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Message-Id: <1422557229-3484-1-git-send-email-rickard_strandqvist@spectrumdigital.se>
Date: Thu, 29 Jan 2015 19:47:09 +0100
From: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
To: Oleg Drokin <oleg.drokin@...el.com>,
Andreas Dilger <andreas.dilger@...el.com>
Cc: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
HPDD-discuss@...ts.01.org, devel@...verdev.osuosl.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] staging: lustre: include: lustre_update.h: Fix for possible null pointer dereference
Fix a possible null pointer dereference, there is
otherwise a risk of a possible null pointer dereference.
This was found using a static code analysis program called cppcheck
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
---
drivers/staging/lustre/lustre/include/lustre_update.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/lustre/lustre/include/lustre_update.h b/drivers/staging/lustre/lustre/include/lustre_update.h
index 84defce..00e1361 100644
--- a/drivers/staging/lustre/lustre/include/lustre_update.h
+++ b/drivers/staging/lustre/lustre/include/lustre_update.h
@@ -165,12 +165,14 @@ static inline int update_get_reply_buf(struct update_reply *reply, void **buf,
int result;
ptr = update_get_buf_internal(reply, index, &size);
+
+ LASSERT((ptr != NULL && size >= sizeof(int)));
+
result = *(int *)ptr;
if (result < 0)
return result;
- LASSERT((ptr != NULL && size >= sizeof(int)));
*buf = ptr + sizeof(int);
return size - sizeof(int);
}
--
1.7.10.4
--
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