commit 9f51ef01293233a4cf68bb35e1611fa9fce30755
author Nick Desaulniers <ndesaulniers@google.com> Fri Mar 03 15:40:12 2017 -0800
committer Nick Desaulniers <ndesaulniers@google.com> Thu Mar 16 23:29:35 2017 +0000
tree 82b70c2b1113e1c0dd27768a0c51eca41547ea16
parent 12dfc029ba33524a0b5e51c42e0bbbbdde3adc0f

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
Change-Id: Ifb0d4d2a184bf0d95726de05b1acee0287a375d9
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>

kernel/trace/trace_printk.c

diff --git a/kernel/trace/trace_printk.c b/kernel/trace/trace_printk.c
index fdb23e8..f423e8d 100644
--- a/kernel/trace/trace_printk.c
+++ b/kernel/trace/trace_printk.c
@@ -275,7 +275,7 @@
 	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.