REISERFS panic (device loop2): PAP-5580 reiserfs_cut_from_item: item to convert does not exist ([2 6 0x1 IND])
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kernel BUG at fs/reiserfs/prints.c:390!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 29705 Comm: syz-executor.2 Not tainted 6.2.0-rc5-syzkaller-00027-gfb6e71db53f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:__reiserfs_panic+0x12f/0x140 fs/reiserfs/prints.c:390
Code: 00 51 03 8b 48 0f 44 c8 48 0f 44 d8 48 c7 c7 c0 51 03 8b 4c 89 fe 48 89 da 4d 89 f0 49 c7 c1 40 86 16 92 31 c0 e8 71 3b 83 08 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41
RSP: 0018:ffffc90015f86ea0 EFLAGS: 00010246
RAX: 000000000000006e RBX: ffffffff8b037720 RCX: 111c20b944f38900
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90015f86f90 R08: ffffffff816f2b8d R09: fffff52002bf0d8d
R10: fffff52002bf0d8d R11: 1ffff92002bf0d8c R12: ffffffff8b037740
R13: ffffc90015f86ec0 R14: ffffffff8cc76778 R15: ffff88802dd5e6a8
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faa90954000 CR3: 0000000027bc8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 reiserfs_cut_from_item+0x219d/0x25b0 fs/reiserfs/stree.c:1729
 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
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:296
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd7c2a8c0c9
Code: Unable to access opcode bytes at 0x7fd7c2a8c09f.
RSP: 002b:00007fd7c38ac218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fd7c2babf88 RCX: 00007fd7c2a8c0c9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd7c2babf88
RBP: 00007fd7c2babf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd7c2babf8c
R13: 00007ffcf731263f R14: 00007fd7c38ac300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__reiserfs_panic+0x12f/0x140 fs/reiserfs/prints.c:390
Code: 00 51 03 8b 48 0f 44 c8 48 0f 44 d8 48 c7 c7 c0 51 03 8b 4c 89 fe 48 89 da 4d 89 f0 49 c7 c1 40 86 16 92 31 c0 e8 71 3b 83 08 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41
RSP: 0018:ffffc90015f86ea0 EFLAGS: 00010246
RAX: 000000000000006e RBX: ffffffff8b037720 RCX: 111c20b944f38900
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90015f86f90 R08: ffffffff816f2b8d R09: fffff52002bf0d8d
R10: fffff52002bf0d8d R11: 1ffff92002bf0d8c R12: ffffffff8b037740
R13: ffffc90015f86ec0 R14: ffffffff8cc76778 R15: ffff88802dd5e6a8
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faa8fd85058 CR3: 0000000043611000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400