Messages in this thread | | | Date | Thu, 19 Jun 2008 23:17:48 +0200 | From | Heiko Carstens <> | Subject | Re: [BUG] CFS vs cpu hotplug |
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On Thu, Jun 19, 2008 at 08:05:10PM +0200, Peter Zijlstra wrote: > On Thu, 2008-06-19 at 18:19 +0200, Heiko Carstens wrote: > > Hi Ingo, Peter, > > > > I'm still seeing kernel crashes on cpu hotplug with Linus' current git tree. > > All I have to do is to make all cpus busy (make -j4 of the kernel source is > > sufficient) and then start cpu hotplug stress. > > It usually takes below a minute to crash the system like this: > > > > Unable to handle kernel pointer dereference at virtual kernel address 005a800000031000 > > Oops: 0038 [#1] PREEMPT SMP > > Modules linked in: > > CPU: 1 Not tainted 2.6.26-rc6-00232-g9bedbcb #356 > > Process swapper (pid: 0, task: 000000002fe7ccf8, ksp: 000000002fe93d78) > > Krnl PSW : 0400e00180000000 0000000000032c6c (pick_next_task_fair+0x34/0xb0) > > I presume this is: > > se = pick_next_entity(cfs_rq);
Yes, that is correct. Sorry, missed to tell about this detail.
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