netbsd boot error: can't ssh into the instance (5)

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: 49fec705 Fix fallout from migration from alloca() to mallo..
git tree: netbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=117bbcf9100000
kernel config: https://syzkaller.appspot.com/x/.config?x=1420f906d33d9f1f
dashboard link: https://syzkaller.appspot.com/bug?extid=23fb5ac47a79069e37c5
compiler: g++ (Ubuntu 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+23fb5a...@syzkaller.appspotmail.com



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