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-rw-r--r--pkg/sentry/kernel/task_signals.go2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkg/sentry/kernel/task_signals.go b/pkg/sentry/kernel/task_signals.go
index e177562d7..3a8e61900 100644
--- a/pkg/sentry/kernel/task_signals.go
+++ b/pkg/sentry/kernel/task_signals.go
@@ -307,7 +307,7 @@ func (t *Task) SignalReturn(rt bool) (*SyscallControl, error) {
func (t *Task) Sigtimedwait(set linux.SignalSet, timeout time.Duration) (*arch.SignalInfo, error) {
// set is the set of signals we're interested in; invert it to get the set
// of signals to block.
- mask := ^set &^ UnblockableSignals
+ mask := ^(set &^ UnblockableSignals)
t.tg.signalHandlers.mu.Lock()
defer t.tg.signalHandlers.mu.Unlock()