[  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 '10.128.0.80' (ECDSA) to the list of known hosts.
syzkaller login: [   63.350330][   T24] audit: type=1400 audit(1599878831.205:8): avc:  denied  { execmem } for  pid=6445 comm="syz-executor264" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
executing program
executing program
[   78.494639][ T6445] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[   84.656057][ T6445] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff8881199ba300 (size 224):
  comm "syz-executor264", pid 6446, jiffies 4294944475 (age 12.690s)
  hex dump (first 32 bytes):
    a0 9c da 28 81 88 ff ff a0 9c da 28 81 88 ff ff  ...(.......(....
    00 40 80 18 81 88 ff ff 00 00 00 00 00 00 00 00  .@..............
  backtrace:
    [<00000000ef56198d>] __build_skb+0x1f/0x100
    [<0000000072083303>] __napi_alloc_skb+0xe5/0x140
    [<0000000016470893>] napi_get_frags+0x3a/0x70
    [<00000000f2a3ae49>] tun_get_user+0xa43/0x1660
    [<00000000d89f53c3>] tun_chr_write_iter+0x66/0xa0
    [<000000000b00ab5c>] new_sync_write+0x173/0x210
    [<00000000d22202f1>] __kernel_write+0x140/0x1f0
    [<00000000f32b6dc7>] write_pipe_buf+0x61/0x80
    [<000000005be50827>] __splice_from_pipe+0x154/0x290
    [<00000000cdf76d87>] do_splice+0x772/0x8d0
    [<0000000092b98f6f>] __x64_sys_splice+0xaa/0x110
    [<000000006cc1a1f6>] do_syscall_64+0x2d/0x70
    [<00000000bea4d076>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff88811c566f00 (size 224):
  comm "syz-executor264", pid 6494, jiffies 4294945008 (age 7.360s)
  hex dump (first 32 bytes):
    a0 14 bf 19 81 88 ff ff a0 14 bf 19 81 88 ff ff  ................
    00 40 80 18 81 88 ff ff 00 00 00 00 00 00 00 00  .@..............
  backtrace:
    [<00000000ef56198d>] __build_skb+0x1f/0x100
    [<0000000072083303>] __napi_alloc_skb+0xe5/0x140
    [<0000000016470893>] napi_get_frags+0x3a/0x70
    [<00000000f2a3ae49>] tun_get_user+0xa43/0x1660
    [<00000000d89f53c3>] tun_chr_write_iter+0x66/0xa0
    [<000000000b00ab5c>] new_sync_write+0x173/0x210
    [<00000000d22202f1>] __kernel_write+0x140/0x1f0
    [<00000000f32b6dc7>] write_pipe_buf+0x61/0x80
    [<000000005be50827>] __splice_from_pipe+0x154/0x290
    [<00000000cdf76d87>] do_splice+0x772/0x8d0
    [<0000000092b98f6f>] __x64_sys_splice+0xaa/0x110
    [<000000006cc1a1f6>] do_syscall_64+0x2d/0x70
    [<00000000bea4d076>] entry_SYSCALL_64_after_hwframe+0x44/0xa9