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drm/i915: restrict kernel address leak in debugfs

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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 <keescook@chromium.org>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Kees Cook
2013-03-11 12:25:19 -07:00
committed by Daniel Vetter
parent f6161aa153
commit 2563a4524f
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/i915_debugfs.c
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@@ -103,7 +103,7 @@ static const char *cache_level_str(int type)
static void static void
describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj) describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
{ {
seq_printf(m, "%p: %s%s %8zdKiB %02x %02x %d %d %d%s%s%s", seq_printf(m, "%pK: %s%s %8zdKiB %02x %02x %d %d %d%s%s%s",
&obj->base, &obj->base,
get_pin_flag(obj), get_pin_flag(obj),
get_tiling_flag(obj), get_tiling_flag(obj),