From: Gen Zhang <blackgod016574@gmail.com>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH] dlpar: Fix a missing-check bug in dlpar_parse_cc_property()
Date: Thu, 30 May 2019 08:58:22 +0800 [thread overview]
Message-ID: <20190530005822.GA5942@zhanggen-UX430UQ> (raw)
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>
Acked-by: Nathan Lynch <nathanl@linux.ibm.com>
---
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index 1795804..c852024 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -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);
---
next reply other threads:[~2019-05-30 0:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-30 0:58 Gen Zhang [this message]
-- strict thread matches above, loose matches on Subject: below --
2019-05-26 2:42 [PATCH] dlpar: Fix a missing-check bug in dlpar_parse_cc_property() Gen Zhang
2019-05-28 16:38 ` Nathan Lynch
2019-06-03 12:32 ` Michael Ellerman
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