From: Gen Zhang Date: Sun, 26 May 2019 02:42:40 +0000 (+0800) Subject: powerpc/pseries/dlpar: Fix a missing check in dlpar_parse_cc_property() X-Git-Tag: v4.19.88~61 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=32a24a397aee35ca2bb0f835b8f3daabd88890fa;p=thirdparty%2Fkernel%2Fstable.git powerpc/pseries/dlpar: Fix a missing check in dlpar_parse_cc_property() [ 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 Signed-off-by: Michael Ellerman Signed-off-by: Sasha Levin --- diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c index e3010b14aea51..c5ffcadab7302 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);