From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu, 13 Jun 2019 12:28:42 +0000 (+0100)
Subject: drm/i915: Enable refcount debugging for default debug levels
X-Git-Tag: v5.3-rc1~81^2~16^2~62
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=5e3fb2a5b528bbb6090bea3f345eb72d8c8b808d;p=linux.git

drm/i915: Enable refcount debugging for default debug levels

refcount_t is our first line of defence against use-after-free, so let's
enable it for debugging.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190613122842.4840-1-chris@chris-wilson.co.uk
---

diff --git a/drivers/gpu/drm/i915/Kconfig.debug b/drivers/gpu/drm/i915/Kconfig.debug
index 09aa0f4c8bf1..8d922bb4d953 100644
--- a/drivers/gpu/drm/i915/Kconfig.debug
+++ b/drivers/gpu/drm/i915/Kconfig.debug
@@ -21,6 +21,7 @@ config DRM_I915_DEBUG
         depends on DRM_I915
         select DEBUG_FS
         select PREEMPT_COUNT
+        select REFCOUNT_FULL
         select I2C_CHARDEV
         select STACKDEPOT
         select DRM_DP_AUX_CHARDEV