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Message-ID: <20100720065220.GF11081@secunet.com> Date: Tue, 20 Jul 2010 08:52:20 +0200 From: Steffen Klassert <steffen.klassert@...unet.com> To: Herbert Xu <herbert@...dor.apana.org.au> Cc: Dan Kruchinin <dkruchinin@....org>, Andrew Morton <akpm@...ux-foundation.org>, linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH 4/4] crypto: pcrypt - Dont calulate a callback cpu on empty callback cpumask If the callback cpumask is empty, we crash with a division by zero when we try to calculate a callback cpu. So we don't update the callback cpu in pcrypt_do_parallel if the callback cpumask is empty. Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com> --- crypto/pcrypt.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c index 7153a50..794c172 100644 --- a/crypto/pcrypt.c +++ b/crypto/pcrypt.c @@ -82,6 +82,9 @@ static int pcrypt_do_parallel(struct padata_priv *padata, unsigned int *cb_cpu, if (cpumask_test_cpu(cpu, cpumask->mask)) goto out; + if (!cpumask_weight(cpumask->mask)) + goto out; + cpu_index = cpu % cpumask_weight(cpumask->mask); cpu = cpumask_first(cpumask->mask); -- 1.5.6.5 -- 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/
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