[  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 '10.128.0.194' (ECDSA) to the list of known hosts.
syzkaller login: [   92.819096][   T24] audit: type=1400 audit(1598719521.556:8): avc:  denied  { execmem } for  pid=6465 comm="syz-executor089" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
executing program
executing program
[  107.182351][ T6465] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[  113.584320][ T6465] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff88811890f700 (size 224):
  comm "syz-executor089", pid 6467, jiffies 4294947312 (age 13.280s)
  hex dump (first 32 bytes):
    a0 94 08 1a 81 88 ff ff a0 94 08 1a 81 88 ff ff  ................
    00 40 8a 27 81 88 ff ff 00 00 00 00 00 00 00 00  .@.'............
  backtrace:
    [<00000000e74c6bdb>] __build_skb+0x1f/0x100
    [<00000000fae8cc56>] __napi_alloc_skb+0xe5/0x140
    [<000000005bf78857>] napi_get_frags+0x3a/0x70
    [<00000000e2b9500d>] tun_get_user+0xa43/0x1660
    [<00000000ef3bcd4a>] tun_chr_write_iter+0x66/0xa0
    [<00000000a8045a6a>] do_iter_readv_writev+0x207/0x2d0
    [<00000000fdb97826>] do_iter_write+0xac/0x230
    [<000000004ddccd5e>] vfs_writev+0xc1/0x120
    [<000000006733c8e4>] do_writev+0x83/0x170
    [<00000000760ce164>] do_syscall_64+0x2d/0x70
    [<00000000330a7966>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff88811992a700 (size 224):
  comm "syz-executor089", pid 6511, jiffies 4294947870 (age 7.700s)
  hex dump (first 32 bytes):
    a0 b4 9d 19 81 88 ff ff a0 b4 9d 19 81 88 ff ff  ................
    00 40 8a 27 81 88 ff ff 00 00 00 00 00 00 00 00  .@.'............
  backtrace:
    [<00000000e74c6bdb>] __build_skb+0x1f/0x100
    [<00000000fae8cc56>] __napi_alloc_skb+0xe5/0x140
    [<000000005bf78857>] napi_get_frags+0x3a/0x70
    [<00000000e2b9500d>] tun_get_user+0xa43/0x1660
    [<00000000ef3bcd4a>] tun_chr_write_iter+0x66/0xa0
    [<00000000a8045a6a>] do_iter_readv_writev+0x207/0x2d0
    [<00000000fdb97826>] do_iter_write+0xac/0x230
    [<000000004ddccd5e>] vfs_writev+0xc1/0x120
    [<000000006733c8e4>] do_writev+0x83/0x170
    [<00000000760ce164>] do_syscall_64+0x2d/0x70
    [<00000000330a7966>] entry_SYSCALL_64_after_hwframe+0x44/0xa9