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Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1rK2tg-00843F-Cj; Sun, 31 Dec 2023 20:59:00 +0000 Date: Sun, 31 Dec 2023 20:59:00 +0000 From: Matthew Wilcox To: Genes Lists Cc: linux-kernel@vger.kernel.org, Andrew Morton , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: Re: 6.6.8 stable: crash in folio_mark_dirty Message-ID: References: <8bb29431064fc1f70a42edef75a8788dd4a0eecc.camel@sapience.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8bb29431064fc1f70a42edef75a8788dd4a0eecc.camel@sapience.com> X-Rspamd-Queue-Id: 7FEB0180010 X-Rspam-User: X-Stat-Signature: u1x1m8mr9w5j4shw4mt3bka6d71ua5uj X-Rspamd-Server: rspam01 X-HE-Tag: 1704056350-573204 X-HE-Meta: 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 GGm/Y/iO Sp4RcBQ2HnacqXOaDobZXCR8KxgT9g/nalLwyHnwzxGpN8izwg6Ebx7huflMpRO6s37uctnQQOYlk3LHnrAbg/wllYTCL04PCc3X8ZsthfIGKuDmFDv73T0WoR+20v3JEfRoWi6+V32v96Iw5sqg0/Ipl2jh31D2Nskf70sbH1+xlTdmzWiRjr4GmJHOuHYxsuXROjnoLUKfya89Jhd5wlbkxCBYiqQgDVHM3nzmVL93MqWs= X-Bogosity: Ham, tests=bogofilter, spamicity=0.001209, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sat, Dec 30, 2023 at 10:23:26AM -0500, Genes Lists wrote: > Apologies in advance, but I cannot git bisect this since machine was > running for 10 days on 6.6.8 before this happened. This problem simply doesn't make sense. There's just no way we shoud be able to get a not-uptodate folio into the page tables. We do have one pending patch which fixes a situation in which we can get some very odd-looking situations due to reusing a page which has been freed. I appreciate your ability to reproduce this is likely nil, but if you could add https://lore.kernel.org/all/20231220214715.912B4C433CA@smtp.kernel.org/ to your kernel, it might make things more stable for you.