Messages in this thread Patch in this message | | | From | Joel Fernandes <> | Subject | [PATCH URGENT for ftrace/core] lockdep: Fix error due to incorrect pointer return | Date | Fri, 27 Jul 2018 21:15:41 -0700 |
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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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