Bug 171529

Summary: nptl segv's using pthread_kill
Product: [Fedora] Fedora Reporter: Angelo <ang3l0>
Component: glibcAssignee: Jakub Jelinek <jakub>
Status: CLOSED NOTABUG QA Contact: Brian Brock <bbrock>
Severity: high Docs Contact:
Priority: medium    
Version: 4   
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OS: Linux   
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Last Closed: 2005-10-23 07:05:43 UTC Type: ---
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testcase none

Description Angelo 2005-10-22 12:54:16 UTC 
Description of problem:
nptl thread segv's when killed

How reproducible: Sometimes


Steps to Reproduce:
1. run test code
2.
3.
  
Actual results:
Segmentation fault

Expected results:
live gracefully
Comment 1 Angelo 2005-10-22 12:54:16 UTC 
Created attachment 120280 [details]
testcase
Comment 2 Jakub Jelinek 2005-10-23 07:05:43 UTC 
I haven't been able to reproduce it yet, but the testcase is certainly buggy.
See
http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_04.html#tag_02_04_03
None of the calls you make in sig_handler are allowed in signal handlers,
none of printf, exit, pthread_self and pthread_exit are async-signal safe
functions.
E.g. when thread_function enters pthread_exit call in it and a signal comes in,
a crash is very much expected.