2020/08/21 06:16:52 executed programs: 3
BUG: memory leak
unreferenced object 0xffff8881177e7d00 (size 224):
  comm "syz-executor.0", pid 6737, jiffies 4294993672 (age 14.830s)
  hex dump (first 32 bytes):
    a0 1c 09 1c 81 88 ff ff a0 1c 09 1c 81 88 ff ff  ................
    00 80 a8 13 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000005f0bb11>] __build_skb+0x1f/0x100 net/core/skbuff.c:311
    [<000000005f96699b>] __napi_alloc_skb+0xe5/0x140 net/core/skbuff.c:523
    [<00000000c84a3ac3>] napi_alloc_skb include/linux/skbuff.h:2856 [inline]
    [<00000000c84a3ac3>] napi_get_frags net/core/dev.c:6053 [inline]
    [<00000000c84a3ac3>] napi_get_frags+0x3a/0x70 net/core/dev.c:6048
    [<000000007955e5a7>] tun_napi_alloc_frags drivers/net/tun.c:1425 [inline]
    [<000000007955e5a7>] tun_get_user+0xa43/0x1660 drivers/net/tun.c:1789
    [<00000000010cccf6>] tun_chr_write_iter+0x66/0xa0 drivers/net/tun.c:1986
    [<000000008b12337a>] call_write_iter include/linux/fs.h:1882 [inline]
    [<000000008b12337a>] new_sync_write+0x173/0x210 fs/read_write.c:503
    [<00000000b16fae46>] vfs_write+0x21d/0x280 fs/read_write.c:578
    [<000000005cfa1f3f>] ksys_write+0x72/0x120 fs/read_write.c:631
    [<000000007242cdd3>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
    [<000000005dde493d>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff8881177e7e00 (size 224):
  comm "syz-executor.0", pid 6747, jiffies 4294994284 (age 8.710s)
  hex dump (first 32 bytes):
    a0 34 ce 13 81 88 ff ff a0 34 ce 13 81 88 ff ff  .4.......4......
    00 80 d0 12 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000005f0bb11>] __build_skb+0x1f/0x100 net/core/skbuff.c:311
    [<000000005f96699b>] __napi_alloc_skb+0xe5/0x140 net/core/skbuff.c:523
    [<00000000c84a3ac3>] napi_alloc_skb include/linux/skbuff.h:2856 [inline]
    [<00000000c84a3ac3>] napi_get_frags net/core/dev.c:6053 [inline]
    [<00000000c84a3ac3>] napi_get_frags+0x3a/0x70 net/core/dev.c:6048
    [<000000007955e5a7>] tun_napi_alloc_frags drivers/net/tun.c:1425 [inline]
    [<000000007955e5a7>] tun_get_user+0xa43/0x1660 drivers/net/tun.c:1789
    [<00000000010cccf6>] tun_chr_write_iter+0x66/0xa0 drivers/net/tun.c:1986
    [<000000008b12337a>] call_write_iter include/linux/fs.h:1882 [inline]
    [<000000008b12337a>] new_sync_write+0x173/0x210 fs/read_write.c:503
    [<00000000b16fae46>] vfs_write+0x21d/0x280 fs/read_write.c:578
    [<000000005cfa1f3f>] ksys_write+0x72/0x120 fs/read_write.c:631
    [<000000007242cdd3>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
    [<000000005dde493d>] entry_SYSCALL_64_after_hwframe+0x44/0xa9