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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 48828 at addr ffff8881ccda8000 by task swapper/0/0

CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.9.0-rc8-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+0x107/0x16e 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/0x92c kernel/softirq.c:298
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x71/0x90 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+0x110/0x1a0 kernel/softirq.c:435
 sysvec_apic_timer_interrupt+0x43/0x90 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581
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:79 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:169 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline]
RIP: 0010:acpi_idle_do_entry+0x1c9/0x250 drivers/acpi/processor_idle.c:517
Code: 4d 5c 88 fb 84 db 75 ac e8 d4 63 88 fb e8 7f 01 8e fb e9 0c 00 00 00 e8 c5 63 88 fb 0f 00 2d 5e 1c 6d 00 e8 b9 63 88 fb fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 74 5c 88 fb 48 85 db
RSP: 0018:ffffffff87207d68 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffffffff1016c01
RDX: ffffffff8722f240 RSI: ffffffff85b7ae07 RDI: ffffffff85b7adf1
RBP: ffff8881d8d52064 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: ffff8881d8d52000 R14: ffff8881d8d52064 R15: ffff8881d6f30004
 acpi_idle_enter+0x337/0x490 drivers/acpi/processor_idle.c:648
 cpuidle_enter_state+0x19e/0xa10 drivers/cpuidle/cpuidle.c:237
 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:350
 call_cpuidle kernel/sched/idle.c:132 [inline]
 cpuidle_idle_call kernel/sched/idle.c:213 [inline]
 do_idle+0x3d5/0x580 kernel/sched/idle.c:273
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:369
 start_kernel+0x495/0x4b6 init/main.c:1049
 secondary_startup_64+0xb6/0xc0 arch/x86/kernel/head_64.S:243

The buggy address belongs to the page:
page:0000000014c9552e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ccda8
head:0000000014c9552e 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:
 ffff8881ccdaff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881ccdaff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881ccdb0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff8881ccdb0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881ccdb0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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