executing program
BUG: memory leak
unreferenced object 0xffff888119bb9c00 (size 224):
  comm "syz-executor701", pid 6526, jiffies 4294943785 (age 8.770s)
  hex dump (first 32 bytes):
    a0 14 5a 1c 81 88 ff ff a0 14 5a 1c 81 88 ff ff  ..Z.......Z.....
    00 c0 04 17 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000b22e4123>] __build_skb+0x1f/0x100 net/core/skbuff.c:311
    [<000000000dd118aa>] __napi_alloc_skb+0xe5/0x140 net/core/skbuff.c:523
    [<00000000e2a6e1c5>] napi_alloc_skb include/linux/skbuff.h:2865 [inline]
    [<00000000e2a6e1c5>] napi_get_frags net/core/dev.c:6053 [inline]
    [<00000000e2a6e1c5>] napi_get_frags+0x3a/0x70 net/core/dev.c:6048
    [<0000000035b6aaa5>] tun_napi_alloc_frags drivers/net/tun.c:1425 [inline]
    [<0000000035b6aaa5>] tun_get_user+0xa43/0x1660 drivers/net/tun.c:1789
    [<0000000029605ba5>] tun_chr_write_iter+0x66/0xa0 drivers/net/tun.c:1986
    [<0000000064bb9aba>] call_write_iter include/linux/fs.h:1882 [inline]
    [<0000000064bb9aba>] new_sync_write+0x173/0x210 fs/read_write.c:503
    [<0000000012341000>] vfs_write+0x21d/0x280 fs/read_write.c:578
    [<00000000a69641ba>] ksys_write+0x72/0x120 fs/read_write.c:631
    [<0000000073bde20b>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
    [<00000000c9cee68a>] entry_SYSCALL_64_after_hwframe+0x44/0xa9