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Date:      Mon, 09 May 2022 12:32:32 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 263825] umtx: Sporadic hang in glibc test case in Linuxulator's signal trampoline code on arm64 (passes on amd64)
Message-ID:  <bug-263825-227-ZXUFK085yo@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-263825-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-263825-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D263825

John F. Carr <jfc@mit.edu> changed:

           What    |Removed                     |Added
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                 CC|                            |jfc@mit.edu

--- Comment #3 from John F. Carr <jfc@mit.edu> ---
I can confirm this running native stable/13 on Ampere eMAG and current on
Cortex A-57.  The program sometimes hangs.

Running in a debugger I get occasional addressing errors (segfault or bad
address). I think the errors are caused by a bad interaction between lldb a=
nd
system calls.  Conceivably it is a scheduling problem that only shows up wi=
th a
debugger.

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