REISERFS warning: reiserfs-5090 is_tree_node: node level 0 does not match to the expected one -1
REISERFS error (device loop0): vs-5150 search_by_key: invalid format found in block 0. Fsck?
REISERFS (device loop0): Remounting filesystem read-only
divide error: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5888 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:do_journal_end+0x136a/0x4890 fs/reiserfs/journal.c:4096
Code: 0f b6 04 20 84 c0 0f 85 45 30 00 00 49 8d 44 1d 01 4c 89 f1 48 c1 e9 03 42 0f b6 0c 21 84 c9 0f 85 4c 30 00 00 41 8b 0f 31 d2 <48> f7 f1 49 89 d6 4c 03 74 24 08 48 8b 84 24 d8 00 00 00 42 80 3c
RSP: 0018:ffffc900032a7700 EFLAGS: 00010246
RAX: 0000000000000003 RBX: 0000000000000002 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8adcd900 RDI: ffff88807ea73ff4
RBP: ffffc900032a7970 R08: 424c724573496552 R09: 424c724573496552
R10: dffffc0000000000 R11: ffffed100fd4e800 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff88805d8d2017 R15: ffff88805d8d2014
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000207a70f73c08 CR3: 0000000023f9b000 CR4: 00000000003506f0
Call Trace:
<TASK>
do_journal_release+0x49b/0x4f0 fs/reiserfs/journal.c:1940
journal_release+0x1f/0x30 fs/reiserfs/journal.c:1971
reiserfs_put_super+0x26b/0x510 fs/reiserfs/super.c:616
generic_shutdown_super+0x134/0x2b0 fs/super.c:693
kill_block_super+0x44/0x90 fs/super.c:1660
deactivate_locked_super+0x97/0x100 fs/super.c:481
cleanup_mnt+0x43b/0x4d0 fs/namespace.c:1259
task_work_run+0x1d4/0x260 kernel/task_work.c:245
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0x95a/0x2460 kernel/exit.c:884
do_group_exit+0x21b/0x2d0 kernel/exit.c:1026
__do_sys_exit_group kernel/exit.c:1037 [inline]
__se_sys_exit_group kernel/exit.c:1035 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1035
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1c3499ce59
Code: Unable to access opcode bytes at 0x7f1c3499ce2f.
RSP: 002b:00007ffef144d098 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f1c34a3223c RCX: 00007f1c3499ce59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000010 R08: 0000000000000000 R09: 00007f1c34a321ca
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffef144e350
R13: 00007f1c34a321ca R14: 0000555571a604e8 R15: 00007ffef144f420
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_journal_end+0x136a/0x4890 fs/reiserfs/journal.c:4096
Code: 0f b6 04 20 84 c0 0f 85 45 30 00 00 49 8d 44 1d 01 4c 89 f1 48 c1 e9 03 42 0f b6 0c 21 84 c9 0f 85 4c 30 00 00 41 8b 0f 31 d2 <48> f7 f1 49 89 d6 4c 03 74 24 08 48 8b 84 24 d8 00 00 00 42 80 3c
RSP: 0018:ffffc900032a7700 EFLAGS: 00010246
RAX: 0000000000000003 RBX: 0000000000000002 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8adcd900 RDI: ffff88807ea73ff4
RBP: ffffc900032a7970 R08: 424c724573496552 R09: 424c724573496552
R10: dffffc0000000000 R11: ffffed100fd4e800 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff88805d8d2017 R15: ffff88805d8d2014
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7544408000 CR3: 000000000cf32000 CR4: 00000000003506e0
----------------
Code disassembly (best guess):
0: 0f b6 04 20 movzbl (%rax,%riz,1),%eax
4: 84 c0 test %al,%al
6: 0f 85 45 30 00 00 jne 0x3051
c: 49 8d 44 1d 01 lea 0x1(%r13,%rbx,1),%rax
11: 4c 89 f1 mov %r14,%rcx
14: 48 c1 e9 03 shr $0x3,%rcx
18: 42 0f b6 0c 21 movzbl (%rcx,%r12,1),%ecx
1d: 84 c9 test %cl,%cl
1f: 0f 85 4c 30 00 00 jne 0x3071
25: 41 8b 0f mov (%r15),%ecx
28: 31 d2 xor %edx,%edx
* 2a: 48 f7 f1 div %rcx <-- trapping instruction
2d: 49 89 d6 mov %rdx,%r14
30: 4c 03 74 24 08 add 0x8(%rsp),%r14
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