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Sun, 08 Jan 2023 22:58:44 -0800 (PST) Date: Sun, 08 Jan 2023 22:58:44 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000053159f05f1cf4cad@google.com> Subject: [syzbot] WARNING in mbind_range From: syzbot To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Rspamd-Queue-Id: 6302BC0006 X-Rspamd-Server: rspam01 X-Stat-Signature: dtc4e4mhwkim3ki6nrqyitdwsqxshbc8 X-HE-Tag: 1673247525-767925 X-HE-Meta: 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 pACLOzJS 2/pYwsxhAPpOzvYPysd35E9LEyvjL6OVcEi95msJptTjILMMZGhVQsGeOkTy8FTgyb20vapUVbpqRZ4AuyV/pp7aeYwuCumo/qxF6j7508WV4trUtvNWKn0cSGNW7XN5VkkpJ8gAIs6Xe4+eKfNY0LFyqDftdIkkcicWkhGWnivsFtmXJjTOoPFu9JoXUF8iV/HmbH2Y0+mtBMsJLVbzI55tBkF6F/0Ll0i6140Ip46bfWryRhePioalYtJbvGEoFqTy+v4Ey2AV/O3oLcCIEt/OHg2dwppYcIon3VSJgf06XBQM96J7gj3CKPl7TykDI42F18t+MJ4fKN6QplCDMoBXZwZpLlWjXiq5qHVLZjCmehfZu6JiE1x+TxL0nyZLcOk+iv7SYLJa2VyWf7CipMsFehAd2Qb6FhlqhjiDr4+qEcZSLeygX9Y8vUCIy6/Ue2cfLdn2dy33FQS9HlR/StWxb0BeasZq3amcj2KcSE8vDs85zj+WKDnYrzHXqSE0hFg/QcLGvw3yYBEVHE/PT4jGBbgO0vYJ0tg/b9WxtaAQpcrC46NJix9//q84/I9g8+7xbfDF6xWEP9mm0+4fQaAsBUqglHo25K4s6t6ndoRVDTXl0mCYNvKJwrrXUZK9Ed87JKxYfe93CQWYPB4yPq+3Ifw== 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: Hello, syzbot found the following issue on: HEAD commit: 543b9b2fe10b Add linux-next specific files for 20230109 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1609b0ce480000 kernel config: https://syzkaller.appspot.com/x/.config?x=ceb6f70a080e19c3 dashboard link: https://syzkaller.appspot.com/bug?extid=502859d610c661e56545 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/22f2428ec2eb/disk-543b9b2f.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6003c7af47cc/vmlinux-543b9b2f.xz kernel image: https://storage.googleapis.com/syzbot-assets/ac9a6ad60347/bzImage-543b9b2f.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+502859d610c661e56545@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 30709 at mm/mempolicy.c:797 mbind_range+0x5d2/0x760 mm/mempolicy.c:797 Modules linked in: CPU: 0 PID: 30709 Comm: syz-executor.3 Not tainted 6.2.0-rc3-next-20230109-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:mbind_range+0x5d2/0x760 mm/mempolicy.c:797 Code: 96 e8 f2 c7 b4 ff 4d 85 e4 74 8c e8 e8 c7 b4 ff 4c 89 e7 e8 10 7d ff ff e9 7a ff ff ff 45 31 f6 e9 72 ff ff ff e8 ce c7 b4 ff <0f> 0b 45 31 f6 e9 63 ff ff ff e8 bf ae 02 00 e9 6d fc ff ff 4c 89 RSP: 0018:ffffc90003ac7ca8 EFLAGS: 00010216 RAX: 000000000000022c RBX: ffff888075406c00 RCX: ffffc900146ed000 RDX: 0000000000040000 RSI: ffffffff81cce582 RDI: ffffc90003ac7d20 RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000020c12000 R13: 0000000000000000 R14: 0000000020012000 R15: 0000000000000000 FS: 00007f0dd0398700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020319000 CR3: 00000000485d1000 CR4: 00000000003506e0 Call Trace: do_mbind mm/mempolicy.c:1320 [inline] kernel_mbind+0x473/0x7c0 mm/mempolicy.c:1474 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0dcf68c0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0dd0398168 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed RAX: ffffffffffffffda RBX: 00007f0dcf7abf80 RCX: 00007f0dcf68c0c9 RDX: 0000000000000000 RSI: 0000000000c00000 RDI: 0000000020012000 RBP: 00007f0dcf6e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdc142a6cf R14: 00007f0dd0398300 R15: 0000000000022000 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.