The requested resources should be closed before return in main(), otherwise resource leak will occur
Signed-off-by: Zhu Jun zhujun2@cmss.chinamobile.com --- tools/testing/selftests/bpf/test_sockmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index a34e95040994..03d5dd617c4a 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -2092,7 +2092,7 @@ int main(int argc, char **argv) if (err) { fprintf(stderr, "populate program: (%s) %s\n", bpf_file, strerror(errno)); - return 1; + goto out; } running = 1;
On 6/27/24 8:01 AM, Zhu Jun wrote:
The requested resources should be closed before return in main(), otherwise resource leak will occur
Signed-off-by: Zhu Jun zhujun2@cmss.chinamobile.com
tools/testing/selftests/bpf/test_sockmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index a34e95040994..03d5dd617c4a 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -2092,7 +2092,7 @@ int main(int argc, char **argv) if (err) { fprintf(stderr, "populate program: (%s) %s\n", bpf_file, strerror(errno));
return 1;
} running = 1;goto out;
There's one more when cgroup_setup_and_join() fails a bit higher up where we end up leaking options.whitelist/options.blacklist. Maybe could you reorder the free() towards the end, add a new label, set err to cg_fd and jump there.
Thanks, Daniel
The requested resources should be closed before return in main(), otherwise resource leak will occur
Signed-off-by: Zhu Jun zhujun2@cmss.chinamobile.com --- tools/testing/selftests/bpf/test_sockmap.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index a34e95040994..d51af986d9d8 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -2075,8 +2075,10 @@ int main(int argc, char **argv)
if (!cg_fd) { cg_fd = cgroup_setup_and_join(CG_PATH); - if (cg_fd < 0) - return cg_fd; + if (cg_fd < 0) { + err = cg_fd; + goto out1; + } cg_created = 1; }
@@ -2092,7 +2094,7 @@ int main(int argc, char **argv) if (err) { fprintf(stderr, "populate program: (%s) %s\n", bpf_file, strerror(errno)); - return 1; + goto out; } running = 1;
@@ -2105,13 +2107,14 @@ int main(int argc, char **argv)
err = run_options(&options, cg_fd, test); out: + close(cg_fd); + if (cg_created) + cleanup_cgroup_environment(); +out1: if (options.whitelist) free(options.whitelist); if (options.blacklist) free(options.blacklist); - close(cg_fd); - if (cg_created) - cleanup_cgroup_environment(); return err; }
On Sun, Jun 30, 2024 at 07:13:31PM -0700, Zhu Jun wrote:
The requested resources should be closed before return in main(), otherwise resource leak will occur
Signed-off-by: Zhu Jun zhujun2@cmss.chinamobile.com
could you please send this not as reply but as a separate patch with v2
tools/testing/selftests/bpf/test_sockmap.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index a34e95040994..d51af986d9d8 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -2075,8 +2075,10 @@ int main(int argc, char **argv) if (!cg_fd) { cg_fd = cgroup_setup_and_join(CG_PATH);
if (cg_fd < 0)
return cg_fd;
if (cg_fd < 0) {
err = cg_fd;
goto out1;
cg_created = 1; }}
@@ -2092,7 +2094,7 @@ int main(int argc, char **argv) if (err) { fprintf(stderr, "populate program: (%s) %s\n", bpf_file, strerror(errno));
return 1;
} running = 1;goto out;
@@ -2105,13 +2107,14 @@ int main(int argc, char **argv) err = run_options(&options, cg_fd, test); out:
could we check for cg_fd >= 0 and have just one out label? like:
out: if (cg_fd >= 0) close(cf_fd); if (cg_created) ...
thanks, jirka
- close(cg_fd);
- if (cg_created)
cleanup_cgroup_environment();
+out1: if (options.whitelist) free(options.whitelist); if (options.blacklist) free(options.blacklist);
- close(cg_fd);
- if (cg_created)
return err;cleanup_cgroup_environment();
} -- 2.17.1
linux-kselftest-mirror@lists.linaro.org