ss: fix directory leak when -T option is used

To get information about threads used in a process, the /proc/$PID/task
directory content is analyzed by ss code. However, the opened 'dirent'
object is not closed after use, leading to memory leaks. Add missing
closedir call in 'user_ent_hash_build' to avoid it.

Detected by valgrind: "valgrind ./misc/ss -T"

Fixes: e2267e68b9b5 ("ss: Introduce -T, --threads option")
Signed-off-by: Maxim Petrov <mmrmaximuzz@gmail.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/misc/ss.c b/misc/ss.c
index 7e67dbe4a..2628c2e04 100644
--- a/misc/ss.c
+++ b/misc/ss.c
@@ -678,6 +678,7 @@ static void user_ent_hash_build(void)
 				snprintf(name + nameoff, sizeof(name) - nameoff, "%d/", tid);
 				user_ent_hash_build_task(name, pid, tid);
 			}
+			closedir(task_dir);
 		}
 	}
 	closedir(dir);