Hi, this is a friendly reminder of this patch. Please do let me know if it needs any rework.
On Wed, Oct 08, 2025 at 11:20:15AM +0800, Shuhao Fu wrote: > A possible inconsistent refcount update has been identified in function > `nouveau_connector_detect`, which may cause a resource leak. > > After calling `pm_runtime_get_*(dev->dev)`, the usage counter of `dev->dev` > gets increased. In case function `nvif_outp_edid_get` returns negative, > function `nouveau_connector_detect` returns without decreasing the usage > counter of `dev->dev`, causing a refcount inconsistency. > > Closes: https://gitlab.freedesktop.org/drm/nouveau/-/issues/450 > Fixes: 0cd7e0718139 ("drm/nouveau/disp: add output method to fetch edid") > Signed-off-by: Shuhao Fu <[email protected]> > Cc: [email protected] > > Change in v3: > - Cc stable > Change in v2: > - Add "Fixes" and "Cc" tags > --- > drivers/gpu/drm/nouveau/nouveau_connector.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c > b/drivers/gpu/drm/nouveau/nouveau_connector.c > index 63621b151..45caccade 100644 > --- a/drivers/gpu/drm/nouveau/nouveau_connector.c > +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c > @@ -600,8 +600,10 @@ nouveau_connector_detect(struct drm_connector > *connector, bool force) > new_edid = drm_get_edid(connector, > nv_encoder->i2c); > } else { > ret = nvif_outp_edid_get(&nv_encoder->outp, (u8 > **)&new_edid); > - if (ret < 0) > - return connector_status_disconnected; > + if (ret < 0) { > + conn_status = connector_status_disconnected; > + goto out; > + } > } > > nouveau_connector_set_edid(nv_connector, new_edid); > -- > 2.39.5 >
