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BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:627 [inline]
BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_cb+0xd7d/0xf80 drivers/net/wireless/ath/ath9k/hif_usb.c:671
Read of size 4 at addr ffff8881ab0a4090 by task kworker/0:7/3152

CPU: 0 PID: 3152 Comm: kworker/0:7 Not tainted 5.8.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient gc_worker
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+0x1a/0x210 mm/kasan/report.c:383
 __kasan_report mm/kasan/report.c:513 [inline]
 kasan_report.cold+0x37/0x7c mm/kasan/report.c:530
 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:627 [inline]
 ath9k_hif_usb_rx_cb+0xd7d/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:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers.part.0+0x54c/0x9e0 kernel/time/timer.c:1773
 __run_timers kernel/time/timer.c:1745 [inline]
 run_timer_softirq+0x80/0x120 kernel/time/timer.c:1786
 __do_softirq+0x222/0x95b 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+0xed/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+0x150/0x1f0 kernel/softirq.c:429
 sysvec_apic_timer_interrupt+0x115/0x1c0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596
RIP: 0010:lock_acquire+0x1c/0x940 kernel/locking/lockdep.c:4931
Code: 63 0a 88 e8 36 a9 42 00 e9 4d fd ff ff 90 41 57 41 56 41 89 d6 48 ba 00 00 00 00 00 fc ff df 41 55 49 89 fd 41 54 41 89 cc 55 <89> f5 53 44 89 c3 48 81 ec c0 00 00 00 48 8d 44 24 20 4c 89 0c 24
RSP: 0018:ffff8881cbcbfc60 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 000000000000019f RCX: 0000000000000002
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff8730f960
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000200 R11: 0000000000000000 R12: 0000000000000002
R13: ffffffff8730f960 R14: 0000000000000000 R15: 0000000000000200
 rcu_lock_acquire include/linux/rcupdate.h:241 [inline]
 rcu_read_lock include/linux/rcupdate.h:634 [inline]
 gc_worker+0x13c/0xc20 net/netfilter/nf_conntrack_core.c:1383
 process_one_work+0x94c/0x15f0 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x392/0x470 kernel/kthread.c:291
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293

Allocated by task 0:
(stack is not available)

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8881ab0a3200
 which belongs to the cache task_struct of size 6144
The buggy address is located 3728 bytes inside of
 6144-byte region [ffff8881ab0a3200, ffff8881ab0a4a00)
The buggy address belongs to the page:
page:ffffea0006ac2800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 head:ffffea0006ac2800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da11a000
raw: 0000000000000000 0000000080050005 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881ab0a3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881ab0a4000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881ab0a4080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                         ^
 ffff8881ab0a4100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881ab0a4180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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