* [PATCH URGENT for ftrace/core] lockdep: Fix error due to incorrect pointer return
@ 2018-07-28 4:15 Joel Fernandes
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From: Joel Fernandes @ 2018-07-28 4:15 UTC (permalink / raw)
To: linux-kernel, Steven Rostedt
Cc: kernel-team, Joel Fernandes (Google),
Ingo Molnar, Peter Zijlstra, Will Deacon
From: "Joel Fernandes (Google)" <joel@joelfernandes.org>
The 0-day bot caught an issue which all my tests missed (will add it
into my tests) where this_cpu_ptr is incorrectly returning the wrong
pointer from get_lock_stats. Fix it.
Fixes: f4ac253a8df0 ("lockdep: use this_cpu_ptr instead of get_cpu_var stats")
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
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 a6a6b7eb4b82..03bfaeb9f4e6 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -249,7 +249,7 @@ void clear_lock_stats(struct lock_class *class)
static struct lock_class_stats *get_lock_stats(struct lock_class *class)
{
- return &this_cpu_ptr(&cpu_lock_stats)[class - lock_classes];
+ return &this_cpu_ptr(cpu_lock_stats)[class - lock_classes];
}
static void lock_release_holdtime(struct held_lock *hlock)
--
2.18.0.345.g5c9ce644c3-goog
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