syzbot has found a reproducer for the following crash on: HEAD commit: f8f02d5c USB: OTG: rename product list of devices git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=15fd18a5100000 kernel config: https://syzkaller.appspot.com/x/.config?x=f1981539b6376b73 dashboard link: https://syzkaller.appspot.com/bug?extid=4d2d56175b934b9a7bf9 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14519481100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=110318e9100000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+4d2d56175b934b9a7bf9@xxxxxxxxxxxxxxxxxxxxxxxxx INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xf6/0x16e lib/dump_stack.c:118 assign_lock_key kernel/locking/lockdep.c:894 [inline] register_lock_class+0x1228/0x16d0 kernel/locking/lockdep.c:1206 __lock_acquire+0x101/0x6270 kernel/locking/lockdep.c:4259 lock_acquire+0x18b/0x7c0 kernel/locking/lockdep.c:4959 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 ath9k_htc_rxep+0x31/0x210 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c:1128 ath9k_htc_rx_msg+0x2d9/0xb00 drivers/net/wireless/ath/ath9k/htc_hst.c:459 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:638 [inline] ath9k_hif_usb_rx_cb+0xc76/0x1050 drivers/net/wireless/ath/ath9k/hif_usb.c:671 __usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716 dummy_timer+0x125e/0x32b4 drivers/usb/gadget/udc/dummy_hcd.c:1967 call_timer_fn+0x1ac/0x6e0 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x5e5/0x14c0 kernel/time/timer.c:1786 __do_softirq+0x21e/0x996 kernel/softirq.c:292 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 </IRQ> __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0x109/0x140 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:387 [inline] __irq_exit_rcu kernel/softirq.c:417 [inline] irq_exit_rcu+0x16f/0x1a0 kernel/softirq.c:429 sysvec_apic_timer_interrupt+0xd3/0x1b0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:49 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:89 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline] RIP: 0010:acpi_safe_halt+0x72/0x90 drivers/acpi/processor_idle.c:108 Code: 74 06 5b e9 c0 32 9f fb e8 bb 32 9f fb e8 c6 96 a4 fb e9 0c 00 00 00 e8 ac 32 9f fb 0f 00 2d 45 6e 84 00 e8 a0 32 9f fb fb f4 <fa> e8 b8 94 a4 fb 5b e9 92 32 9f fb 48 89 df e8 7a e1 c8 fb eb ab RSP: 0018:ffff8881da22fc60 EFLAGS: 00000293 RAX: ffff8881da213200 RBX: 0000000000000000 RCX: 1ffffffff1014efa RDX: 0000000000000000 RSI: ffffffff85a03aa0 RDI: ffff8881da213a38 RBP: ffff8881d8d2a864 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d8d2a864 R13: 1ffff1103b445f96 R14: ffff8881d8d2a865 R15: 0000000000000001 acpi_idle_do_entry+0xa9/0xe0 drivers/acpi/processor_idle.c:525 acpi_idle_enter+0x42b/0xac0 drivers/acpi/processor_idle.c:651 cpuidle_enter_state+0xdb/0xc20 drivers/cpuidle/cpuidle.c:234 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:345 call_cpuidle kernel/sched/idle.c:117 [inline] cpuidle_idle_call kernel/sched/idle.c:207 [inline] do_idle+0x3c2/0x500 kernel/sched/idle.c:269 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:365 start_secondary+0x294/0x370 arch/x86/kernel/smpboot.c:268 secondary_startup_64+0xb6/0xc0 arch/x86/kernel/head_64.S:243 BUG: unable to handle page fault for address: ffffffffffffffc8 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 7226067 P4D 7226067 PUD 7228067 PMD 0 Oops: 0000 [#1] SMP KASAN CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ath9k_htc_rxep+0xb5/0x210 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c:1130 Code: 8b 43 38 48 8d 58 c8 49 39 c4 0f 84 ee 00 00 00 e8 70 56 62 