From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Mon, 1 Feb 2016 13:06:57 +0000 (+0100)
Subject: s390/stacktrace: add missing end marker
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f6331aaccbd980a49bff1559d66abcbd46af5b0a;p=linux-beck.git

s390/stacktrace: add missing end marker

save_stack_trace() did not write the ULONG_MAX end marker if there is
enough space left. So simply follow x86 and arm64.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Tested-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/arch/s390/kernel/stacktrace.c b/arch/s390/kernel/stacktrace.c
index 225bed00aa92..75e6ea930692 100644
--- a/arch/s390/kernel/stacktrace.c
+++ b/arch/s390/kernel/stacktrace.c
@@ -79,6 +79,8 @@ void save_stack_trace(struct stack_trace *trace)
 	save_context_stack(trace, new_sp,
 			   S390_lowcore.thread_info,
 			   S390_lowcore.thread_info + THREAD_SIZE, 1);
+	if (trace->nr_entries < trace->max_entries)
+		trace->entries[trace->nr_entries++] = ULONG_MAX;
 }
 EXPORT_SYMBOL_GPL(save_stack_trace);