Unable to handle kernel paging request at virtual address ffffffffffffffec
KASAN: maybe wild-memory-access in range [0x0003ffffffffff60-0x0003ffffffffff67]
Mem abort info:
  ESR = 0x0000000096000004
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x04: level 0 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000004
  CM = 0, WnR = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=000000020dfcc000
[ffffffffffffffec] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 39 Comm: kworker/u4:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
Workqueue: writeback wb_workfn (flush-7:2)
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ext4_ext_drop_refs fs/ext4/extents.c:119 [inline]
pc : ext4_free_ext_path fs/ext4/extents.c:128 [inline]
pc : ext4_ext_map_blocks+0x2a70/0x570c fs/ext4/extents.c:4497
lr : ext4_ext_map_blocks+0x1654/0x570c fs/ext4/extents.c:4427
sp : ffff80001cee6a80
x29: ffff80001cee6d00 x28: dfff800000000000 x27: 0000000000000008
x26: ffff80001cee7148 x25: 0000000000000001 x24: 0000000000000008
x23: 0000000000000008 x22: ffff0000f65948e8 x21: 0000000000000008
x20: ffff80001cee7148 x19: ffffffffffffffe4 x18: ffff800011b9bf60
x17: 1fffe00033eaa57e x16: ffff8000082d92bc x15: ffff800008a66efc
x14: 0000000000000001 x13: 1ffff00002b4e732 x12: 0000000000ff0100
x11: ff00800008d259ac x10: 0000000000000000 x9 : ffff800008d259ac
x8 : 0000000000000000 x7 : ffff800008a5d604 x6 : ffff800008a6541c
x5 : ffff0000d99e0cc8 x4 : ffff80001cee6530 x3 : 0000000000000000
x2 : 0000000000000006 x1 : 0000000000000000 x0 : ffffffffffffffec
Call trace:
 ext4_ext_drop_refs fs/ext4/extents.c:119 [inline]
 ext4_free_ext_path fs/ext4/extents.c:128 [inline]
 ext4_ext_map_blocks+0x2a70/0x570c fs/ext4/extents.c:4497
 ext4_map_blocks+0x860/0x1778 fs/ext4/inode.c:679
 mpage_map_one_extent fs/ext4/inode.c:2434 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2487 [inline]
 ext4_writepages+0xdbc/0x28b4 fs/ext4/inode.c:2855
 do_writepages+0x2b0/0x504 mm/page-writeback.c:2491
 __writeback_single_inode+0x164/0x1554 fs/fs-writeback.c:1622
 writeback_sb_inodes+0x858/0x143c fs/fs-writeback.c:1913
 wb_writeback+0x414/0xfcc fs/fs-writeback.c:2087
 wb_do_writeback fs/fs-writeback.c:2230 [inline]
 wb_workfn+0x360/0xe18 fs/fs-writeback.c:2270
 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292
 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
Code: 2a1803fb d343fc08 38fc6908 35006ba8 (79401276) 
---[ end trace 0000000000000000 ]---
pstore: crypto_comp_compress failed, ret = -22!
----------------
Code disassembly (best guess):
   0:	2a1803fb 	mov	w27, w24
   4:	d343fc08 	lsr	x8, x0, #3
   8:	38fc6908 	ldrsb	w8, [x8, x28]
   c:	35006ba8 	cbnz	w8, 0xd80
* 10:	79401276 	ldrh	w22, [x19, #8] <-- trapping instruction