From: Steffen Klassert Subject: [PATCH 0/4] padata/pcrypt: fixes Date: Tue, 20 Jul 2010 08:47:36 +0200 Message-ID: <20100720064736.GB11081@secunet.com> References: <20100714142951.22817d0c@leibniz> <20100719060426.GA19696@gondor.apana.org.au> <20100719064050.GA11081@secunet.com> <20100719073255.GA20403@gondor.apana.org.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Dan Kruchinin , Andrew Morton , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org To: Herbert Xu Return-path: Content-Disposition: inline In-Reply-To: <20100719073255.GA20403@gondor.apana.org.au> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org This patchset contains the following fixes: 1. padata - Fix a potential hang of the parallel worker threads on cpu hotplug. 2. padata - Fix two NULL pointer dereference crashes if one of the padata cpumasks is empty. The crashes can be triggered by doing echo 0 > /sys/kernel/pcrypt/pencrypt/[parallel_cpumask/serial_cpumask] 3. padata - Fix a division by zero crash if the parallel cpumask contains no active cpu. Can be triggered by doing echo 0 > /sys/kernel/pcrypt/pencrypt/parallel_cpumask 4. pcrypt - Fix division by zero crash if the callback cpumask is empty. Can be triggered by doing echo 0 > /sys/kernel/pcrypt/pencrypt/serial_cpumask I ran a script that does cpumask changes and cpu hotplugs as fast as possible while sending IPsec packets on maximal rate with pcrypt. It showed no furter crashes overnight, so I hope I've got them all. padata API corrections and some minor fixes/cleanups are comming later. Steffen