(jbd2/loop4-29,4657,1):ocfs2_abort_trigger:596 ERROR: ocfs2_abort_trigger called by JBD2.  bh = 0xffff0000e4328910, bh->b_blocknr = 16969
OCFS2: ERROR (device (efault)): void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *, struct buffer_head *): JBD2 has aborted our journal, ocfs2 cannot continue
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: 4657 Comm: jbd2/loop4-29 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ocfs2_handle_error+0x34/0x21c fs/ocfs2/super.c:2532
lr : ocfs2_handle_error+0x2c/0x21c fs/ocfs2/super.c:2531
sp : ffff800021247650
x29: ffff800021247650 x28: ffff0000e02d2600 x27: ffff0001017d00b0
x26: ffff0001017d00b8 x25: dfff800000000000 x24: ffff8000212476e0
x23: ffff700004248edc x22: dfff800000000000 x21: ffff800011e2ea00
x20: 0000000000000000 x19: 0000000000000678 x18: ffff800011a5bd40
x17: 0000000000000000 x16: ffff8000082d3a08 x15: 0000000000000000
x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000ff0100
x11: ff00800011836b40 x10: 0000000000000000 x9 : ffff800011836b40
x8 : 00000000000000cf x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800021247178 x4 : ffff800015134e00 x3 : ffff80000852f9b8
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
 ocfs2_handle_error+0x34/0x21c fs/ocfs2/super.c:2532
 __ocfs2_error+0xfc/0x148 fs/ocfs2/super.c:2575
 ocfs2_abort_trigger+0xfc/0x13c fs/ocfs2/journal.c:598
 jbd2_buffer_abort_trigger+0x70/0x94 fs/jbd2/transaction.c:1464
 jbd2_journal_commit_transaction+0xfdc/0x55d8 fs/jbd2/commit.c:623
 kjournald2+0x36c/0x694 fs/jbd2/journal.c:210
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
Code: f2fbfff6 979ef012 9119e293 d343fe68 (38766908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	f2fbfff6 	movk	x22, #0xdfff, lsl #48
   4:	979ef012 	bl	0xfffffffffe7bc04c
   8:	9119e293 	add	x19, x20, #0x678
   c:	d343fe68 	lsr	x8, x19, #3
* 10:	38766908 	ldrb	w8, [x8, x22] <-- trapping instruction