divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5112 Comm: syz-executor.4 Not tainted 6.7.0-rc2-syzkaller-00014-gc2d5304e6c64 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:do_journal_end+0x1734/0x4f30 fs/reiserfs/journal.c:4090 Code: c6 41 84 f0 0f 85 8f 37 00 00 83 e2 07 38 d1 40 0f 9e c6 84 c9 0f 95 c2 40 84 d6 0f 85 78 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:ffffc900043c7a18 EFLAGS: 00010246 RAX: 0000000000000003 RBX: ffff88815768f000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a2db7018 RBP: ffff8880a2db7000 R08: 0000000000000001 R09: 424c724573496552 R10: ffff88815d248000 R11: 0000000000000003 R12: 0000000000000000 R13: 0000000000001000 R14: ffffc900043c7c10 R15: ffff88805d466570 FS: 0000555557104480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcbc4c1d28 CR3: 000000003d2fb000 CR4: 0000000000350ef0 Call Trace: do_journal_release fs/reiserfs/journal.c:1939 [inline] journal_release+0x42d/0x500 fs/reiserfs/journal.c:1970 reiserfs_put_super+0xe9/0x5c0 fs/reiserfs/super.c:616 generic_shutdown_super+0x161/0x3d0 fs/super.c:696 kill_block_super+0x3b/0x90 fs/super.c:1667 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+0x14d/0x240 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x217/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:296 do_syscall_64+0x4d/0x110 arch/x86/entry/common.c:88 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f20b687de17 Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffcbc4c24d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f20b687de17 RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffcbc4c2590 RBP: 00007ffcbc4c2590 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcbc4c3650 R13: 00007f20b68c73b9 R14: 000000000010d44a R15: 0000000000000018 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_journal_end+0x1734/0x4f30 fs/reiserfs/journal.c:4090 Code: c6 41 84 f0 0f 85 8f 37 00 00 83 e2 07 38 d1 40 0f 9e c6 84 c9 0f 95 c2 40 84 d6 0f 85 78 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:ffffc900043c7a18 EFLAGS: 00010246 RAX: 0000000000000003 RBX: ffff88815768f000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a2db7018 RBP: ffff8880a2db7000 R08: 0000000000000001 R09: 424c724573496552 R10: ffff88815d248000 R11: 0000000000000003 R12: 0000000000000000 R13: 0000000000001000 R14: ffffc900043c7c10 R15: ffff88805d466570 FS: 0000555557104480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcbc4c1d28 CR3: 000000003d2fb000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: c6 41 84 f0 movb $0xf0,-0x7c(%rcx) 4: 0f 85 8f 37 00 00 jne 0x3799 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 78 37 00 00 jne 0x3799 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