divide error: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4346 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:do_journal_end+0x11eb/0x42d0 fs/reiserfs/journal.c:4089
Code: df 0f b6 04 28 84 c0 0f 85 44 2c 00 00 49 8d 44 1d 01 4c 89 f1 48 c1 e9 03 0f b6 0c 29 84 c9 0f 85 4c 2c 00 00 41 8b 0f 31 d2 <48> f7 f1 49 89 d6 4d 01 e6 48 8b 84 24 b8 00 00 00 80 3c 28 00 4c
RSP: 0018:ffffc9000303f650 EFLAGS: 00010246
RAX: 0000000000000003 RBX: 0000000000000002 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880253eb000
RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffff8880253ea000
R10: 0000000000000000 R11: 0000000000000200 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88806acb8017 R15: ffff88806acb8014
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa0725bf000 CR3: 0000000023207000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 reiserfs_sync_fs+0xcc/0x150 fs/reiserfs/super.c:78
 sync_filesystem+0xe6/0x220 fs/sync.c:56
 generic_shutdown_super+0x6b/0x300 fs/super.c:448
 kill_block_super+0x7c/0xe0 fs/super.c:1427
 deactivate_locked_super+0x93/0xf0 fs/super.c:335
 cleanup_mnt+0x418/0x4d0 fs/namespace.c:1148
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0x61e/0x20a0 kernel/exit.c:883
 do_group_exit+0x12e/0x300 kernel/exit.c:997
 get_signal+0x6ca/0x12c0 kernel/signal.c:2900
 arch_do_signal_or_restart+0xc1/0x1300 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9ee10191ff
Code: Unable to access opcode bytes at RIP 0x7f9ee10191d5.
RSP: 002b:00007ffd9a8b7130 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: 0000000000000004 RBX: 0000000000000003 RCX: 00007f9ee10191ff
RDX: 0000000000000004 RSI: 00007ffd9a8b71f0 RDI: 00000000000000f8
RBP: 00007ffd9a8b719c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000012f7f R15: 00007ffd9a8b71f0
 </TASK>
Modules linked in:
---[ end trace 6cc290555bc129e3 ]---
RIP: 0010:do_journal_end+0x11eb/0x42d0 fs/reiserfs/journal.c:4089
Code: df 0f b6 04 28 84 c0 0f 85 44 2c 00 00 49 8d 44 1d 01 4c 89 f1 48 c1 e9 03 0f b6 0c 29 84 c9 0f 85 4c 2c 00 00 41 8b 0f 31 d2 <48> f7 f1 49 89 d6 4d 01 e6 48 8b 84 24 b8 00 00 00 80 3c 28 00 4c
RSP: 0018:ffffc9000303f650 EFLAGS: 00010246
RAX: 0000000000000003 RBX: 0000000000000002 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880253eb000
RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffff8880253ea000
R10: 0000000000000000 R11: 0000000000000200 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88806acb8017 R15: ffff88806acb8014
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f714b51fa10 CR3: 000000007994a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	df 0f                	fisttps (%rdi)
   2:	b6 04                	mov    $0x4,%dh
   4:	28 84 c0 0f 85 44 2c 	sub    %al,0x2c44850f(%rax,%rax,8)
   b:	00 00                	add    %al,(%rax)
   d:	49 8d 44 1d 01       	lea    0x1(%r13,%rbx,1),%rax
  12:	4c 89 f1             	mov    %r14,%rcx
  15:	48 c1 e9 03          	shr    $0x3,%rcx
  19:	0f b6 0c 29          	movzbl (%rcx,%rbp,1),%ecx
  1d:	84 c9                	test   %cl,%cl
  1f:	0f 85 4c 2c 00 00    	jne    0x2c71
  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:	4d 01 e6             	add    %r12,%r14
  33:	48 8b 84 24 b8 00 00 	mov    0xb8(%rsp),%rax
  3a:	00
  3b:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
  3f:	4c                   	rex.WR