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-rw-r--r--kernel/signal.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index 887f2fe..f05f4c4 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -3102,6 +3102,12 @@ do_sigaltstack (const stack_t __user *uss, stack_t __user *uoss, unsigned long s
out:
return error;
}
+#ifdef CONFIG_GENERIC_SIGALTSTACK
+SYSCALL_DEFINE2(sigaltstack,const stack_t __user *,uss, stack_t __user *,uoss)
+{
+ return do_sigaltstack(uss, uoss, current_user_stack_pointer());
+}
+#endif
int restore_altstack(const stack_t __user *uss)
{
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