Re: [BUG] 3.2-rc2: BUG kmalloc-8: Redzone overwritten

[Sasha Levin <levinsasha928@gmail.com>]

On Mon, 2011-11-21 at 12:22 +0200, Sasha Levin wrote:
> On Mon, 2011-11-21 at 11:21 +0100, Eric Dumazet wrote:
> > Le lundi 21 novembre 2011 a 11:15 +0100, Eric Dumazet a ecrit :
> > 
> > > 
> > > Hmm, trinity tries to crash decnet ;)
> > > 
> > > Maybe we should remove this decnet stuff for good instead of tracking
> > > all bugs just for the record. Is there anybody still using decnet ?
> > > 
> > > For example dn_start_slow_timer() starts a timer without holding a
> > > reference on struct sock, this is highly suspect.
> > > 
> > > [PATCH] decnet: proper socket refcounting
> > > 
> > > Better use sk_reset_timer() / sk_stop_timer() helpers to make sure we
> > > dont access already freed/reused memory later.
> > > 
> > > Reported-by: Sasha Levin <levinsasha928@gmail.com>
> > > Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
> > 
> > Hmm, I forgot to remove the sock_hold(sk) call from dn_slow_timer(),
> > here is V2 :
> > 
> > [PATCH] decnet: proper socket refcounting
> > 
> > Better use sk_reset_timer() / sk_stop_timer() helpers to make sure we
> > dont access already freed/reused memory later.
> > 
> > Reported-by: Sasha Levin <levinsasha928@gmail.com>
> > Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
> > ---
> 
> [snip]
> 
> Applied locally and running same tests as before, will update with
> results.
> 

Looks ok after a couple days of testing.

	Tested-by: Sasha Levin <levinsasha928@gmail.com>

-- 

Sasha.

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>