcntl(3, F_SETFL, O_RDONLY|O_NONBLOCK|O_LAR=
GEFILE) =3D 0<br>fstat(3, {st_mode=3DS_IFREG|0444, st_size=3D0, ...}) =3D 0=
<br>read(3, &quot;Linux version 4.17.5-1-ARCH (bui&quot;..., 512) =3D 131<b=
r>read(3, &quot;&quot;, 1405)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 =3D 0<br>epoll_ctl(4, EPOLL_CTL_DEL, 3, 0xc0001238e4) =3D 0<br=
>close(3)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>uname({sysname=3D&qu=
ot;Linux&quot;, nodename=3D&quot;archrabbit&quot;, ...}) =3D 0<br>mmap(NULL=
, 1439992, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7e=
fbfd295000<br>openat(AT_FDCWD, &quot;/proc/version_signature&quot;, O_RDONL=
Y|O_CLOEXEC) =3D -1 ENOENT (No such file or directory)<br>openat(AT_FDCWD, =
&quot;/proc/version&quot;, O_RDONLY|O_CLOEXEC) =3D 3<br>epoll_ctl(4, EPOLL_=
CTL_ADD, 3, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, {u32=3D4248805120, u64=3D=
139620750696192}}) =3D 0<br>fcntl(3, F_GETFL)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0x8000 (flags O_RDONLY|O_LARGEFILE)<br>fcnt=
l(3, F_SETFL, O_RDONLY|O_NONBLOCK|O_LARGEFILE) =3D 0<br>fstat(3, {st_mode=
=3DS_IFREG|0444, st_size=3D0, ...}) =3D 0<br>read(3, &quot;Linux version 4.=
17.5-1-ARCH (bui&quot;..., 512) =3D 131<br>read(3, &quot;&quot;, 1405)=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>epoll_ctl(4=
, EPOLL_CTL_DEL, 3, 0xc000123544) =3D 0<br>close(3)=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 =3D 0<br>uname({sysname=3D&quot;Linux&quot;, nodename=3D&quot;=
archrabbit&quot;, ...}) =3D 0<br>bpf(BPF_MAP_CREATE, {map_type=3DBPF_MAP_TY=
PE_PERF_EVENT_ARRAY, key_size=3D4, value_size=3D4, max_entries=3D1024, map_=
flags=3D0, inner_map_fd=3D0, map_name=3D&quot;&quot;, map_ifindex=3D0}, 48)=
 =3D 3<br>bpf(BPF_PROG_LOAD, {prog_type=3DBPF_PROG_TYPE_KPROBE, insn_cnt=3D=
45, insns=3D0xc0001de180, license=3D&quot;GPL&quot;, log_level=3D1, log_siz=
e=3D524288, log_buf=3D&quot;&quot;, kern_version=3DKERNEL_VERSION(4, 17, 5)=
, prog_flags=3D0}, 48) =3D -1 EPERM (Operation not permitted)<br>prlimit64(=
0, RLIMIT_MEMLOCK, NULL, {rlim_cur=3DRLIM64_INFINITY, rlim_max=3DRLIM64_INF=
INITY}) =3D 0<br>rt_sigprocmask(SIG_BLOCK, ~[RTMIN RT_1 RT_2], [], 8) =3D 0=
<br>rt_sigprocmask(SIG_BLOCK, ~[], NULL, 8) =3D 0<br>rt_sigaction(SIGRT_2, =
{sa_handler=3D0x7e3132, sa_mask=3D~[], sa_flags=3DSA_RESTORER|SA_RESTART, s=
a_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>getpid()=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 =3D 4454<br>gettid()=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 4=
454<br>open(&quot;/proc/self/task&quot;, O_RDONLY|O_CLOEXEC|O_DIRECTORY) =
=3D 5<br>fcntl(5, F_SETFD, FD_CLOEXEC)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>kill(4454, SIGRT_2)=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>kill(4454, SIGRT_2)=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>kill(4454, SIGRT_2)=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>kill(4454, SIGRT_2)=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>getdents64(5, /* 7 entries */, 2048)=C2=
=A0=C2=A0=C2=A0 =3D 168<br>getdents64(5, /* 0 entries */, 2048)=C2=A0=C2=A0=
=C2=A0 =3D 0<br>close(5)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>futex=
(0x7efbfd44b75c, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0x7efbfd46265c, FUTE=
X_WAKE_PRIVATE, 1) =3D 1<br>futex(0x7efbfd47965c, FUTEX_WAKE_PRIVATE, 1) =
=3D 1<br>futex(0x7efbfd49075c, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>rt_sigaction=
(SIGRT_2, {sa_handler=3DSIG_IGN, sa_mask=3D~[], sa_flags=3DSA_RESTORER|SA_R=
ESTART, sa_restorer=3D0x7dff74}, NULL, 8) =3D 0<br>prlimit64(0, RLIMIT_MEML=
OCK, {rlim_cur=3DRLIM64_INFINITY, rlim_max=3DRLIM64_INFINITY}, NULL) =3D 0<=
br>futex(0x7efbfd44b75c, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0x7efbfd4626=
5c, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0x7efbfd47965c, FUTEX_WAKE_PRIVAT=
E, 1) =3D 1<br>futex(0x7efbfd49075c, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(=
0xe79050, FUTEX_WAKE_PRIVATE, 2147483647) =3D 0<br>rt_sigprocmask(SIG_SETMA=
SK, [], NULL, 8) =3D 0<br>bpf(BPF_PROG_LOAD, {prog_type=3DBPF_PROG_TYPE_KPR=
OBE, insn_cnt=3D45, insns=3D0xc0001de180, license=3D&quot;GPL&quot;, log_le=
vel=3D1, log_size=3D524288, log_buf=3D&quot;&quot;, kern_version=3DKERNEL_V=
ERSION(4, 17, 5), prog_flags=3D0}, 48) =3D -1 EPERM (Operation not permitte=
d)<br>ioctl(2, TCGETS, {B38400 opost isig icanon echo ...}) =3D 0<br>write(=
2, &quot;\33[31mERRO\33[0m[0000] unable to in&quot;..., 143) =3D 143<br>exi=
