Mailing List Archive: [Bug 68830] Deadlock when writing to file

[Bug 68830] Deadlock when writing to file

Apr 14, 2024, 11:36 PM

Post #1 of 5 (104 views)

https://bz.apache.org/bugzilla/show_bug.cgi?id=68830

thutop.dorje@gmail.com changed:

What |Removed |Added
----------------------------------------------------------------------------
Assignee|bugs@apr.apache.org |bugs@httpd.apache.org
Product|APR |Apache httpd-2
Component|APR |All
Version|1.6.2 |2.4.56

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[Bug 68830] Deadlock when writing to file [ In reply to ]

bugzilla at apache

Apr 15, 2024, 3:19 AM

Post #2 of 5 (101 views)

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--- Comment #1 from Yann Ylavic <ylavic.dev@gmail.com> ---
Possibly a duplicate of bug 61786, can you reproduce with libapr-1.6.5?

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[Bug 68830] Deadlock when writing to file [ In reply to ]

bugzilla at apache

Apr 15, 2024, 3:30 AM

Post #3 of 5 (101 views)

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--- Comment #2 from Yann Ylavic <ylavic.dev@gmail.com> ---
Or apr-1.7.4 which includes the fix too (r1819937 in 1.7.x, r1819938 in 1.6.x).

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[Bug 68830] Deadlock when writing to file [ In reply to ]

bugzilla at apache

Apr 15, 2024, 5:31 AM

Post #4 of 5 (101 views)

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--- Comment #3 from thutop.dorje@gmail.com ---
Not sure it's the same issue because the call stacks are different but I will
test it anyway with apr 1.7.4. I've not found a way to reproduce the problem so
I will have to let it run until it happen again.

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[Bug 68830] Deadlock when writing to file [ In reply to ]

bugzilla at apache

Apr 15, 2024, 8:05 AM

Post #5 of 5 (99 views)

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--- Comment #4 from Yann Ylavic <ylavic.dev@gmail.com> ---
It could be same issue because if the listener thread does not poll/empty the
wakeup pipe after the first wake up (which is the bug), the following wake ups
will fill the pipe and block indefinitely when it's full (your backtrace for
lwp/thread #6).

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