REISERFS warning (device loop0): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block
REISERFS warning (device loop0): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block
Unable to handle kernel paging request at virtual address dfff800000000005
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
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
[dfff800000000005] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 5031 Comm: syz.0.113 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : do_journal_end+0xf38/0x3bac fs/reiserfs/journal.c:4096
lr : __getblk include/linux/buffer_head.h:411 [inline]
lr : do_journal_end+0xf2c/0x3bac fs/reiserfs/journal.c:4093
sp : ffff800021636e00
x29: ffff800021637030 x28: ffff0000da2fc000 x27: ffff0000da2fc678
x26: ffff800021be9030 x25: ffff800021be9040 x24: ffff0000da2fc018
x23: ffff800021be9048 x22: 0000000000000012 x21: 0000000000000003
x20: 0000000000000000 x19: dfff800000000000 x18: ffff800011babf60
x17: 1fffe00033ea397e x16: ffff8000082efb0c x15: 0000000040000002
x14: 0000000000000001 x13: 1fffff80007b2ff6 x12: 0000000000080000
x11: 0000000000010574 x10: ffff800021e69000 x9 : ffff800008a921d4
x8 : 0000000000000005 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008a91fa4
x2 : 0000000000000001 x1 : 0000000000000003 x0 : 0000000000000028
Call trace:
 do_journal_end+0xf38/0x3bac fs/reiserfs/journal.c:4096
 journal_end+0x1cc/0x270 fs/reiserfs/journal.c:3418
 restart_transaction+0xf4/0x1cc fs/reiserfs/inode.c:268
 reiserfs_get_block+0x1ecc/0x36e8 fs/reiserfs/inode.c:766
 __block_write_begin_int+0x350/0x1388 fs/buffer.c:1991
 __block_write_begin+0x7c/0xa0 fs/buffer.c:2041
 reiserfs_write_begin+0x328/0x714 fs/reiserfs/inode.c:2775
 generic_perform_write+0x234/0x4f4 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+0x3ec/0x7f0 fs/read_write.c:584
 ksys_write+0x12c/0x224 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+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 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: 97f6931b aa0003f4 9100a000 d343fc08 (38736908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	97f6931b 	bl	0xffffffffffda4c6c
   4:	aa0003f4 	mov	x20, x0
   8:	9100a000 	add	x0, x0, #0x28
   c:	d343fc08 	lsr	x8, x0, #3
* 10:	38736908 	ldrb	w8, [x8, x19] <-- trapping instruction