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BUG: KASAN: use-after-free in memcpy include/linux/string.h:406 [inline]
BUG: KASAN: use-after-free in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:553 [inline]
BUG: KASAN: use-after-free in ath9k_hif_usb_rx_cb+0x3a8/0xf80 drivers/net/wireless/ath/ath9k/hif_usb.c:671
Read of size 49279 at addr ffff8881cd0f0000 by task swapper/1/0

CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-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
 print_address_description.constprop.0+0x1c/0x210 mm/kasan/report.c:383
 __kasan_report mm/kasan/report.c:513 [inline]
 kasan_report.cold+0x37/0x7c mm/kasan/report.c:530
 check_memory_region_inline mm/kasan/generic.c:186 [inline]
 check_memory_region+0xf4/0x1c0 mm/kasan/generic.c:192
 memcpy+0x20/0x60 mm/kasan/common.c:105
 memcpy include/linux/string.h:406 [inline]
 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:553 [inline]
 ath9k_hif_usb_rx_cb+0x3a8/0xf80 drivers/net/wireless/ath/ath9k/hif_usb.c:671
 __usb_hcd_giveback_urb+0x32d/0x560 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1716
 dummy_timer+0x11f2/0x3240 drivers/usb/gadget/udc/dummy_hcd.c:1967
 call_timer_fn+0x1ac/0x6e0 kernel/time/timer.c:1413
 expire_timers kernel/time/timer.c:1458 [inline]
 __run_timers.part.0+0x67c/0xa60 kernel/time/timer.c:1755
 __run_timers kernel/time/timer.c:1736 [inline]
 run_timer_softirq+0x80/0x120 kernel/time/timer.c:1768
 __do_softirq+0x1af/0x91c kernel/softirq.c:298
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706
 </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+0x73/0x90 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:393 [inline]
 __irq_exit_rcu kernel/softirq.c:423 [inline]
 irq_exit_rcu+0x107/0x1a0 kernel/softirq.c:435
 sysvec_apic_timer_interrupt+0x43/0x90 arch/x86/kernel/apic/apic.c:1090
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581
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+0x72/0x90 drivers/acpi/processor_idle.c:112
Code: 74 06 5b e9 d0 a3 8b fb e8 cb a3 8b fb e8 26 41 91 fb e9 0c 00 00 00 e8 bc a3 8b fb 0f 00 2d 95 5e 70 00 e8 b0 a3 8b fb fb f4 <fa> e8 18 3b 91 fb 5b e9 a2 a3 8b fb 48 89 df e8 da 76 b5 fb eb ab
RSP: 0018:ffff8881da267ca8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffffffff1015a29
RDX: ffff8881da24b200 RSI: ffffffff85b45d30 RDI: ffffffff85b45d1a
RBP: ffff8881d8d7a064 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffff8881d8d7a064
R13: 1ffff1103b44cf9e R14: ffff8881d8d7a065 R15: 0000000000000001
 acpi_idle_do_entry+0x15c/0x1b0 drivers/acpi/processor_idle.c:524
 acpi_idle_enter+0x3fa/0xa50 drivers/acpi/processor_idle.c:650
 cpuidle_enter_state+0xff/0x870 drivers/cpuidle/cpuidle.c:235
 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:346
 call_cpuidle kernel/sched/idle.c:126 [inline]
 cpuidle_idle_call kernel/sched/idle.c:214 [inline]
 do_idle+0x3d6/0x5a0 kernel/sched/idle.c:276
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:372
 start_secondary+0x25b/0x320 arch/x86/kernel/smpboot.c:266
 secondary_startup_64+0xb6/0xc0 arch/x86/kernel/head_64.S:243

The buggy address belongs to the page:
page:00000000ae11d396 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1cd0f0
head:00000000ae11d396 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x200000000010000(head)
raw: 0200000000010000 dead000000000100 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881cd0f7f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881cd0f7f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881cd0f8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff8881cd0f8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881cd0f8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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