divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5045 Comm: syz-executor.2 Not tainted 6.4.0-rc7-syzkaller-00041-ge660abd551f1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:do_journal_end+0x129e/0x4770 fs/reiserfs/journal.c:4089 Code: 28 84 c0 0f 85 00 2f 00 00 4d 8d 64 1c 01 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 07 2f 00 00 41 8b 0f 4c 89 e0 31 d2 <48> f7 f1 48 89 d3 48 03 5c 24 20 48 8b 84 24 d8 00 00 00 42 80 3c RSP: 0018:ffffc9000440f840 EFLAGS: 00010246 RAX: 0000000000000003 RBX: 0000000000000002 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807696e000 RBP: ffffc9000440fab0 R08: dffffc0000000000 R09: 0000000000000000 R10: ffff88807696e000 R11: dffffc0000000001 R12: 0000000000000003 R13: dffffc0000000000 R14: ffff8880a63a4017 R15: ffff8880a63a4014 FS: 0000555555649400(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdf7b58dd8 CR3: 0000000086a74000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_journal_release+0x47c/0x4d0 fs/reiserfs/journal.c:1940 journal_release+0x1f/0x30 fs/reiserfs/journal.c:1971 reiserfs_put_super+0x23b/0x4c0 fs/reiserfs/super.c:616 generic_shutdown_super+0x134/0x340 fs/super.c:500 kill_block_super+0x84/0xf0 fs/super.c:1407 deactivate_locked_super+0xa4/0x110 fs/super.c:331 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f8c5f88d7f7 Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 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 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdf7b59518 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8c5f88d7f7 RDX: 00007ffdf7b595ec RSI: 000000000000000a RDI: 00007ffdf7b595e0 RBP: 00007ffdf7b595e0 R08: 00000000ffffffff R09: 00007ffdf7b593b0 R10: 000055555564a893 R11: 0000000000000246 R12: 00007f8c5f8d643b R13: 00007ffdf7b5a6a0 R14: 000055555564a810 R15: 00007ffdf7b5a6e0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_journal_end+0x129e/0x4770 fs/reiserfs/journal.c:4089 Code: 28 84 c0 0f 85 00 2f 00 00 4d 8d 64 1c 01 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 07 2f 00 00 41 8b 0f 4c 89 e0 31 d2 <48> f7 f1 48 89 d3 48 03 5c 24 20 48 8b 84 24 d8 00 00 00 42 80 3c RSP: 0018:ffffc9000440f840 EFLAGS: 00010246 RAX: 0000000000000003 RBX: 0000000000000002 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807696e000 RBP: ffffc9000440fab0 R08: dffffc0000000000 R09: 0000000000000000 R10: ffff88807696e000 R11: dffffc0000000001 R12: 0000000000000003 R13: dffffc0000000000 R14: ffff8880a63a4017 R15: ffff8880a63a4014 FS: 0000555555649400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdb76fc8000 CR3: 0000000086a74000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 28 84 c0 0f 85 00 2f sub %al,0x2f00850f(%rax,%rax,8) 7: 00 00 add %al,(%rax) 9: 4d 8d 64 1c 01 lea 0x1(%r12,%rbx,1),%r12 e: 4c 89 f0 mov %r14,%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 07 2f 00 00 jne 0x2f29 22: 41 8b 0f mov (%r15),%ecx 25: 4c 89 e0 mov %r12,%rax 28: 31 d2 xor %edx,%edx * 2a: 48 f7 f1 div %rcx <-- trapping instruction 2d: 48 89 d3 mov %rdx,%rbx 30: 48 03 5c 24 20 add 0x20(%rsp),%rbx 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