Bug 213922

Summary: Implement testcase crashing kernel BZ 209118
Product: [Fedora] Fedora Reporter: Jan Kratochvil <jan.kratochvil>
Component: fryskAssignee: Jan Kratochvil <jan.kratochvil>
Status: CLOSED RAWHIDE QA Contact: Len DiMaggio <ldimaggi>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: mcvet, mjw, npremji, pmuldoon, rmoseley, scox, timoore
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OS: Linux   
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Last Closed: 2007-01-27 11:14:09 UTC Type: ---
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Description Flags
Increase the number of ptrace(2)d processes of TestTaskForkedObserver to the max
none
Some trivia 16x repeating of the TestTaskForkedObserver testcase none

Description Jan Kratochvil 2006-11-03 19:35:25 UTC 
Bug 209118 describes kernel crashing conditions by the gdb testcases:
chng-syms.exp checkpoint.exp

frysk should include this isolated invocation in its testsuite:
http://sources.redhat.com/cgi-bin/cvsweb.cgi/frysk-imports/tests/?cvsroot=frysk

Related Bugs are: Bug 213554, Bug 207002, Bug 212736, Bug 209118, Bug 210249.

Requested by: cagney
Comment 1 Jan Kratochvil 2006-11-12 19:31:06 UTC 
Created attachment 141005 [details]
Increase the number of ptrace(2)d processes of TestTaskForkedObserver to the max

As Bug 209118 / Prarit Bhargava found that the crashing reason is most probably
race during exiting of ptrace(2)d processes I just found the existing
TestTaskForkedObserver to be the optimal testcase for it.
It can get more harnessed by increasing the number of ptrace(2)d processes
there [attachment] but it is not needed at all.
while :;do ./TestRunner frysk.proc.TestTaskForkedObserver;done
Comment 2 Jan Kratochvil 2006-11-12 20:12:25 UTC 
Created attachment 141006 [details]
Some trivia 16x repeating of the TestTaskForkedObserver testcase
Comment 3 Jan Kratochvil 2007-01-27 11:14:09 UTC 
The requested testcase was already implemented as `TestTaskForkedObserver'.
The testsuite was crashing the kernel before already.
The problem looks fixed for me since kernel-2.6.18-1.3002.el5 as announced in
Bug 209118 Comment 37.