divide error: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5059 Comm: syz-executor724 Not tainted 6.6.0-rc6-next-20231019-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:do_journal_end+0x1731/0x4f20 fs/reiserfs/journal.c:4090
Code: c6 41 84 f0 0f 85 87 37 00 00 83 e2 07 38 d1 40 0f 9e c6 84 c9 0f 95 c2 40 84 d6 0f 85 70 37 00 00 8b 4b 14 48 8d 7d 18 31 d2 <48> f7 f1 4a 8d 34 22 48 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1
RSP: 0018:ffffc9000418f9f8 EFLAGS: 00010246
RAX: 0000000000000003 RBX: ffff888075ba0000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888019bb5018
RBP: ffff888019bb5000 R08: 0000000000000001 R09: 424c724573496552
R10: ffff888018b8c000 R11: 0000000000000003 R12: 0000000000000000
R13: 0000000000001000 R14: ffffc9000418fbe8 R15: ffff888077a17910
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020400000 CR3: 00000000766fc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 reiserfs_sync_fs+0x10e/0x140 fs/reiserfs/super.c:78
 sync_filesystem fs/sync.c:56 [inline]
 sync_filesystem+0x109/0x280 fs/sync.c:30
 generic_shutdown_super+0x7e/0x3c0 fs/super.c:669
 kill_block_super+0x3b/0x90 fs/super.c:1652
 deactivate_locked_super+0xbc/0x1a0 fs/super.c:484
 deactivate_super+0xde/0x100 fs/super.c:517
 cleanup_mnt+0x222/0x450 fs/namespace.c:1256
 task_work_run+0x14c/0x240 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa85/0x2ac0 kernel/exit.c:871
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1021
 __do_sys_exit_group kernel/exit.c:1032 [inline]
 __se_sys_exit_group kernel/exit.c:1030 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1030
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f4c07c8f109
Code: Unable to access opcode bytes at 0x7f4c07c8f0df.
RSP: 002b:00007ffe5bb206a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f4c07c8f109
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 00007f4c07d192d0 R08: ffffffffffffffb0 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4c07d192d0
R13: 0000000000000000 R14: 00007f4c07d1a140 R15: 00007f4c07c5a220
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_journal_end+0x1731/0x4f20 fs/reiserfs/journal.c:4090
Code: c6 41 84 f0 0f 85 87 37 00 00 83 e2 07 38 d1 40 0f 9e c6 84 c9 0f 95 c2 40 84 d6 0f 85 70 37 00 00 8b 4b 14 48 8d 7d 18 31 d2 <48> f7 f1 4a 8d 34 22 48 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1
RSP: 0018:ffffc9000418f9f8 EFLAGS: 00010246
RAX: 0000000000000003 RBX: ffff888075ba0000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888019bb5018
RBP: ffff888019bb5000 R08: 0000000000000001 R09: 424c724573496552
R10: ffff888018b8c000 R11: 0000000000000003 R12: 0000000000000000
R13: 0000000000001000 R14: ffffc9000418fbe8 R15: ffff888077a17910
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e062887088 CR3: 000000000c977000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c6 41 84 f0          	movb   $0xf0,-0x7c(%rcx)
   4:	0f 85 87 37 00 00    	jne    0x3791
   a:	83 e2 07             	and    $0x7,%edx
   d:	38 d1                	cmp    %dl,%cl
   f:	40 0f 9e c6          	setle  %sil
  13:	84 c9                	test   %cl,%cl
  15:	0f 95 c2             	setne  %dl
  18:	40 84 d6             	test   %dl,%sil
  1b:	0f 85 70 37 00 00    	jne    0x3791
  21:	8b 4b 14             	mov    0x14(%rbx),%ecx
  24:	48 8d 7d 18          	lea    0x18(%rbp),%rdi
  28:	31 d2                	xor    %edx,%edx
* 2a:	48 f7 f1             	div    %rcx <-- trapping instruction
  2d:	4a 8d 34 22          	lea    (%rdx,%r12,1),%rsi
  31:	48 89 fa             	mov    %rdi,%rdx
  34:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  3b:	fc ff df
  3e:	48                   	rex.W
  3f:	c1                   	.byte 0xc1