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BUG: KASAN: stack-out-of-bounds in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:626 [inline]
BUG: KASAN: stack-out-of-bounds in ath9k_hif_usb_rx_cb+0xe11/0xf90 drivers/net/wireless/ath/ath9k/hif_usb.c:666
Write of size 8 at addr ffff8881db309a08 by task syz-executor.0/13447

CPU: 1 PID: 13447 Comm: syz-executor.0 Not tainted 5.7.0-rc5-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+0xef/0x16e lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x314 mm/kasan/report.c:382
 __kasan_report.cold+0x37/0x92 mm/kasan/report.c:511
 kasan_report+0x33/0x50 mm/kasan/common.c:625
 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:626 [inline]
 ath9k_hif_usb_rx_cb+0xe11/0xf90 drivers/net/wireless/ath/ath9k/hif_usb.c:666
 __usb_hcd_giveback_urb+0x1f2/0x470 drivers/usb/core/hcd.c:1648
 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1713
 dummy_timer+0x125e/0x32b4 drivers/usb/gadget/udc/dummy_hcd.c:1966
 call_timer_fn+0x1ac/0x700 kernel/time/timer.c:1405
 expire_timers kernel/time/timer.c:1450 [inline]
 __run_timers kernel/time/timer.c:1774 [inline]
 __run_timers kernel/time/timer.c:1741 [inline]
 run_timer_softirq+0x5f9/0x1500 kernel/time/timer.c:1787
 __do_softirq+0x21e/0x9aa kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x178/0x1a0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:546 [inline]
 smp_apic_timer_interrupt+0x141/0x540 arch/x86/kernel/apic/apic.c:1140
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:rcu_read_lock_sched_held+0x4e/0xd0 kernel/rcu/update.c:116
Code: 8d 7c 24 20 48 c1 eb 03 48 c7 44 24 10 90 70 2d 81 48 01 d8 c7 00 f1 f1 f1 f1 c7 40 04 01 f3 f3 f3 65 48 8b 04 25 28 00 00 00 <48> 89 44 24 58 31 c0 e8 86 fd ff ff 84 c0 74 2d 0f b6 44 24 20 48
RSP: 0018:ffff8881d23d7360 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 5b5891ebb5480400 RBX: 1ffff1103a47ae6c RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff8881d23d7380
RBP: 0000000000000001 R08: ffff8881d23d7420 R09: fffffbfff0fd11d1
R10: ffffffff87e88e87 R11: fffffbfff0fd11d0 R12: 0000000000000000
R13: 0000000000000000 R14: ffffea0006924c00 R15: 0000000000100dca
 trace_mm_page_alloc include/trace/events/kmem.h:193 [inline]
 __alloc_pages_nodemask+0x5d8/0x7a0 mm/page_alloc.c:4840
 alloc_pages_vma+0x1b0/0x3e0 mm/mempolicy.c:2258
 alloc_zeroed_user_highpage_movable include/linux/highmem.h:208 [inline]
 wp_page_copy+0xf07/0x1fd0 mm/memory.c:2657
 do_wp_page+0x2cd/0x1af0 mm/memory.c:2982
 handle_pte_fault mm/memory.c:4231 [inline]
 __handle_mm_fault+0x16e5/0x2da0 mm/memory.c:4345
 handle_mm_fault+0x2ec/0x8d0 mm/memory.c:4382
 do_user_addr_fault arch/x86/mm/fault.c:1464 [inline]
 do_page_fault+0x51e/0x127d arch/x86/mm/fault.c:1535
 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1203
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x30 arch/x86/lib/copy_user_64.S:205
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 <f3> a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 f3 a4
RSP: 0018:ffff8881d23d79f0 EFLAGS: 00010206
RAX: 0000000000000001 RBX: 0000000000001000 RCX: 0000000000000280
RDX: 0000000000001000 RSI: ffff8881a4355d80 RDI: 0000000020792000
RBP: 0000000020791280 R08: ffffed103486ac00 R09: 0000000000000000
R10: ffff8881a4355fff R11: ffffed103486abff R12: ffff8881a4355000
R13: 0000000020792280 R14: 00007ffffffff000 R15: 0000000000000000
 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:74 [inline]
 copyout+0x107/0x140 lib/iov_iter.c:142
 copy_page_to_iter_iovec lib/iov_iter.c:211 [inline]
 copy_page_to_iter+0x447/0xed0 lib/iov_iter.c:920
 generic_file_buffered_read mm/filemap.c:2129 [inline]
 generic_file_read_iter+0xfef/0x2a20 mm/filemap.c:2309
 ext4_file_read_iter fs/ext4/file.c:131 [inline]
 ext4_file_read_iter+0x181/0x430 fs/ext4/file.c:114
 call_read_iter include/linux/fs.h:1901 [inline]
 new_sync_read+0x41e/0x6d0 fs/read_write.c:415
 __vfs_read+0xc9/0x100 fs/read_write.c:428
 vfs_read+0x1f0/0x420 fs/read_write.c:462
 ksys_read+0x12d/0x250 fs/read_write.c:588
 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45ca29
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f2060fd8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00000000004faf00 RCX: 000000000045ca29
RDX: 00000000cfc7f929 RSI: 0000000020003280 RDI: 0000000000000007
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000883 R14: 00000000004cb5aa R15: 00007f2060fd96d4

The buggy address belongs to the page:
page:ffffea00076cc240 refcount:1 mapcount:0 mapping:0000000044243d72 index:0x0
flags: 0x200000000001000(reserved)
raw: 0200000000001000 ffffea00076cc248 ffffea00076cc248 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881db309900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881db309980: 00 f1 f1 f1 f1 f1 f1 00 00 00 00 00 00 00 00 00
>ffff8881db309a00: 00 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00
                      ^
 ffff8881db309a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881db309b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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