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Date: Sun, 21 Feb 2010 12:22:29 +0100 From: Johannes Berg <johannes@...solutions.net> To: Xiaotian Feng <xtfeng@...il.com> Cc: Américo Wang <xiyou.wangcong@...il.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org> Subject: Re: [2.6.33-rc5] Weird deadlock when shutting down On Sun, 2010-02-21 at 12:14 +0100, Johannes Berg wrote: > printk("got cpu\n"); > for_each_online_cpu(i) { > sm_work = per_cpu_ptr(stop_machine_work, i); > INIT_WORK(sm_work, stop_cpu); > queue_work_on(i, stop_machine_wq, sm_work); > } > /* This will release the thread on our CPU. */ > put_cpu(); > printk("put cpu\n"); As odd as that may be, it hangs in put_cpu() here. johannes -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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