t_group(0)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 =3D ?<br>+++ exited with 0 +++</div><div><br></div><div>=
Conversely, the offending binary does not even issue the bpf syscall, which=
 is quite strange. Once I remove ebpf code from the program, it does start =
fine, so I&#39;m prety sure ebpf prog loading is the culpirt here. Here&#39=
;s strace output:</div><div><br></div><div>execve(&quot;./agent&quot;, [&qu=
ot;./agent&quot;, &quot;--token=3D1&quot;], 0x7ffbffff96a8 /* 65 vars */) =
=3D 0<br>arch_prctl(ARCH_SET_FS, 0x2d0d9a0)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
=3D 0<br>set_tid_address(0x2d0d9d8)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 4361<br>brk(NULL)=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 =3D 0x4d11000<br>brk(0x4d12000)=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0x4d12000<br>sched_=
getaffinity(0, 8192, [0, 1, 2, 3]) =3D 40<br>mmap(NULL, 262144, PROT_READ|P=
ROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbff6c1000<br>mmap(0xc=
000000000, 67108864, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0xc00=
0000000<br>mmap(0xc000000000, 67108864, PROT_READ|PROT_WRITE, MAP_PRIVATE|M=
AP_FIXED|MAP_ANONYMOUS, -1, 0) =3D 0xc000000000<br>mmap(NULL, 33554432, PRO=
T_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd6c1000<br>=
mmap(NULL, 2162688, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)=
 =3D 0x7efbfd4b1000<br>mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|=
MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd4a1000<br>mmap(NULL, 65536, PROT_READ|PRO=
T_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd491000<br>rt_sigproc=
mask(SIG_SETMASK, NULL, [], 8) =3D 0<br>sigaltstack(NULL, {ss_sp=3DNULL, ss=
_flags=3DSS_DISABLE, ss_size=3D0}) =3D 0<br>sigaltstack({ss_sp=3D0xc0000020=
00, ss_flags=3D0, ss_size=3D32768}, NULL) =3D 0<br>rt_sigprocmask(SIG_SETMA=
SK, [], NULL, 8) =3D 0<br>gettid()=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
=3D 4361<br>rt_sigaction(SIGHUP, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[],=
 sa_flags=3D0}, 8) =3D 0<br>rt_sigprocmask(SIG_UNBLOCK, [RT_1 RT_2], NULL, =
8) =3D 0<br>rt_sigaction(SIGHUP, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN =
RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_res=
torer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGINT, NULL, {sa_handle=
r=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGINT, =
{sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORE=
R|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D =
0<br>rt_sigaction(SIGQUIT, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_fl=
ags=3D0}, 8) =3D 0<br>rt_sigaction(SIGQUIT, {sa_handler=3D0x45dea0, sa_mask=
=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGI=
NFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGILL, NULL,=
 {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigacti=
on(SIGILL, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=
=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, =
NULL, 8) =3D 0<br>rt_sigaction(SIGTRAP, NULL, {sa_handler=3DSIG_DFL, sa_mas=
k=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGTRAP, {sa_handler=3D0x45=
dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RE=
START|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(=
SIGABRT, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0=
<br>rt_sigaction(SIGABRT, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT=
_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=
=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGBUS, NULL, {sa_handler=3DS=
IG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGBUS, {sa_h=
andler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_=
ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>=
rt_sigaction(SIGFPE, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D=
0}, 8) =3D 0<br>rt_sigaction(SIGFPE, {sa_handler=3D0x45dea0, sa_mask=3D~[RT=
MIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa=
_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGUSR1, NULL, {sa_h=
andler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIG=
USR1, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_R=
ESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8=
) =3D 0<br>rt_sigaction(SIGSEGV, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[],=
 sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGSEGV, {sa_handler=3D0x45dea0, s=
