Re: Libc-Test: Tests failing on Ubuntu VM

[Szabolcs Nagy <nsz@port70.net>]

* Max Ruttenberg <mruttenberg@emutechnology.com> [2016-03-30 13:22:19 -0400]:
> this is what my src/regression/REPORT file looks like:
> 
> ******************************************************************************************************************************
> src/regression/malloc-brk-fail.c:33: malloc did not fail with ENOMEM, got
> Operation not permitted
> FAIL ./src/regression/malloc-brk-fail-static.exe [status 1]
> src/regression/malloc-brk-fail.c:33: malloc did not fail with ENOMEM, got
> Operation not permitted
> FAIL ./src/regression/malloc-brk-fail.exe [status 1]
> src/regression/malloc-oom.c:16: expected ENOMEM, got Operation not permitted
> FAIL ./src/regression/malloc-oom-static.exe [status 1]
> src/regression/malloc-oom.c:16: expected ENOMEM, got Operation not permitted
> FAIL ./src/regression/malloc-oom.exe [status 1]
> FAIL ./src/regression/putenv-doublefree-static.exe [signal Segmentation
> fault]
> FAIL ./src/regression/putenv-doublefree.exe [signal Segmentation fault]
> src/regression/setenv-oom.c:23: expected ENOMEM, got Operation not permitted
> FAIL ./src/regression/setenv-oom-static.exe [status 1]
> src/regression/setenv-oom.c:23: expected ENOMEM, got Operation not permitted
> FAIL ./src/regression/setenv-oom.exe [status 1]
> ******************************************************************************************************************************
> 
> Is the brk system call still kosher? I thought malloc was supposed to use
> something mmap.
> 

i've seen such things: mmap fails with EPERM
instead of ENOMEM when the system runs out of
virtual address space, i don't remember the
details though, you can debug it with strace.

if you figure it out i'd like to know when
this happens (probably a kernel bug).

putenv-doublefree was recently fixed, so
your musl is probably not up to date.