[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.10.48' (ECDSA) to the list of known hosts.
syzkaller login: [   62.600513][   T25] audit: type=1400 audit(1599062366.776:8): avc:  denied  { execmem } for  pid=6474 comm="syz-executor960" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
executing program
executing program
executing program
executing program
executing program
executing program
[   98.989736][ T6474] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[  105.153171][ T6474] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff8881199ab900 (size 224):
  comm "syz-executor960", pid 6664, jiffies 4294946533 (age 12.650s)
  hex dump (first 32 bytes):
    a0 84 22 2b 81 88 ff ff a0 84 22 2b 81 88 ff ff  .."+......"+....
    00 c0 fb 1a 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000005745205e>] __build_skb+0x1f/0x100
    [<0000000005f073ef>] __napi_alloc_skb+0xe5/0x140
    [<000000001f704170>] napi_get_frags+0x3a/0x70
    [<00000000a49870a4>] tun_get_user+0xa43/0x1660
    [<000000006267e366>] tun_chr_write_iter+0x66/0xa0
    [<00000000860a858d>] new_sync_write+0x173/0x210
    [<0000000064aea28a>] __kernel_write+0x140/0x1f0
    [<000000002c265702>] write_pipe_buf+0x61/0x80
    [<00000000bf19d87a>] __splice_from_pipe+0x154/0x290
    [<00000000bac933d6>] do_splice+0x772/0x8d0
    [<0000000031d8ea84>] __x64_sys_splice+0xaa/0x110
    [<000000001aa7c29f>] do_syscall_64+0x2d/0x70
    [<0000000020c4a69e>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff8881199ab200 (size 224):
  comm "syz-executor960", pid 6708, jiffies 4294947064 (age 7.340s)
  hex dump (first 32 bytes):
    a0 54 98 16 81 88 ff ff a0 54 98 16 81 88 ff ff  .T.......T......
    00 c0 fb 1a 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000005745205e>] __build_skb+0x1f/0x100
    [<0000000005f073ef>] __napi_alloc_skb+0xe5/0x140
    [<000000001f704170>] napi_get_frags+0x3a/0x70
    [<00000000a49870a4>] tun_get_user+0xa43/0x1660
    [<000000006267e366>] tun_chr_write_iter+0x66/0xa0
    [<00000000860a858d>] new_sync_write+0x173/0x210
    [<0000000064aea28a>] __kernel_write+0x140/0x1f0
    [<000000002c265702>] write_pipe_buf+0x61/0x80
    [<00000000bf19d87a>] __splice_from_pipe+0x154/0x290
    [<00000000bac933d6>] do_splice+0x772/0x8d0
    [<0000000031d8ea84>] __x64_sys_splice+0xaa/0x110
    [<000000001aa7c29f>] do_syscall_64+0x2d/0x70
    [<0000000020c4a69e>] entry_SYSCALL_64_after_hwframe+0x44/0xa9