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 loop2): vs-5150 search_by_key: invalid format found in block 532. Fsck?
REISERFS (device loop2): Remounting filesystem read-only
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: 15874 Comm: syz-executor.2 Not tainted 6.7.0-rc3-syzkaller-g2cc14f52aeb7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
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 : direct2indirect+0x3d0/0x10f8 fs/reiserfs/tail_conversion.c:74
lr : tp_item_head fs/reiserfs/reiserfs.h:2225 [inline]
lr : direct2indirect+0x388/0x10f8 fs/reiserfs/tail_conversion.c:74
sp : ffff80009aa06de0
x29: ffff80009aa06f20 x28: ffff00012b1f0000 x27: 0000000000000028
x26: ffff80009aa06ea0 x25: ffff80009aa06e60 x24: ffff000129db3690
x23: dfff800000000000 x22: 0000000000000001 x21: ffff80009aa07410
x20: ffff80009aa07430 x19: 0000000000000000 x18: 1fffe0003682a9ce
x17: ffff80008e4dd000 x16: ffff80008a825660 x15: 0000000000000001
x14: 0000000000000002 x13: 00000000fffffffe x12: ffff0000ce4e3780
x11: 0000000000040000 x10: 00000000000045f1 x9 : ffff800098aa0000
x8 : 0000000000000005 x7 : ffff8000802921f8 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff800080bb2828
x2 : 0000000000000001 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]
 direct2indirect+0x3d0/0x10f8 fs/reiserfs/tail_conversion.c:74
 reiserfs_get_block+0x40c4/0x45d8 fs/reiserfs/inode.c:949
 __block_write_begin_int+0x3f0/0x1504 fs/buffer.c:2119
 __block_write_begin+0x7c/0xa0 fs/buffer.c:2168
 reiserfs_write_begin+0x328/0x71c fs/reiserfs/inode.c:2767
 generic_perform_write+0x28c/0x588 mm/filemap.c:3918
 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4013
 generic_file_write_iter+0xb8/0x2b4 mm/filemap.c:4039
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x610/0x910 fs/read_write.c:584
 ksys_write+0x15c/0x26c fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __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:595
Code: 35004b88 9100a27b b9800293 d343ff68 (38776908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	35004b88 	cbnz	w8, 0x970
   4:	9100a27b 	add	x27, x19, #0x28
   8:	b9800293 	ldrsw	x19, [x20]
   c:	d343ff68 	lsr	x8, x27, #3
* 10:	38776908 	ldrb	w8, [x8, x23] <-- trapping instruction