From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin LaHaise Subject: Re: aio: kernel BUG at fs/aio.c:646! Date: Mon, 5 Aug 2013 12:08:28 -0400 Message-ID: <20130805160828.GH31864@kvack.org> References: <51FFAF34.20200@oracle.com> Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <51FFAF34.20200@oracle.com> Sender: owner-linux-aio@kvack.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Sasha Levin Cc: koverstreet@google.com, axboe@kernel.dk, Andrew Morton , torvalds@linux-foundation.org, LKML , linux-aio@kvack.org, trinity@vger.kernel.org Hi Sasha, On Mon, Aug 05, 2013 at 09:57:08AM -0400, Sasha Levin wrote: > Hi all, > > While fuzzing with trinity inside a KVM tools guest running latest -next > kernel, > I've stumbled on the following spew caused by a new BUG() added in "aio: fix > io_destroy() regression by using call_rcu()". I did some investigating, and it looks like there is a problem with db446a08c23d5475e6b08c87acca79ebb20f283c (aio: convert the ioctx list to table lookup v3). Can you confirm if reverting this patch eliminates the BUG() you're hitting? In my testing, I wasn't able to trigger the BUG(), but I was able to trip up slab corruption with debugging on. Thanks, -ben ... > Thanks, > Sasha -- "Thought is the essence of where you are now." -- To unsubscribe, send a message with 'unsubscribe linux-aio' in the body to majordomo@kvack.org. For more info on Linux AIO, see: http://www.kvack.org/aio/ Don't email: aart@kvack.org