BUG: memory leak
unreferenced object 0xffff88805d88d000 (size 96):
  comm "syz-executor.2", pid 74875, jiffies 4294915499 (age 344.843s)
  hex dump (first 32 bytes):
    01 00 00 00 00 01 02 ff 03 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000077d6ab4e>] __skb_ext_alloc+0x19/0x80 net/core/skbuff.c:6224
    [<00000000868f9d76>] skb_ext_add+0x503/0x670 net/core/skbuff.c:6319
    [<000000004d0684de>] skb_set_kcov_handle include/linux/skbuff.h:4622 [inline]
    [<000000004d0684de>] skb_set_kcov_handle include/linux/skbuff.h:4612 [inline]
    [<000000004d0684de>] __alloc_skb+0x3c1/0x620 net/core/skbuff.c:253
    [<00000000dc15ff52>] __pskb_copy_fclone+0xec/0xc90 net/core/skbuff.c:1562
    [<000000004d11a649>] __pskb_copy include/linux/skbuff.h:1158 [inline]
    [<000000004d11a649>] pskb_copy include/linux/skbuff.h:3124 [inline]
    [<000000004d11a649>] hwsim_hw_xmit+0x381/0x6b0 drivers/net/ieee802154/mac802154_hwsim.c:132
    [<0000000090a4e827>] drv_xmit_async net/mac802154/driver-ops.h:16 [inline]
    [<0000000090a4e827>] ieee802154_tx+0x2ab/0x470 net/mac802154/tx.c:83
    [<00000000316f801d>] ieee802154_subif_start_xmit+0xbe/0xf0 net/mac802154/tx.c:132
    [<000000000c882a79>] __netdev_start_xmit include/linux/netdevice.h:4772 [inline]
    [<000000000c882a79>] netdev_start_xmit include/linux/netdevice.h:4786 [inline]
    [<000000000c882a79>] xmit_one net/core/dev.c:3576 [inline]
    [<000000000c882a79>] dev_hard_start_xmit+0x1ba/0x800 net/core/dev.c:3592
    [<000000000926d974>] sch_direct_xmit+0x262/0x770 net/sched/sch_generic.c:336
    [<00000000fe5998bf>] qdisc_restart net/sched/sch_generic.c:401 [inline]
    [<00000000fe5998bf>] __qdisc_run+0x4b3/0x1630 net/sched/sch_generic.c:409
    [<000000002b97d02e>] qdisc_run include/net/pkt_sched.h:126 [inline]
    [<000000002b97d02e>] qdisc_run include/net/pkt_sched.h:123 [inline]
    [<000000002b97d02e>] __dev_xmit_skb net/core/dev.c:3768 [inline]
    [<000000002b97d02e>] __dev_queue_xmit+0xd9a/0x27f0 net/core/dev.c:4122
    [<0000000003a36654>] dgram_sendmsg+0x93a/0xc50 net/ieee802154/socket.c:682
    [<00000000da28bf7c>] sock_sendmsg_nosec net/socket.c:651 [inline]
    [<00000000da28bf7c>] sock_sendmsg+0x150/0x190 net/socket.c:671
    [<000000005b27de3b>] ____sys_sendmsg+0x32e/0x860 net/socket.c:2340
    [<000000001da4bc77>] ___sys_sendmsg+0xff/0x170 net/socket.c:2394
    [<0000000070cdc812>] __sys_sendmmsg+0x192/0x460 net/socket.c:2484

BUG: leak checking failed