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Sun, 29 Sep 2024 17:02:02 -0700 (PDT) Date: Sun, 29 Sep 2024 17:02:02 -0700 In-Reply-To: <000000000000341f5f061d8d6bcb@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <66f9ea7a.050a0220.aab67.0023.GAE@google.com> Subject: Re: [syzbot] [mm?] BUG: Bad page map (8) From: syzbot To: Liam.Howlett@Oracle.com, Liam.Howlett@oracle.com, akpm@linux-foundation.org, david@redhat.com, hdanton@sina.com, hughd@google.com, liam.howlett@oracle.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, syzkaller-bugs@googlegroups.com, vbabka@suse.cz, vivek.kasireddy@intel.com, willy@infradead.org Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Rspamd-Queue-Id: 1D9F91C000E X-Rspamd-Server: rspam01 X-Stat-Signature: bi6aedh7cycedpj3bthidixwwcxe6gbk X-HE-Tag: 1727654522-190397 X-HE-Meta: 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 iwIzQyU/ 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 kzyrct4w 8Bjm4DGgfTNqp40BXWJNJOdsZ556eT02F75epDrBvpEfrMH7WFgaIjhkX6d4Dfl6kxIjPreFNHNMwZRGXndZ9+10owttwgZ1ZDY+dEyIA1c6lzYkIbCKWg== 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 f8d112a4e657c65c888e6b8a8435ef61a66e4ab8 Author: Liam R. Howlett Date: Fri Aug 30 04:00:54 2024 +0000 mm/mmap: avoid zeroing vma tree in mmap_region() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13a44127980000 start commit: 3efc57369a0c Merge tag 'for-linus' of git://git.kernel.org.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=10644127980000 console output: https://syzkaller.appspot.com/x/log.txt?x=17a44127980000 kernel config: https://syzkaller.appspot.com/x/.config?x=a4fcb065287cdb84 dashboard link: https://syzkaller.appspot.com/bug?extid=ec4b7d82bb051330f15a syz repro: https://syzkaller.appspot.com/x/repro.syz?x=113acd9f980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14cc0127980000 Reported-by: syzbot+ec4b7d82bb051330f15a@syzkaller.appspotmail.com Fixes: f8d112a4e657 ("mm/mmap: avoid zeroing vma tree in mmap_region()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection