linux-kernel - [tip:perf/core] perf record: Zero out mmap

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Date:	Fri, 26 Mar 2010 12:57:59 GMT
From:	"tip-bot for Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, acme@...hat.com, hpa@...or.com,
	mingo@...hat.com, lizf@...fujitsu.com,
	yanmin_zhang@...ux.intel.com, stable@...nel.org,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perf/core] perf record: Zero out mmap_array to fix segfault

Commit-ID:  5a10317483f606106395814ee2fdaa2f1256a3b3
Gitweb:     http://git.kernel.org/tip/5a10317483f606106395814ee2fdaa2f1256a3b3
Author:     Zhang, Yanmin <yanmin_zhang@...ux.intel.com>
AuthorDate: Thu, 25 Mar 2010 19:59:01 -0300
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Fri, 26 Mar 2010 08:52:59 +0100

perf record: Zero out mmap_array to fix segfault

Reported-by: Li Zefan <lizf@...fujitsu.com>
Tested-by: Li Zefan <lizf@...fujitsu.com>
Signed-off-by: Zhang Yanmin <yanmin_zhang@...ux.intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
LKML-Reference: <1269557941-15617-6-git-send-email-acme@...radead.org>
Cc: <stable@...nel.org>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 tools/perf/builtin-record.c |    2 +-
 tools/perf/builtin-top.c    |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index bb5b23d..60ecdd3 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -751,7 +751,7 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
 	for (i = 0; i < MAX_NR_CPUS; i++) {
 		for (j = 0; j < MAX_COUNTERS; j++) {
 			fd[i][j] = malloc(sizeof(int)*thread_num);
-			mmap_array[i][j] = malloc(
+			mmap_array[i][j] = zalloc(
 				sizeof(struct mmap_data)*thread_num);
 			if (!fd[i][j] || !mmap_array[i][j])
 				return -ENOMEM;
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 5f3ac9f..4abdd9b 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1371,7 +1371,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
 	for (i = 0; i < MAX_NR_CPUS; i++) {
 		for (j = 0; j < MAX_COUNTERS; j++) {
 			fd[i][j] = malloc(sizeof(int)*thread_num);
-			mmap_array[i][j] = malloc(
+			mmap_array[i][j] = zalloc(
 				sizeof(struct mmap_data)*thread_num);
 			if (!fd[i][j] || !mmap_array[i][j])
 				return -ENOMEM;
--
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