tree: git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-android-linux-4.14.y head: 9325afe9ea703ee9446dec68ad3b687d307d7a2f commit: 2e25acf865e3c52a5f0952ae7b5aa39df2b77eeb [6598/9999] Merge branch 'android-4.14' of https://android.googlesource.com/kernel/common into android-feature-ti-linux-4.14.y config: i386-randconfig-m021-20200707 (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; smatch warnings: drivers/gpu/drm/virtio/virtgpu_kms.c:297 virtio_gpu_driver_open() warn: unsigned 'id' is never less than zero. vim +/id +297 drivers/gpu/drm/virtio/virtgpu_kms.c 62fb7a5e10962a Gerd Hoffmann 2014-10-28 278 62fb7a5e10962a Gerd Hoffmann 2014-10-28 279 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file) 62fb7a5e10962a Gerd Hoffmann 2014-10-28 280 { 62fb7a5e10962a Gerd Hoffmann 2014-10-28 281 struct virtio_gpu_device *vgdev = dev->dev_private; 62fb7a5e10962a Gerd Hoffmann 2014-10-28 282 struct virtio_gpu_fpriv *vfpriv; 62fb7a5e10962a Gerd Hoffmann 2014-10-28 283 uint32_t id; 9da8d649e4e78b Michał Mirosław 2017-08-31 284 char dbgname[TASK_COMM_LEN]; 62fb7a5e10962a Gerd Hoffmann 2014-10-28 285 62fb7a5e10962a Gerd Hoffmann 2014-10-28 286 /* can't create contexts without 3d renderer */ 62fb7a5e10962a Gerd Hoffmann 2014-10-28 287 if (!vgdev->has_virgl_3d) 62fb7a5e10962a Gerd Hoffmann 2014-10-28 288 return 0; 62fb7a5e10962a Gerd Hoffmann 2014-10-28 289 62fb7a5e10962a Gerd Hoffmann 2014-10-28 290 /* allocate a virt GPU context for this opener */ 62fb7a5e10962a Gerd Hoffmann 2014-10-28 291 vfpriv = kzalloc(sizeof(*vfpriv), GFP_KERNEL); 62fb7a5e10962a Gerd Hoffmann 2014-10-28 292 if (!vfpriv) 62fb7a5e10962a Gerd Hoffmann 2014-10-28 293 return -ENOMEM; 62fb7a5e10962a Gerd Hoffmann 2014-10-28 294 9da8d649e4e78b Michał Mirosław 2017-08-31 295 get_task_comm(dbgname, current); 62fb7a5e10962a Gerd Hoffmann 2014-10-28 296 virtio_gpu_context_create(vgdev, strlen(dbgname), dbgname, &id); f5e207228fb77b Colin Ian King 2018-11-07 @297 if (id < 0) { f5e207228fb77b Colin Ian King 2018-11-07 298 kfree(vfpriv); f5e207228fb77b Colin Ian King 2018-11-07 299 return id; f5e207228fb77b Colin Ian King 2018-11-07 300 } 62fb7a5e10962a Gerd Hoffmann 2014-10-28 301 62fb7a5e10962a Gerd Hoffmann 2014-10-28 302 vfpriv->ctx_id = id; 62fb7a5e10962a Gerd Hoffmann 2014-10-28 303 file->driver_priv = vfpriv; 62fb7a5e10962a Gerd Hoffmann 2014-10-28 304 return 0; 62fb7a5e10962a Gerd Hoffmann 2014-10-28 305 } 62fb7a5e10962a Gerd Hoffmann 2014-10-28 306 :::::: The code at line 297 was first introduced by commit :::::: f5e207228fb77bfe40b3bf744ed2d7e752dfcc4e BACKPORT: drm/virtio: fix memory leak of vfpriv on error return path :::::: TO: Colin Ian King <colin.king(a)canonical.com&gt; :::::: CC: Greg Hartman <ghartman(a)google.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org