a_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|S=
A_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGUSR2=
, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_=
sigaction(SIGUSR2, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa=
_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7=
849}, NULL, 8) =3D 0<br>rt_sigaction(SIGPIPE, NULL, {sa_handler=3DSIG_DFL, =
sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGPIPE, {sa_handler=
=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTAC=
K|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sig=
action(SIGALRM, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8=
) =3D 0<br>rt_sigaction(SIGALRM, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN =
RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_res=
torer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGTERM, NULL, {sa_handl=
er=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGTERM=
, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTO=
RER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =
=3D 0<br>rt_sigaction(SIGSTKFLT, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[],=
 sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGSTKFLT, {sa_handler=3D0x45dea0,=
 sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART=
|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGCH=
LD, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>r=
t_sigaction(SIGCHLD, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], =
sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14=
b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGURG, NULL, {sa_handler=3DSIG_DFL,=
 sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGURG, {sa_handler=
=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTAC=
K|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sig=
action(SIGXCPU, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8=
) =3D 0<br>rt_sigaction(SIGXCPU, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN =
RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_res=
torer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGXFSZ, NULL, {sa_handl=
er=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGXFSZ=
, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTO=
RER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =
=3D 0<br>rt_sigaction(SIGVTALRM, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[],=
 sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGVTALRM, {sa_handler=3D0x45dea0,=
 sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART=
|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGPR=
OF, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>r=
t_sigaction(SIGPROF, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], =
sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14=
b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGWINCH, NULL, {sa_handler=3DSIG_DF=
L, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGWINCH, {sa_hand=
ler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONS=
TACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_=
sigaction(SIGIO, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, =
8) =3D 0<br>rt_sigaction(SIGIO, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN R=
T_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_rest=
orer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGPWR, NULL, {sa_handler=
=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGPWR, {=
sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER=
|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0=
<br>rt_sigaction(SIGSYS, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flag=
s=3D0}, 8) =3D 0<br>rt_sigaction(SIGSYS, {sa_handler=3D0x45dea0, sa_mask=3D=
~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO=
, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRTMIN, NULL, =
{sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigactio=
n(SIGRT_1, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D=
 0<br>rt_sigaction(SIGRT_2, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_f=
lags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_2, {sa_handler=3D0x45dea0, sa_mas=
k=3D~[], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restor=
er=3D0x45df60}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_3, NULL, {sa_handler=
=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_3, =
{sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORE=
R|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D =
