linux-kernel - Re: [PATCH] Fix Kernel Panic in bonding driver debugfs file: rlb_hash

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Message-Id: <20150429.153747.1168229052245734682.davem@davemloft.net>
Date:	Wed, 29 Apr 2015 15:37:47 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	gospo@...ulusnetworks.com
Cc:	vpai@...mai.com, j.vosburgh@...il.com, vfalico@...il.com,
	andy@...yhouse.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix Kernel Panic in bonding driver debugfs file:
 rlb_hash_table

From: Andy Gospodarek <gospo@...ulusnetworks.com>
Date: Wed, 29 Apr 2015 14:51:07 -0400

> On Wed, Apr 29, 2015 at 02:24:23PM -0400, Pai wrote:
>> This patch fixes a Kernel Panic in bonding driver debugfs file: rlb_hash_table.
>> 
>> $> modprobe bonding mode=6
>> $> cat /sys/kernel/debug/bonding/bond0/rlb_hash_table
>> 
>> This will crash the kernel. The struct alb_bond_info is initialized only when
>> the bonding interface is initialized (ip link set bond0 up) and not at the time
>> it is allocated. If we try to read the table before that, it'll result in a 
>> kernel panic.
> 
> Nice catch!
> 
>> 
>> The patch applies against both net and net-next
>> 
>> Signed-off-by: Vishwanath Pai <vpai@...mai.com>
> 
> Signed-off-by: Andy Gospodarek <gospo@...ulusnetworks.com>

Applied, thanks.
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