linux-kernel - Re: [PATCH v2] cgroup: fix panic in netprio

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: <20120709.001818.22457351541916000.davem@davemloft.net>
Date:	Mon, 09 Jul 2012 00:18:18 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	gaofeng@...fujitsu.com
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	nhorman@...driver.com, tj@...nel.org, lizefan@...wei.com,
	eric.dumazet@...il.com
Subject: Re: [PATCH v2] cgroup: fix panic in netprio_cgroup

From: Gao feng <gaofeng@...fujitsu.com>
Date: Thu, 5 Jul 2012 17:28:40 +0800

> we set max_prioidx to the first zero bit index of prioidx_map in
> function get_prioidx.
> 
> So when we delete the low index netprio cgroup and adding a new
> netprio cgroup again,the max_prioidx will be set to the low index.
> 
> when we set the high index cgroup's net_prio.ifpriomap,the function
> write_priomap will call update_netdev_tables to alloc memory which
> size is sizeof(struct netprio_map) + sizeof(u32) * (max_prioidx + 1),
> so the size of array that map->priomap point to is max_prioidx +1,
> which is low than what we actually need.
> 
> fix this by adding check in get_prioidx,only set max_prioidx when
> max_prioidx low than the new prioidx.
> 
> Signed-off-by: Gao feng <gaofeng@...fujitsu.com>

Applied.
--
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/