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 dfff800000000000
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
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
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4784 Comm: syz.0.104 Not tainted 6.1.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline]
pc : set_buffer_uptodate include/linux/buffer_head.h:148 [inline]
pc : do_journal_end+0x10cc/0x3c6c fs/reiserfs/journal.c:4083
lr : __getblk include/linux/buffer_head.h:411 [inline]
lr : do_journal_end+0x10c4/0x3c6c fs/reiserfs/journal.c:4080
sp : ffff8000216d6c60
x29: ffff8000216d6e70 x28: ffff0000c3895c18 x27: ffff0000ff0ae678
x26: ffff0000ff0ae678 x25: ffff0000c3895c08 x24: ffff0000ff0ae018
x23: ffff800021789040 x22: ffff0000ff0ae000 x21: 0000000000000000
x20: ffff0000c054b700 x19: dfff800000000000 x18: ffff8000216d68a0
x17: ffff800018b7c000 x16: ffff80000825b6ac x15: ffff80001865cf80
x14: ffff0000d8368a78 x13: dfff800000000000 x12: 0000000000080000
x11: 0000000000010a90 x10: ffff8000224c9000 x9 : ffff800008b37c7c
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff800008b379fc
x2 : 0000000000000001 x1 : 0000000000000003 x0 : 0000000000000000
Call trace:
 __getblk include/linux/buffer_head.h:411 [inline]
 do_journal_end+0x10cc/0x3c6c fs/reiserfs/journal.c:4080
 journal_end+0x1bc/0x260 fs/reiserfs/journal.c:3418
 restart_transaction+0xf4/0x1cc fs/reiserfs/inode.c:268
 reiserfs_get_block+0x28d0/0x45d8 fs/reiserfs/inode.c:766
 __block_write_begin_int+0x340/0x13b4 fs/buffer.c:1991
 __block_write_begin+0x7c/0xa0 fs/buffer.c:2041
 reiserfs_write_begin+0x328/0x71c fs/reiserfs/inode.c:2775
 generic_perform_write+0x278/0x55c mm/filemap.c:3845
 __generic_file_write_iter+0x168/0x388 mm/filemap.c:3973
 generic_file_write_iter+0xb8/0x2b4 mm/filemap.c:4005
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x610/0x91c 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:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 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: 52800103 97f5e8fb d343fc08 aa0003f5 (38736908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	52800103 	mov	w3, #0x8                   	// #8
   4:	97f5e8fb 	bl	0xffffffffffd7a3f0
   8:	d343fc08 	lsr	x8, x0, #3
   c:	aa0003f5 	mov	x21, x0
* 10:	38736908 	ldrb	w8, [x8, x19] <-- trapping instruction