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 ad 57 62 fe 45 84 ff 75 a8 e8 43 56 RSP: 0018:ffff8881db3098b0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffffffffffffffc8 RCX: ffffffff81274370 RDX: 0000000000000000 RSI: ffffffff82dd16d0 RDI: ffff8881db309820 RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffed103b661305 R10: 0000000000000003 R11: ffffed103b661304 R12: ffff8881cd69b538 R13: ffff8881cd69b100 R14: ffff8881cd69b548 R15: ffffed10392ce210 FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffc8 CR3: 00000001cf9f6000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> ath9k_htc_rx_msg+0x2d9/0xb00 drivers/net/wireless/ath/ath9k/htc_hst.c:459 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:638 [inline] ath9k_hif_usb_rx_cb+0xc76/0x1050 drivers/net/wireless/ath/ath9k/hif_usb.c:671 __usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716 dummy_timer+0x125e/0x32b4 drivers/usb/gadget/udc/dummy_hcd.c:1967 call_timer_fn+0x1ac/0x6e0 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x5e5/0x14c0 kernel/time/timer.c:1786 __do_softirq+0x21e/0x996 kernel/softirq.c:292 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 </IRQ> __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0x109/0x140 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:387 [inline] __irq_exit_rcu kernel/softirq.c:417 [inline] irq_exit_rcu+0x16f/0x1a0 kernel/softirq.c:429 sysvec_apic_timer_interrupt+0xd3/0x1b0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:49 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:89 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline] RIP: 0010:acpi_safe_halt+0x72/0x90 drivers/acpi/processor_idle.c:108 Code: 74 06 5b e9 c0 32 9f fb e8 bb 32 9f fb e8 c6 96 a4 fb e9 0c 00 00 00 e8 ac 32 9f fb 0f 00 2d 45 6e 84 00 e8 a0 32 9f fb fb f4 <fa> e8 b8 94 a4 fb 5b e9 92 32 9f fb 48 89 df e8 7a e1 c8 fb eb ab RSP: 0018:ffff8881da22fc60 EFLAGS: 00000293 RAX: ffff8881da213200 RBX: 0000000000000000 RCX: 1ffffffff1014efa RDX: 0000000000000000 RSI: ffffffff85a03aa0 RDI: ffff8881da213a38 RBP: ffff8881d8d2a864 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d8d2a864 R13: 1ffff1103b445f96 R14: ffff8881d8d2a865 R15: 0000000000000001 acpi_idle_do_entry+0xa9/0xe0 drivers/acpi/processor_idle.c:525 acpi_idle_enter+0x42b/0xac0 drivers/acpi/processor_idle.c:651 cpuidle_enter_state+0xdb/0xc20 drivers/cpuidle/cpuidle.c:234 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:345 call_cpuidle kernel/sched/idle.c:117 [inline] cpuidle_idle_call kernel/sched/idle.c:207 [inline] do_idle+0x3c2/0x500 kernel/sched/idle.c:269 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:365 start_secondary+0x294/0x370 arch/x86/kernel/smpboot.c:268 secondary_startup_64+0xb6/0xc0 arch/x86/kernel/head_64.S:243 Modules linked in: CR2: ffffffffffffffc8 ---[ end trace 5a637b710bbf1999 ]--- RIP: 0010:ath9k_htc_rxep+0xb5/0x210 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c:1130 Code: 8b 43 38 48 8d 58 c8 49 39 c4 0f 84 ee 00 00 00 e8 70 56 62 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 ad 57 62 fe 45 84 ff 75 a8 e8 43 56 RSP: 0018:ffff8881db3098b0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffffffffffffffc8 RCX: ffffffff81274370 RDX: 0000000000000000 RSI: ffffffff82dd16d0 RDI: ffff8881db309820 RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffed103b661305 R10: 0000000000000003 R11: ffffed103b661304 R12: ffff8881cd69b538 R13: ffff8881cd69b100 R14: ffff8881cd69b548 R15: ffffed10392ce210 FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffc8 CR3: 00000001cf9f6000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
