2020/08/27 14:41:42 executed programs: 3
2020/08/27 14:41:48 executed programs: 5
BUG: memory leak
unreferenced object 0xffff88811324fd00 (size 224):
  comm "syz-executor.0", pid 6743, jiffies 4294993840 (age 18.400s)
  hex dump (first 32 bytes):
    a0 ec 09 13 81 88 ff ff a0 ec 09 13 81 88 ff ff  ................
    00 40 2e 13 81 88 ff ff 00 00 00 00 00 00 00 00  .@..............
  backtrace:
    [<000000002376aa4b>] __build_skb+0x1f/0x100 net/core/skbuff.c:311
    [<00000000f2d6617f>] __napi_alloc_skb+0xe5/0x140 net/core/skbuff.c:523
    [<00000000ea64bec6>] napi_alloc_skb include/linux/skbuff.h:2856 [inline]
    [<00000000ea64bec6>] napi_get_frags net/core/dev.c:6053 [inline]
    [<00000000ea64bec6>] napi_get_frags+0x3a/0x70 net/core/dev.c:6048
    [<0000000016172525>] tun_napi_alloc_frags drivers/net/tun.c:1425 [inline]
    [<0000000016172525>] tun_get_user+0xa43/0x1660 drivers/net/tun.c:1789
    [<0000000097959d6d>] tun_chr_write_iter+0x66/0xa0 drivers/net/tun.c:1986
    [<00000000356deaaf>] call_write_iter include/linux/fs.h:1882 [inline]
    [<00000000356deaaf>] new_sync_write+0x173/0x210 fs/read_write.c:503
    [<00000000f434eeae>] __kernel_write+0x140/0x1f0 fs/read_write.c:530
    [<00000000ff1a18eb>] write_pipe_buf+0x61/0x80 fs/splice.c:799
    [<00000000c15bfc1d>] splice_from_pipe_feed fs/splice.c:502 [inline]
    [<00000000c15bfc1d>] __splice_from_pipe+0x154/0x290 fs/splice.c:626
    [<00000000b9b0a894>] splice_from_pipe fs/splice.c:661 [inline]
    [<00000000b9b0a894>] default_file_splice_write fs/splice.c:811 [inline]
    [<00000000b9b0a894>] do_splice_from fs/splice.c:847 [inline]
    [<00000000b9b0a894>] do_splice+0x772/0x8d0 fs/splice.c:1144
    [<00000000c3b39cb6>] __do_sys_splice fs/splice.c:1419 [inline]
    [<00000000c3b39cb6>] __se_sys_splice fs/splice.c:1401 [inline]
    [<00000000c3b39cb6>] __x64_sys_splice+0xaa/0x110 fs/splice.c:1401
    [<00000000deccd7b6>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
    [<0000000012979010>] entry_SYSCALL_64_after_hwframe+0x44/0xa9