1 files changed, 5 insertions, 0 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 549f571aae..7d5f1234af 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4796,6 +4796,11 @@ static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
         if ((flags & ~(CSIGNAL | CLONE_NPTL_FLAGS2)) != 0) {
             return -TARGET_EINVAL;
         }
+
+        if (block_signals()) {
+            return -TARGET_ERESTARTSYS;
+        }
+
         fork_start();
         ret = fork();
         if (ret == 0) {