Hello! This is an experimental automated report about issues detected by Coverity from a scan of next-20191031 as part of the linux-next weekly 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 recent commits: 9408cc94eb04 ("drm/dp_mst: Handle UP requests asynchronously") Coverity reported the following: *** CID 1487392: Null pointer dereferences (FORWARD_NULL) /drivers/gpu/drm/drm_dp_mst_topology.c: 3710 in drm_dp_mst_process_up_req() 3704 3705 if (msg->req_type == DP_CONNECTION_STATUS_NOTIFY) 3706 guid = msg->u.conn_stat.guid; 3707 else if (msg->req_type == DP_RESOURCE_STATUS_NOTIFY) 3708 guid = msg->u.resource_stat.guid; 3709 vvv CID 1487392: Null pointer dereferences (FORWARD_NULL) vvv Passing null pointer "guid" to "drm_dp_get_mst_branch_device_by_guid", which dereferences it. 3710 mstb = drm_dp_get_mst_branch_device_by_guid(mgr, guid); 3711 } else { 3712 mstb = drm_dp_get_mst_branch_device(mgr, hdr->lct, hdr->rad); 3713 } 3714 3715 if (!mstb) { 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: 1487392 ("Null pointer dereferences") Fixes: 9408cc94eb04 ("drm/dp_mst: Handle UP requests asynchronously") Thanks for your attention! -- Coverity-bot
