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-rw-r--r--linux-user/aarch64/signal.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/linux-user/aarch64/signal.c b/linux-user/aarch64/signal.c
index 8fbe98d72f..9ff79da4be 100644
--- a/linux-user/aarch64/signal.c
+++ b/linux-user/aarch64/signal.c
@@ -340,6 +340,9 @@ static int target_restore_sigframe(CPUARMState *env,
__get_user(extra_size,
&((struct target_extra_context *)ctx)->size);
extra = lock_user(VERIFY_READ, extra_datap, extra_size, 0);
+ if (!extra) {
+ return 1;
+ }
break;
default: