REISERFS warning: reiserfs-5090 is_tree_node: node level 0 does not match to the expected one -1 REISERFS error (device loop2): vs-5150 search_by_key: invalid format found in block 0. Fsck? REISERFS (device loop2): Remounting filesystem read-only divide error: 0000 [#1] PREEMPT SMP CPU: 0 PID: 4440 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+0x5d6/0x1070 fs/reiserfs/journal.c:4096 Code: 48 8b 83 18 06 00 00 48 8b 48 08 48 8b 40 18 48 8b 78 18 8b 71 0c 8b 49 14 49 8b 44 24 40 49 8b 54 24 48 48 8d 44 10 01 31 d2 <48> f7 f1 48 01 d6 8b 53 18 b9 08 00 00 00 e8 87 ac f4 ff 49 89 c5 RSP: 0018:ffffc90001ef7c30 EFLAGS: 00010246 RAX: 0000000000000003 RBX: ffff88810f389000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881084c2100 RBP: 0000000000000001 R08: 0000018000000000 R09: 0000000000000000 R10: ffff88810b950000 R11: ffffffff88c193f0 R12: ffffc900023e9000 R13: ffff88810ea9db28 R14: ffff88810b950000 R15: ffffc90001ef7d20 FS: 0000000000000000(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8841108710 CR3: 0000000003c55000 CR4: 00000000003506f0 Call Trace: do_journal_release+0x1e5/0x200 fs/reiserfs/journal.c:1940 journal_release+0xb/0x10 fs/reiserfs/journal.c:1971 reiserfs_put_super+0xd5/0x1a0 fs/reiserfs/super.c:616 generic_shutdown_super+0x70/0x100 fs/super.c:693 kill_block_super+0x16/0x40 fs/super.c:1660 deactivate_locked_super+0x30/0x110 fs/super.c:481 cleanup_mnt+0x82/0x130 fs/namespace.c:1259 task_work_run+0x7e/0xa0 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0x2d6/0xa00 kernel/exit.c:883 do_group_exit+0x9e/0xa0 kernel/exit.c:1024 __do_sys_exit_group kernel/exit.c:1035 [inline] __se_sys_exit_group kernel/exit.c:1033 [inline] __x64_sys_exit_group+0x12/0x20 kernel/exit.c:1033 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f884038eba9 Code: Unable to access opcode bytes at 0x7f884038eb7f. RSP: 002b:00007fffcaa0cff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f8840411c77 RCX: 00007f884038eba9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000010 R08: 00007fffcaa0ad96 R09: 00007fffcaa0e2b0 R10: 000000000000000a R11: 0000000000000246 R12: 00007fffcaa0e2b0 R13: 00007f8840411c05 R14: 000055557cbc24a8 R15: 00007fffcaa0f380 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_journal_end+0x5d6/0x1070 fs/reiserfs/journal.c:4096 Code: 48 8b 83 18 06 00 00 48 8b 48 08 48 8b 40 18 48 8b 78 18 8b 71 0c 8b 49 14 49 8b 44 24 40 49 8b 54 24 48 48 8d 44 10 01 31 d2 <48> f7 f1 48 01 d6 8b 53 18 b9 08 00 00 00 e8 87 ac f4 ff 49 89 c5 RSP: 0018:ffffc90001ef7c30 EFLAGS: 00010246 RAX: 0000000000000003 RBX: ffff88810f389000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881084c2100 RBP: 0000000000000001 R08: 0000018000000000 R09: 0000000000000000 R10: ffff88810b950000 R11: ffffffff88c193f0 R12: ffffc900023e9000 R13: ffff88810ea9db28 R14: ffff88810b950000 R15: ffffc90001ef7d20 FS: 0000000000000000(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8841108710 CR3: 000000010be98000 CR4: 00000000003506f0 ---------------- Code disassembly (best guess): 0: 48 8b 83 18 06 00 00 mov 0x618(%rbx),%rax 7: 48 8b 48 08 mov 0x8(%rax),%rcx b: 48 8b 40 18 mov 0x18(%rax),%rax f: 48 8b 78 18 mov 0x18(%rax),%rdi 13: 8b 71 0c mov 0xc(%rcx),%esi 16: 8b 49 14 mov 0x14(%rcx),%ecx 19: 49 8b 44 24 40 mov 0x40(%r12),%rax 1e: 49 8b 54 24 48 mov 0x48(%r12),%rdx 23: 48 8d 44 10 01 lea 0x1(%rax,%rdx,1),%rax 28: 31 d2 xor %edx,%edx * 2a: 48 f7 f1 div %rcx <-- trapping instruction 2d: 48 01 d6 add %rdx,%rsi 30: 8b 53 18 mov 0x18(%rbx),%edx 33: b9 08 00 00 00 mov $0x8,%ecx 38: e8 87 ac f4 ff call 0xfff4acc4 3d: 49 89 c5 mov %rax,%r13