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Date:      Thu, 11 Apr 2019 09:37:18 +0000
From:      bugzilla-noreply@freebsd.org
To:        threads@FreeBSD.org
Subject:   [Bug 237195] pthread_mutex_unlock crash as unlocked mutex destroyed by signaled thread
Message-ID:  <bug-237195-13406-RTZx7tCakA@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-237195-13406@https.bugs.freebsd.org/bugzilla/>
References:  <bug-237195-13406@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D237195

Konstantin Belousov <kib@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |kib@FreeBSD.org

--- Comment #1 from Konstantin Belousov <kib@FreeBSD.org> ---
I was unable to reproduce the issue with your test program.

Regardless of it, there is indeed an access to the mutex memory after the
unlock.  Please try the attached patch and report back.  Note that seemingly
similar check in _mutex_leave_robust() only compares addresses.

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