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Wed, 06 Aug 2025 04:21:01 -0700 (PDT) Date: Wed, 06 Aug 2025 04:21:01 -0700 In-Reply-To: <68930511.050a0220.7f033.003a.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68933a9d.a70a0220.7865.0004.GAE@google.com> Subject: Re: [syzbot] [mm?] WARNING in follow_page_pte From: syzbot To: akpm@linux-foundation.org, david@redhat.com, dev.jain@arm.com, jgg@ziepe.ca, jhubbard@nvidia.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, peterx@redhat.com, syzkaller-bugs@googlegroups.com, ziy@nvidia.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 8C6471C0006 X-Stat-Signature: pt8am491ecsc5hzpd9fe8nnxk4sesnet X-Rspam-User: X-Rspamd-Server: rspam07 X-HE-Tag: 1754479262-652564 X-HE-Meta: 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 WnRtTSJ7 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 0QY39XpG iL1pJb1aP4mHVO5AdVAxfG9MCjpcm+ZnQU7M4PMcquxJWSX2sQITDX3u2/6GN4cqdA/9MXBmFPzifPdJlCHbZDcHGh0P88Cc1FJUIbKpdVqacqXo+2eoRjm/ltnY+/xASIEDezdpxW+47QWjBufwQQ== 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 cac1db8c3aad97d6ffb56ced8868d6cbbbd2bfbe Author: Dev Jain Date: Fri Jul 18 09:02:43 2025 +0000 mm: optimize mprotect() by PTE batching bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13c746a2580000 start commit: 7e161a991ea7 Merge tag 'i2c-for-6.17-rc1-part2' of git://g.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=102746a2580000 console output: https://syzkaller.appspot.com/x/log.txt?x=17c746a2580000 kernel config: https://syzkaller.appspot.com/x/.config?x=75e522434dc68cb9 dashboard link: https://syzkaller.appspot.com/bug?extid=57bcc752f0df8bb1365c syz repro: https://syzkaller.appspot.com/x/repro.syz?x=126e85bc580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=161a22f0580000 Reported-by: syzbot+57bcc752f0df8bb1365c@syzkaller.appspotmail.com Fixes: cac1db8c3aad ("mm: optimize mprotect() by PTE batching") For information about bisection process see: https://goo.gl/tpsmEJ#bisection