BUG: unable to handle page fault for address: ffffffffffffffc8
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 7426067 P4D 7426067 PUD 7428067 PMD 0 
Oops: 0000 [#1] SMP KASAN
CPU: 1 PID: 8 Comm: kworker/u4:0 Tainted: G        W         5.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound call_usermodehelper_exec_work
RIP: 0010:ath9k_htc_rxep+0xb5/0x210 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c:1135
Code: 8b 43 38 48 8d 58 c8 49 39 c4 0f 84 ee 00 00 00 e8 f0 64 37 fe 48 89 d8 48 c1 e8 03 0f b6 04 28 84 c0 74 06 0f 8e 0a 01 00 00 <44> 0f b6 3b 31 ff 44 89 fe e8 fd 6b 37 fe 45 84 ff 75 a8 e8 c3 64
RSP: 0018:ffffc900001489b8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffffffffffffc8 RCX: ffffc9000591a000
RDX: 0000000000040000 RSI: ffffffff830a0050 RDI: ffffc90000148928
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000003
R10: fffff52000029125 R11: 0000000000000000 R12: ffff88814eef3678
R13: ffff88814eef3240 R14: ffff88814eef3688 R15: ffff88811887c3a8
FS:  0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffc8 CR3: 00000001494e3000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ath9k_htc_rx_msg+0x2e4/0xb70 drivers/net/wireless/ath/ath9k/htc_hst.c:461
 ath9k_hif_usb_reg_in_cb+0x1ac/0x630 drivers/net/wireless/ath/ath9k/hif_usb.c:733
 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1656
 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1726
 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1987
 call_timer_fn+0x1a5/0x630 kernel/time/timer.c:1417
 expire_timers kernel/time/timer.c:1462 [inline]
 __run_timers.part.0+0x675/0xa10 kernel/time/timer.c:1731
 __run_timers kernel/time/timer.c:1712 [inline]
 run_timer_softirq+0x80/0x120 kernel/time/timer.c:1744
 __do_softirq+0x1b0/0x910 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x117/0x160 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x10 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x6a/0x90 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:perf_event_init_task+0x189/0x820 kernel/events/core.c:13146
Code: 5d ee ef ff e8 58 ee ef ff 44 8d 63 01 bf 02 00 00 00 bb 01 00 00 00 44 89 e6 e8 72 f6 ef ff 48 83 04 24 08 41 83 fc 02 75 94 <45> 31 ff e8 2f ee ef ff 48 b8 00 00 00 00 00 fc ff df 48 03 44 24
RSP: 0018:ffffc9000008f840 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffff8881002ad1c0 RDI: 0000000000000003
RBP: ffff8881201c1b40 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffff815176fe R11: ffff8881f694f5a8 R12: 0000000000000002
R13: dffffc0000000000 R14: ffff8881002ad1c0 R15: 0000000000808100
 copy_process+0x1c56/0x7040 kernel/fork.c:2093
 kernel_clone+0xe7/0xa70 kernel/fork.c:2509
 kernel_thread+0xb5/0xf0 kernel/fork.c:2561
 call_usermodehelper_exec_work kernel/umh.c:174 [inline]
 call_usermodehelper_exec_work+0xcc/0x180 kernel/umh.c:160
 process_one_work+0x98d/0x15b0 kernel/workqueue.c:2276
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422
 kthread+0x3c0/0x4a0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
CR2: ffffffffffffffc8
---[ end trace 099297c067968461 ]---
RIP: 0010:ath9k_htc_rxep+0xb5/0x210 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c:1135
Code: 8b 43 38 48 8d 58 c8 49 39 c4 0f 84 ee 00 00 00 e8 f0 64 37 fe 48 89 d8 48 c1 e8 03 0f b6 04 28 84 c0 74 06 0f 8e 0a 01 00 00 <44> 0f b6 3b 31 ff 44 89 fe e8 fd 6b 37 fe 45 84 ff 75 a8 e8 c3 64
RSP: 0018:ffffc900001489b8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffffffffffffc8 RCX: ffffc9000591a000
RDX: 0000000000040000 RSI: ffffffff830a0050 RDI: ffffc90000148928
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000003
R10: fffff52000029125 R11: 0000000000000000 R12: ffff88814eef3678
R13: ffff88814eef3240 R14: ffff88814eef3688 R15: ffff88811887c3a8
FS:  0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffc8 CR3: 00000001494e3000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400