Re: [PATCH] connector: fix out-of-order cn_proc netlink message delivery

[David Miller]

From: Aaron Campbell <aaron@xxxxxxxxxx>
Date: Fri, 24 Jun 2016 10:05:32 -0300

> The proc connector messages include a sequence number, allowing userspace
> programs to detect lost messages.  However, performing this detection is
> currently more difficult than necessary, since netlink messages can be
> delivered to the application out-of-order.  To fix this, leave pre-emption
> disabled during cn_netlink_send(), and use GFP_NOWAIT.
> 
> The following was written as a test case.  Building the kernel w/ make -j32
> proved a reliable way to generate out-of-order cn_proc messages.
 ...
> Signed-off-by: Aaron Campbell <aaron@xxxxxxxxxx>

Applied.