lkml.org 
[lkml]   [2007]   [Mar]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: dst_ifdown breaks infiniband?
Quoting Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>:
Subject: Re: dst_ifdown breaks infiniband?
> > Can dst->neighbour be changed to point to NULL instead, and the neighbour
> > released?
>
> It should be cleared and we should be sure it will not be destroyed
> before quiescent state.
>
> Seems, this is the only correct solution, but to do this we have
> to audit all the places where dst->neighbour is dereferenced for
> RCU safety.
>
> Actually, it is very good you caught this eventually, the bug was
> so _disgusting_ that it was "forgotten" all the time, waiting for
> someone who will point out that the king is naked. :-)

Actually that might not be too bad:
$grep -rIi 'dst->neighbour' net/ | wc -l
36

I'll try to do it.

--
MST
-
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: 2007-03-18 21:35    [W:0.144 / U:24.248 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site