Date: Thu, 10 Dec 2020 20:44:05 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r368522 - stable/12/sys/dev/drm2 Message-ID: <202012102044.0BAKi5SQ011708@repo.freebsd.org>
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Author: jhb Date: Thu Dec 10 20:44:05 2020 New Revision: 368522 URL: https://svnweb.freebsd.org/changeset/base/368522 Log: MFC 366494: Don't permit DRM buffer mappings to be upgraded to executable. Modified: stable/12/sys/dev/drm2/drm_bufs.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/dev/drm2/drm_bufs.c ============================================================================== --- stable/12/sys/dev/drm2/drm_bufs.c Thu Dec 10 19:36:33 2020 (r368521) +++ stable/12/sys/dev/drm2/drm_bufs.c Thu Dec 10 20:44:05 2020 (r368522) @@ -1635,14 +1635,12 @@ int drm_mapbufs(struct drm_device *dev, void *data, goto done; } retcode = vm_mmap(&vms->vm_map, &virtual, map->size, - VM_PROT_READ | VM_PROT_WRITE, VM_PROT_ALL, - MAP_SHARED | MAP_NOSYNC, OBJT_DEVICE, - file_priv->minor->device, token); + VM_PROT_RW, VM_PROT_RW, MAP_SHARED | MAP_NOSYNC, + OBJT_DEVICE, file_priv->minor->device, token); } else { retcode = vm_mmap(&vms->vm_map, &virtual, dma->byte_count, - VM_PROT_READ | VM_PROT_WRITE, VM_PROT_ALL, - MAP_SHARED | MAP_NOSYNC, OBJT_DEVICE, - file_priv->minor->device, 0); + VM_PROT_RW, VM_PROT_RW, MAP_SHARED | MAP_NOSYNC, + OBJT_DEVICE, file_priv->minor->device, 0); } if (retcode) { /* Real error */
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