On 07/30/2015 10:12 AM, Ilia Mirkin wrote: > Is this happening with libdrm 2.4.60? If so, that's a known > (user-side) issue and should be fixed by using any version but that > one. What's the freedesktop bugzilla # for reference? Regards, Peter Hurley > On Thu, Jul 30, 2015 at 6:28 AM, Bryan O'Donoghue > <pure.logic@xxxxxxxxxxxxxxxxx> wrote: >> Ubuntu is shipping Chrome Version 44.0.2403.125 (64-bit). With this version >> of the browser and current tip-of-tree 86ea07ca846a I get the following >> error message followed by a lock-up of X. >> >> nouveau E[chrome[2737]] multiple instances of buffer 33 on validation list >> nouveau E[chrome[2737]] validate_init >> nouveau E[chrome[2737]] validate: -22 >> nouveau E[chrome[2737]] multiple instances of buffer 18 on validation list >> nouveau E[chrome[2737]] validate_init >> nouveau E[chrome[2737]] validate: -22 >> nouveau E[ PFIFO][0000:01:00.0] PFIFO: read fault at >> 0x0003e21000 [PAGE_NOT_PRESENT] from (unknown enum >> 0x00000000)/GPC0/(unknown enum 0x0000000f) on channel 0x007f80c000 >> [unknown] >> >> This patch suggests a fix for this with the kernel simply tolerating an >> application such as chrome requesting the same buffer more than once. >> >> With the version of chrome given above, you can elicit this behaviour by >> clicking on the bookmarks drop down. This will open another window on-top >> of the current window. Minus the fix included here, this will lead to hard >> lockup of all windows on the desktop. >> >> Chrome Version 44.0.2403.125 (64-bit) >> Linux 4.2.0-rc4+ 86ea07ca846a >> >> People are suggesting running chrome with -disable-gpu however it is >> possible to run Chrome in it's default mode, so long as we tolerate the >> above behaviour. >> >> http://tinyurl.com/orvbzf3 >> >> Signed-off-by: Bryan O'Donoghue <pure.logic@xxxxxxxxxxxxxxxxx> >> --- >> drivers/gpu/drm/nouveau/nouveau_gem.c | 4 +--- >> 1 file changed, 1 insertion(+), 3 deletions(-) >> >> diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c >> index af1ee51..a9694faad 100644 >> --- a/drivers/gpu/drm/nouveau/nouveau_gem.c >> +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c >> @@ -401,9 +401,7 @@ retry: >> if (nvbo->reserved_by && nvbo->reserved_by == file_priv) { >> NV_PRINTK(error, cli, "multiple instances of buffer %d on " >> "validation list\n", b->handle); >> - drm_gem_object_unreference_unlocked(gem); >> - ret = -EINVAL; >> - break; >> + continue; >> } >> >> ret = ttm_bo_reserve(&nvbo->bo, true, false, true, &op->ticket); >> -- >> 1.9.1 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
