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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 ffff8881cc774090 by task kworker/1:3/3064

CPU: 1 PID: 3064 Comm: kworker/1:3 Not tainted 5.8.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
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:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline]
RIP: 0010:console_unlock+0xa99/0xcd0 kernel/printk/printk.c:2511
Code: 00 89 ee 48 c7 c7 20 c1 34 87 e8 e2 b7 03 00 65 ff 0d bb cc d8 7e e9 87 f9 ff ff e8 51 2c 16 00 e8 6c b7 1b 00 ff 74 24 30 9d <e9> 20 fe ff ff e8 3d 2c 16 00 48 8d 7d 08 48 89 f8 48 c1 e8 03 42
RSP: 0018:ffff8881ab3d7360 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 1ffffffff1014c62
RDX: 1ffff1103a145747 RSI: 0000000000000000 RDI: ffff8881d0a2ba38
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: fffffbfff12b4ecc R11: 0000000000000000 R12: ffffffff82afb3c0
R13: ffffffff876f2230 R14: 0000000000000091 R15: dffffc0000000000
 vprintk_emit+0x1b2/0x460 kernel/printk/printk.c:2031
 dev_vprintk_emit+0x3eb/0x436 drivers/base/core.c:3883
 dev_printk_emit+0xba/0xf1 drivers/base/core.c:3894
 __dev_printk+0xcf/0xf5 drivers/base/core.c:3906
 _dev_warn+0xd7/0x109 drivers/base/core.c:3950
 usb_parse_interface drivers/usb/core/config.c:593 [inline]
 usb_parse_configuration drivers/usb/core/config.c:795 [inline]
 usb_get_configuration.cold+0xf98/0x15db drivers/usb/core/config.c:944
 usb_enumerate_device drivers/usb/core/hub.c:2387 [inline]
 usb_new_device+0x42c/0x7a0 drivers/usb/core/hub.c:2523
 hub_port_connect drivers/usb/core/hub.c:5208 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5348 [inline]
 port_event drivers/usb/core/hub.c:5494 [inline]
 hub_event+0x2361/0x4390 drivers/usb/core/hub.c:5576
 process_one_work+0x94c/0x15f0 kernel/workqueue.c:2269
 process_scheduled_works kernel/workqueue.c:2331 [inline]
 worker_thread+0x82b/0x1120 kernel/workqueue.c:2417
 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 ffff8881cc773300
 which belongs to the cache names_cache of size 4096
The buggy address is located 3472 bytes inside of
 4096-byte region [ffff8881cc773300, ffff8881cc774300)
The buggy address belongs to the page:
page:ffffea000731dc00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 head:ffffea000731dc00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da120000
raw: 0000000000000000 0000000080070007 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881cc773f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881cc774000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881cc774080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                         ^
 ffff8881cc774100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881cc774180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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