0<br>rt_sigaction(SIGRT_4, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_fl=
ags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_4, {sa_handler=3D0x45dea0, sa_mask=
=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGI=
NFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_5, NULL=
, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigact=
ion(SIGRT_5, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=
=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, =
NULL, 8) =3D 0<br>rt_sigaction(SIGRT_6, NULL, {sa_handler=3DSIG_DFL, sa_mas=
k=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_6, {sa_handler=3D0x45=
dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RE=
START|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(=
SIGRT_7, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0=
<br>rt_sigaction(SIGRT_7, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT=
_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=
=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_8, NULL, {sa_handler=3D=
SIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_8, {sa=
_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|S=
A_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<b=
r>rt_sigaction(SIGRT_9, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=
=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_9, {sa_handler=3D0x45dea0, sa_mask=3D=
~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO=
, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_10, NULL, =
{sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigactio=
n(SIGRT_10, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=
=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, =
NULL, 8) =3D 0<br>rt_sigaction(SIGRT_11, NULL, {sa_handler=3DSIG_DFL, sa_ma=
sk=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_11, {sa_handler=3D0x=
45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_=
RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigactio=
n(SIGRT_12, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =
=3D 0<br>rt_sigaction(SIGRT_12, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN R=
T_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_rest=
orer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_13, NULL, {sa_handl=
er=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_1=
3, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_REST=
ORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =
=3D 0<br>rt_sigaction(SIGRT_14, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], =
sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_14, {sa_handler=3D0x45dea0, s=
a_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|S=
A_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_1=
5, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt=
_sigaction(SIGRT_15, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], =
sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14=
b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_16, NULL, {sa_handler=3DSIG_DF=
L, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_16, {sa_hand=
ler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONS=
TACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_=
sigaction(SIGRT_17, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0=
}, 8) =3D 0<br>rt_sigaction(SIGRT_17, {sa_handler=3D0x45dea0, sa_mask=3D~[R=
TMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, s=
a_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_18, NULL, {sa=
_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(S=
IGRT_18, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DS=
A_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL=
, 8) =3D 0<br>rt_sigaction(SIGRT_19, NULL, {sa_handler=3DSIG_DFL, sa_mask=
=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_19, {sa_handler=3D0x45=
dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RE=
START|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(=
SIGRT_20, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D =
0<br>rt_sigaction(SIGRT_20, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 =
RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=
=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_21, NULL, {sa_handler=
=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_21,=
 {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTOR=
ER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D=
 0<br>rt_sigaction(SIGRT_22, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_=
flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_22, {sa_handler=3D0x45dea0, sa_m=
ask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_S=
IGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_23, =
NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_si=
gaction(SIGRT_23, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_=
flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b78=
49}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_24, NULL, {sa_handler=3DSIG_DFL, =
sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_24, {sa_handler=
=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTAC=
K|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sig=
action(SIGRT_25, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, =
8) =3D 0<br>rt_sigaction(SIGRT_25, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMI=
N RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_r=
estorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_26, NULL, {sa_ha=
ndler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGR=
T_26, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_R=
ESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8=
) =3D 0<br>rt_sigaction(SIGRT_27, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[]=
, sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_27, {sa_handler=3D0x45dea0,=
 sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART=
|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT=
_28, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>=
rt_sigaction(SIGRT_28, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2]=
, sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x=
14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_29, NULL, {sa_handler=3DSIG_=
DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_29, {sa_ha=
ndler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_O=
NSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>r=
t_sigaction(SIGRT_30, NULL, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=
=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_30, {sa_handler=3D0x45dea0, sa_mask=
=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGI=
NFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_31, NUL=
L, {sa_handler=3DSIG_DFL, sa_mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigac=
tion(SIGRT_31, {sa_handler=3D0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_fla=
gs=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}=
, NULL, 8) =3D 0<br>rt_sigaction(SIGRT_32, NULL, {sa_handler=3DSIG_DFL, sa_=
mask=3D[], sa_flags=3D0}, 8) =3D 0<br>rt_sigaction(SIGRT_32, {sa_handler=3D=
0x45dea0, sa_mask=3D~[RTMIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|S=
A_RESTART|SA_SIGINFO, sa_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigpro=
cmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) =3D 0<br>rt_sigprocmask(SIG_U=
NBLOCK, [RT_1 RT_2], NULL, 8) =3D 0<br>mmap(NULL, 94208, PROT_NONE, MAP_PRI=
VATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd47a000<br>mprotect(0x7efbfd47c000, 8=
6016, PROT_READ|PROT_WRITE) =3D 0<br>clone(child_stack=3D0x7efbfd490eb8, fl=
ags=3DCLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSE=
M|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x400000, parent_ti=
dptr=3D0x7efbfd490f20, tls=3D0x7efbfd490ee8, child_tidptr=3D0x7efbfd490f20)=
 =3D 4362<br>rt_sigprocmask(SIG_SETMASK, [], NULL, 8) =3D 0<br>rt_sigprocma=
sk(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) =3D 0<br>mmap(NULL, 94208, PROT_=
NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd463000<br>mprotect(0x7e=
fbfd465000, 86016, PROT_READ|PROT_WRITE) =3D 0<br>clone(child_stack=3D0x7ef=
bfd479eb8, flags=3DCLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD=
|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x4000=
00, parent_tidptr=3D0x7efbfd479f20, tls=3D0x7efbfd479ee8, child_tidptr=3D0x=
7efbfd479f20) =3D 4363<br>rt_sigprocmask(SIG_SETMASK, [], NULL, 8) =3D 0<br=
>futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>rt_sigprocmask(SIG_SET=
MASK, ~[RTMIN RT_1 RT_2], [], 8) =3D 0<br>mmap(NULL, 94208, PROT_NONE, MAP_=
PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd435000<br>mprotect(0x7efbfd437000=
, 86016, PROT_READ|PROT_WRITE) =3D 0<br>clone(child_stack=3D0x7efbfd44beb8,=
 flags=3DCLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYS=
VSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x400000, parent=
_tidptr=3D0x7efbfd44bf20, tls=3D0x7efbfd44bee8, child_tidptr=3D0x7efbfd44bf=
