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Re: crash in __waitpid() via waitchld() in bash 4.4.23(1) on arm64
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From: |
Chet Ramey |
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Subject: |
Re: crash in __waitpid() via waitchld() in bash 4.4.23(1) on arm64 |
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Date: |
Wed, 17 Mar 2021 10:49:27 -0400 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 |
On 3/17/21 9:53 AM, Peter Morrow wrote:
Hello,
I've had a crash in bash 4.4.23(1) running on arm64 with glibc 2.28.
This is
a custom distro based off the yocto thud release. I've only seen this
twice in
the last 6 months or so and thus is not easy to recreate.
I've never seen it. My guess is that the signal-handling thread performs
some action that invalidates a resource __waitpid needs, and thread
scheduling causes the __waitpid thread to run, and crash, before the
signal-handling thread exits.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/