REISERFS error (device loop4): vs-5150 search_by_key: invalid format found in block 531. Fsck? REISERFS (device loop4): Remounting filesystem read-only REISERFS error (device loop4): vs-13050 reiserfs_update_sd_size: i/o failure occurred trying to update [2 2 0x0 SD] stat data REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[2 1 0(1) DIR], item_len 35, item_location 4029, free_space(entry_count) 2 REISERFS error (device loop4): vs-5150 search_by_key: invalid format found in block 531. Fsck? general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] CPU: 0 PID: 5558 Comm: syz-executor.4 Not tainted 6.2.0-rc5-syzkaller-00199-g5af6ce704936 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:reiserfs_node_data fs/reiserfs/reiserfs.h:2184 [inline] RIP: 0010:item_head fs/reiserfs/reiserfs.h:2200 [inline] RIP: 0010:tp_item_head fs/reiserfs/reiserfs.h:2226 [inline] RIP: 0010:prepare_for_delete_or_cut+0x182/0x21a0 fs/reiserfs/stree.c:1050 Code: 89 d8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 8a 04 20 84 c0 0f 85 f2 17 00 00 4c 63 3b 49 83 c6 28 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 2f 3f b3 ff 4d 8b 36 48 b8 00 00 RSP: 0018:ffffc900064aee20 EFLAGS: 00010206 RAX: 0000000000000005 RBX: ffffc900064af5e0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000008 RBP: ffffc900064aef88 R08: ffffffff822e5489 R09: ffffc900064af450 R10: 0000000000000002 R11: ffff88801f003a80 R12: dffffc0000000000 R13: 0000000000000000 R14: 0000000000000028 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffebfc1e848 CR3: 000000004040d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: reiserfs_cut_from_item+0x38c/0x25b0 fs/reiserfs/stree.c:1682 reiserfs_do_truncate+0x9d6/0x15a0 fs/reiserfs/stree.c:1973 reiserfs_truncate_file+0x471/0x790 fs/reiserfs/inode.c:2310 reiserfs_file_release+0x887/0xa30 fs/reiserfs/file.c:109 __fput+0x3ba/0x880 fs/file_table.c:320 task_work_run+0x243/0x300 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x644/0x2150 kernel/exit.c:867 do_group_exit+0x1fd/0x2b0 kernel/exit.c:1012 get_signal+0x1701/0x17c0 kernel/signal.c:2859 arch_do_signal_or_restart+0x7b/0x5e0 arch/x86/kernel/signal.c:306 exit_to_user_mode_loop+0x74/0x150 kernel/entry/common.c:168 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:203 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:309 exc_page_fault+0x9a/0x110 arch/x86/mm/fault.c:1578 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x7f7336e31b94 Code: Unable to access opcode bytes at 0x7f7336e31b6a. RSP: 002b:00007f732d9dd190 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00007f7336ef2965 RDX: 00000000000051d9 RSI: 0000000000000000 RDI: 00007f7336ee68f1 RBP: 00007f7336ee7ae9 R08: 00007fff5fb48080 R09: 0000000000000010 R10: 00007fff5fb480b8 R11: 000000000000c53a R12: 0000000000000000 R13: 00007fff5fabac9f R14: 00007f732d9dd300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:reiserfs_node_data fs/reiserfs/reiserfs.h:2184 [inline] RIP: 0010:item_head fs/reiserfs/reiserfs.h:2200 [inline] RIP: 0010:tp_item_head fs/reiserfs/reiserfs.h:2226 [inline] RIP: 0010:prepare_for_delete_or_cut+0x182/0x21a0 fs/reiserfs/stree.c:1050 Code: 89 d8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 8a 04 20 84 c0 0f 85 f2 17 00 00 4c 63 3b 49 83 c6 28 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 2f 3f b3 ff 4d 8b 36 48 b8 00 00 RSP: 0018:ffffc900064aee20 EFLAGS: 00010206 RAX: 0000000000000005 RBX: ffffc900064af5e0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000008 RBP: ffffc900064aef88 R08: ffffffff822e5489 R09: ffffc900064af450 R10: 0000000000000002 R11: ffff88801f003a80 R12: dffffc0000000000 R13: 0000000000000000 R14: 0000000000000028 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6bfca14718 CR3: 000000001e179000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 d8 mov %ebx,%eax 2: 48 c1 e8 03 shr $0x3,%rax 6: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 d: fc ff df 10: 42 8a 04 20 mov (%rax,%r12,1),%al 14: 84 c0 test %al,%al 16: 0f 85 f2 17 00 00 jne 0x180e 1c: 4c 63 3b movslq (%rbx),%r15 1f: 49 83 c6 28 add $0x28,%r14 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 f7 mov %r14,%rdi 34: e8 2f 3f b3 ff callq 0xffb33f68 39: 4d 8b 36 mov (%r14),%r14 3c: 48 rex.W 3d: b8 .byte 0xb8