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perf tools: Free temporary 'sys' string in read_event_files()
[ Upstream commit 1e44224fb0
]
For each system in a given pevent, read_event_files() reads in a
temporary 'sys' string. Be sure to free this string before moving onto
to the next system and/or leaving read_event_files().
Fixes the following coverity complaints:
Error: RESOURCE_LEAK (CWE-772):
tools/perf/util/trace-event-read.c:343: overwrite_var: Overwriting
"sys" in "sys = read_string()" leaks the storage that "sys" points to.
tools/perf/util/trace-event-read.c:353: leaked_storage: Variable "sys"
going out of scope leaks the storage it points to.
Signed-off-by: Sanskriti Sharma <sansharm@redhat.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Link: http://lkml.kernel.org/r/1538490554-8161-6-git-send-email-sansharm@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 4 additions and 1 deletions
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@ -350,9 +350,12 @@ static int read_event_files(struct pevent *pevent)
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for (x=0; x < count; x++) {
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size = read8(pevent);
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ret = read_event_file(pevent, sys, size);
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if (ret)
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if (ret) {
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free(sys);
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return ret;
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}
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}
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free(sys);
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}
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return 0;
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}
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