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. 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 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
