Messages in this thread | | | Subject | Re: 2.6.23-rc2-mm1: hang, prop_norm_single involved | From | Peter Zijlstra <> | Date | Thu, 09 Aug 2007 17:30:32 +0200 |
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On Thu, 2007-08-09 at 14:45 +0200, Peter Zijlstra wrote: > On Thu, 2007-08-09 at 15:10 +0400, Alexey Dobriyan wrote: > > LTP run reproducably hangs during rwtest01 test > > rwtest -N rwtest01 -c -q -i 60s -f sync 10%25000:rs-sync=$$ > > Calltrace is always the same: > >
> [root@opteron ~]# PATH=/testcases/bin/:$PATH /testcases/bin/rwtest -N rwtest01 -c -q -i 60s -f sync 10%25000:rs-sync=$$ > rwtest01 1 PASS : Test passed > [root@opteron ~]# PATH=/testcases/bin/:$PATH /testcases/bin/rwtest -N rwtest01 -c -q -i 60s -f sync 10%25000:rs-sync=$$ > > I can reproduce, but not always. > > Also, since the task->dirties member is initialized in fork.c this > should either _always_ happen or never. So this does point to some > memory corruption, ->dirties is the very last member of the task struct. > > /me goes try with slab_debug,...
to no avail, banging head against the wall what is happening here.
Andrew, could you:
# mm-dirty-balancing-for-tasks.patch
while I try to figure this one out?
That seems to make the unhappies I could reproduce here go away.
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