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Tue, 07 Feb 2023 06:30:08 -0800 (PST) Message-ID: Date: Tue, 7 Feb 2023 07:30:07 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:102.0) Gecko/20100101 Thunderbird/102.7.1 Subject: Re: [PATCH 0/2] iomap, splice: Fix DIO/splice_read race memory corruptor and kill off ITER_PIPE Content-Language: en-US To: David Howells , Al Viro , Christoph Hellwig Cc: Matthew Wilcox , Jan Kara , Jeff Layton , David Hildenbrand , Jason Gunthorpe , Logan Gunthorpe , Hillf Danton , linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20230207133916.3109147-1-dhowells@redhat.com> From: Jens Axboe In-Reply-To: <20230207133916.3109147-1-dhowells@redhat.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 4E5E11C0004 X-Stat-Signature: 876oriakr8kcuwuwcg53g1u3565gyj5t X-HE-Tag: 1675780210-476234 X-HE-Meta: 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 KH1PwtUZ CNye9HP06Vzkz8Xvq34TozfzVp18Oj2q5ZdZwKqx77uTZL948O4zybwUoyI5nfHvZ5XFLrN562CYraY2wfRNZ7jKciyDaC6cSU0RJPurF616XDZwAgnrjAlsY9Ueupk18ao30AJp4Q+0/CydVb3izM8drOafPmc+5M7q4rOpH298ZQJ6ktL0UGRhy5SA0IKDmfeaSS1JL5CGyh4hpCujTMT2NiFs0N184aBzXZFEmEgNHer87SfYqiKWp9izlgCcp8TcS+cyzKWofA5GwqpcW4YNH1UhpNFtsRhSM6kk73O8DGMOZVHtDvfDCuyykQqv9gE60zoekwrnThJVm9+ADAocbQJg7DBY3WMOrxuD7fdRhpFYxvmEY9HTclnOY8H9D05/X+U4WGCBSTH5YFrr0hlKNjUNff+CQjConB071Nc+3XOKja4TQOQnZtN4dhbL05pApm5QhUCEXseY= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 2/7/23 6:39?AM, David Howells wrote: > [!] Jens: Note that there's a window in the linux-block/for-next branch > with a memory corruptor bug that someone bisecting might hit. These > two patches would be better pushed to the front of my iov-extract > branch to eliminate the window. Would it be possible for you to > replace my branch in your for-next branch at this point? I'll check in on these two patches later today, but just wanted to say that we can definitely just toss the existing branch, and setup a new one based on -rc7 that adds these two first, then pulls in the other branch on top to avoid this. Not a big deal, and warranted in this case. -- Jens Axboe