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: 24 Comm: kworker/1:1 Tainted: G W 5.14.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event 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: ffffc90005d3a000 RDX: 0000000000040000 RSI: ffffffff830a0050 RDI: ffffc90000148928 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000003 R10: fffff52000029125 R11: 0000000000000000 R12: ffff888113bbb678 R13: ffff888113bbb240 R14: ffff888113bbb688 R15: ffff88810c1a95a8 FS: 0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffc8 CR3: 0000000108f34000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:197 Code: 4d 89 03 e9 75 fd ff ff b9 ff ff ff ff ba 08 00 00 00 4d 8b 03 48 0f bd ca 49 8b 45 00 48 63 c9 e9 64 ff ff ff 0f 1f 44 00 00 <65> 8b 05 b9 89 c0 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc900001a72e0 EFLAGS: 00000212 RAX: 0000000000013326 RBX: 0000000000000000 RCX: ffffc90011061000 RDX: 0000000000040000 RSI: ffffffff812a5bf5 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff812a5beb R11: 0000000000000000 R12: ffffffff82d7eae0 R13: 0000000000000200 R14: dffffc0000000000 R15: ffffc900001a7340 console_unlock+0x7cb/0xc20 kernel/printk/printk.c:2653 vprintk_emit+0x20a/0x580 kernel/printk/printk.c:2174 dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4553 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4564 __dev_printk+0xcf/0xf5 drivers/base/core.c:4576 _dev_warn+0xd7/0x109 drivers/base/core.c:4620 usb_parse_interface drivers/usb/core/config.c:562 [inline] usb_parse_configuration drivers/usb/core/config.c:795 [inline] usb_get_configuration.cold+0xf9/0x148d drivers/usb/core/config.c:944 usb_enumerate_device drivers/usb/core/hub.c:2391 [inline] usb_new_device+0x583/0x7d0 drivers/usb/core/hub.c:2529 hub_port_connect drivers/usb/core/hub.c:5300 [inline] hub_port_connect_change drivers/usb/core/hub.c:5440 [inline] port_event drivers/usb/core/hub.c:5586 [inline] hub_event+0x2357/0x4330 drivers/usb/core/hub.c:5668 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 6cf811135354e8bb ]--- 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: ffffc90005d3a000 RDX: 0000000000040000 RSI: ffffffff830a0050 RDI: ffffc90000148928 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000003 R10: fffff52000029125 R11: 0000000000000000 R12: ffff888113bbb678 R13: ffff888113bbb240 R14: ffff888113bbb688 R15: ffff88810c1a95a8 FS: 0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffc8 CR3: 0000000108f34000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400