lkml.org 
[lkml]   [2011]   [May]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH v3 0/2] Fix uevent race in register_netdevice()
From
From: Kalle Valo <kvalo@adurom.com>
Date: Mon, 16 May 2011 17:46:30 +0300

> I'm trying to fix a race in register_netdevice(). The problem is that
> there's a uevent to userspace before the netdevice is ready for use. The
> problem is described here:
>
> https://bugzilla.kernel.org/show_bug.cgi?id=15606
>
> I have sent few different ways to fix this, but none of them have been
> really usable. Now I came up with a way which changes the driver core
> to make it possible send the uevent in a separate call. This is a clean
> and safe way to fix the race. Downside is that two new functions are
> added to the driver core interface.
>
> Please comment.

This doesn't work.

The sysfs file will still be there before the uevent, so any
process can go in there, and see the inconsistent state.


\
 
 \ /
  Last update: 2011-05-16 20:15    [W:0.060 / U:0.120 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site