REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[2 1 0(1) DIR], item_len 35, item_location 4061, free_space(entry_count) 2
REISERFS error (device loop4): vs-5150 search_by_key: invalid format found in block 531. 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: 1 PID: 9973 Comm: syz-executor.4 Not tainted 6.7.0-rc6-syzkaller-gaafe7ad77b91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
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 : ffff80009c5e6aa0
x29: ffff80009c5e6be0 x28: 1ffff000138bce50 x27: ffff7000138bcd6c
x26: ffff80009c5e7288 x25: ffff80009c5e7280 x24: dfff800000000000
x23: dfff800000000000 x22: ffff80009c5e7320 x21: 0000000000000000
x20: 0000000000000028 x19: ffff80009c5e72a0 x18: 1fffe0003682a5ce
x17: ffff80008e4ed000 x16: ffff80008a82b138 x15: 0000000000000001
x14: 0000000000000000 x13: 00000000fffffffe x12: ffff80009c5e6b60
x11: ffff800080e2d878 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 0000000000000005 x7 : ffff80008028df50 x6 : 0000000000000000
x5 : ffff80009c5e7110 x4 : ffff80009c5e7120 x3 : ffff80009c5e7320
x2 : ffff80009c5e7280 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+0x308/0x8e4 fs/file_table.c:394
 ____fput+0x20/0x30 fs/file_table.c:422
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x618/0x1f64 kernel/exit.c:869
 do_group_exit+0x194/0x22c kernel/exit.c:1018
 get_signal+0x1500/0x15ec kernel/signal.c:2904
 do_signal arch/arm64/kernel/signal.c:1249 [inline]
 do_notify_resume+0x3bc/0x393c arch/arm64/kernel/signal.c:1302
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline]
 el0_svc+0x9c/0x158 arch/arm64/kernel/entry-common.c:679
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595
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