From: Nick Desaulniers <ndesaulniers@google.com>
Date: Fri, 3 Mar 2017 23:40:12 +0000 (-0800)
Subject: tracing: do not leak kernel addresses
X-Git-Tag: MMI-RSA31.Q1-48-36-11~7
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8985bd8ae9c09b0d618c86081bb593ac18f9d463;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

tracing: do not leak kernel addresses

This likely breaks tracing tools like trace-cmd.  It logs in the same
format but now addresses are all 0x0.

Bug: 34277115
MOT-CRs-fixed: (CR)

Change-Id: Ifb0d4d2a184bf0d95726de05b1acee0287a375d9
Reviewed-on: https://gerrit.mot.com/1887836
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Wang Wang <wangwang1@mt.com>
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key
---

diff --git a/kernel/trace/trace_printk.c b/kernel/trace/trace_printk.c
index ad1d6164e946..e82cff5c842c 100644
--- a/kernel/trace/trace_printk.c
+++ b/kernel/trace/trace_printk.c
@@ -304,7 +304,7 @@ static int t_show(struct seq_file *m, void *v)
 	if (!*fmt)
 		return 0;
 
-	seq_printf(m, "0x%lx : \"", *(unsigned long *)fmt);
+	seq_printf(m, "0x%lx : \"", 0L);
 
 	/*
 	 * Tabs and new lines need to be converted.