linux-kernel - [PATCH tip/core/rcu 01/12] lockdep: Make print

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Message-Id: <20190801223747.15560-1-paulmck@linux.ibm.com>
Date:   Thu,  1 Aug 2019 15:37:36 -0700
From:   "Paul E. McKenney" <paulmck@...ux.ibm.com>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, mingo@...nel.org,
        jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com, joel@...lfernandes.org,
        "Paul E. McKenney" <paulmck@...ux.ibm.com>
Subject: [PATCH tip/core/rcu 01/12] lockdep: Make print_lock() address visible

Security is a wonderful thing, but so is the ability to debug based on
lockdep warnings.  This commit therefore makes lockdep lock addresses
visible in the clear.

Signed-off-by: Paul E. McKenney <paulmck@...ux.ibm.com>
---
 kernel/locking/lockdep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 4861cf8e274b..4aca3f4379d2 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -620,7 +620,7 @@ static void print_lock(struct held_lock *hlock)
 		return;
 	}
 
-	printk(KERN_CONT "%p", hlock->instance);
+	printk(KERN_CONT "%px", hlock->instance);
 	print_lock_name(lock);
 	printk(KERN_CONT ", at: %pS\n", (void *)hlock->acquire_ip);
 }
-- 
2.17.1