Bug 213922 - Implement testcase crashing kernel BZ 209118
Implement testcase crashing kernel BZ 209118
Status: CLOSED RAWHIDE
Product: Fedora
Classification: Fedora
Component: frysk (Show other bugs)
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medium Severity medium
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Assigned To: Jan Kratochvil
Len DiMaggio
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Reported: 2006-11-03 14:35 EST by Jan Kratochvil
Modified: 2007-11-30 17:11 EST (History)
7 users (show)

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Last Closed: 2007-01-27 06:14:09 EST
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Attachments (Terms of Use)
Increase the number of ptrace(2)d processes of TestTaskForkedObserver to the max (661 bytes, patch)
2006-11-12 14:31 EST, Jan Kratochvil
no flags Details | Diff
Some trivia 16x repeating of the TestTaskForkedObserver testcase (1.02 KB, patch)
2006-11-12 15:12 EST, Jan Kratochvil
no flags Details | Diff

  None (edit)
Description Jan Kratochvil 2006-11-03 14:35:25 EST
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@redhat.com
Comment 1 Jan Kratochvil 2006-11-12 14:31:06 EST
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 15:12:25 EST
Created attachment 141006 [details]
Some trivia 16x repeating of the TestTaskForkedObserver testcase
Comment 3 Jan Kratochvil 2007-01-27 06:14:09 EST
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.

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