linux-kernel - [tip:timers/urgent] timer debug: Hide kernel addresses via %pK in /proc/timer

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Date:	Sun, 13 Feb 2011 01:34:06 GMT
From:	tip-bot for Kees Cook <kees.cook@...onical.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	torvalds@...ux-foundation.org, johnstul@...ibm.com,
	drosenberg@...curity.com, kees.cook@...onical.com,
	eugeneteo@...nel.org, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:timers/urgent] timer debug: Hide kernel addresses via %pK in /proc/timer_list

Commit-ID:  f590308536db432e4747f562b29e5858123938e9
Gitweb:     http://git.kernel.org/tip/f590308536db432e4747f562b29e5858123938e9
Author:     Kees Cook <kees.cook@...onical.com>
AuthorDate: Fri, 11 Feb 2011 19:21:25 -0800
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Sat, 12 Feb 2011 14:11:56 +0100

timer debug: Hide kernel addresses via %pK in /proc/timer_list

In the continuing effort to avoid kernel addresses leaking to
unprivileged users, this patch switches to %pK for
/proc/timer_list reporting.

Signed-off-by: Kees Cook <kees.cook@...onical.com>
Cc: John Stultz <johnstul@...ibm.com>
Cc: Dan Rosenberg <drosenberg@...curity.com>
Cc: Eugene Teo <eugeneteo@...nel.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
LKML-Reference: <20110212032125.GA23571@...flux.net>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 kernel/time/timer_list.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c
index 32a19f9..3258455 100644
--- a/kernel/time/timer_list.c
+++ b/kernel/time/timer_list.c
@@ -41,7 +41,7 @@ static void print_name_offset(struct seq_file *m, void *sym)
 	char symname[KSYM_NAME_LEN];
 
 	if (lookup_symbol_name((unsigned long)sym, symname) < 0)
-		SEQ_printf(m, "<%p>", sym);
+		SEQ_printf(m, "<%pK>", sym);
 	else
 		SEQ_printf(m, "%s", symname);
 }
@@ -112,7 +112,7 @@ next_one:
 static void
 print_base(struct seq_file *m, struct hrtimer_clock_base *base, u64 now)
 {
-	SEQ_printf(m, "  .base:       %p\n", base);
+	SEQ_printf(m, "  .base:       %pK\n", base);
 	SEQ_printf(m, "  .index:      %d\n",
 			base->index);
 	SEQ_printf(m, "  .resolution: %Lu nsecs\n",
--
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