Re: [PATCH v4 0/3] net: unix: fix use-after-free

From: Jason Baron <jbaron@akamai.com>
Date: Fri,  9 Oct 2015 00:15:59 -0400

These patches are against mainline, I can re-base to net-next, please
let me know.

They have been tested against: https://lkml.org/lkml/2015/9/13/195,
which causes the use-after-free quite quickly and here:
https://lkml.org/lkml/2015/10/2/693.

I'd like to understand how patches that don't even compile can be
"tested"?

net/unix/af_unix.c: In function ‘unix_dgram_writable’:
net/unix/af_unix.c:2480:3: error: ‘other_full’ undeclared (first use in this function)
net/unix/af_unix.c:2480:3: note: each undeclared identifier is reported only once for each function it appears in

Could you explain how that works, I'm having a hard time understanding
this?

Also please address Hannes's feedback, thanks.