Commit cc74f4bc authored Jul 20, 2010 by Steffen Klassert Committed by Herbert Xu Jul 26, 2010

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@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent 7424713b

crypto/pcrypt.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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);