[  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 '10.128.0.124' (ECDSA) to the list of known hosts.
syzkaller login: [   65.378685][   T24] audit: type=1400 audit(1598699380.490:8): avc:  denied  { execmem } for  pid=6505 comm="syz-executor194" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
executing program
executing program
[   79.091068][ T6505] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[   85.256737][ T6505] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff888119ac2200 (size 224):
  comm "syz-executor194", pid 6506, jiffies 4294944540 (age 12.690s)
  hex dump (first 32 bytes):
    a0 4c b3 18 81 88 ff ff a0 4c b3 18 81 88 ff ff  .L.......L......
    00 c0 da 1b 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000006ef6ff8f>] __build_skb+0x1f/0x100
    [<0000000003f80945>] __napi_alloc_skb+0xe5/0x140
    [<000000007403396b>] napi_get_frags+0x3a/0x70
    [<0000000087d581a8>] tun_get_user+0xa43/0x1660
    [<000000005b358369>] tun_chr_write_iter+0x66/0xa0
    [<000000000119746b>] new_sync_write+0x173/0x210
    [<000000007dfaa3f7>] __kernel_write+0x140/0x1f0
    [<000000001fb3f926>] write_pipe_buf+0x61/0x80
    [<00000000517da55c>] __splice_from_pipe+0x154/0x290
    [<000000000d13b5bc>] do_splice+0x772/0x8d0
    [<00000000bb9ef0bb>] __x64_sys_splice+0xaa/0x110
    [<00000000d6c059b3>] do_syscall_64+0x2d/0x70
    [<00000000ba342a4c>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888119a5b500 (size 224):
  comm "syz-executor194", pid 6552, jiffies 4294945072 (age 7.370s)
  hex dump (first 32 bytes):
    a0 a4 d2 28 81 88 ff ff a0 a4 d2 28 81 88 ff ff  ...(.......(....
    00 c0 da 1b 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000006ef6ff8f>] __build_skb+0x1f/0x100
    [<0000000003f80945>] __napi_alloc_skb+0xe5/0x140
    [<000000007403396b>] napi_get_frags+0x3a/0x70
    [<0000000087d581a8>] tun_get_user+0xa43/0x1660
    [<000000005b358369>] tun_chr_write_iter+0x66/0xa0
    [<000000000119746b>] new_sync_write+0x173/0x210
    [<000000007dfaa3f7>] __kernel_write+0x140/0x1f0
    [<000000001fb3f926>] write_pipe_buf+0x61/0x80
    [<00000000517da55c>] __splice_from_pipe+0x154/0x290
    [<000000000d13b5bc>] do_splice+0x772/0x8d0
    [<00000000bb9ef0bb>] __x64_sys_splice+0xaa/0x110
    [<00000000d6c059b3>] do_syscall_64+0x2d/0x70
    [<00000000ba342a4c>] entry_SYSCALL_64_after_hwframe+0x44/0xa9