Hello! This is an experimental semi-automated report about issues detected by Coverity from a scan of next-20200414 as part of the linux-next scan project: https://scan.coverity.com/projects/linux-next-weekly-scan You're getting this email because you were associated with the identified lines of code (noted below) that were touched by commits: Wed Apr 1 11:46:57 2020 +0200 1c6d567bdf73 ("drm/amdgpu: rework sched_list generation") Coverity reported the following: *** CID 1492592: (OVERRUN) /drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c: 266 in amdgpu_ring_init() 260 ring->priority = DRM_SCHED_PRIORITY_NORMAL; 261 mutex_init(&ring->priority_mutex); 262 263 if (!ring->no_scheduler) { 264 hw_ip = ring->funcs->type; 265 num_sched = &adev->gpu_sched[hw_ip][hw_prio].num_scheds; vvv CID 1492592: (OVERRUN) vvv Overrunning array "adev->gpu_sched" of 9 216-byte elements at element index 9 (byte offset 2159) using index "hw_ip" (which evaluates to 9). 266 adev->gpu_sched[hw_ip][hw_prio].sched[(*num_sched)++] = 267 &ring->sched; 268 } 269 270 for (i = 0; i < DRM_SCHED_PRIORITY_MAX; ++i) 271 atomic_set(&ring->num_jobs[i], 0); /drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c: 265 in amdgpu_ring_init() 259 ring->max_dw = max_dw; 260 ring->priority = DRM_SCHED_PRIORITY_NORMAL; 261 mutex_init(&ring->priority_mutex); 262 263 if (!ring->no_scheduler) { 264 hw_ip = ring->funcs->type; vvv CID 1492592: (OVERRUN) vvv Overrunning array "adev->gpu_sched" of 9 216-byte elements at element index 9 (byte offset 2159) using index "hw_ip" (which evaluates to 9). 265 num_sched = &adev->gpu_sched[hw_ip][hw_prio].num_scheds; 266 adev->gpu_sched[hw_ip][hw_prio].sched[(*num_sched)++] = 267 &ring->sched; 268 } 269 270 for (i = 0; i < DRM_SCHED_PRIORITY_MAX; ++i) If this is a false positive, please let us know so we can mark it as such, or teach the Coverity rules to be smarter. If not, please make sure fixes get into linux-next. :) For patches fixing this, please include these lines (but double-check the "Fixes" first): Reported-by: coverity-bot <keescook+coverity-bot@xxxxxxxxxxxx> Addresses-Coverity-ID: 1492592 ("OVERRUN") Fixes: 1c6d567bdf73 ("drm/amdgpu: rework sched_list generation") Thanks for your attention! -- Coverity-bot
