linux-kernel - Re: Hang in 2.6.23-rc5

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.LFD.0.999.0709030411510.31154@enigma.security.iitk.ac.in>
Date:	Mon, 3 Sep 2007 04:15:01 +0530 (IST)
From:	Satyam Sharma <satyam@...radead.org>
To:	Alexey Dobriyan <adobriyan@...il.com>
cc:	FD Cami <francois.cami@...e.fr>,
	Alessandro Suardi <alessandro.suardi@...il.com>,
	charles gagalac <charles.gagalac@...il.com>,
	daryll q <daryll_26m@...oo.com.ph>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Hang in 2.6.23-rc5

On Mon, 3 Sep 2007, Alexey Dobriyan wrote:
> 
> Try this from net-2.6 tree:
> 
> --- a/net/ipv4/tcp_input.c
> +++ b/net/ipv4/tcp_input.c
> @@ -560,7 +560,7 @@ static u32 tcp_rto_min(struct sock *sk)
>  	struct dst_entry *dst = __sk_dst_get(sk);
>  	u32 rto_min = TCP_RTO_MIN;
>  
> -	if (dst_metric_locked(dst, RTAX_RTO_MIN))
> +	if (dst && dst_metric_locked(dst, RTAX_RTO_MIN))
>  		rto_min = dst->metrics[RTAX_RTO_MIN-1];
>  	return rto_min;
>  }

That's my impression as well. That's way too core/busy a codepath to have
a bug in. As I said earlier, almost anybody testing -rc5 is sure to hit
this within a few hours (probably less) -- sad, it greatly erodes from the
usefulness of -rc5 as a release candidate.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/