lxc-snapshot: fix segfault

https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1751780

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

diff --git a/src/lxc/tools/lxc_snapshot.c b/src/lxc/tools/lxc_snapshot.c
index 19542b374294207515287f3edbe53c8faa9cae02..52ddd8fe9f9ebf0e5be5568df9b708e608b1c135 100644 (file)
--- a/src/lxc/tools/lxc_snapshot.c
+++ b/src/lxc/tools/lxc_snapshot.c
@@ -126,6 +126,12 @@ int main(int argc, char *argv[])
                }
        }
 
+       if (!c->lxc_conf) {
+               fprintf(stderr, "No container config specified\n");
+               lxc_container_put(c);
+               exit(EXIT_FAILURE);
+       }
+
        if (!c->may_control(c)) {
                fprintf(stderr, "Insufficent privileges to control %s\n",
                        my_args.name);