From 1464096dd1dacc4bd0cbc9e90d67f09f47292405 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Mon, 11 Mar 2013 12:25:19 -0700 Subject: [PATCH] drm/i915: restrict kernel address leak in debugfs commit 2563a4524febe8f4a98e717e02436d1aaf672aa2 upstream. Masks kernel address info-leak in object dumps with the %pK suffix, so they cannot be used to target kernel memory corruption attacks if the kptr_restrict sysctl is set. Signed-off-by: Kees Cook Signed-off-by: Daniel Vetter [bwh: Backported to 3.2: the rest of the format string is different] Signed-off-by: Ben Hutchings --- drivers/gpu/drm/i915/i915_debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 5620192fd4dc..9b4e5c6d1cfb 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -122,7 +122,7 @@ static const char *cache_level_str(int type) static void describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj) { - seq_printf(m, "%p: %s%s %8zd %04x %04x %d %d%s%s%s", + seq_printf(m, "%pK: %s%s %8zd %04x %04x %d %d%s%s%s", &obj->base, get_pin_flag(obj), get_tiling_flag(obj), -- 2.39.2