Hello, syzbot found the following issue on: HEAD commit: f9ff5644bcc0 Merge tag 'hsi-for-6.2' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13ee69e7880000 kernel config: https://syzkaller.appspot.com/x/.config?x=c163713cf9186fe7 dashboard link: https://syzkaller.appspot.com/bug?extid=74b838cfa47fc9554471 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, 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/95eb66f6b569/disk-f9ff5644.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/fb05e1a5a9de/vmlinux-f9ff5644.xz kernel image: https://storage.googleapis.com/syzbot-assets/e2f1f698973a/bzImage-f9ff5644.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+74b838cfa47fc9554471@xxxxxxxxxxxxxxxxxxxxxxxxx divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8065 Comm: syz-executor.4 Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:do_journal_end+0x1822/0x4a30 fs/reiserfs/journal.c:4091 Code: 04 28 84 c0 0f 85 f7 2b 00 00 4a 8d 5c 33 01 4c 89 e0 48 c1 e8 03 42 8a 04 28 84 c0 0f 85 ff 2b 00 00 41 8b 0f 48 89 d8 31 d2 <48> f7 f1 48 89 d3 48 03 5c 24 20 48 8b 84 24 d8 00 00 00 42 80 3c RSP: 0018:ffffc90003c5fae0 EFLAGS: 00010246 RAX: 0000000000000003 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888026c42000 RBP: ffffc90003c5fd50 R08: dffffc0000000000 R09: ffff888026c42000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888037308017 R13: dffffc0000000000 R14: 0000000000000002 R15: ffff888037308014 FS: 00007f623dd00700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002012d000 CR3: 0000000018049000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> reiserfs_sync_fs+0xbb/0x130 fs/reiserfs/super.c:78 iterate_supers+0x137/0x1f0 fs/super.c:724 ksys_sync+0xc6/0x1c0 fs/sync.c:103 __do_sys_sync+0xa/0x10 fs/sync.c:113 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f623d08c0d9 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:00007f623dd00168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007f623d1abf80 RCX: 00007f623d08c0d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f623d0e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffa3f7577f R14: 00007f623dd00300 R15: 0000000000022000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_journal_end+0x1822/0x4a30 fs/reiserfs/journal.c:4091 Code: 04 28 84 c0 0f 85 f7 2b 00 00 4a 8d 5c 33 01 4c 89 e0 48 c1 e8 03 42 8a 04 28 84 c0 0f 85 ff 2b 00 00 41 8b 0f 48 89 d8 31 d2 <48> f7 f1 48 89 d3 48 03 5c 24 20 48 8b 84 24 d8 00 00 00 42 80 3c RSP: 0018:ffffc90003c5fae0 EFLAGS: 00010246 RAX: 0000000000000003 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888026c42000 RBP: ffffc90003c5fd50 R08: dffffc0000000000 R09: ffff888026c42000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888037308017 R13: dffffc0000000000 R14: 0000000000000002 R15: ffff888037308014 FS: 00007f623dd00700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000021000000 CR3: 0000000018049000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 04 28 add $0x28,%al 2: 84 c0 test %al,%al 4: 0f 85 f7 2b 00 00 jne 0x2c01 a: 4a 8d 5c 33 01 lea 0x1(%rbx,%r14,1),%rbx f: 4c 89 e0 mov %r12,%rax 12: 48 c1 e8 03 shr $0x3,%rax 16: 42 8a 04 28 mov (%rax,%r13,1),%al 1a: 84 c0 test %al,%al 1c: 0f 85 ff 2b 00 00 jne 0x2c21 22: 41 8b 0f mov (%r15),%ecx 25: 48 89 d8 mov %rbx,%rax 28: 31 d2 xor %edx,%edx * 2a: 48 f7 f1 div %rcx <-- trapping instruction 2d: 48 89 d3 mov %rdx,%rbx 30: 48 03 5c 24 20 add 0x20(%rsp),%rbx 35: 48 8b 84 24 d8 00 00 mov 0xd8(%rsp),%rax 3c: 00 3d: 42 rex.X 3e: 80 .byte 0x80 3f: 3c .byte 0x3c --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
