android: binder: Rate-limit debug and userspace triggered err msgs
Use rate-limited debug messages where userspace can trigger
excessive log spams.
Acked-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Sherry Yang <sherryy@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: Ic789d9165479d56a9599ab016d38b07d2e0681a7
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index 735b35e..27807e4 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -71,6 +71,7 @@
#include <linux/pid_namespace.h>
#include <linux/security.h>
#include <linux/spinlock.h>
+#include <linux/ratelimit.h>
#include <uapi/linux/android/binder.h>
#include <uapi/linux/sched/types.h>
@@ -149,13 +150,13 @@
#define binder_debug(mask, x...) \
do { \
if (binder_debug_mask & mask) \
- pr_info(x); \
+ pr_info_ratelimited(x); \
} while (0)
#define binder_user_error(x...) \
do { \
if (binder_debug_mask & BINDER_DEBUG_USER_ERROR) \
- pr_info(x); \
+ pr_info_ratelimited(x); \
if (binder_stop_on_user_error) \
binder_stop_on_user_error = 2; \
} while (0)