Warning: Permanently added '10.128.0.240' (ECDSA) to the list of known hosts.
syzkaller login: [   58.047682][   T24] audit: type=1400 audit(1599950371.444:8): avc:  denied  { execmem } for  pid=6455 comm="syz-executor789" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
executing program
[   72.198909][ T3674] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
executing program
executing program
[   78.913103][ T6455] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[   85.241751][ T6455] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff888119dc4c00 (size 224):
  comm "syz-executor789", pid 6500, jiffies 4294944505 (age 13.010s)
  hex dump (first 32 bytes):
    a0 bc 54 19 81 88 ff ff a0 bc 54 19 81 88 ff ff  ..T.......T.....
    00 80 00 18 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000009adb785>] __build_skb+0x1f/0x100
    [<00000000b1dd6743>] __napi_alloc_skb+0xe5/0x140
    [<00000000a746534a>] napi_get_frags+0x3a/0x70
    [<00000000738bec16>] tun_get_user+0xa43/0x1660
    [<000000002da5decf>] tun_chr_write_iter+0x66/0xa0
    [<000000005e864445>] new_sync_write+0x173/0x210
    [<0000000086f5abb2>] __kernel_write+0x140/0x1f0
    [<00000000dae098ef>] write_pipe_buf+0x61/0x80
    [<00000000456727cc>] __splice_from_pipe+0x154/0x290
    [<000000003563fe71>] do_splice+0x772/0x8d0
    [<00000000eca3ce1e>] __x64_sys_splice+0xaa/0x110
    [<000000008e412d78>] do_syscall_64+0x2d/0x70
    [<000000001a024c16>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888119dc4900 (size 224):
  comm "syz-executor789", pid 6545, jiffies 4294945048 (age 7.580s)
  hex dump (first 32 bytes):
    a0 34 ed 19 81 88 ff ff a0 34 ed 19 81 88 ff ff  .4.......4......
    00 80 00 18 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000009adb785>] __build_skb+0x1f/0x100
    [<00000000b1dd6743>] __napi_alloc_skb+0xe5/0x140
    [<00000000a746534a>] napi_get_frags+0x3a/0x70
    [<00000000738bec16>] tun_get_user+0xa43/0x1660
    [<000000002da5decf>] tun_chr_write_iter+0x66/0xa0
    [<000000005e864445>] new_sync_write+0x173/0x210
    [<0000000086f5abb2>] __kernel_write+0x140/0x1f0
    [<00000000dae098ef>] write_pipe_buf+0x61/0x80
    [<00000000456727cc>] __splice_from_pipe+0x154/0x290
    [<000000003563fe71>] do_splice+0x772/0x8d0
    [<00000000eca3ce1e>] __x64_sys_splice+0xaa/0x110
    [<000000008e412d78>] do_syscall_64+0x2d/0x70
    [<000000001a024c16>] entry_SYSCALL_64_after_hwframe+0x44/0xa9