REISERFS warning: reiserfs-5090 is_tree_node: node level 0 does not match to the expected one -1 REISERFS error (device loop3): vs-5150 search_by_key: invalid format found in block 0. Fsck? divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5794 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:do_journal_end+0x135f/0x4860 fs/reiserfs/journal.c:4096 Code: 0f b6 04 20 84 c0 0f 85 1f 30 00 00 49 8d 44 1d 01 4c 89 f1 48 c1 e9 03 42 0f b6 0c 21 84 c9 0f 85 26 30 00 00 41 8b 0f 31 d2 <48> f7 f1 49 89 d6 4c 03 74 24 08 48 8b 84 24 d8 00 00 00 42 80 3c RSP: 0018:ffffc90003d77720 EFLAGS: 00010246 RAX: 0000000000000003 RBX: 0000000000000002 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8abcd100 RDI: ffff88804828eff4 RBP: ffffc90003d77990 R08: 424c724573496552 R09: 424c724573496552 R10: dffffc0000000000 R11: ffffed1009051e00 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff88804742b017 R15: ffff88804742b014 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe78c96f68 CR3: 000000002b587000 CR4: 00000000003506f0 Call Trace: do_journal_release+0x4ef/0x550 fs/reiserfs/journal.c:1940 journal_release+0x1f/0x30 fs/reiserfs/journal.c:1971 reiserfs_put_super+0x222/0x480 fs/reiserfs/super.c:616 generic_shutdown_super+0x134/0x2b0 fs/super.c:693 kill_block_super+0x44/0x90 fs/super.c:1660 deactivate_locked_super+0x97/0x100 fs/super.c:481 cleanup_mnt+0x429/0x4c0 fs/namespace.c:1250 task_work_run+0x1ce/0x250 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0x90b/0x23c0 kernel/exit.c:883 do_group_exit+0x21b/0x2d0 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+0x3f/0x40 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: 0033:0x7f1737f8eba9 Code: Unable to access opcode bytes at 0x7f1737f8eb7f. RSP: 002b:00007ffe78c97568 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f1738011c77 RCX: 00007f1737f8eba9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000010 R08: 00007ffe78c95306 R09: 00007ffe78c98820 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe78c98820 R13: 00007f1738011c05 R14: 000055556c2554a8 R15: 00007ffe78c998f0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_journal_end+0x135f/0x4860 fs/reiserfs/journal.c:4096 Code: 0f b6 04 20 84 c0 0f 85 1f 30 00 00 49 8d 44 1d 01 4c 89 f1 48 c1 e9 03 42 0f b6 0c 21 84 c9 0f 85 26 30 00 00 41 8b 0f 31 d2 <48> f7 f1 49 89 d6 4c 03 74 24 08 48 8b 84 24 d8 00 00 00 42 80 3c RSP: 0018:ffffc90003d77720 EFLAGS: 00010246 RAX: 0000000000000003 RBX: 0000000000000002 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8abcd100 RDI: ffff88804828eff4 RBP: ffffc90003d77990 R08: 424c724573496552 R09: 424c724573496552 R10: dffffc0000000000 R11: ffffed1009051e00 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff88804742b017 R15: ffff88804742b014 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e022ff8 CR3: 000000006184c000 CR4: 00000000003506e0 ---------------- Code disassembly (best guess): 0: 0f b6 04 20 movzbl (%rax,%riz,1),%eax 4: 84 c0 test %al,%al 6: 0f 85 1f 30 00 00 jne 0x302b c: 49 8d 44 1d 01 lea 0x1(%r13,%rbx,1),%rax 11: 4c 89 f1 mov %r14,%rcx 14: 48 c1 e9 03 shr $0x3,%rcx 18: 42 0f b6 0c 21 movzbl (%rcx,%r12,1),%ecx 1d: 84 c9 test %cl,%cl 1f: 0f 85 26 30 00 00 jne 0x304b 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: 4c 03 74 24 08 add 0x8(%rsp),%r14 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