netdev - Re: [PATCH] net: Fix corruption in /proc/*/net/dev

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]

Date:	Mon, 28 Nov 2011 18:08:07 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	anton@...ba.org, levinsasha928@...il.com, mpm@...enic.com,
	cl@...ux-foundation.org, penberg@...nel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	mihai.maruseac@...il.com
Subject: Re: [PATCH] net: Fix corruption in /proc/*/net/dev_mcast

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Mon, 28 Nov 2011 10:55:16 +0100

>> With slub debugging on I see red zone issues in /proc/*/net/dev_mcast:
>> 
>> =============================================================================
>> BUG kmalloc-8: Redzone overwritten
>> -----------------------------------------------------------------------------
 ...
>> dev_mc_seq_ops uses dev_seq_start/next/stop but only allocates
>> sizeof(struct seq_net_private) of private data, whereas it expects
>> sizeof(struct dev_iter_state):
>> 
>> struct dev_iter_state {
>> 	struct seq_net_private p;
>> 	unsigned int pos; /* bucket << BUCKET_SPACE + offset */
>> };
>> 
>> Create dev_seq_open_ops and use it so we don't have to expose
>> struct dev_iter_state.
>> 
>> Signed-off-by: Anton Blanchard <anton@...ba.org>
 ...
> Problem added by commit f04565ddf52e4 (dev: use name hash for
> dev_seq_ops)
> 
> 
> Acked-by: Eric Dumazet <eric.dumazet@...il.com>
> CC: Mihai Maruseac <mihai.maruseac@...il.com>

Applied, thanks everyone.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html