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Fri, 16 Aug 2024 17:08:04 -0700 (PDT) Date: Fri, 16 Aug 2024 17:08:04 -0700 In-Reply-To: <00000000000012a63d061fccab65@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b28361061fd5de24@google.com> Subject: Re: [syzbot] [jfs?] KASAN: slab-use-after-free Read in dbFreeBits From: syzbot To: akpm@linux-foundation.org, axboe@kernel.dk, eadavis@qq.com, jfs-discussion@lists.sourceforge.net, kristian@klausen.dk, linux-kernel@vger.kernel.org, linux-mm@kvack.org, shaggy@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 048DF140003 X-Stat-Signature: 1ph41akmef5n1owx6iat9zof6mr7bu95 X-Rspam-User: X-HE-Tag: 1723853285-415548 X-HE-Meta: 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 NfGcvWQI 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 zQj9c2fm Q1HAvyTp4MaFj4na4z9yiJntWbTiRhco3drB+29oZFphptVTnJ2/ZR4S66aXDrUe X-Bogosity: Ham, tests=bogofilter, spamicity=0.000838, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: syzbot has bisected this issue to: commit 2b9ac22b12a266eb4fec246a07b504dd4983b16b Author: Kristian Klausen Date: Fri Jun 18 11:51:57 2021 +0000 loop: Fix missing discard support when using LOOP_CONFIGURE bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16f44605980000 start commit: d7a5aa4b3c00 Merge tag 'perf-tools-fixes-for-v6.11-2024-08.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=15f44605980000 console output: https://syzkaller.appspot.com/x/log.txt?x=11f44605980000 kernel config: https://syzkaller.appspot.com/x/.config?x=92c0312151c4e32e dashboard link: https://syzkaller.appspot.com/bug?extid=3c010e21296f33a5dc16 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=139469f5980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=100f7713980000 Reported-by: syzbot+3c010e21296f33a5dc16@syzkaller.appspotmail.com Fixes: 2b9ac22b12a2 ("loop: Fix missing discard support when using LOOP_CONFIGURE") For information about bisection process see: https://goo.gl/tpsmEJ#bisection