Messages in this thread | | | Date | Thu, 15 Apr 2010 18:15:59 -0700 (PDT) | From | Ben Gamari <> | Subject | Re: Lockup inside of stop_machine() during modprobe aes (was Re: Another AR5008 hang) |
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On Thu, 15 Apr 2010 17:22:05 -0400, Andrew Morton <akpm@linux-foundation.org> wrote: > On Tue, 06 Apr 2010 11:08:22 -0700 (PDT) Ben Gamari <bgamari.foss@gmail.com> wrote: > > ... > > In particular, it seems that the kernel is deadlocking inside of > > stop_machine() while flushing workqueues. > > ... > > My guess would be that ieee80211 is calling crypto->request_module() > under rtnl_lock, and the fact that rtnl_lock is held is causing > modprobe->stop_machine to not complete. > > > P.S. I am now quite certain that I was mistaken in saying that 2.6.33 was > > affected. This seems to just be a 2.6.34 issue. > > OK, thanks, I'll ask Rafael and Maciej to track this as a post-2.6.33 > regression, probably wireless.
Thanks!
- Ben
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