[  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 '10.128.0.234' (ECDSA) to the list of known hosts.
syzkaller login: [  117.233464][   T25] audit: type=1400 audit(1599157587.732:8): avc:  denied  { execmem } for  pid=6439 comm="syz-executor509" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
executing program
executing program
[  131.872109][ T6439] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff88812a99da00 (size 224):
  comm "syz-executor509", pid 6441, jiffies 4294949761 (age 13.510s)
  hex dump (first 32 bytes):
    a0 8c d6 1d 81 88 ff ff a0 8c d6 1d 81 88 ff ff  ................
    00 00 16 18 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000005eeeeada>] __build_skb+0x1f/0x100
    [<0000000033faa842>] __napi_alloc_skb+0xe5/0x140
    [<00000000eec08e2f>] napi_get_frags+0x3a/0x70
    [<00000000e8128a83>] tun_get_user+0xa43/0x1660
    [<00000000d2a43f1a>] tun_chr_write_iter+0x66/0xa0
    [<0000000080294308>] do_iter_readv_writev+0x207/0x2d0
    [<00000000836562d3>] do_iter_write+0xac/0x230
    [<000000003c276528>] vfs_writev+0xc1/0x120
    [<00000000a1306b29>] do_writev+0x83/0x170
    [<000000007497a897>] do_syscall_64+0x2d/0x70
    [<00000000da9ee6e6>] entry_SYSCALL_64_after_hwframe+0x44/0xa9