20) =3D 4365<br>rt_sigprocmask(SIG_SETMASK, [], NULL, 8) =3D 0<br>rt_sigpro=
cmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) =3D 0<br>mmap(NULL, 94208, PR=
OT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd41e000<br>mprotect(0=
x7efbfd420000, 86016, PROT_READ|PROT_WRITE) =3D 0<br>clone(child_stack=3D0x=
7efbfd434eb8, flags=3DCLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THR=
EAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|0x4=
00000, parent_tidptr=3D0x7efbfd434f20, tls=3D0x7efbfd434ee8, child_tidptr=
=3D0x7efbfd434f20) =3D 4366<br>rt_sigprocmask(SIG_SETMASK, [], NULL, 8) =3D=
 0<br>readlinkat(AT_FDCWD, &quot;/proc/self/exe&quot;, &quot;/tmp/alpine/ag=
ent&quot;, 128) =3D 27<br>fcntl(0, F_GETFL)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0x8002 (flags O_RDWR|O_LARGEFILE)<br>futex(=
0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>mmap(NULL, 262144, PROT_READ|=
PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd3de000<br>fcntl(1=
, F_GETFL)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0=
x8002 (flags O_RDWR|O_LARGEFILE)<br>fcntl(2, F_GETFL)=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0x8002 (flags O_RDWR|O_LARGEFILE)<=
br>futex(0xc000086140, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>openat(AT_FDCWD, &qu=
ot;/sys/kernel/mm/hugepages&quot;, O_RDONLY|O_CLOEXEC) =3D 3<br>epoll_creat=
e1(EPOLL_CLOEXEC)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 =3D 4<br>epoll_ctl(4, EPOLL_CTL_ADD, 3, {EPOLLIN|EPOLLOUT|EPOLLRD=
HUP|EPOLLET, {u32=3D4248710912, u64=3D139620750601984}}) =3D -1 EPERM (Oper=
ation not permitted)<br>epoll_ctl(4, EPOLL_CTL_DEL, 3, 0xc0000d3b74) =3D -1=
 EPERM (Operation not permitted)<br>getdents64(3, /* 4 entries */, 8192)=C2=
=A0=C2=A0=C2=A0 =3D 128<br>getdents64(3, /* 0 entries */, 8192)=C2=A0=C2=A0=
=C2=A0 =3D 0<br>lstat(&quot;/sys/kernel/mm/hugepages/hugepages-2048kB&quot;=
, {st_mode=3DS_IFDIR|0755, st_size=3D0, ...}) =3D 0<br>lstat(&quot;/sys/ker=
nel/mm/hugepages/hugepages-1048576kB&quot;, {st_mode=3DS_IFDIR|0755, st_siz=
e=3D0, ...}) =3D 0<br>close(3)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br=
>openat(AT_FDCWD, &quot;/proc/sys/net/core/somaxconn&quot;, O_RDONLY|O_CLOE=
XEC) =3D 3<br>epoll_ctl(4, EPOLL_CTL_ADD, 3, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|E=
POLLET, {u32=3D4248710912, u64=3D139620750601984}}) =3D 0<br>fcntl(3, F_GET=
FL)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0x8000 (fl=
ags O_RDONLY|O_LARGEFILE)<br>fcntl(3, F_SETFL, O_RDONLY|O_NONBLOCK|O_LARGEF=
ILE) =3D 0<br>read(3, &quot;128\n&quot;, 65536)=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 4=
<br>read(3, &quot;&quot;, 65532)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 =3D 0<br>epoll_ctl(4, EPOLL_CTL_DEL, 3, 0xc0000d3bfc) =3D 0<br>cl=
ose(3)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>getrandom(&quot;\x61\x8=
0\xec\x0d\xa6\xac\xb2\xb2&quot;, 8, 0) =3D 8<br>ioctl(2, TCGETS, {B38400 op=
ost isig icanon echo ...}) =3D 0<br>mmap(NULL, 1439992, PROT_READ|PROT_WRIT=
E, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd27e000<br>futex(0xc000060b=
c0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060bc0, FUTEX_WAKE_PRIVATE,=
 1) =3D 1<br>futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc0=
00060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060bc0, FUTEX_WAKE_PR=
IVATE, 1) =3D 1<br>futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>fute=
x(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060840, FUTEX_W=
AKE_PRIVATE, 1) =3D 1<br>futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<b=
r>futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060bc0, F=
UTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) =
=3D 1<br>futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc00006=
0bc0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0x2cdc340, FUTEX_WAIT_PRIVATE, =
0, NULL) =3D 0<br>futex(0xc000060f40, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex=
(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060f40, FUTEX_WA=
KE_PRIVATE, 1) =3D 1<br>futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br=
>futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060f40, FU=
TEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060f40, FUTEX_WAKE_PRIVATE, 1) =
=3D 1<br>futex(0xc000060f40, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc00006=
0840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060840, FUTEX_WAKE_PRIVAT=
