REISERFS warning (device loop4): vs-13060 reiserfs_update_sd_size: stat data of object [2 5 0x0 SD] (nlink == 1) not found (pos 2)
Unable to handle kernel paging request at virtual address dfff80001fffffff
KASAN: probably user-memory-access in range [0x00000000fffffff8-0x00000000ffffffff]
Mem abort info:
  ESR = 0x0000000096000007
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x07: level 3 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000007
  CM = 0, WnR = 0
[dfff80001fffffff] address between user and kernel address ranges
Internal error: Oops: 0000000096000007 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4776 Comm: syz.4.52 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : scnprintf_cpu_key fs/reiserfs/prints.c:95 [inline]
pc : prepare_error_buf+0x870/0x18c0 fs/reiserfs/prints.c:229
lr : prepare_error_buf+0x574/0x18c0 fs/reiserfs/prints.c:230
sp : ffff800021247380
x29: ffff800021247500 x28: ffff80001c747bfe x27: ffffffffffffffe2
x26: 000000000000004b x25: dfff800000000000 x24: ffff80001c748afe
x23: ffff800021247580 x22: ffff800021247400 x21: 00000000ffffffff
x20: ffff8000156ed4c0 x19: ffff700004248e80 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082f2858 x15: 0000000000000002
x14: 000000000000007a x13: 0000000000ff0100 x12: 0000000000080000
x11: 00000000000037c6 x10: ffff800029d5d000 x9 : ffff800008ccee48
x8 : 000000001fffffff x7 : 20726f6620686372 x6 : 7261657320666f20
x5 : ffff80001c747bfe x4 : ffff80001c748afe x3 : ffff800011a94a14
x2 : 000000000000000f x1 : 00000000ffffffe0 x0 : 00000000fffffff9
Call trace:
 scnprintf_cpu_key fs/reiserfs/prints.c:95 [inline]
 prepare_error_buf+0x870/0x18c0 fs/reiserfs/prints.c:229
 __reiserfs_error+0xdc/0x2a0 fs/reiserfs/prints.c:396
 reiserfs_do_truncate+0x264/0xfd0 fs/reiserfs/stree.c:1930
 reiserfs_truncate_file+0x3a4/0xb04 fs/reiserfs/inode.c:2310
 reiserfs_vfs_truncate_file+0x34/0x4c fs/reiserfs/file.c:133
 reiserfs_direct_IO+0x1e8/0x20c fs/reiserfs/inode.c:3258
 generic_file_direct_write+0x104/0x2b4 mm/filemap.c:3787
 __generic_file_write_iter+0x144/0x250 mm/filemap.c:3945
 generic_file_write_iter+0xb4/0x2b0 mm/filemap.c:3989
 call_write_iter include/linux/fs.h:2271 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3c8/0x7c8 fs/read_write.c:584
 ksys_write+0x12c/0x228 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:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: 912f8108 cb1c011b b40004b5 d343fea8 (38f96908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	912f8108 	add	x8, x8, #0xbe0
   4:	cb1c011b 	sub	x27, x8, x28
   8:	b40004b5 	cbz	x21, 0x9c
   c:	d343fea8 	lsr	x8, x21, #3
* 10:	38f96908 	ldrsb	w8, [x8, x25] <-- trapping instruction