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SubjectRe: [BUG] CFS vs cpu hotplug
Ingo Molnar wrote:
> * Lai Jiangshan <laijs@cn.fujitsu.com> wrote:
>
>> The following oops still occurred whether this patch is applied or not.
>
>> [<ffffffff8059372c>] notifier_call_chain+0x33/0x5b
>> [<ffffffff802476a9>] __raw_notifier_call_chain+0x9/0xb
>> [<ffffffff802476ba>] raw_notifier_call_chain+0xf/0x11
>> [<ffffffff805736d6>] _cpu_down+0x191/0x256
>> [<ffffffff805737c1>] cpu_down+0x26/0x36
>> [<ffffffff805749c1>] store_online+0x32/0x75
>> [<ffffffff803d1982>] sysdev_store+0x24/0x26
>> [<ffffffff802d2551>] sysfs_write_file+0xe0/0x11c
>> [<ffffffff80290e6b>] vfs_write+0xae/0x137
>> [<ffffffff802913d3>] sys_write+0x47/0x70
>> [<ffffffff8020b1eb>] system_call_after_swapgs+0x7b/0x80
>
> hm, there were multiple problems in this area and a lot of dormant bugs.
> Do you have this recent upstream commit in your tree:
Hi, Ingo
I tested it again with the most recent upstreams(including the
following patch) committed, the oops still occurred.

Thanks, Lai Jiangshan

>
> | commit fcb43042ef55d2f46b0efa5d7746967cef38f056
> | Author: Zhang, Yanmin <yanmin_zhang@linux.intel.com>
> | Date: Tue Jun 24 16:06:23 2008 +0800
> |
> | x86: fix cpu hotplug crash
> |
> | Vegard Nossum reported crashes during cpu hotplug tests:
> |
> | http://marc.info/?l=linux-kernel&m=121413950227884&w=4
>
> ?
>
> Ingo
>
>
>




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