On Wed, Sep 26, 2018 at 02:17:03AM -0500, Jason Ekstrand wrote: > We attempt to get fences earlier in the hopes that everything will > already have fences and no callbacks will be needed. If we do succeed > in getting a fence, getting one a second time will result in a duplicate > ref with no unref. This is causing memory leaks in Vulkan applications > that create a lot of fences; playing for a few hours can, apparently, > bring down the system. > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107899 > Signed-off-by: Jason Ekstrand <jason@xxxxxxxxxxxxxx> Pushed to drm-misc-fixes, thanks! Sean > Cc: stable@xxxxxxxxxxxxxxx > --- > drivers/gpu/drm/drm_syncobj.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c > index adb3cb27d31e..759278fef35a 100644 > --- a/drivers/gpu/drm/drm_syncobj.c > +++ b/drivers/gpu/drm/drm_syncobj.c > @@ -97,6 +97,8 @@ static int drm_syncobj_fence_get_or_add_callback(struct drm_syncobj *syncobj, > { > int ret; > > + WARN_ON(*fence); > + > *fence = drm_syncobj_fence_get(syncobj); > if (*fence) > return 1; > @@ -743,6 +745,9 @@ static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, > > if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) { > for (i = 0; i < count; ++i) { > + if (entries[i].fence) > + continue; > + > drm_syncobj_fence_get_or_add_callback(syncobjs[i], > &entries[i].fence, > &entries[i].syncobj_cb, > -- > 2.17.1 > > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- Sean Paul, Software Engineer, Google / Chromium OS
