Messages in this thread Patch in this message | | | From | Martin Kepplinger <> | Subject | [PATCH] tools: perf: fix leaking rec_argv in error cases | Date | Wed, 13 Sep 2017 21:14:19 +0200 |
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Let's free the allocated rec_argv in case we return early, in order to avoid leaking memory.
This adds free() at a few very similar places across the tree where it was missing.
Signed-off-by: Martin Kepplinger <martink@posteo.de> --- tools/perf/builtin-c2c.c | 1 + tools/perf/builtin-mem.c | 1 + tools/perf/builtin-timechart.c | 4 +++- tools/perf/builtin-trace.c | 1 + 4 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c index 475999e48f66..bb1ee22bd221 100644 --- a/tools/perf/builtin-c2c.c +++ b/tools/perf/builtin-c2c.c @@ -2732,6 +2732,7 @@ static int perf_c2c__record(int argc, const char **argv) if (!perf_mem_events[j].supported) { pr_err("failed: event '%s' not supported\n", perf_mem_events[j].name); + free(rec_argv); return -1; } diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c index 0f15634ef82c..6940490bc3f9 100644 --- a/tools/perf/builtin-mem.c +++ b/tools/perf/builtin-mem.c @@ -112,6 +112,7 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem) if (!perf_mem_events[j].supported) { pr_err("failed: event '%s' not supported\n", perf_mem_events__name(j)); + free(rec_argv); return -1; } diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index 4e2e61695986..01de01ca14f2 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -1732,8 +1732,10 @@ static int timechart__io_record(int argc, const char **argv) if (rec_argv == NULL) return -ENOMEM; - if (asprintf(&filter, "common_pid != %d", getpid()) < 0) + if (asprintf(&filter, "common_pid != %d", getpid()) < 0) { + free(rec_argv); return -ENOMEM; + } p = rec_argv; for (i = 0; i < common_args_nr; i++) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 771ddab94bb0..dd8eec4c755c 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2078,6 +2078,7 @@ static int trace__record(struct trace *trace, int argc, const char **argv) rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit"; else { pr_err("Neither raw_syscalls nor syscalls events exist.\n"); + free(rec_argv); return -1; } } -- 2.11.0
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