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BUG: KASAN: out-of-bounds in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:636 [inline]
BUG: KASAN: out-of-bounds in ath9k_hif_usb_rx_cb+0xdd8/0x1050 drivers/net/wireless/ath/ath9k/hif_usb.c:680
Read of size 4 at addr ffff88810c8e4178 by task swapper/1/0

CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.12.0-rc6-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:79 [inline]
 dump_stack+0x143/0x1db lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:232
 __kasan_report mm/kasan/report.c:399 [inline]
 kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:416
 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:636 [inline]
 ath9k_hif_usb_rx_cb+0xdd8/0x1050 drivers/net/wireless/ath/ath9k/hif_usb.c:680
 __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+0x11f4/0x32a0 drivers/usb/gadget/udc/dummy_hcd.c:1971
 call_timer_fn+0x1a5/0x630 kernel/time/timer.c:1431
 expire_timers kernel/time/timer.c:1476 [inline]
 __run_timers.part.0+0x67c/0xa10 kernel/time/timer.c:1745
 __run_timers kernel/time/timer.c:1726 [inline]
 run_timer_softirq+0x80/0x120 kernel/time/timer.c:1758
 __do_softirq+0x1b0/0x944 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu kernel/softirq.c:422 [inline]
 irq_exit_rcu+0x110/0x1a0 kernel/softirq.c:434
 sysvec_apic_timer_interrupt+0x6a/0x90 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
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:137 [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: 6d fc 8e fb 84 db 75 ac e8 c4 f5 8e fb e8 4f cd 94 fb e9 0c 00 00 00 e8 b5 f5 8e fb 0f 00 2d 6e 0b 77 00 e8 a9 f5 8e fb fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 a4 fd 8e fb 48 85 db
RSP: 0018:ffffc900000dfd18 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8881002d0000 RSI: ffffffff85b16c97 RDI: ffffffff85b16c81
RBP: ffff888103e78864 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff81463a08 R11: 0000000000000000 R12: 0000000000000001
R13: ffff888103e78800 R14: ffff888103e78864 R15: ffff8881054be804
 acpi_idle_enter+0x355/0x4f0 drivers/acpi/processor_idle.c:654
 cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237
 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351
 call_cpuidle kernel/sched/idle.c:158 [inline]
 cpuidle_idle_call kernel/sched/idle.c:239 [inline]
 do_idle+0x3d5/0x580 kernel/sched/idle.c:300
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:397
 start_secondary+0x273/0x350 arch/x86/kernel/smpboot.c:272
 secondary_startup_64_no_verify+0xb0/0xbb

The buggy address belongs to the page:
page:ffffea0004323900 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10c8e4
flags: 0x200000000000000()
raw: 0200000000000000 dead000000000100 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88810c8e4000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88810c8e4080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88810c8e4100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                                ^
 ffff88810c8e4180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88810c8e4200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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