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 loop0): vs-5150 search_by_key: invalid format found in block 533. Fsck?
Unable to handle kernel paging request at virtual address dfff800000000005
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfff800000000005] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 6364 Comm: syz-executor.0 Not tainted 6.8.0-rc6-syzkaller-00238-g5ad3cb0ed525 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : reiserfs_node_data fs/reiserfs/reiserfs.h:2183 [inline]
pc : item_head fs/reiserfs/reiserfs.h:2199 [inline]
pc : tp_item_head fs/reiserfs/reiserfs.h:2225 [inline]
pc : prepare_for_delete_or_cut+0x130/0x1a34 fs/reiserfs/stree.c:1050
lr : tp_item_head fs/reiserfs/reiserfs.h:2225 [inline]
lr : prepare_for_delete_or_cut+0xf0/0x1a34 fs/reiserfs/stree.c:1050
sp : ffff800096ab70c0
x29: ffff800096ab7200 x28: 1ffff00012d56f14 x27: ffff700012d56e30
x26: ffff800096ab78a8 x25: ffff800096ab78a0 x24: dfff800000000000
x23: dfff800000000000 x22: ffff800096ab7940 x21: 0000000000000000
x20: 0000000000000028 x19: ffff800096ab78c0 x18: 1fffe00036844996
x17: ffff80008e0bd000 x16: ffff80008a7037a8 x15: 0000000000000001
x14: 0000000000000000 x13: 00000000fffffffe x12: ffff800096ab7180
x11: ffff800080e97fcc x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 0000000000000005 x7 : ffff800080296c78 x6 : 0000000000000000
x5 : ffff800096ab7730 x4 : ffff800096ab7740 x3 : ffff800096ab7940
x2 : ffff800096ab78a0 x1 : 0000000000000001 x0 : 0000000000000008
Call trace:
 reiserfs_node_data fs/reiserfs/reiserfs.h:2183 [inline]
 item_head fs/reiserfs/reiserfs.h:2199 [inline]
 tp_item_head fs/reiserfs/reiserfs.h:2225 [inline]
 prepare_for_delete_or_cut+0x130/0x1a34 fs/reiserfs/stree.c:1050
 reiserfs_cut_from_item+0x2ac/0x1c98 fs/reiserfs/stree.c:1680
 reiserfs_do_truncate+0x860/0x110c fs/reiserfs/stree.c:1971
 reiserfs_truncate_file+0x510/0xb18 fs/reiserfs/inode.c:2302
 reiserfs_file_release+0x710/0x884 fs/reiserfs/file.c:109
 __fput+0x30c/0x738 fs/file_table.c:376
 __fput_sync+0x60/0x9c fs/file_table.c:461
 __do_sys_close fs/open.c:1554 [inline]
 __se_sys_close fs/open.c:1539 [inline]
 __arm64_sys_close+0x150/0x1e0 fs/open.c:1539
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
Code: 35008b48 9100a294 b9800275 d343fe88 (38786908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	35008b48 	cbnz	w8, 0x1168
   4:	9100a294 	add	x20, x20, #0x28
   8:	b9800275 	ldrsw	x21, [x19]
   c:	d343fe88 	lsr	x8, x20, #3
* 10:	38786908 	ldrb	w8, [x8, x24] <-- trapping instruction