* [drm-intel:drm-intel-gt-next 8/8] drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c:189 i915_gem_dmabuf_attach() error: uninitialized symbol 'err'.
@ 2021-07-27 4:27 kernel test robot
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From: kernel test robot @ 2021-07-27 4:27 UTC (permalink / raw)
To: kbuild
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CC: kbuild-all(a)lists.01.org
CC: intel-gfx(a)lists.freedesktop.org
CC: dri-devel(a)lists.freedesktop.org
TO: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
CC: Matthew Auld <matthew.auld@intel.com>
CC: "Michael J. Ruhl" <michael.j.ruhl@intel.com>
CC: Jason Ekstrand <jason@jlekstrand.net>
tree: git://anongit.freedesktop.org/drm-intel drm-intel-gt-next
head: cdb35d1ed6d216978521b75927acb3b8c50a6cac
commit: cdb35d1ed6d216978521b75927acb3b8c50a6cac [8/8] drm/i915/gem: Migrate to system at dma-buf attach time (v7)
:::::: branch date: 13 hours ago
:::::: commit date: 13 hours ago
config: x86_64-randconfig-m001-20210726 (attached as .config)
compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
New smatch warnings:
drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c:189 i915_gem_dmabuf_attach() error: uninitialized symbol 'err'.
Old smatch warnings:
drivers/gpu/drm/i915/gem/i915_gem_object.h:189 __i915_gem_object_lock() error: we previously assumed 'ww' could be null (see line 178)
vim +/err +189 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
346400c8010791 drivers/gpu/drm/i915/i915_gem_dmabuf.c Tiago Vignatti 2015-12-22 162
d7b2cb380b3a67 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 163 static int i915_gem_dmabuf_attach(struct dma_buf *dmabuf,
d7b2cb380b3a67 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 164 struct dma_buf_attachment *attach)
d7b2cb380b3a67 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 165 {
d7b2cb380b3a67 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 166 struct drm_i915_gem_object *obj = dma_buf_to_obj(dmabuf);
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 167 struct i915_gem_ww_ctx ww;
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 168 int err;
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 169
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 170 if (!i915_gem_object_can_migrate(obj, INTEL_REGION_SMEM))
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 171 return -EOPNOTSUPP;
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 172
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 173 for_i915_gem_ww(&ww, err, true) {
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 174 err = i915_gem_object_lock(obj, &ww);
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 175 if (err)
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 176 continue;
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 177
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 178 err = i915_gem_object_migrate(obj, &ww, INTEL_REGION_SMEM);
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 179 if (err)
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 180 continue;
d7b2cb380b3a67 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 181
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 182 err = i915_gem_object_wait_migration(obj, 0);
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 183 if (err)
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 184 continue;
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 185
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 186 err = i915_gem_object_pin_pages(obj);
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 187 }
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 188
cdb35d1ed6d216 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 @189 return err;
d7b2cb380b3a67 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 190 }
d7b2cb380b3a67 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c Thomas Hellström 2021-07-23 191
---
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2021-07-27 4:27 [drm-intel:drm-intel-gt-next 8/8] drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c:189 i915_gem_dmabuf_attach() error: uninitialized symbol 'err' kernel test robot
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