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Re: [Qemu-devel] [PATCH 1/2] qemu-thread: do not use PTHREAD_MUTEX_ERROR
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] [PATCH 1/2] qemu-thread: do not use PTHREAD_MUTEX_ERRORCHECK |
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Date: |
Sat, 07 Mar 2015 18:05:27 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 |
On 06/03/2015 16:54, Eric Blake wrote:
> > The problem is that releasing error-checking locks in the child
> > fails under glibc with EPERM, because the mutex stores a different
> > owner tid than the duplicated thread in the child process.
>
> Is that a bug in glibc?
Possibly, but I wouldn't be surprised if other libcs had the same bug.
And if you ran it through the Austin Group, I wouldn't be surprised if
it were declared undefined.
Paolo