divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 19233 Comm: syz-executor.5 Not tainted 6.2.0-syzkaller-13277-g2eb29d59ddf0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 RIP: 0010:flush_commit_list+0xcef/0x1bf0 fs/reiserfs/journal.c:1068 Code: df 42 0f b6 04 28 84 c0 0f 85 45 02 00 00 48 89 e8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 51 02 00 00 41 8b 0f 48 89 d8 31 d2 <48> f7 f1 48 89 d3 49 83 c6 18 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 RSP: 0018:ffffc9000fa57460 EFLAGS: 00010246 RAX: 00000000000000ad RBX: 00000000000000ad RCX: 0000000000000000 RDX: 0000000000000000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffff888083f1f017 R08: dffffc0000000000 R09: ffffed10052b0704 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888035074000 R15: ffff888083f1f014 FS: 00007f32997db700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020200000 CR3: 000000007a598000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> flush_journal_list+0x2a8/0x1c70 fs/reiserfs/journal.c:1391 flush_used_journal_lists+0x1256/0x15d0 fs/reiserfs/journal.c:1829 do_journal_end+0x39f7/0x4770 do_journal_begin_r+0x970/0x1020 journal_begin+0x14c/0x360 fs/reiserfs/journal.c:3255 __commit_trans_jl fs/reiserfs/journal.c:3866 [inline] reiserfs_commit_for_inode+0x736/0xbe0 fs/reiserfs/journal.c:3922 reiserfs_dir_fsync+0xcb/0x100 fs/reiserfs/dir.c:43 vfs_fsync_range fs/sync.c:188 [inline] vfs_fsync fs/sync.c:202 [inline] do_fsync fs/sync.c:212 [inline] __do_sys_fdatasync fs/sync.c:225 [inline] __se_sys_fdatasync fs/sync.c:223 [inline] __x64_sys_fdatasync+0xb5/0x110 fs/sync.c:223 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f3298a8c0f9 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:00007f32997db168 EFLAGS: 00000246 ORIG_RAX: 000000000000004b RAX: ffffffffffffffda RBX: 00007f3298babf80 RCX: 00007f3298a8c0f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f3298ae7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc12b6abff R14: 00007f32997db300 R15: 0000000000022000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:flush_commit_list+0xcef/0x1bf0 fs/reiserfs/journal.c:1068 Code: df 42 0f b6 04 28 84 c0 0f 85 45 02 00 00 48 89 e8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 51 02 00 00 41 8b 0f 48 89 d8 31 d2 <48> f7 f1 48 89 d3 49 83 c6 18 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 RSP: 0018:ffffc9000fa57460 EFLAGS: 00010246 RAX: 00000000000000ad RBX: 00000000000000ad RCX: 0000000000000000 RDX: 0000000000000000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffff888083f1f017 R08: dffffc0000000000 R09: ffffed10052b0704 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888035074000 R15: ffff888083f1f014 FS: 00007f32997db700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffaf53d3fc0 CR3: 000000007a598000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: df 42 0f filds 0xf(%rdx) 3: b6 04 mov $0x4,%dh 5: 28 84 c0 0f 85 45 02 sub %al,0x245850f(%rax,%rax,8) c: 00 00 add %al,(%rax) e: 48 89 e8 mov %rbp,%rax 11: 48 c1 e8 03 shr $0x3,%rax 15: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax 1a: 84 c0 test %al,%al 1c: 0f 85 51 02 00 00 jne 0x273 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: 49 83 c6 18 add $0x18,%r14 34: 4c 89 f0 mov %r14,%rax 37: 48 c1 e8 03 shr $0x3,%rax 3b: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)