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: 4332 Comm: syz-executor 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 : 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+0x10ac/0x3bc0 fs/reiserfs/journal.c:4083
lr : __getblk include/linux/buffer_head.h:411 [inline]
lr : do_journal_end+0x10a4/0x3bc0 fs/reiserfs/journal.c:4080
sp : ffff800020b674e0
x29: ffff800020b67700 x28: ffff8000218c9000 x27: ffff0000fc138000
x26: ffff0000fe0a6017 x25: ffff8000218c9000 x24: ffff0000fe0a600f
x23: ffff0000fe0a600c x22: 0000000000000000 x21: 0000000000000000
x20: 00000000aaaaaaaa x19: dfff800000000000 x18: 1fffe00033e7277e
x17: ffff80001537d000 x16: ffff8000082dba2c x15: 0000000000000000
x14: 0000000000000001 x13: 1fffff80007c6196 x12: 0000000000000000
x11: ff00800008a9f4f8 x10: 0000000000000000 x9 : ffff800008a9f4f8
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000008 x3 : ffff800008a9f2d4
x2 : 0000000000000001 x1 : 0000000000000002 x0 : 0000000000000000
Call trace:
 __getblk include/linux/buffer_head.h:411 [inline]
 do_journal_end+0x10ac/0x3bc0 fs/reiserfs/journal.c:4080
 do_journal_release+0x410/0x460 fs/reiserfs/journal.c:1940
 journal_release+0x2c/0x40 fs/reiserfs/journal.c:1971
 reiserfs_put_super+0x1fc/0x450 fs/reiserfs/super.c:616
 generic_shutdown_super+0x138/0x32c fs/super.c:501
 kill_block_super+0x78/0xe0 fs/super.c:1470
 reiserfs_kill_sb+0x124/0x13c fs/reiserfs/super.c:570
 deactivate_locked_super+0xb4/0x128 fs/super.c:332
 deactivate_super+0xe4/0x104 fs/super.c:363
 cleanup_mnt+0x3a8/0x430 fs/namespace.c:1191
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1198
 task_work_run+0x1f4/0x280 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x20f8/0x2c84 arch/arm64/kernel/signal.c:1151
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x98/0x128 arch/arm64/kernel/entry-common.c:638
 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 97f68641 d343fc08 aa0003f6 (38736908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	52800103 	mov	w3, #0x8                   	// #8
   4:	97f68641 	bl	0xffffffffffda1908
   8:	d343fc08 	lsr	x8, x0, #3
   c:	aa0003f6 	mov	x22, x0
* 10:	38736908 	ldrb	w8, [x8, x19] <-- trapping instruction