1 files changed, 9 insertions, 0 deletions

diff --git a/arch/s390/kernel/uprobes.c b/arch/s390/kernel/uprobes.c
index d9d1f512f019..5007fac01bb5 100644
--- a/arch/s390/kernel/uprobes.c
+++ b/arch/s390/kernel/uprobes.c
@@ -150,6 +150,15 @@ unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline,
         return orig;
 }
 
+bool arch_uretprobe_is_alive(struct return_instance *ret, enum rp_check ctx,
+                             struct pt_regs *regs)
+{
+        if (ctx == RP_CHECK_CHAIN_CALL)
+                return user_stack_pointer(regs) <= ret->stack;
+        else
+                return user_stack_pointer(regs) < ret->stack;
+}
+
 /* Instruction Emulation */
 
 static void adjust_psw_addr(psw_t *psw, unsigned long len)