E, 1) =3D 1<br>futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0x=
c000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060840, FUTEX_WAKE_=
PRIVATE, 1) =3D 1<br>futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>fu=
tex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060840, FUTEX=
_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1=
<br>futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>mmap(NULL, 262144, =
PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd227000<=
br>getpid()=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 4361<br>futex(0xc00006=
0f40, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>uname({sysname=3D&quot;Linux&quot;, n=
odename=3D&quot;archrabbit&quot;, ...}) =3D 0<br>getuid()=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 =3D 1000<br>open(&quot;/etc/passwd&quot;, O_RDONLY|O_CLO=
EXEC) =3D 3<br>fcntl(3, F_SETFD, FD_CLOEXEC)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>fcntl(3, F_SETFD, FD_CLOEXEC)=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>readv(3, [{=
iov_base=3D&quot;&quot;, iov_len=3D0}, {iov_base=3D&quot;root:x:0:0:root:/r=
oot:/bin/bash\n&quot;..., iov_len=3D1024}], 2) =3D 1024<br>lseek(3, -105, S=
EEK_CUR)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 =3D 919<br>close(3)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0 =3D 0<br>futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0=
xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0xc000060840, FUTEX_WAKE=
_PRIVATE, 1) =3D 1<br>futex(0xc000060840, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>f=
utex(0x2cdb4c0, FUTEX_WAIT_PRIVATE, 0, {tv_sec=3D0, tv_nsec=3D100000}) =3D =
-1 ETIMEDOUT (Connection timed out)<br>epoll_pwait(4, [], 128, 0, NULL, 2)=
=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>futex(0xc000060bc0, FUTEX_WAKE_PRIVATE, 1=
) =3D 1<br>rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1 RT_2], [], 8) =3D 0<br>=
mmap(NULL, 94208, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd=
1f9000<br>mprotect(0x7efbfd1fb000, 86016, PROT_READ|PROT_WRITE) =3D 0<br>cl=
one(child_stack=3D0x7efbfd20feb8, flags=3DCLONE_VM|CLONE_FS|CLONE_FILES|CLO=
NE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLON=
E_CHILD_CLEARTID|0x400000, parent_tidptr=3D0x7efbfd20ff20, tls=3D0x7efbfd20=
fee8, child_tidptr=3D0x7efbfd20ff20) =3D 4369<br>rt_sigprocmask(SIG_SETMASK=
, [], NULL, 8) =3D 0<br>mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE=
|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd1e9000<br>futex(0xc0003db9c0, FUTEX_WAKE=
_PRIVATE, 1) =3D 1<br>futex(0xc0003db9c0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>f=
utex(0xc0003db9c0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>sched_yield()=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
=3D 0<br>futex(0x2cdb3f0, FUTEX_WAKE_PRIVATE, 1) =3D 0<br>mmap(NULL, 262144=
, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =3D 0x7efbfd16900=
0<br>futex(0xc00036a4c0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>getuid()=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 1000<br>getgid()=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 =3D 1000<br>futex(0xc00036a4c0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>r=
t_sigprocmask(SIG_SETMASK, ~[HUP INT QUIT ILL TRAP ABRT BUS FPE SEGV TERM S=
TKFLT CHLD PROF SYS RTMIN RT_1], NULL, 8) =3D 0<br>futex(0xc00036a4c0, FUTE=
X_WAKE_PRIVATE, 1) =3D 1<br>rt_sigprocmask(SIG_SETMASK, ~[HUP INT QUIT ILL =
TRAP ABRT BUS FPE SEGV TERM STKFLT CHLD PROF SYS RTMIN RT_1], NULL, 8) =3D =
0<br>futex(0xc00036a4c0, FUTEX_WAKE_PRIVATE, 1) =3D 1<br>futex(0x2cdc340, F=
UTEX_WAIT_PRIVATE, 0, NULL) =3D ? ERESTARTSYS (To be restarted if SA_RESTAR=
T is set)<br>--- SIGINT {si_signo=3DSIGINT, si_code=3DSI_KERNEL} ---<br>fut=
ex(0x2d0e6e0, FUTEX_WAKE_PRIVATE, 1) =3D 0<br>rt_sigreturn({mask=3D~[HUP IN=
T QUIT ILL TRAP ABRT BUS FPE KILL SEGV TERM STKFLT CHLD STOP PROF SYS RTMIN=
 RT_1]}) =3D 202<br>futex(0x2cdc340, FUTEX_WAIT_PRIVATE, 0, NULL) =3D ? ERE=
STARTSYS (To be restarted if SA_RESTART is set)<br>--- SIGINT {si_signo=3DS=
IGINT, si_code=3DSI_KERNEL} ---<br>rt_sigreturn({mask=3D~[HUP INT QUIT ILL =
TRAP ABRT BUS FPE KILL SEGV TERM STKFLT CHLD STOP PROF SYS RTMIN RT_1]}) =
=3D 202<br>futex(0x2cdc340, FUTEX_WAIT_PRIVATE, 0, NULL) =3D ? ERESTARTSYS =
(To be restarted if SA_RESTART is set)<br>--- SIGINT {si_signo=3DSIGINT, si=
_code=3DSI_KERNEL} ---<br>rt_sigreturn({mask=3D~[HUP INT QUIT ILL TRAP ABRT=
