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perf header: Make topology checkers to check return value of strbuf

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Make topology checkers to check the return value of strbuf APIs so that
it can detect errors in it.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20160510054735.6158.98650.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Masami Hiramatsu 2016-05-10 14:47:35 +09:00 committed by Arnaldo Carvalho de Melo
parent 70a6898fdc
commit 642aadaa32
1 changed files with 20 additions and 11 deletions
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31
tools/perf/util/header.c
View file

@ -1819,7 +1819,8 @@ static int process_cpu_topology(struct perf_file_section *section,
ph->env.nr_sibling_cores = nr;
size += sizeof(u32);
strbuf_init(&sb, 128);
if (strbuf_init(&sb, 128) < 0)
goto free_cpu;
for (i = 0; i < nr; i++) {
str = do_read_string(fd, ph);
@ -1827,7 +1828,8 @@ static int process_cpu_topology(struct perf_file_section *section,
goto error;
/* include a NULL character at the end */
strbuf_add(&sb, str, strlen(str) + 1);
if (strbuf_add(&sb, str, strlen(str) + 1) < 0)
goto error;
size += string_size(str);
free(str);
}
@ -1849,7 +1851,8 @@ static int process_cpu_topology(struct perf_file_section *section,
goto error;
/* include a NULL character at the end */
strbuf_add(&sb, str, strlen(str) + 1);
if (strbuf_add(&sb, str, strlen(str) + 1) < 0)
goto error;
size += string_size(str);
free(str);
}
@ -1912,13 +1915,14 @@ static int process_numa_topology(struct perf_file_section *section __maybe_unuse
/* nr nodes */
ret = readn(fd, &nr, sizeof(nr));
if (ret != sizeof(nr))
goto error;
return -1;
if (ph->needs_swap)
nr = bswap_32(nr);
ph->env.nr_numa_nodes = nr;
strbuf_init(&sb, 256);
if (strbuf_init(&sb, 256) < 0)
return -1;
for (i = 0; i < nr; i++) {
/* node number */
@ -1940,15 +1944,17 @@ static int process_numa_topology(struct perf_file_section *section __maybe_unuse
mem_free = bswap_64(mem_free);
}
strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":",
node, mem_total, mem_free);
if (strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":",
node, mem_total, mem_free) < 0)
goto error;
str = do_read_string(fd, ph);
if (!str)
goto error;
/* include a NULL character at the end */
strbuf_add(&sb, str, strlen(str) + 1);
if (strbuf_add(&sb, str, strlen(str) + 1) < 0)
goto error;
free(str);
}
ph->env.numa_nodes = strbuf_detach(&sb, NULL);
@ -1982,7 +1988,8 @@ static int process_pmu_mappings(struct perf_file_section *section __maybe_unused
}
ph->env.nr_pmu_mappings = pmu_num;
strbuf_init(&sb, 128);
if (strbuf_init(&sb, 128) < 0)
return -1;
while (pmu_num) {
if (readn(fd, &type, sizeof(type)) != sizeof(type))
@ -1994,9 +2001,11 @@ static int process_pmu_mappings(struct perf_file_section *section __maybe_unused
if (!name)
goto error;
strbuf_addf(&sb, "%u:%s", type, name);
if (strbuf_addf(&sb, "%u:%s", type, name) < 0)
goto error;
/* include a NULL character at the end */
strbuf_add(&sb, "", 1);
if (strbuf_add(&sb, "", 1) < 0)
goto error;
if (!strcmp(name, "msr"))
ph->env.msr_pmu_type = type;