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Thu, 28 Nov 2024 22:26:59 +0100 Message-ID: Date: Fri, 29 Nov 2024 07:56:52 +1030 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [syzbot] [btrfs?] kernel BUG in __folio_start_writeback To: syzbot , akpm@linux-foundation.org, clm@fb.com, dsterba@suse.com, josef@toxicpanda.com, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, nogikh@google.com, syzkaller-bugs@googlegroups.com, willy@infradead.org, wqu@suse.com References: <6748bcc3.050a0220.253251.008c.GAE@google.com> Content-Language: en-US From: Qu Wenruo Autocrypt: addr=quwenruo.btrfs@gmx.com; keydata= xsBNBFnVga8BCACyhFP3ExcTIuB73jDIBA/vSoYcTyysFQzPvez64TUSCv1SgXEByR7fju3o 8RfaWuHCnkkea5luuTZMqfgTXrun2dqNVYDNOV6RIVrc4YuG20yhC1epnV55fJCThqij0MRL 1NxPKXIlEdHvN0Kov3CtWA+R1iNN0RCeVun7rmOrrjBK573aWC5sgP7YsBOLK79H3tmUtz6b 9Imuj0ZyEsa76Xg9PX9Hn2myKj1hfWGS+5og9Va4hrwQC8ipjXik6NKR5GDV+hOZkktU81G5 gkQtGB9jOAYRs86QG/b7PtIlbd3+pppT0gaS+wvwMs8cuNG+Pu6KO1oC4jgdseFLu7NpABEB AAHNIlF1IFdlbnJ1byA8cXV3ZW5ydW8uYnRyZnNAZ214LmNvbT7CwJQEEwEIAD4CGwMFCwkI BwIGFQgJCgsCBBYCAwECHgECF4AWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCZxF1YAUJEP5a sQAKCRDCPZHzoSX+qF+mB/9gXu9C3BV0omDZBDWevJHxpWpOwQ8DxZEbk9b9LcrQlWdhFhyn xi+l5lRziV9ZGyYXp7N35a9t7GQJndMCFUWYoEa+1NCuxDs6bslfrCaGEGG/+wd6oIPb85xo naxnQ+SQtYLUFbU77WkUPaaIU8hH2BAfn9ZSDX9lIxheQE8ZYGGmo4wYpnN7/hSXALD7+oun tZljjGNT1o+/B8WVZtw/YZuCuHgZeaFdhcV2jsz7+iGb+LsqzHuznrXqbyUQgQT9kn8ZYFNW 7tf+LNxXuwedzRag4fxtR+5GVvJ41Oh/eygp8VqiMAtnFYaSlb9sjia1Mh+m+OBFeuXjgGlG VvQFzsBNBFnVga8BCACqU+th4Esy/c8BnvliFAjAfpzhI1wH76FD1MJPmAhA3DnX5JDORcga CbPEwhLj1xlwTgpeT+QfDmGJ5B5BlrrQFZVE1fChEjiJvyiSAO4yQPkrPVYTI7Xj34FnscPj /IrRUUka68MlHxPtFnAHr25VIuOS41lmYKYNwPNLRz9Ik6DmeTG3WJO2BQRNvXA0pXrJH1fN GSsRb+pKEKHKtL1803x71zQxCwLh+zLP1iXHVM5j8gX9zqupigQR/Cel2XPS44zWcDW8r7B0 q1eW4Jrv0x19p4P923voqn+joIAostyNTUjCeSrUdKth9jcdlam9X2DziA/DHDFfS5eq4fEv ABEBAAHCwHwEGAEIACYCGwwWIQQt33LlpaVbqJ2qQuHCPZHzoSX+qAUCZxF1gQUJEP5a0gAK CRDCPZHzoSX+qHGpB/kB8A7M7KGL5qzat+jBRoLwB0Y3Zax0QWuANVdZM3eJDlKJKJ4HKzjo B2Pcn4JXL2apSan2uJftaMbNQbwotvabLXkE7cPpnppnBq7iovmBw++/d8zQjLQLWInQ5kNq Vmi36kmq8o5c0f97QVjMryHlmSlEZ2Wwc1kURAe4lsRG2dNeAd4CAqmTw0cMIrR6R/Dpt3ma +8oGXJOmwWuDFKNV4G2XLKcghqrtcRf2zAGNogg3KulCykHHripG3kPKsb7fYVcSQtlt5R6v HZStaZBzw4PcDiaAF3pPDBd+0fIKS6BlpeNRSFG94RYrt84Qw77JWDOAZsyNfEIEE0J6LSR/ In-Reply-To: <6748bcc3.050a0220.253251.008c.GAE@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:9tG/jfD+TLQPzLWdMpcNXJxJsQrE8D1mzhoW9oE2auLTt6Z9XaI c9jmUSnQeAFfWYHi45LeZeuRojYtCwxIsfbpbjfcffT+xTgyRuX1YwVXwZrzZoI+ga/9X7g