BUG: memory leak
unreferenced object 0xffff88803e753f80 (size 96):
  comm "softirq", pid 0, jiffies 4295021413 (age 21.981s)
  hex dump (first 32 bytes):
    01 00 00 00 00 01 02 ff 04 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000027fc9be5>] __skb_ext_alloc+0x19/0x80 net/core/skbuff.c:6224
    [<000000003fb2cca8>] skb_ext_add+0x503/0x670 net/core/skbuff.c:6319
    [<000000008f0547a3>] skb_set_kcov_handle include/linux/skbuff.h:4622 [inline]
    [<000000008f0547a3>] skb_set_kcov_handle include/linux/skbuff.h:4612 [inline]
    [<000000008f0547a3>] __alloc_skb+0x3c1/0x620 net/core/skbuff.c:253
    [<0000000006687381>] skb_copy+0x12b/0x2e0 net/core/skbuff.c:1522
    [<00000000f9fa98b9>] mac80211_hwsim_tx_frame_no_nl.isra.0+0xb3e/0x1370 drivers/net/wireless/mac80211_hwsim.c:1495
    [<00000000aca5095b>] mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1712
    [<000000001678a5a0>] mac80211_hwsim_beacon_tx+0x49d/0x900 drivers/net/wireless/mac80211_hwsim.c:1766
    [<00000000e7694b43>] __iterate_interfaces+0x1f0/0x530 net/mac80211/util.c:792
    [<00000000fadd83fc>] ieee80211_iterate_active_interfaces_atomic+0x72/0x180 net/mac80211/util.c:828
    [<000000000fc2a518>] mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1789
    [<0000000091db56e0>] __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
    [<0000000091db56e0>] __hrtimer_run_queues+0x5e8/0xb50 kernel/time/hrtimer.c:1601
    [<00000000717f4818>] hrtimer_run_softirq+0x148/0x300 kernel/time/hrtimer.c:1618
    [<00000000b2c7a7cc>] __do_softirq+0x1b6/0x86a kernel/softirq.c:298
    [<00000000babdebdc>] asm_call_irq_on_stack+0x12/0x20
    [<0000000007b9a2c0>] __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
    [<0000000007b9a2c0>] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
    [<0000000007b9a2c0>] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77
    [<000000002f69fc8e>] invoke_softirq kernel/softirq.c:393 [inline]
    [<000000002f69fc8e>] __irq_exit_rcu kernel/softirq.c:423 [inline]
    [<000000002f69fc8e>] irq_exit_rcu+0x110/0x1a0 kernel/softirq.c:435

BUG: leak checking failed