BUG: unable to handle page fault for address: ffffffffffffffc8 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD c68f067 P4D c68f067 PUD c691067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ath9k_htc_rxep+0x83/0x1c0 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c:1135 Code: 3c 38 00 74 08 48 89 df e8 ba 5d 5a fc 48 8b 1b 48 39 eb 74 36 4c 8d 73 c8 4d 89 f5 49 c1 ed 03 43 0f b6 44 3d 00 84 c0 75 0d <41> 80 3e 00 74 32 e8 f2 2d 10 fc eb c0 44 89 f1 80 e1 07 38 c1 7c RSP: 0018:ffffc90000dc07c8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000dc06a0 RBP: ffff88808fe5b6d8 R08: dffffc0000000000 R09: 0000000000000003 R10: fffff520001b80d5 R11: 0000000000000004 R12: ffff88808fe5b6e8 R13: 1ffffffffffffff9 R14: ffffffffffffffc8 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffc8 CR3: 000000003c3e3000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ath9k_hif_usb_reg_in_cb+0x189/0x630 drivers/net/wireless/ath/ath9k/hif_usb.c:733 __usb_hcd_giveback_urb+0x375/0x520 drivers/usb/core/hcd.c:1656 dummy_timer+0x808/0x30f0 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers+0x703/0x8f0 kernel/time/timer.c:1734 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747 __do_softirq+0x372/0x783 kernel/softirq.c:558 __irq_exit_rcu+0xcf/0x150 kernel/softirq.c:636 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:132 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline] RIP: 0010:acpi_idle_do_entry drivers/acpi/processor_idle.c:553 [inline] RIP: 0010:acpi_idle_enter+0x42d/0x780 drivers/acpi/processor_idle.c:688 Code: fd 48 83 e3 08 44 8b 7c 24 04 0f 85 0a 01 00 00 48 8d 5c 24 40 e8 63 88 26 fd eb 0c e8 7c 20 20 fd 0f 00 2d b5 64 60 06 fb f4 <9c> 8f 44 24 40 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df RSP: 0018:ffffc90000d57be0 EFLAGS: 00000282 RAX: dce3d30cd2fc5200 RBX: ffffc90000d57c20 RCX: ffff88801238d580 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff8460c95d RBP: ffffc90000d57c90 R08: ffffffff818751f0 R09: ffffed1002471ab1 R10: ffffed1002471ab1 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888142b8c064 R14: ffff888142b8c000 R15: 0000000000000001 cpuidle_enter_state+0x509/0xe60 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x3c8/0x620 kernel/sched/idle.c:306 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403 secondary_startup_64_no_verify+0xb1/0xbb Modules linked in: CR2: ffffffffffffffc8 ---[ end trace 9eb4240e26874e8b ]--- RIP: 0010:ath9k_htc_rxep+0x83/0x1c0 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c:1135 Code: 3c 38 00 74 08 48 89 df e8 ba 5d 5a fc 48 8b 1b 48 39 eb 74 36 4c 8d 73 c8 4d 89 f5 49 c1 ed 03 43 0f b6 44 3d 00 84 c0 75 0d <41> 80 3e 00 74 32 e8 f2 2d 10 fc eb c0 44 89 f1 80 e1 07 38 c1 7c RSP: 0018:ffffc90000dc07c8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000dc06a0 RBP: ffff88808fe5b6d8 R08: dffffc0000000000 R09: 0000000000000003 R10: fffff520001b80d5 R11: 0000000000000004 R12: ffff88808fe5b6e8 R13: 1ffffffffffffff9 R14: ffffffffffffffc8 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffc8 CR3: 000000003c3e3000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 3c 38 cmp $0x38,%al 2: 00 74 08 48 add %dh,0x48(%rax,%rcx,1) 6: 89 df mov %ebx,%edi 8: e8 ba 5d 5a fc callq 0xfc5a5dc7 d: 48 8b 1b mov (%rbx),%rbx 10: 48 39 eb cmp %rbp,%rbx 13: 74 36 je 0x4b 15: 4c 8d 73 c8 lea -0x38(%rbx),%r14 19: 4d 89 f5 mov %r14,%r13 1c: 49 c1 ed 03 shr $0x3,%r13 20: 43 0f b6 44 3d 00 movzbl 0x0(%r13,%r15,1),%eax 26: 84 c0 test %al,%al 28: 75 0d jne 0x37 * 2a: 41 80 3e 00 cmpb $0x0,(%r14) <-- trapping instruction 2e: 74 32 je 0x62 30: e8 f2 2d 10 fc callq 0xfc102e27 35: eb c0 jmp 0xfffffff7 37: 44 89 f1 mov %r14d,%ecx 3a: 80 e1 07 and $0x7,%cl 3d: 38 c1 cmp %al,%cl 3f: 7c .byte 0x7c