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Message-Id: <1461767472-8827-14-git-send-email-acme@kernel.org>
Date: Wed, 27 Apr 2016 11:30:55 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ingo Molnar <mingo@...nel.org>
Cc: linux-kernel@...r.kernel.org,
Colin Ian King <colin.king@...onical.com>,
Adrian Hunter <adrian.hunter@...el.com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Peter Zijlstra <peterz@...radead.org>,
Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 13/30] perf intel-pt: Fix off-by-one comparison on maximum code
From: Colin Ian King <colin.king@...onical.com>
The check for the maximum code is off-by-one; the current comparison of
a code that is INTEL_PT_ERR_MAX will cause the strlcpy to perform an out
of bounds array access on the intel_pt_err_msgs array.
Fix this with a >= comparison.
Signed-off-by: Colin Ian King <colin.king@...onical.com>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/1461524203-10224-1-git-send-email-colin.king@canonical.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
index 9409d014b46c..9c8f15da86ce 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
@@ -356,7 +356,7 @@ static const char *intel_pt_err_msgs[] = {
int intel_pt__strerror(int code, char *buf, size_t buflen)
{
- if (code < 1 || code > INTEL_PT_ERR_MAX)
+ if (code < 1 || code >= INTEL_PT_ERR_MAX)
code = INTEL_PT_ERR_UNK;
strlcpy(buf, intel_pt_err_msgs[code], buflen);
return 0;
--
2.5.5
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