1 files changed, 2 insertions, 1 deletions

diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index e9800b0b568..37302e86fda 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -183,7 +183,8 @@ int change_sig(int signal, int on)
 
         sigemptyset(&sigset);
         sigaddset(&sigset, signal);
-        sigprocmask(on ? SIG_UNBLOCK : SIG_BLOCK, &sigset, &old);
+        if (sigprocmask(on ? SIG_UNBLOCK : SIG_BLOCK, &sigset, &old) < 0)
+                return -errno;
         return !sigismember(&old, signal);
 }