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From: Rich Felker <dalias@libc.org>
To: musl@lists.openwall.com
Cc: "Milan P. Stanić" <mps@arvanta.net>
Subject: Re: [musl] [PATCH v2] MT fork
Date: Thu, 29 Oct 2020 12:20:57 -0400	[thread overview]
Message-ID: <20201029162057.GS534@brightrain.aerifal.cx> (raw)
In-Reply-To: <20201029161348.GA2947641@port70.net>

On Thu, Oct 29, 2020 at 05:13:48PM +0100, Szabolcs Nagy wrote:
> * Milan P. Stanić <mps@arvanta.net> [2020-10-29 00:06:10 +0100]:
> > On Wed, 2020-10-28 at 14:56, Rich Felker wrote:
> > > On Tue, Oct 27, 2020 at 05:17:35PM -0400, Rich Felker wrote:
> > > > > > 
> > > > > > Will follow up with draft patch for testing.
> > > > > 
> > > > > Patch attached. It should suffice for testing and review of whether
> > > > > there are any locks/state I overlooked. It could possibly be made less
> > > > > ugly too.
> > > > > [...]
> > > > 
> > > > Another bug:
> > > > [...]
> > > 
> > > And an updated version of the patch with both previously reported bugs
> > > fixed, for the purpose of users/distros wanting to test without
> > > manually fixing up the patch. Attached.
> >  
> > Applied this patch on top of current musl master, build it on Alpine and
> > installed.
> > 
> > Tested by building ruby lang. Works fine.
> > Also tested building zig lang, works fine.
> > But crystal lang builds fine, but running it hangs. strace shows:
> > -------------
> > [pid  5573] futex(0x7efc50fba9e4, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
> > [pid  5568] futex(0x7efc5118f984, FUTEX_REQUEUE_PRIVATE, 0, 1, 0x7efc514b67a4) = 1
> > [pid  5568] futex(0x7efc514b67a4, FUTEX_WAKE_PRIVATE, 1) = 1
> > [pid  5571] <... futex resumed>)        = 0
> > [pid  5568] futex(0x7efc511099e4, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
> > [pid  5571] futex(0x7efc510409e4, FUTEX_WAIT_PRIVATE, 2, NULL
> > -------------
> > where it hangs.
> 
> try to attach gdb to the process that hang and do
> 
> thread apply all bt

Thanks -- I meant to reply to this earlier but forgot to.

> (make sure musl-dbg is installed)

If using a replacement musl, I think you'd just ensure it's built with
-g rather than relying on distro musl-dbg package, which will be for a
mismatched build/version.

Rich

  reply	other threads:[~2020-10-29 16:21 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-26  0:50 [musl] Status report and " Rich Felker
2020-10-26  0:59 ` Rich Felker
2020-10-26  3:29   ` Rich Felker
2020-10-26 18:44     ` Érico Nogueira
2020-10-26 19:52       ` Rich Felker
2020-10-26 20:11         ` Érico Nogueira
2020-10-27 21:17   ` Rich Felker
2020-10-28 18:56     ` [musl] [PATCH v2] " Rich Felker
2020-10-28 23:06       ` Milan P. Stanić
2020-10-29 16:13         ` Szabolcs Nagy
2020-10-29 16:20           ` Rich Felker [this message]
2020-10-29 20:55           ` Milan P. Stanić
2020-10-29 22:21             ` Szabolcs Nagy
2020-10-29 23:00               ` Milan P. Stanić
2020-10-29 23:27                 ` Rich Felker
2020-10-30  0:13                   ` Rich Felker
2020-10-30  7:47                   ` Milan P. Stanić
2020-10-30 18:52                     ` Milan P. Stanić
2020-10-30 18:57                       ` Rich Felker
2020-10-30 21:31                         ` Ariadne Conill
2020-10-31  3:31                           ` Rich Felker
2020-11-06  3:36                             ` Rich Felker
2020-11-08 16:12                               ` Szabolcs Nagy
2020-11-09 17:07                                 ` Rich Felker
2020-11-09 18:01                                   ` Érico Nogueira
2020-11-09 18:44                                     ` Rich Felker
2020-11-09 18:54                                       ` Érico Nogueira
2020-11-09 21:59                                   ` Szabolcs Nagy
2020-11-09 22:23                                     ` Rich Felker
2020-11-11  0:52                                       ` Rich Felker
2020-11-11  6:35                                         ` Alexey Izbyshev
2020-11-11 11:25                                           ` Szabolcs Nagy
2020-11-11 14:56                                             ` Rich Felker
2020-11-11 16:35                                         ` Rich Felker
2020-10-31  7:22                           ` Timo Teras
2020-10-31 13:29                             ` Szabolcs Nagy
2020-10-31 13:35                               ` Timo Teras
2020-10-31 14:41                                 ` Ariadne Conill
2020-10-31 14:49                                   ` Rich Felker
2020-10-31 14:48                                 ` Rich Felker
2020-10-31 14:47                             ` Rich Felker
2020-10-29 23:32                 ` Szabolcs Nagy

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