Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 103/125] powerpc/pseries/dlpar: Fix a missing check in dlpar_parse_cc_property() | Date | Wed, 4 Dec 2019 18:56:48 +0100 |
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From: Gen Zhang <blackgod016574@gmail.com>
[ Upstream commit efa9ace68e487ddd29c2b4d6dd23242158f1f607 ]
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> --- arch/powerpc/platforms/pseries/dlpar.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c index 999b04819d699..5abb8e2239a54 100644 --- a/arch/powerpc/platforms/pseries/dlpar.c +++ b/arch/powerpc/platforms/pseries/dlpar.c @@ -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); -- 2.20.1
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