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From: "yd-huang at outlook dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/26275] abort(3) is not signal-safe
Date: Wed, 12 Aug 2020 07:24:40 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D26275

--- Comment #3 from hyd-dev <yd-huang at outlook dot com> ---
But what about the lock:
https://sourceware.org/git/?p=3Dglibc.git;a=3Dblob;f=3Dstdlib/abort.c;h=3Dd=
f98782dd7ea6c1476184a365bd9f3954f481a18;hb=3Drefs/heads/master#l54?
Holding that lock is not signal-safe, even it is recursive. For example, a
thread is calls abort(3) and acquires the lock. Then another thread fork(2),
and the child process calls abort(3) and tries to lock the lock, leading to
deadlock.

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