[  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 '10.128.0.223' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   48.803012][ T8465] syz-executor319 uses obsolete (PF_INET,SOCK_PACKET)
[   48.855664][    C0] hrtimer: interrupt took 16663 ns
executing program
executing program
executing program
[   71.245823][ T8464] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[   73.250514][ T8464] kmemleak: 2 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff8881104b5d00 (size 232):
  comm "syz-executor319", pid 8465, jiffies 4294942166 (age 24.480s)
  hex dump (first 32 bytes):
    a0 8c 19 0f 81 88 ff ff a0 8c 19 0f 81 88 ff ff  ................
    00 80 a1 13 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002cf94b1f>] __alloc_skb+0x6d/0x280
    [<00000000c5dc2b66>] __napi_alloc_skb+0x67/0x170
    [<000000002165810a>] napi_get_frags+0x3c/0x80
    [<00000000ba96c6af>] tun_get_user+0xfda/0x1b40
    [<00000000d9d11466>] tun_chr_write_iter+0x84/0xe0
    [<0000000089dc8fc9>] new_sync_write+0x1d7/0x2b0
    [<000000002fc95347>] vfs_write+0x34c/0x400
    [<00000000e298d3c6>] ksys_write+0x9d/0x160
    [<0000000087c29587>] do_syscall_64+0x2d/0x70
    [<00000000f5ddc31f>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff88810e411e00 (size 232):
  comm "syz-executor319", pid 8549, jiffies 4294943198 (age 14.160s)
  hex dump (first 32 bytes):
    a0 54 f8 03 81 88 ff ff a0 54 f8 03 81 88 ff ff  .T.......T......
    00 c0 a0 13 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002cf94b1f>] __alloc_skb+0x6d/0x280
    [<00000000c5dc2b66>] __napi_alloc_skb+0x67/0x170
    [<000000002165810a>] napi_get_frags+0x3c/0x80
    [<00000000ba96c6af>] tun_get_user+0xfda/0x1b40
    [<00000000d9d11466>] tun_chr_write_iter+0x84/0xe0
    [<0000000089dc8fc9>] new_sync_write+0x1d7/0x2b0
    [<000000002fc95347>] vfs_write+0x34c/0x400
    [<00000000e298d3c6>] ksys_write+0x9d/0x160
    [<0000000087c29587>] do_syscall_64+0x2d/0x70
    [<00000000f5ddc31f>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff88810e498500 (size 232):
  comm "syz-executor319", pid 8591, jiffies 4294943810 (age 8.040s)
  hex dump (first 32 bytes):
    a0 6c 94 13 81 88 ff ff a0 6c 94 13 81 88 ff ff  .l.......l......
    00 c0 a0 13 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002cf94b1f>] __alloc_skb+0x6d/0x280
    [<00000000c5dc2b66>] __napi_alloc_skb+0x67/0x170
    [<000000002165810a>] napi_get_frags+0x3c/0x80
    [<00000000ba96c6af>] tun_get_user+0xfda/0x1b40
    [<00000000d9d11466>] tun_chr_write_iter+0x84/0xe0
    [<0000000089dc8fc9>] new_sync_write+0x1d7/0x2b0
    [<000000002fc95347>] vfs_write+0x34c/0x400
    [<00000000e298d3c6>] ksys_write+0x9d/0x160
    [<0000000087c29587>] do_syscall_64+0x2d/0x70
    [<00000000f5ddc31f>] entry_SYSCALL_64_after_hwframe+0x44/0xa9