k7I6hbI/4cmYw7BFnISy4nQ/17O3EcSKh2A8NQ6J01RNYgqkYNgcfS+oMI8LiSS/OvetjAO 0IDzkWn1guWnLMGrIOzNQ== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:JJMo9rPL0pM=;DfO4/CedskYDXEBExa5mwG8H+DA QlXY+Vg49EtjvGaFms2HGIv3cpE6vIu8igtxRQGzZNtdMMAD/P2/IXh/J85KD7Bq2GKET10Ob Zbw8PQBrmnt/JYmlxiZJkOLmF3KIl586ReA9CmtKjNxmgljniyde4546UwjSizGK3K11EaO/A N/eQD0Vo6/uRp9sEu9qXqVuRPT4/TWxAR+wpeqojGP8z848x2nbH9m+CB82CRpS5NYs5WeO+v aPOtCk1EpY4h4s2Jjf3GEz5sSGM5FpGQnVduq0b6/PDvG5l6Svyn4aLgZ6UGd6JOyAa0iXcJM BJqWWu23cy4+E61d3pnAlSFt8BTSHbQV40rOD/axMl0GNaP8w7Wc64FiRupoqWUK+yDao/mAE mwxzkLykMUUyT4fw1ysVmtPWaAkXM9NNJ12EXL8ihmnJC3I4DbOdEdVAxCUhbNHs861b1zhZP doh+cJY2PXkDaWKPEhPm9lXn0HuH2UhqZboktV6Rc3VHT3VtXvfUFkiukL+B7hBxLpnu/Of/Q yBrd3kNjptsbchCqiwDRjTliNDH6+OfVECNojLNtSUB+Hdp3t3JpcbHwv66jBekax9ATJgMtV KdCl08sthq64I/TkuCv7wHHmGjfopNfi8++u4ipihNjiolBxmmNcU9150JJy+TziE4po3Tzo4 18iwRMBkbMAQMz8/B6qq4Dx0ntgQfmlSSiOF9B5m5fxNcasaanVxoK3ASpGUQQcj+M1Gi2Hxn ivtstQz1Xgyns/Oef5ubAAaXYbQ6SvDVb03O73hS7okshqZenkZW2uN/bL1us8BQ/pyYkTIqI svg2RFadOhNa4/K7SYJVr2tDSBiAjQMoD+SBWEQIhFj0ATpEbmPasN/71EgJTMgPDawyqhs5N TseEB6aetl1BN+Z6eD1prQA8cd1QwN0cZQpeGobYNEHFErk9uVA0bil8mfuGOW73XFN1tBe6I R4x9sAowmCNLpj86IqoVYNDVtIw/s9jdC47gHkvkxBtygAQpBzjhPyYGFi4l3WJ8dDWren5Xs wstGnlkciqQfL3F+czW3dr4w+h2zLMj3pXE36mrBVF2p0+aaqtniNObSQ+fUNNi5KPBuJUS9L QyA9wBkONeZaWyT1P6fIUd4QWPcLEr # syz test: https://github.com/adam900710/linux.git writeback_fix =E5=9C=A8 2024/11/29 05:26, syzbot =E5=86=99=E9=81=93: > syzbot has bisected this issue to: > > commit c87c299776e4d75bcc5559203ae2c37dc0396d80 > Author: Qu Wenruo > Date: Thu Oct 10 04:46:12 2024 +0000 > > btrfs: make buffered write to copy one page a time > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=3D165dd3c05= 80000 > start commit: 228a1157fb9f Merge tag '6.13-rc-part1-SMB3-client-fixes'= o.. > git tree: upstream > final oops: https://syzkaller.appspot.com/x/report.txt?x=3D155dd3c05= 80000 > console output: https://syzkaller.appspot.com/x/log.txt?x=3D115dd3c05800= 00 > kernel config: https://syzkaller.appspot.com/x/.config?x=3D402159daa216= c89d > dashboard link: https://syzkaller.appspot.com/bug?extid=3Daac7bff85be224= de5156 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=3D1384077858= 0000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=3D178407785800= 00 > > Reported-by: syzbot+aac7bff85be224de5156@syzkaller.appspotmail.com > Fixes: c87c299776e4 ("btrfs: make buffered write to copy one page a time= ") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisec= tion >