Messages in this thread | | | Date | Tue, 16 Oct 2007 11:03:11 +0100 | From | Andy Whitcroft <> | Subject | Re: [BUG] 2.6.23-git8 kernel oops at __rb_rotate_left+0x7/0x70 |
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On Tue, Oct 16, 2007 at 11:10:12AM +0200, Ingo Molnar wrote: > > * Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote: > > > While running kernbench with the 2.6.23-git8 following oops is > > produced > > > > Unable to handle kernel NULL pointer dereference at 0000000000000010 RIP: > > [<ffffffff8033f347>] __rb_rotate_left+0x7/0x70 > > that looks nasty ... > > and -git8 should have the v2.6.23 scheduler code in essence.
To fill in a few details. This was triggered in the middle of a kernbench run on the machine. A job with just dbench runs in it ran to completion. The machine is a 4 node numa x86_64 system.
Seems that most schedular options are on:
CONFIG_FAIR_GROUP_SCHED=y CONFIG_FAIR_USER_SCHED=y
At the moment we don't have any historical jobs back from 2.6.23 so I cannot be more specific as to when it arrived in mainline. The x86/x86_64 merge broke our build process; a bad assumption here, not a problem with the merge.
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