From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932880AbdEKRYX (ORCPT ); Thu, 11 May 2017 13:24:23 -0400 Received: from mout.gmx.net ([212.227.15.18]:52828 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932418AbdEKRYV (ORCPT ); Thu, 11 May 2017 13:24:21 -0400 Message-ID: <1494523443.25131.12.camel@gmx.de> Subject: Re: [drm:qxl] BUG: sleeping function called from invalid context - qxl_bo_kmap_atomic_page()...splat From: Mike Galbraith To: Gabriel Krisman Bertazi Cc: LKML , Dave Airlie , Gerd Hoffmann , dri-devel@lists.freedesktop.org Date: Thu, 11 May 2017 19:24:03 +0200 In-Reply-To: <1494297462.20252.9.camel@gmx.de> References: <1494239599.11523.21.camel@gmx.de> <87mvan9ljx.fsf@dilma.collabora.co.uk> <1494297462.20252.9.camel@gmx.de> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.16.5 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:ro2ANoEhIY+huw8cpbEVbDvTBrEk3lP8tC6cBlYJilPBlp2oIcD h54mnT8Jqb/Ju3Crh6T4D7jJ1b9RkejbjtyAZVjaGLlRtnc0+K3NjvicShtFPbAggPco82e hSh/9oqmAxE6hgUU9yyHaUFQ8J9GtyaRtT54OczraGzoKwLYk8Uu5Uk3fts0XHWfS3G1WIS T2AACffJJLiDZIWkIToEQ== X-UI-Out-Filterresults: notjunk:1;V01:K0:KMHjLEL34Dk=:z0kVCQPvPjbYf73wDMvgOO bNSjbS/D02CXRj9UbobT9yUnI9wsUlP/m86k6pb3zZFqzW0XsjgjWyjxWefgwmwv/e2mItIrK vTxNsDQ+292B5/8Qg6OjODiZ0AGAbha1w/59bxA/WAuDqlV6+uJacsUm07CUUQ5GHIIQLZagB hD//MuxLOpALHvTGEnPgrdsexLC+nZNxm0O3Jc4+ysGn1QPuqoXJDombrRSlTtUv7delkXa1O uznz0qvhO0mzdifjHk3VLF2SxOVP9Hf2iZua8KrX8bwB6w2wLBLfJeEDJIq4OQn6iA08ITG84 KhkrZOWIdoyjfTtEGHjP/hvGBOvH+AJpKawTwkKVCBCxMeUiiWPU7yTaXFMttjzVhJVpzJdn6 QAWTCEsOABNSVrOfigiTn8mu8YEPfOQ7+bvzS2IKN4/3KqeSo9J5Bl5PCuB/NCA9TorHSrFN7 Ka5Vq2VL1MVAf9uE0JH9o1/rMb/626OL41SjWkrO6CCEt5OTC42xNVauiAvpvE2G0cbxkwi+w oJlXvG+uh1tmHKjjBEGwraAhkq7RIy3s7skL3BiZMTQEGvReK2P5f5FU47uIZ5IgBLtO7WtDX BMxEolGtc2MXCMVutBAL55qmYPvya0GmYR0c2/fJOc2ivSiAf/DSlMeODL9QzzmaunZ+gpsqg ZH0/swbbpi8DQCAayHyNRQIFMqi75oDn6BAAhMTPVRna7Z7zKmlSz8PDvIsi+sZx6c0qqEjIW KBbu0lKxcXQ2aniKMpZQwOoUmS1FEyf7FdaPQnYYD0bU47t4rKTbWMd/VpZAItXGEAhvvdq7N m0Fo4yQ Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2017-05-09 at 04:37 +0200, Mike Galbraith wrote: > On Mon, 2017-05-08 at 16:48 -0300, Gabriel Krisman Bertazi wrote: > > > Thanks for reporting this. Can you confirm the following patch prevents > > the issue? > > Nope, it still gripes. The reason for this gripe is that we find that we don't have memory reserved.. a tad too late. Xorg-2252 [000] .... 135.409756: qxl_release_map <-qxl_cursor_atomic_update Xorg-2252 [000] .... 135.409756: qxl_bo_kmap_atomic_page <-qxl_release_map Xorg-2252 [000] .... 135.409757: qxl_bo_kmap_atomic_page: ENTER Xorg-2252 [000] .... 135.409757: ttm_mem_io_lock <-qxl_bo_kmap_atomic_page Xorg-2252 [000] .... 135.409757: ttm_mem_io_reserve <-qxl_bo_kmap_atomic_page Xorg-2252 [000] .... 135.409757: qxl_ttm_io_mem_reserve <-ttm_mem_io_reserve Xorg-2252 [000] .... 135.409757: ttm_mem_io_unlock <-qxl_bo_kmap_atomic_page Xorg-2252 [000] .... 135.409757: qxl_bo_kmap_atomic_page: PREEMPTION DISABLED Xorg-2252 [000] ...1 135.409758: qxl_bo_kmap <-qxl_cursor_atomic_update Xorg-2252 [000] ...1 135.409758: ttm_bo_kmap <-qxl_bo_kmap <== too late Xorg-2252 [000] ...1 135.409758: ttm_mem_io_reserve <-ttm_bo_kmap Xorg-2252 [000] ...1 135.409758: qxl_ttm_io_mem_reserve <-ttm_mem_io_reserve Xorg-2252 [000] ...1 135.409759: ioremap_nocache <-ttm_bo_kmap <== game over Xorg-2252 [000] ...1 135.409759: __ioremap_caller <-ioremap_nocache Xorg-2252 [000] ...1 135.409759: walk_system_ram_range <-__ioremap_caller Xorg-2252 [000] ...1 135.409759: find_next_iomem_res <-walk_system_ram_range Xorg-2252 [000] ...1 135.409759: _raw_read_lock <-find_next_iomem_res Xorg-2252 [000] ...1 135.409760: reserve_memtype <-__ioremap_caller Xorg-2252 [000] ...1 135.409760: pat_pagerange_is_ram <-reserve_memtype Xorg-2252 [000] ...1 135.409761: walk_system_ram_range <-pat_pagerange_is_ram Xorg-2252 [000] ...1 135.409761: find_next_iomem_res <-walk_system_ram_range Xorg-2252 [000] ...1 135.409761: _raw_read_lock <-find_next_iomem_res Xorg-2252 [000] ...1 135.409761: kmem_cache_alloc_trace <-reserve_memtype Xorg-2252 [000] ...1 135.409761: __might_sleep <-kmem_cache_alloc_trace Xorg-2252 [000] ...1 135.409762: ___might_sleep <-__might_sleep