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Tue, 9 Sep 2025 10:59:43 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id JgobJJ8IwGgLLAAAD6G6ig (envelope-from ); Tue, 09 Sep 2025 10:59:43 +0000 Received: by quack3.suse.cz (Postfix, from userid 1000) id DE065A0A2D; Tue, 9 Sep 2025 12:59:38 +0200 (CEST) Date: Tue, 9 Sep 2025 12:59:38 +0200 From: Jan Kara To: syzbot Cc: adilger.kernel@dilger.ca, akpm@linux-foundation.org, apopple@nvidia.com, byungchul@sk.com, david@redhat.com, gourry@gourry.net, jack@suse.cz, joshua.hahnjy@gmail.com, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, matthew.brost@intel.com, rakie.kim@sk.com, syzkaller-bugs@googlegroups.com, tytso@mit.edu, ying.huang@linux.alibaba.com, ziy@nvidia.com Subject: Re: [syzbot] [mm?] [ext4?] WARNING in ext4_init_orphan_info Message-ID: References: <68bf244a.050a0220.192772.0883.GAE@google.com> <68bf33e3.a70a0220.7a912.02c3.GAE@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <68bf33e3.a70a0220.7a912.02c3.GAE@google.com> X-Rspamd-Action: no action X-Stat-Signature: gbgtz3b5ytph1iyqrbpscqc6aiyk4yw9 X-Rspam-User: X-Rspamd-Queue-Id: 873BF2000B X-Rspamd-Server: rspam04 X-HE-Tag: 1757415585-198862 X-HE-Meta: U2FsdGVkX1+0Tvf/R/pU1ZzDtfW5Fw9+agbO1NsQYtGkr4IFVMkU/pfu0g7m07xNJT2K4feE82R+glSlc+7rYbCaOls7c8F8mBTutSrZ3+tm7A4XbHoWQm9ulePRD4xZlxUt1xFtR5obMMC6KyQjcN53ydue4puKevf6O03M/2ONhRI4VKY2TOuuBi6bK8NMCIQWzx8Je8dr3d7fwR3+ao7QrYHd5bVPrnQLLMIiY6albwDT/ofY/3S7BrFJJUYzfGbt0IO1ofx7gtiRHZfVKgFUITj8pEAyo8raNW9XGFiYC7fcA6ogK43kLY8rhz009F82hJDfPzRN+q4i9gsSXuOLly8/wOJud+nH9xK9k4FE9TIaw8IrYLm+AoBMY+ICpaGO/nECpkdDVDRKoE9humHdJJ6gb5v5bSKEpmace+GhQjl/XvJY31/VQ30W5XxsQwnj8jlKwN/KBPFO5shI3I08dRdK/xtolFfeOJ5tH7qY3AaP+8Aw5+z+Xd2zdEIyauXMW8XjJ3hZEwlCeTAZQ4pD8qvMn4/+MEU4ghdiwqIOQXr0lR/NjNhHScrLKh1Sl76Db7SC8z3sGjdpsepYBXKV7l9koAw/XgVC5NJtxEG/cQxuP45qIiQKRPbRhTANG7cb0TFOmDgCQgNrhZ+XNnVSwHkX3js3cFk0inLCewtcs2WdFWm/hUkTNTJCU81sPSUZCgeCd+dpK8lXYZgey6nMlB4peXHTVT4kzFxstErF1tlqmy2esX4bxF/ECeHHodx0DkO3MtYyUFcuCxpkfJPpFIIO3Dm42Q7Xso5KIOAy8txfogXFFGksABBIA4RKV5KwtTZDIYLKFHZq+BEZzInNuZGVksp1V4S/l7CaL8aLz5oUi7Es9tAxKMRO2tEcPbrQJDzcNegkz/lDlplUbCJLFBcgJRiRo2oRDEtnQQJxQgcGrMfqSxCesZcEzFnNKBdOL7Wuf4+E7DS+4Eo mj24MKtl 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 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: List-Subscribe: List-Unsubscribe: On Mon 08-09-25 12:52:03, syzbot wrote: > syzbot has bisected this issue to: > > commit 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 > Author: Jan Kara > Date: Mon Aug 16 09:57:06 2021 +0000 > > ext4: Speedup ext4 orphan inode handling > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16645562580000 > start commit: 76eeb9b8de98 Linux 6.17-rc5 > git tree: upstream > final oops: https://syzkaller.appspot.com/x/report.txt?x=15645562580000 > console output: https://syzkaller.appspot.com/x/log.txt?x=11645562580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=429771c55b615e85 > dashboard link: https://syzkaller.appspot.com/bug?extid=0b92850d68d9b12934f5 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=168d2562580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15869562580000 > > Reported-by: syzbot+0b92850d68d9b12934f5@syzkaller.appspotmail.com > Fixes: 02f310fcf47f ("ext4: Speedup ext4 orphan inode handling") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection Hum, yes, we don't verify orphan file size is sane. I'll send a fix. Honza -- Jan Kara SUSE Labs, CR