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powerpc/pseries/dlpar: Fix a missing check in dlpar_parse_cc_property() 

In dlpar_parse_cc_property(), 'prop->name' is allocated by kstrdup().
kstrdup() may return NULL, so it should be checked and handle error.
And prop should be freed if 'prop->name' is NULL.

Signed-off-by: Gen Zhang <blackgod016574@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Gen Zhang 2019-05-26 10:42:40 +08:00 committed by Michael Ellerman
parent 3e3ebed3fe
commit efa9ace68e
1 changed files with 4 additions and 0 deletions
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4
arch/powerpc/platforms/pseries/dlpar.c
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@ -61,6 +61,10 @@ static struct property *dlpar_parse_cc_property(struct cc_workarea *ccwa)
name = (char *)ccwa + be32_to_cpu(ccwa->name_offset);
prop->name = kstrdup(name, GFP_KERNEL);
if (!prop->name) {
dlpar_free_cc_property(prop);
return NULL;
}
prop->length = be32_to_cpu(ccwa->prop_length);
value = (char *)ccwa + be32_to_cpu(ccwa->prop_offset);