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X-Google-Smtp-Source: AMrXdXvWo6Jjph4XKqRf9eDjvXjXYmVjYUVSlwIMbuk9cCLdVCfj43PdykuVI4+55MVjJzZ/mQHnTu3q8qnwZ2bezgNNSnQSBlRy MIME-Version: 1.0 X-Received: by 2002:a92:ab09:0:b0:30c:7ef:b9fa with SMTP id v9-20020a92ab09000000b0030c07efb9famr5612315ilh.52.1673273739711; Mon, 09 Jan 2023 06:15:39 -0800 (PST) Date: Mon, 09 Jan 2023 06:15:39 -0800 In-Reply-To: <00000000000053159f05f1cf4cad@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000de1c8f05f1d566d0@google.com> Subject: Re: [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-Rspamd-Queue-Id: 8913540004 X-Stat-Signature: cukhdrpynkican5abg6i7djtzthdb4fg X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1673273740-473227 X-HE-Meta: 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 03Mj3wNV 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https://syzkaller.appspot.com/x/log.txt?x=12978216480000 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 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=117fcc02480000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1396d7d6480000 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: 0 PID: 5072 at mm/mempolicy.c:797 mbind_range+0x5d2/0x760 mm/mempolicy.c:797 Modules linked in: CPU: 0 PID: 5072 Comm: syz-executor326 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:ffffc90003c9fca8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88807aa0ec00 RCX: 0000000000000000 RDX: ffff888022cad7c0 RSI: ffffffff81cce582 RDI: ffffc90003c9fd20 RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000020c12000 R13: 0000000000000000 R14: 0000000020012000 R15: 0000000000000000 FS: 00005555556a1300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fba95ca5fb8 CR3: 0000000026945000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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: 0033:0x7fba95c5eae9 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe65f13508 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fba95c5eae9 RDX: 0000000000000000 RSI: 0000000000c00000 RDI: 0000000020012000 RBP: 00007fba95c22c90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fba95c22d20 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000