Messages in this thread | | | Date | Sat, 20 Feb 2010 17:30:55 +0800 | Subject | Re: [2.6.33-rc5] Weird deadlock when shutting down | From | Américo Wang <> |
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On Thu, Feb 18, 2010 at 5:36 PM, Johannes Berg <johannes@sipsolutions.net> wrote: > On Fri, 2010-01-29 at 15:41 +1100, Benjamin Herrenschmidt wrote: >> Hi Ingo ! >> >> Johannes and I see this on our quad G5s... it -could- be similar to >> one reported a short while ago by Xiaotian Feng <xtfeng@gmail.com> >> under the subject [2.6.33-rc4] sysfs lockdep warnings on cpu hotplug. >> >> Basically, the machine deadlocks right after printing the following >> when doing a shutdown: >> >> halt/4071 is trying to acquire lock: >> (s_active){++++.+}, at: [<c0000000001ef868>] >> .sysfs_addrm_finish+0x58/0xc0 >> >> but task is already holding lock: >> (&per_cpu(cpu_policy_rwsem, cpu)){+.+.+.}, at: [<c0000000004cd6ac>] >> .lock_policy_rwsem_write+0x84/0xf4 >> >> which lock already depends on the new lock. >> >> the existing dependency chain (in reverse order) is: > > This is still happening with -rc8. Any news? >
Hey, johannes
Not sure if you made some mistake here, the one you report here [1] is _not_ the same with this one reported by Benjamin.
Please make sure what you are talking about here is the same one.
Thanks.
1. http://lkml.org/lkml/2010/2/18/33 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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