REISERFS warning (device loop0): 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 dfff800000000001
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
Mem abort info:
  ESR = 0x0000000096000006
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
[dfff800000000001] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4873 Comm: syz.0.95 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : reiserfs_get_block+0x1114/0x3860 fs/reiserfs/inode.c:1052
lr : reiserfs_get_block+0x10dc/0x3860 fs/reiserfs/inode.c:1047
sp : ffff8000219471e0
x29: ffff8000219476e0 x28: 0000000000000010 x27: ffff0000e0735d98
x26: ffff0000e1558858 x25: 00000000000003f4 x24: 0000000000000000
x23: ffff0000e1558830 x22: 0000000000000216 x21: 000000000000000c
x20: ffff700004328e60 x19: dfff800000000000 x18: 1fffe00033e7697e
x17: ffff80001537d000 x16: ffff8000082f2a30 x15: 0000000000000000
x14: 0000000000000004 x13: 1ffff00004328ecc x12: 0000000000000000
x11: ff00800008c9d660 x10: 0000000000000000 x9 : ffff0000d188b800
x8 : 0000000000000001 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000000 x1 : 00000000000003f4 x0 : 0000000000000000
Call trace:
 reiserfs_get_block+0x1114/0x3860 fs/reiserfs/inode.c:1052
 __block_write_begin_int+0x3d8/0x13c0 fs/buffer.c:1991
 __block_write_begin+0x7c/0xa0 fs/buffer.c:2041
 reiserfs_write_begin+0x328/0x718 fs/reiserfs/inode.c:2775
 generic_perform_write+0x240/0x508 mm/filemap.c:3862
 __generic_file_write_iter+0x130/0x250 mm/filemap.c:3960
 generic_file_write_iter+0xb4/0x2b0 mm/filemap.c:3989
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3c8/0x7c8 fs/read_write.c:584
 ksys_pwrite64 fs/read_write.c:699 [inline]
 __do_sys_pwrite64 fs/read_write.c:709 [inline]
 __se_sys_pwrite64 fs/read_write.c:706 [inline]
 __arm64_sys_pwrite64+0x178/0x210 fs/read_write.c:706
 __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: 8b180b88 b94303f6 d1001115 d343fea8 (38f36908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	8b180b88 	add	x8, x28, x24, lsl #2
   4:	b94303f6 	ldr	w22, [sp, #768]
   8:	d1001115 	sub	x21, x8, #0x4
   c:	d343fea8 	lsr	x8, x21, #3
* 10:	38f36908 	ldrsb	w8, [x8, x19] <-- trapping instruction