Unable to handle kernel paging request at virtual address dfff800000000000
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
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
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 6253 Comm: syz-executor.0 Not tainted 6.5.0-syzkaller-01207-g1c59d383390f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
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:151 [inline]
pc : do_journal_end+0x10e8/0x3d0c fs/reiserfs/journal.c:4086
lr : __getblk include/linux/buffer_head.h:424 [inline]
lr : do_journal_end+0x10e0/0x3d0c fs/reiserfs/journal.c:4083
sp : ffff8000964d7440
x29: ffff8000964d7670 x28: ffff8000964d7758 x27: ffff0000d4e76628
x26: ffff0000d4e76628 x25: ffff8000964d7748 x24: ffff0000d4e76018
x23: ffff800096739000 x22: ffff800096739040 x21: 0000000000000000
x20: ffff0000c149c500 x19: dfff800000000000 x18: ffff8000964d7060
x17: ffff80008dd3d000 x16: ffff80008027092c x15: 0000000000000001
x14: 1fffff8000b8681e x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff800080b9c2b8
x2 : 0000000000000001 x1 : 0000000000000003 x0 : 0000000000000000
Call trace:
 __getblk include/linux/buffer_head.h:424 [inline]
 do_journal_end+0x10e8/0x3d0c fs/reiserfs/journal.c:4083
 journal_end_sync+0x164/0x1d0 fs/reiserfs/journal.c:3542
 reiserfs_sync_fs+0xd4/0x150 fs/reiserfs/super.c:78
 sync_filesystem+0xe8/0x218 fs/sync.c:56
 generic_shutdown_super+0x70/0x2b8 fs/super.c:656
 kill_block_super+0x40/0x74 fs/super.c:1607
 reiserfs_kill_sb+0x134/0x14c fs/reiserfs/super.c:570
 deactivate_locked_super+0xb0/0x218 fs/super.c:454
 deactivate_super+0xe0/0x100 fs/super.c:504
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1254
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1261
 task_work_run+0x230/0x2e0 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1305
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline]
 el0_svc+0xa0/0x16c arch/arm64/kernel/entry-common.c:679
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591
Code: 52800103 97f5d9e4 d343fc08 aa0003f5 (38736908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	52800103 	mov	w3, #0x8                   	// #8
   4:	97f5d9e4 	bl	0xffffffffffd76794
   8:	d343fc08 	lsr	x8, x0, #3
   c:	aa0003f5 	mov	x21, x0
* 10:	38736908 	ldrb	w8, [x8, x19] <-- trapping instruction