lkml.org 
[lkml]   [2014]   [Jun]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 3.15 regression: wrong cgroup magic
Cc: Greg
Cc: Jianyu Zhan

On 2014/6/3 8:56, Andy Lutomirski wrote:
> Sorry I didn't notice this earlier. Linux 3.15 breaks my production

But 3.15 hasn't been released. :)

> system :( The cause appears to be:
>
> commit 2bd59d48ebfb3df41ee56938946ca0dd30887312
> Author: Tejun Heo <tj@kernel.org>
> Date: Tue Feb 11 11:52:49 2014 -0500
>
> cgroup: convert to kernfs
>
> In particular, this piece:
>
> - sb->s_magic = CGROUP_SUPER_MAGIC;
>
> The result is that cgroup shows up with the wrong magic number, so my
> code goes "oh crap, cgroupfs isn't mounted" and fails.
>
> I can change my code to hack around this, but I can imagine other
> things getting tripped up. Is there still time to fix this?
>

This should be fixed by "kernfs: move the last knowledge of sysfs out from kernfs".

It's in driver-core-next.

https://git.kernel.org/cgit/linux/kernel/git/gregkh/driver-core.git/commit/?h=driver-core-next&id=26fc9cd200ec839e0b3095e05ae018f27314e7aa



\
 
 \ /
  Last update: 2014-06-03 04:21    [W:0.107 / U:0.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site