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Message-ID: <20090422163032.GV4593@kernel.dk> Date: Wed, 22 Apr 2009 18:30:32 +0200 From: Jens Axboe <jens.axboe@...cle.com> To: Steve Wise <swise@...ngridcomputing.com> Cc: balbir@...ux.vnet.ibm.com, Andrew Morton <akpm@...ux-foundation.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Wolfram Strepp <wstrepp@....de> Subject: Re: [BUG] rbtree bug with mmotm 2009-04-14-17-24 On Wed, Apr 22 2009, Steve Wise wrote: > >>> >>> No there are a few patches applied that are heading upstream, but one >>> is in the NFS RDMA server which isn't loaded yet and the rest are in >>> iw_cxgb3 (iwarp driver) which also hasn't loaded at the time we >>> crash. NOTE: Out of 4 power cycles, one booted up ok, 3 hit the >>> crash. >>> >>> >>> >> >> By the way, this one looks different from the last one I saw. So its >> not consistently crashing in the same spot. The one I hit yesterday >> (which I don't have the OOPs dump for was in rb_erase(). >> >> Steve. > > I'll start bisecting to isolate this. Don't bother, I see what the bug is now. It's caused by commit a36e71f996e25d6213f57951f7ae1874086ec57e and it's due to ->ioprio being changed without the prio rb root being adjusted. I'll provide a fix shortly. -- Jens Axboe -- 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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