[  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 '10.128.10.18' (ECDSA) to the list of known hosts.
syzkaller login: [   54.483552][   T24] audit: type=1400 audit(1599864576.054:8): avc:  denied  { execmem } for  pid=6471 comm="syz-executor623" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
executing program
executing program
[   68.677541][ T6471] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[   75.054870][ T6471] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff888119b03a00 (size 224):
  comm "syz-executor623", pid 6473, jiffies 4294943471 (age 13.190s)
  hex dump (first 32 bytes):
    a0 64 48 1c 81 88 ff ff a0 64 48 1c 81 88 ff ff  .dH......dH.....
    00 c0 ce 16 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000089f0015a>] __build_skb+0x1f/0x100
    [<00000000bf34021e>] __napi_alloc_skb+0xe5/0x140
    [<000000008fa54912>] napi_get_frags+0x3a/0x70
    [<00000000879e128a>] tun_get_user+0xa43/0x1660
    [<000000004d5378a4>] tun_chr_write_iter+0x66/0xa0
    [<000000003f02ff48>] new_sync_write+0x173/0x210
    [<00000000c3437217>] __kernel_write+0x140/0x1f0
    [<00000000f1d65b10>] write_pipe_buf+0x61/0x80
    [<0000000002db4dd9>] __splice_from_pipe+0x154/0x290
    [<0000000093831285>] do_splice+0x772/0x8d0
    [<00000000ac0af729>] __x64_sys_splice+0xaa/0x110
    [<00000000813a2f8f>] do_syscall_64+0x2d/0x70
    [<00000000554a2968>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888119ac4d00 (size 224):
  comm "syz-executor623", pid 6519, jiffies 4294944022 (age 7.680s)
  hex dump (first 32 bytes):
    a0 fc 67 1c 81 88 ff ff a0 fc 67 1c 81 88 ff ff  ..g.......g.....
    00 c0 ce 16 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000089f0015a>] __build_skb+0x1f/0x100
    [<00000000bf34021e>] __napi_alloc_skb+0xe5/0x140
    [<000000008fa54912>] napi_get_frags+0x3a/0x70
    [<00000000879e128a>] tun_get_user+0xa43/0x1660
    [<000000004d5378a4>] tun_chr_write_iter+0x66/0xa0
    [<000000003f02ff48>] new_sync_write+0x173/0x210
    [<00000000c3437217>] __kernel_write+0x140/0x1f0
    [<00000000f1d65b10>] write_pipe_buf+0x61/0x80
    [<0000000002db4dd9>] __splice_from_pipe+0x154/0x290
    [<0000000093831285>] do_splice+0x772/0x8d0
    [<00000000ac0af729>] __x64_sys_splice+0xaa/0x110
    [<00000000813a2f8f>] do_syscall_64+0x2d/0x70
    [<00000000554a2968>] entry_SYSCALL_64_after_hwframe+0x44/0xa9