Unable to handle kernel paging request at virtual address dfff8000000000cf
KASAN: null-ptr-deref in range [0x0000000000000678-0x000000000000067f]
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
[dfff8000000000cf] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4421 Comm: jbd2/loop0-29 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 : ocfs2_handle_error+0x34/0x21c fs/ocfs2/super.c:2530
lr : ocfs2_handle_error+0x2c/0x21c fs/ocfs2/super.c:2529
sp : ffff800021697690
x29: ffff800021697690 x28: dfff800000000000 x27: 0000000000000002
x26: ffff0000de4a8000 x25: dfff800000000000 x24: ffff800021697760
x23: ffff800021697720 x22: ffff7000042d2ee4 x21: 0000000000000678
x20: dfff800000000000 x19: 0000000000000000 x18: 1fffe00033e7697e
x17: ffff80001537d000 x16: ffff800011b90080 x15: 0000000040000000
x14: 0000000000000001 x13: 1ffff000042d2e44 x12: 0000000000000000
x11: ff00800011ac5970 x10: 0000000000000000 x9 : ffff800011ac5970
x8 : 00000000000000cf
 x7 : ffff80000825ab50
 x6 : 0000000000000000

x5 : 0000000000000080
 x4 : 0000000000000001 x3 : ffff80000a927f5c
x2 : ffff00019f3b4d10 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
 ocfs2_handle_error+0x34/0x21c fs/ocfs2/super.c:2530
 __ocfs2_error+0x10c/0x168 fs/ocfs2/super.c:2573
 ocfs2_abort_trigger+0x10c/0x14c fs/ocfs2/journal.c:602
 jbd2_buffer_abort_trigger+0x70/0x94 fs/jbd2/transaction.c:1473
 jbd2_journal_commit_transaction+0x1064/0x5680 fs/jbd2/commit.c:623
 kjournald2+0x370/0x6a4 fs/jbd2/journal.c:210
 kthread+0x254/0x2e0 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
Code: f2fbfff4 9794c058 9119e275 d343fea8 (38746908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	f2fbfff4 	movk	x20, #0xdfff, lsl #48
   4:	9794c058 	bl	0xfffffffffe530164
   8:	9119e275 	add	x21, x19, #0x678
   c:	d343fea8 	lsr	x8, x21, #3
* 10:	38746908 	ldrb	w8, [x8, x20] <-- trapping instruction