[  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 '10.128.10.22' (ECDSA) to the list of known hosts.
syzkaller login: [   49.265204][   T24] audit: type=1400 audit(1598195420.466:8): avc:  denied  { execmem } for  pid=6457 comm="syz-executor721" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
executing program
executing program
[   63.139293][ T6457] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[   69.385814][ T6457] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff8881190cad00 (size 224):
  comm "syz-executor721", pid 6458, jiffies 4294942932 (age 12.890s)
  hex dump (first 32 bytes):
    a0 8c d8 1c 81 88 ff ff a0 8c d8 1c 81 88 ff ff  ................
    00 c0 bc 2a 81 88 ff ff 00 00 00 00 00 00 00 00  ...*............
  backtrace:
    [<0000000095ae6c53>] __build_skb+0x1f/0x100
    [<000000005c95ce25>] __napi_alloc_skb+0xe5/0x140
    [<0000000042085c2e>] napi_get_frags+0x3a/0x70
    [<0000000086af6b97>] tun_get_user+0xa43/0x1660
    [<000000007acf9294>] tun_chr_write_iter+0x66/0xa0
    [<000000003e525147>] new_sync_write+0x173/0x210
    [<0000000078d09c4d>] vfs_write+0x21d/0x280
    [<00000000c9d48729>] ksys_write+0x72/0x120
    [<000000008a181c50>] do_syscall_64+0x2d/0x70
    [<00000000dd154974>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff8881190ca900 (size 224):
  comm "syz-executor721", pid 6504, jiffies 4294943471 (age 7.500s)
  hex dump (first 32 bytes):
    a0 7c 24 1b 81 88 ff ff a0 7c 24 1b 81 88 ff ff  .|$......|$.....
    00 c0 bc 2a 81 88 ff ff 00 00 00 00 00 00 00 00  ...*............
  backtrace:
    [<0000000095ae6c53>] __build_skb+0x1f/0x100
    [<000000005c95ce25>] __napi_alloc_skb+0xe5/0x140
    [<0000000042085c2e>] napi_get_frags+0x3a/0x70
    [<0000000086af6b97>] tun_get_user+0xa43/0x1660
    [<000000007acf9294>] tun_chr_write_iter+0x66/0xa0
    [<000000003e525147>] new_sync_write+0x173/0x210
    [<0000000078d09c4d>] vfs_write+0x21d/0x280
    [<00000000c9d48729>] ksys_write+0x72/0x120
    [<000000008a181c50>] do_syscall_64+0x2d/0x70
    [<00000000dd154974>] entry_SYSCALL_64_after_hwframe+0x44/0xa9