[PATCH] Fix possible deadlock in stdio locking code

Andreas Schwab schwab@redhat.com
Tue Oct 18 15:13:00 GMT 2011


Siddhesh Poyarekar <spoyarek@redhat.com> writes:

> 1) thread A pushes the cleanup callback flush_cleanup using
>    _IO_cleanup_region_start_noarg()
>
> 2) Some other thread calls pthread_cancel on thread A before it gets
>    to call _IO_lock_lock(list_all_lock)

That pthread_cancel call will have no effect until the next cancellation
point.

Andreas.

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Andreas Schwab, schwab@redhat.com
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