=================================================================== REISERFS panic (device loop0): PAP-5580 reiserfs_cut_from_item: item to convert does not exist ([2 5 0x1 IND]) ------------[ cut here ]------------ kernel BUG at fs/reiserfs/prints.c:390! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 6594 Comm: syz.0.710 Not tainted 5.15.163-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:__reiserfs_panic+0x13a/0x140 fs/reiserfs/prints.c:390 Code: c7 c1 c0 63 9b 8a 48 0f 44 c8 48 0f 44 d8 48 c7 c7 80 64 9b 8a 4c 89 fe 48 89 da 4d 89 f0 49 c7 c1 20 70 51 91 e8 f6 26 0f 08 <0f> 0b 0f 1f 40 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 RSP: 0018:ffffc90003176e40 EFLAGS: 00010246 RAX: 000000000000006e RBX: ffffffff8a9b82a0 RCX: 50291d47048c1300 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90003176f30 R08: ffffffff8166868c R09: ffffed10173667a8 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8a9b82c0 R13: ffffc90003176e60 R14: ffffffff8c17c094 R15: ffff888065a506a8 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fad414ca000 CR3: 00000000165dd000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: reiserfs_cut_from_item+0x213e/0x2560 fs/reiserfs/stree.c:1729 reiserfs_do_truncate+0xa12/0x15b0 fs/reiserfs/stree.c:1973 reiserfs_truncate_file+0x638/0xda0 fs/reiserfs/inode.c:2318 reiserfs_file_release+0x8c6/0xaa0 fs/reiserfs/file.c:109 __fput+0x3fe/0x8e0 fs/file_table.c:280 task_work_run+0x129/0x1a0 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0x6a3/0x2480 kernel/exit.c:874 do_group_exit+0x144/0x310 kernel/exit.c:996 get_signal+0xc66/0x14e0 kernel/signal.c:2889 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:320 exc_page_fault+0x342/0x700 arch/x86/mm/fault.c:1504 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568 RIP: 0033:0x58f3 Code: Unable to access opcode bytes at RIP 0x58c9. RSP: 002b:0000000020000038 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007f706e748f60 RCX: 00007f706e5b8b59 RDX: 0000000020000080 RSI: 0000000020000030 RDI: 0000000000040000 RBP: 00007f706e627e5d R08: 0000000020000180 R09: 0000000020000180 R10: 0000000020000100 R11: 0000000000000206 R12: 0000000000000000 R13: 000000000000000b R14: 00007f706e748f60 R15: 00007ffe0c5ac948 Modules linked in: ---[ end trace 5172f510cafbf535 ]--- RIP: 0010:__reiserfs_panic+0x13a/0x140 fs/reiserfs/prints.c:390 Code: c7 c1 c0 63 9b 8a 48 0f 44 c8 48 0f 44 d8 48 c7 c7 80 64 9b 8a 4c 89 fe 48 89 da 4d 89 f0 49 c7 c1 20 70 51 91 e8 f6 26 0f 08 <0f> 0b 0f 1f 40 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 RSP: 0018:ffffc90003176e40 EFLAGS: 00010246 RAX: 000000000000006e RBX: ffffffff8a9b82a0 RCX: 50291d47048c1300 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90003176f30 R08: ffffffff8166868c R09: ffffed10173667a8 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8a9b82c0 R13: ffffc90003176e60 R14: ffffffff8c17c094 R15: ffff888065a506a8 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fad414ca000 CR3: 00000000743d4000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400