[  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 '10.128.10.46' (ECDSA) to the list of known hosts.
syzkaller login: [  107.332306][   T24] audit: type=1400 audit(1598241797.104:8): avc:  denied  { execmem } for  pid=6494 comm="syz-executor536" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
executing program
executing program
[  121.177256][ T6494] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[  127.404056][ T6494] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff8881293ce100 (size 224):
  comm "syz-executor536", pid 6496, jiffies 4294948741 (age 12.820s)
  hex dump (first 32 bytes):
    a0 84 cc 24 81 88 ff ff a0 84 cc 24 81 88 ff ff  ...$.......$....
    00 80 1e 1a 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000093e2cba5>] __build_skb+0x1f/0x100
    [<00000000a8fa0264>] __napi_alloc_skb+0xe5/0x140
    [<000000004902b22a>] napi_get_frags+0x3a/0x70
    [<000000009169d6dd>] tun_get_user+0xa43/0x1660
    [<0000000081d7d36d>] tun_chr_write_iter+0x66/0xa0
    [<00000000de358542>] new_sync_write+0x173/0x210
    [<00000000507842fc>] vfs_write+0x21d/0x280
    [<000000006f93084b>] ksys_write+0x72/0x120
    [<000000007659c706>] do_syscall_64+0x2d/0x70
    [<000000002f37d1d3>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888118792700 (size 224):
  comm "syz-executor536", pid 6539, jiffies 4294949277 (age 7.460s)
  hex dump (first 32 bytes):
    a0 c4 d1 1d 81 88 ff ff a0 c4 d1 1d 81 88 ff ff  ................
    00 80 1e 1a 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000093e2cba5>] __build_skb+0x1f/0x100
    [<00000000a8fa0264>] __napi_alloc_skb+0xe5/0x140
    [<000000004902b22a>] napi_get_frags+0x3a/0x70
    [<000000009169d6dd>] tun_get_user+0xa43/0x1660
    [<0000000081d7d36d>] tun_chr_write_iter+0x66/0xa0
    [<00000000de358542>] new_sync_write+0x173/0x210
    [<00000000507842fc>] vfs_write+0x21d/0x280
    [<000000006f93084b>] ksys_write+0x72/0x120
    [<000000007659c706>] do_syscall_64+0x2d/0x70
    [<000000002f37d1d3>] entry_SYSCALL_64_after_hwframe+0x44/0xa9