Messages in this thread Patch in this message | | | Date | Mon, 8 Oct 2018 22:30:29 -0700 | From | tip-bot for Sanskriti Sharma <> | Subject | [tip:perf/core] perf tools: Free 'printk' string in parse_ftrace_printk() |
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Commit-ID: 9c8a182e5a73e01afd11742a2ab887bf338fdafd Gitweb: https://git.kernel.org/tip/9c8a182e5a73e01afd11742a2ab887bf338fdafd Author: Sanskriti Sharma <sansharm@redhat.com> AuthorDate: Tue, 2 Oct 2018 10:29:12 -0400 Committer: Arnaldo Carvalho de Melo <acme@redhat.com> CommitDate: Mon, 8 Oct 2018 14:23:45 -0300
perf tools: Free 'printk' string in parse_ftrace_printk()
parse_ftrace_printk() tokenizes and parses a line, calling strdup() each iteration. Add code to free this temporary format string duplicate.
Fixes the following coverity complaints:
Error: RESOURCE_LEAK (CWE-772): tools/perf/util/trace-event-parse.c:158: overwrite_var: Overwriting "printk" in "printk = strdup(fmt + 1)" leaks the storage that "printk" points to.
tools/perf/util/trace-event-parse.c:162: leaked_storage: Variable "printk" 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/1538490554-8161-4-git-send-email-sansharm@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/util/trace-event-parse.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index a4d7de1c96d1..02f97f5dd588 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -158,6 +158,7 @@ void parse_ftrace_printk(struct tep_handle *pevent, printk = strdup(fmt+1); line = strtok_r(NULL, "\n", &next); tep_register_print_string(pevent, printk, addr); + free(printk); } }
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