Remove obsolete TODOs for b/38173783

The comments in the ticket indicate that this behavior
is fine and that the ticket should be closed, so we shouldn't
need pointers to the ticket.

PiperOrigin-RevId: 306266071

3 files changed, 1 insertions, 4 deletions

diff --git a/pkg/sentry/kernel/shm/shm.go b/pkg/sentry/kernel/shm/shm.go
index 208569057..f66cfcc7f 100644
--- a/pkg/sentry/kernel/shm/shm.go
+++ b/pkg/sentry/kernel/shm/shm.go
@@ -461,7 +461,7 @@ func (s *Shm) AddMapping(ctx context.Context, _ memmap.MappingSpace, _ usermem.A
 func (s *Shm) RemoveMapping(ctx context.Context, _ memmap.MappingSpace, _ usermem.AddrRange, _ uint64, _ bool) {
 	s.mu.Lock()
 	defer s.mu.Unlock()
-	// TODO(b/38173783): RemoveMapping may be called during task exit, when ctx
+	// RemoveMapping may be called during task exit, when ctx
 	// is context.Background. Gracefully handle missing clocks. Failing to
 	// update the detach time in these cases is ok, since no one can observe the
 	// omission.
diff --git a/pkg/sentry/kernel/task_context.go b/pkg/sentry/kernel/task_context.go
index c115e8d1f..9fa528384 100644
--- a/pkg/sentry/kernel/task_context.go
+++ b/pkg/sentry/kernel/task_context.go
@@ -58,7 +58,6 @@ func (tc *TaskContext) release() {
 	// Nil out pointers so that if the task is saved after release, it doesn't
 	// follow the pointers to possibly now-invalid objects.
 	if tc.MemoryManager != nil {
-		// TODO(b/38173783)
 		tc.MemoryManager.DecUsers(context.Background())
 		tc.MemoryManager = nil
 	}
diff --git a/pkg/sentry/kernel/task_signals.go b/pkg/sentry/kernel/task_signals.go
index 8802db142..6aa798346 100644
--- a/pkg/sentry/kernel/task_signals.go
+++ b/pkg/sentry/kernel/task_signals.go
@@ -513,8 +513,6 @@ func (t *Task) canReceiveSignalLocked(sig linux.Signal) bool {
 	if t.stop != nil {
 		return false
 	}
-	// - TODO(b/38173783): No special case for when t is also the sending task,
-	// because the identity of the sender is unknown.
 	// - Do not choose tasks that have already been interrupted, as they may be
 	// busy handling another signal.
 	if len(t.interruptChan) != 0 {