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Sun, 06 Apr 2025 16:09:02 -0700 (PDT) Date: Sun, 06 Apr 2025 16:09:02 -0700 In-Reply-To: <67392d6d.050a0220.e1c64.000a.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67f3098e.050a0220.0a13.0276.GAE@google.com> Subject: Re: [syzbot] [fs?] BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio (4) From: syzbot To: akpm@linux-foundation.org, andrii@kernel.org, ast@kernel.org, eddyz87@gmail.com, hdanton@sina.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, shakeel.butt@linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 76B1D20007 X-Stat-Signature: duaw3h1cudne3qcd7i4d1ynk9miaskhy X-Rspam-User: X-HE-Tag: 1743980943-774042 X-HE-Meta: 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 eKttKnLL 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 3xBh7ml4 elr+3ArEyVLsRcGIssRauvHWwwAF+YJEW1tIGqHYDOK03jRc/2kFmfq+cEl75saBTlmR2YMO80n/NRt1z2DrBDDaojERkQzO7YRnIyPPggvVKdFwy2ul+DE8jzo4pomHam/Wi+h9k5U= 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: syzbot has bisected this issue to: commit ad41251c290dfe3c01472c94d2439a59de23fe97 Author: Andrii Nakryiko Date: Thu Aug 29 17:42:28 2024 +0000 lib/buildid: implement sleepable build_id_parse() API bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1601923f980000 start commit: a2cc6ff5ec8f Merge tag 'firewire-updates-6.15' of git://gi.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=1501923f980000 console output: https://syzkaller.appspot.com/x/log.txt?x=1101923f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=6fe3b5e6a2cb1cc2 dashboard link: https://syzkaller.appspot.com/bug?extid=09b7d050e4806540153d syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15743998580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10143404580000 Reported-by: syzbot+09b7d050e4806540153d@syzkaller.appspotmail.com Fixes: ad41251c290d ("lib/buildid: implement sleepable build_id_parse() API") For information about bisection process see: https://goo.gl/tpsmEJ#bisection