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perf test: Avoid shell test description infinite loop

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for_each_shell_test() is already strict in expecting tests to be files
and executable. It is sometimes possible when it iterates over all files
that it finds one that is executable and lacks a newline character. When
this happens the loop never terminates as it doesn't check for EOF.

Add the EOF check to make this loop at least bounded by the file size.

If the description is returned as NULL then also skip the test.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Marco Elver <elver@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Sohaib Mohamed <sohaib.amhmd@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20220517204144.645913-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2022-05-17 13:41:44 -07:00 committed by Arnaldo Carvalho de Melo
parent 01b28e4a58
commit caaaa55477
1 changed files with 6 additions and 2 deletions
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8
tools/perf/tests/builtin-test.c
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@ -279,6 +279,7 @@ static const char *shell_test__description(char *description, size_t size,
{
FILE *fp;
char filename[PATH_MAX];
int ch;
path__join(filename, sizeof(filename), path, name);
fp = fopen(filename, "r");
@ -286,7 +287,9 @@ static const char *shell_test__description(char *description, size_t size,
return NULL;
/* Skip shebang */
while (fgetc(fp) != '\n');
do {
ch = fgetc(fp);
} while (ch != EOF && ch != '\n');
description = fgets(description, size, fp);
fclose(fp);
@ -417,7 +420,8 @@ static int run_shell_tests(int argc, const char *argv[], int i, int width,
.priv = &st,
};
if (!perf_test__matches(test_suite.desc, curr, argc, argv))
if (test_suite.desc == NULL ||
!perf_test__matches(test_suite.desc, curr, argc, argv))
continue;
st.file = ent->d_name;