lkml.org 
[lkml]   [2007]   [Mar]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Possible "struct pid" leak from tty_io.c
On 09/03/07, Eric W. Biederman <ebiederm@xmission.com> wrote:
> "Catalin Marinas" <catalin.marinas@gmail.com> writes:
>
> > On 08/03/07, Eric W. Biederman <ebiederm@xmission.com> wrote:
> >> "Catalin Marinas" <catalin.marinas@gmail.com> writes:
> >
> > I think it's only the pid_chain and rcu member that could be placed in
> > a list and kmemleak scans the memory for these two offsets as well.
> > I'll check those lists anyway but I doubt it's a more fundamental
> > problem with how kmemleak handles struct pid as I should've probably
> > got more reports.
>
> Right. I was pointing out the possibilities but because we do
> some tricky things. Mostly I was wondering about the hlist for
> the list of tasks. Now if a task is on that list we should have
> a struct pid_link pointing at our struct pid, so it shouldn't fool
> kmemleak but I'm still a little curious if all of those hlist_heads are
> NULL pointers.

Yes, all the 3 hlist_head tasks are NULL pointers on the reported object.

--
Catalin
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-03-09 17:57    [W:0.041 / U:0.576 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site