 BUS FPE KILL SEGV TERM STKFLT CHLD STOP PROF SYS RTMIN RT_1]}) =3D 202<br>=
futex(0x2cdc340, FUTEX_WAIT_PRIVATE, 0, NULL) =3D ? ERESTARTSYS (To be rest=
arted if SA_RESTART is set)<br>--- SIGTERM {si_signo=3DSIGTERM, si_code=3DS=
I_USER, si_pid=3D4392, si_uid=3D1000} ---<br>rt_sigprocmask(SIG_UNBLOCK, [T=
ERM], NULL, 8) =3D 0<br>gettid()=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 4=
361<br>tkill(4361, SIGTERM)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br=
>--- SIGTERM {si_signo=3DSIGTERM, si_code=3DSI_TKILL, si_pid=3D4361, si_uid=
=3D1000} ---<br>rt_sigaction(SIGTERM, {sa_handler=3DSIG_DFL, sa_mask=3D~[RT=
MIN RT_1 RT_2], sa_flags=3DSA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa=
_restorer=3D0x14b7849}, NULL, 8) =3D 0<br>rt_sigprocmask(SIG_UNBLOCK, [TERM=
], NULL, 8) =3D 0<br>gettid()=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 4361=
<br>tkill(4361, SIGTERM)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D 0<br>--=
- SIGTERM {si_signo=3DSIGTERM, si_code=3DSI_TKILL, si_pid=3D4361, si_uid=3D=
1000} ---<br>+++ killed by SIGTERM +++<br></div><div><br></div><div>Hope th=
is will be helpful</div><div><br></div><div>Regards,</div><div><br></div><d=
iv>Nedim<br></div></div></div></div><br><div class=3D"gmail_quote"><div dir=
=3D"ltr">On Tue, Sep 25, 2018 at 6:39 PM Rich Felker &lt;<a href=3D"mailto:=
dalias@libc.org">dalias@libc.org</a>&gt; wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">On Tue, Sep 25, 2018 at 05:36:05PM +0200, Szabolcs Nagy wrote=
:<br>
&gt; * Rabbitstack &lt;<a href=3D"mailto:rabbitstack7@gmail.com" target=3D"=
_blank">rabbitstack7@gmail.com</a>&gt; [2018-09-25 16:54:37 +0200]:<br>
&gt; &gt; Sorry. Let me describe the problem in more detail.<br>
&gt; &gt; <br>
&gt; &gt; The process only hangs when launched without root privileges on t=
he host<br>
&gt; &gt; (Arch Linux x64 with kernel 4.17.5-1) where Alpine docker contain=
er is<br>
&gt; &gt; running. Once with root privileges, it starts up correctly (but t=
his is<br>
&gt; &gt; obvious since it doesn&#39;t hit setrlimit call). The odd side is=
 that on other<br>
&gt; &gt; hosts it hangs even when started with root. No error messages so =
far.<br>
&gt; &gt; Strace output:<br>
&gt; &gt; <br>
&gt; &gt; $ sudo strace -p 9285<br>
&gt; &gt; <br>
&gt; &gt; futex(0x2cddfc0, FUTEX_WAIT_PRIVATE, 0, NULL<br>
&gt; &gt; <br>
&gt; &gt; $ sudo strace -f -p 9285<br>
&gt; &gt; <br>
&gt; &gt; .....<br>
&gt; &gt; [pid=C2=A0 9287] getdents64(10, /* 14 entries */, 2048) =3D 336<b=
r>
&gt; &gt; [pid=C2=A0 9287] tgkill(9285, 9285, SIGRT_2) =3D 0<br>
&gt; &gt; [pid=C2=A0 9287] futex(0x7efbff70008c, FUTEX_LOCK_PI_PRIVATE,<br>
&gt; &gt; {tv_sec=3D1537887068, tv_nsec=3D51442144}) =3D -1 ETIMEDOUT (Conn=
ection timed out)<br>
&gt; <br>
&gt; it looks like musl tries to sync a setuid call across<br>
&gt; all threads (which is necessary since the linux syscall<br>
&gt; only changes the uid for the current thread instead of<br>
&gt; all threads so you can end up with different privileges<br>
&gt; in the same address space which is dangerous as well as<br>
&gt; non-posix conform setuid behaviour)<br>
&gt; <br>
&gt; it&#39;s possible that the setuid syncing is somehow wrong<br>
&gt; in musl, but it&#39;s more likely that there are threads<br>
&gt; that are not created by the c runtime (but from go) and<br>
&gt; thus the sync cannot possibly work.<br>
<br>
It actually can kinda work with such threads. musl&#39;s stop-the-world<br>
__synccall pokes all kernel-level threads in the same process (thread<br>
group) as the caller using signals and /proc/self/task to ensure it<br>
didn&#39;t miss any, so it will work as long as they haven&#39;t blocked<br=
>
libc-internal signals. There may be problems with the thread pointer<br>
being invalid, though. The __synccall framework itself does not use<br>
the TCB, but other stuff in the callback might. This should probably<br>
be fixed.<br>
<br>
&gt; so try to look for where set*id is called and ensure it<br>
&gt; is not called or called before any threads are created<br>
&gt; (or at least before any go threads are created)<br>
&gt; <br>
&gt; note that syscall.Set*id from go does not work either,<br>
&gt; it does not sync the threads (which is dangerously<br>
&gt; broken for a runtime that&#39;s always multi-threaded).<br>
<br>
Yep, that&#39;s unsafe to use. Any use is likely exploitable.<br>
<br>
Rich<br>
</blockquote></div>

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