Hi Dave, FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 2a26d99b251b8625d27aed14e97fc10707a3a81f commit: 85d1225ec066b2ef46fbd0ed1bae78ae1f3e6c91 drm/i915: Introduce & use new lightweight SGL iterators date: 5 months ago config: x86_64-randconfig-s2-10301238 (attached as .config) compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7 reproduce: git checkout 85d1225ec066b2ef46fbd0ed1bae78ae1f3e6c91 # save the attached .config to linux build tree make ARCH=x86_64 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All errors (new ones prefixed by >>): cc1: warnings being treated as errors drivers/gpu/drm/i915/i915_gem_gtt.c: In function 'gen8_ggtt_insert_entries': >> drivers/gpu/drm/i915/i915_gem_gtt.c:2367: error: 'gtt_entry' may be used >> uninitialized in this function drivers/gpu/drm/i915/i915_gem_gtt.c: In function 'gen6_ggtt_insert_entries': drivers/gpu/drm/i915/i915_gem_gtt.c:2442: error: 'gtt_entry' may be used uninitialized in this function vim +/gtt_entry +2367 drivers/gpu/drm/i915/i915_gem_gtt.c 2361 enum i915_cache_level level, u32 unused) 2362 { 2363 struct drm_i915_private *dev_priv = to_i915(vm->dev); 2364 struct i915_ggtt *ggtt = i915_vm_to_ggtt(vm); 2365 struct sgt_iter sgt_iter; 2366 gen8_pte_t __iomem *gtt_entries; > 2367 gen8_pte_t gtt_entry; 2368 dma_addr_t addr; 2369 int rpm_atomic_seq; 2370 int i = 0; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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