Fix: Don't dispatch uninitialized hash tables to the ht_cleanup thread

Some error-handling code paths may call ht_cleanup_push() with NULL hash
tables which will crash the clean-up thread.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Signed-off-by: David Goulet <dgoulet@efficios.com>

diff --git a/src/bin/lttng-sessiond/utils.c b/src/bin/lttng-sessiond/utils.c
index 2ff57cd1465c6071eb0d89705b061ef3dafac05f..c9c51ede5abcb2ada1ffa7253b946e1ca646467c 100644 (file)
--- a/src/bin/lttng-sessiond/utils.c
+++ b/src/bin/lttng-sessiond/utils.c
@@ -52,6 +52,9 @@ void ht_cleanup_push(struct lttng_ht *ht)
        ssize_t ret;
        int fd = ht_cleanup_pipe[1];
 
+       if (!ht) {
+               return;
+       }
        if (fd < 0)
                return;
        ret = lttng_write(fd, &ht, sizeof(ht));