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

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[ Upstream commit efa9ace68e ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Gen Zhang
2019-05-26 10:42:40 +08:00
committed by Greg Kroah-Hartman
parent 123b9510b7
commit 32a24a397a
1 changed files with 4 additions and 0 deletions
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4
arch/powerpc/platforms/pseries/dlpar.c
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@@ -63,6 +63,10 @@ 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);