60 lines
1.4 KiB
Plaintext
60 lines
1.4 KiB
Plaintext
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PURPOSE of /tools/glibc/Regression/bz522528-pthread-join-hangs-if-a-thread-calls-setuid
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Description: Test for bz522528 (pthread_join() hangs if a thread calls setuid())
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Author: Petr Muller <pmuller@redhat.com>
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Bug summary: pthread_join() hangs if a thread calls setuid()
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Bugzilla link: https://bugzilla.redhat.com/show_bug.cgi?id=522528
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Description:
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Created an attachment (id=360523)
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reproducer's source file
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Description of problem:
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When a program creates a thread which calls setuid() and terminates, the other
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thread trying to wait for it hangs.
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Version-Release number of selected component (if applicable):
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RHEL5 (2.5-34), also RHEL4 and the newest upstream sources
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How reproducible:
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always
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Steps to Reproduce:
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1. Compile attached source file of reproducer:
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$ gcc -o reproducer reproducer.c -lpthread
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2. and run it:
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$ ./reproducer
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Actual results:
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program hangs
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Expected results:
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program should end without hanging
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Additional info:
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This bug has appeared quite a long ago, you can find it in a sourceware BZ with existing patch at:
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http://sources.redhat.com/bugzilla/show_bug.cgi?id=3270#c2
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The patch solves the problem, but I have no idea why this hasn't been applied in the upstream already. I have attached a slightly modiffied version of the patch to be able to be applied and built on RHEL5 glibc sources and it works and solves the problem.
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There is also existing BZ for RHEL4:
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https://bugzilla.redhat.com/show_bug.cgi?id=248671
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