| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 048/222] perf tools: Free temporary sys string in read_event_files() | Date | Sun, 11 Nov 2018 14:22:25 -0800 |
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4.14-stable review patch. If anyone has any objections, please let me know.
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From: Sanskriti Sharma <sansharm@redhat.com>
[ Upstream commit 1e44224fb0528b4c0cc176bde2bb31e9127eb14b ]
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> --- tools/perf/util/trace-event-read.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
--- a/tools/perf/util/trace-event-read.c +++ b/tools/perf/util/trace-event-read.c @@ -350,9 +350,12 @@ static int read_event_files(struct peven for (x=0; x < count; x++) { size = read8(pevent); ret = read_event_file(pevent, sys, size); - if (ret) + if (ret) { + free(sys); return ret; + } } + free(sys); } return 0; }
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