executing program
executing program
BUG: memory leak
unreferenced object 0xffff88811a757300 (size 224):
  comm "syz-executor248", pid 6487, jiffies 4294943252 (age 14.030s)
  hex dump (first 32 bytes):
    a0 9c 69 1c 81 88 ff ff a0 9c 69 1c 81 88 ff ff  ..i.......i.....
    00 c0 5d 18 81 88 ff ff 00 00 00 00 00 00 00 00  ..].............
  backtrace:
    [<00000000746234dd>] __build_skb+0x1f/0x100 net/core/skbuff.c:311
    [<000000006aebf488>] __napi_alloc_skb+0xe5/0x140 net/core/skbuff.c:523
    [<000000005ffed00f>] napi_alloc_skb include/linux/skbuff.h:2865 [inline]
    [<000000005ffed00f>] napi_get_frags net/core/dev.c:6053 [inline]
    [<000000005ffed00f>] napi_get_frags+0x3a/0x70 net/core/dev.c:6048
    [<000000000f7b834c>] tun_napi_alloc_frags drivers/net/tun.c:1425 [inline]
    [<000000000f7b834c>] tun_get_user+0xa43/0x1660 drivers/net/tun.c:1789
    [<000000006b87a140>] tun_chr_write_iter+0x66/0xa0 drivers/net/tun.c:1986
    [<00000000d8893d53>] call_write_iter include/linux/fs.h:1882 [inline]
    [<00000000d8893d53>] new_sync_write+0x173/0x210 fs/read_write.c:503
    [<00000000e5517826>] __kernel_write+0x140/0x1f0 fs/read_write.c:530
    [<00000000767c0fd4>] write_pipe_buf+0x61/0x80 fs/splice.c:799
    [<00000000b4691bac>] splice_from_pipe_feed fs/splice.c:502 [inline]
    [<00000000b4691bac>] __splice_from_pipe+0x154/0x290 fs/splice.c:626
    [<000000004a5906c5>] splice_from_pipe fs/splice.c:661 [inline]
    [<000000004a5906c5>] default_file_splice_write fs/splice.c:811 [inline]
    [<000000004a5906c5>] do_splice_from fs/splice.c:847 [inline]
    [<000000004a5906c5>] do_splice+0x772/0x8d0 fs/splice.c:1144
    [<0000000066fdff60>] __do_sys_splice fs/splice.c:1419 [inline]
    [<0000000066fdff60>] __se_sys_splice fs/splice.c:1401 [inline]
    [<0000000066fdff60>] __x64_sys_splice+0xaa/0x110 fs/splice.c:1401
    [<000000000416058b>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
    [<00000000595bf1ea>] entry_SYSCALL_64_after_hwframe+0x44/0xa9