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]  SMP
Modules linked in:
CPU: 1 UID: 0 PID: 100 Comm: jfsCommit Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : metapage_write_folio+0xac/0xa74 fs/jfs/jfs_metapage.c:428
lr : metapage_write_folio+0x8c/0xa74 fs/jfs/jfs_metapage.c:425
sp : ffff800099e27780
x29: ffff800099e27840 x28: dfff800000000000 x27: ffff7000133c4ef8
x26: 1fffffbff8795996 x25: dfff800000000000 x24: ffff7000133c4f14
x23: 0000000000000081 x22: fffffdffc3caccb4 x21: ffff800099e278c0
x20: 0000000000000000 x19: fffffdffc3cacc80 x18: 00000000ffffffff
x17: ffff800093335000 x16: ffff80008ad6b188 x15: 0000000000000001
x14: 1fffffbff8795996 x13: 0000000000000000 x12: 0000000000000000
x11: ffff7fbff8795997 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : fffffffffffffff0 x3 : ffff800081c40b18
x2 : 0000000000000001 x1 : ffff800099e278c0 x0 : fffffdffc3cacc80
Call trace:
 metapage_write_folio+0xac/0xa74 fs/jfs/jfs_metapage.c:428 (P)
 metapage_write_one+0x1cc/0x3d4 fs/jfs/jfs_metapage.c:818
 release_metapage+0x4f8/0xa3c fs/jfs/jfs_metapage.c:884
 put_metapage+0x1ec/0x288 fs/jfs/jfs_metapage.c:862
 txUnlock+0x464/0xca0 fs/jfs/jfs_txnmgr.c:948
 txLazyCommit fs/jfs/jfs_txnmgr.c:2683 [inline]
 jfs_lazycommit+0x480/0x94c fs/jfs/jfs_txnmgr.c:2734
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
Code: aa1403e0 97c10d7f f9400294 d343fe88 (387c6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa1403e0 	mov	x0, x20
   4:	97c10d7f 	bl	0xffffffffff043600
   8:	f9400294 	ldr	x20, [x20]
   c:	d343fe88 	lsr	x8, x20, #3
* 10:	387c6908 	ldrb	w8, [x8, x28] <-- trapping instruction