lkml.org 
[lkml]   [2016]   [Sep]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] fs:Fix kmemleak leak warning in getname_flags about working on unitialized memory
From
Date
On 8/4/16 8:57 AM, Al Viro wrote:

> Don't feed the troll. On all paths leading to that place we have
> result->name = kname;
> len = strncpy_from_user(kname, filename, EMBEDDED_NAME_MAX);
> or
> result->name = kname;
> len = strncpy_from_user(kname, filename, PATH_MAX);
> with failure exits taken if strncpy_from_user() returns an error, which means
> that the damn thing has already been copied into.
>
> FWIW, it looks a lot like buggered kmemcheck; as usual, he can't be bothered
> to mention which kernel version would it be (let alone how to reproduce it
> on the kernel in question), but IIRC davej had run into some instrumentation
> breakage lately.

The original report is in https://bugzilla.kernel.org/show_bug.cgi?id=120651
if anyone is interested in it.

-Eric

> Again, don't feed the troll - you are only inviting an "improved" version
> of that garbage, just as pointless.

\
 
 \ /
  Last update: 2016-09-17 09:58    [W:0.640 / U:0.168 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site