libpod: UpdateContainerStatus: do not wait for container

Commit 30e7cbc accidentally added a deadlock as Podman was waiting for the exit code to show up when the container transitioned to stopped. Code paths that require the exit code to be written (by the cleanup process) should already be using `(*Container).Wait()` in a deadlock free way. [NO NEW TESTS NEEDED] as I did not manage to a reproducer that would work in CI. Ultimately, it's a race condition. Backport-for: containers#15492 Signed-off-by: Valentin Rothberg <[email protected]>
vrothberg · Aug 28, 2022 · bd050cd · bd050cd
1 parent 754ec89
commit bd050cd
Showing 1 changed file with 0 additions and 9 deletions.
diff --git a/libpod/oci_conmon_linux.go b/libpod/oci_conmon_linux.go
@@ -337,15 +337,6 @@ func (r *ConmonOCIRuntime) UpdateContainerStatus(ctr *Container) error {
 			ctr.ID(), state.Status, define.ErrInternal)
 	}
 
-	// Only grab exit status if we were not already stopped
-	// If we were, it should already be in the database
-	if ctr.state.State == define.ContainerStateStopped && oldState != define.ContainerStateStopped {
-		if _, err := ctr.Wait(context.Background()); err != nil {
-			logrus.Errorf("Waiting for container %s to exit: %v", ctr.ID(), err)
-		}
-		return nil
-	}
-
 	// Handle ContainerStateStopping - keep it unless the container
 	// transitioned to no longer running.
 	if oldState == define.ContainerStateStopping && (ctr.state.State == define.ContainerStatePaused || ctr.state.State == define.ContainerStateRunning) {