Messages in this thread | | | Date | Tue, 16 Oct 2007 19:00:37 +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 11:46:31AM +0200, Ingo Molnar wrote: > > * Ingo Molnar <mingo@elte.hu> 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. > > ah, this is likely with the recent scheduler commits included as well, > right? > > if it's reproducable, could you try with group scheduling disabled, i.e. > with: > > # CONFIG_FAIR_GROUP_SCHED is not set > > as that would be the main suspect for such type of a crash.
Ok, preliminary results with this disabled seem to get us past kernbench. I am rerunning with it enabled to confirm it blammo's.
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