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
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 13359 Comm: kworker/0:2H Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
Workqueue: kblockd blk_mq_run_work_fn
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : blk_mq_tag_is_reserved block/blk-mq.h:224 [inline]
pc : __blk_mq_alloc_driver_tag+0x118/0x554 block/blk-mq.c:1844
lr : blk_mq_tag_busy block/blk-mq.h:211 [inline]
lr : __blk_mq_alloc_driver_tag+0xbc/0x554 block/blk-mq.c:1842
sp : ffff800093f97780
x29: ffff800093f97780 x28: ffff0000c9323000 x27: ffff0000c9323000
x26: 0000000000000000 x25: 1fffe000191f9d02 x24: dfff800000000000
x23: ffff0000c8014000 x22: 0000000000000004 x21: 00000000ffffffff
x20: ffff0000c8fce800 x19: ffff0000c8fce810 x18: 0000000000044c64
x17: 000000000004fffd x16: 000000000004fffe x15: ffff80008a35fda0
x14: ffff80008a5d5e28 x13: 0000000000000002 x12: 0000000000000000
x11: 0000000000000000 x10: ffff7000127f2f12 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 6c3e2d7874636826
x5 : ffff0000f041adef x4 : 0000000000000000 x3 : ffff8000817944e8
x2 : 0000000000000000 x1 : ffff0000cf449d40 x0 : 0000000000000000
Call trace:
 blk_mq_tag_is_reserved block/blk-mq.h:224 [inline] (P)
 __blk_mq_alloc_driver_tag+0x118/0x554 block/blk-mq.c:1844 (P)
 blk_mq_get_driver_tag block/blk-mq.h:374 [inline]
 blk_mq_prep_dispatch_rq block/blk-mq.c:2029 [inline]
 blk_mq_dispatch_rq_list+0x298/0x13a8 block/blk-mq.c:2108
 __blk_mq_sched_dispatch_requests+0x250/0x10e8 block/blk-mq-sched.c:299
 blk_mq_sched_dispatch_requests+0xa8/0x158 block/blk-mq-sched.c:329
 blk_mq_run_work_fn+0x214/0x2e4 block/blk-mq.c:2532
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
Code: 35001b08 910012d6 b94002b5 d343fec8 (38f86908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	35001b08 	cbnz	w8, 0x360
   4:	910012d6 	add	x22, x22, #0x4
   8:	b94002b5 	ldr	w21, [x21]
   c:	d343fec8 	lsr	x8, x22, #3
* 10:	38f86908 	ldrsb	w8, [x8, x24] <-- trapping instruction