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Date: Sat, 18 Feb 2012 22:24:36 +0400 From: Cyrill Gorcunov <gorcunov@...nvz.org> To: Vasiliy Kulikov <segoon@...nwall.com> Cc: Przemysław Pawełczyk <przemyslaw@...elczyk.it>, lkml <linux-kernel@...r.kernel.org>, akpm@...ux-foundation.org, Oleg Nesterov <oleg@...hat.com> Subject: Re: [BUG] task->nsproxy was unexpectedly NULL (caught in exit_shm) On Sat, Feb 18, 2012 at 09:39:50PM +0400, Vasiliy Kulikov wrote: ... > > > > So task->nsproxy was unexpectedly NULL atm. > > The bug happened only once so far. > > I'm confused. How ->nsproxy can be NULL in do_exit()? AFAIU, it is not a > special process (i.e. init or udev), but a common chrome process. > > Could it be missing get_nsproxy() somewhere? And as a result, freed > current->nsproxy while still having active users. > Probably it would worth to repeat this issue without proprientary drivers loaded. Also I wonder why don't we use rcu_assign_pointer for nsproxy in copy_namespaces. Cyrill -- 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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