Re: [PATCH 6.1.y] drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create

[Greg KH <greg@kroah.com>]

On Mon, Aug 21, 2023 at 07:59:18PM +0200, Karol Herbst wrote:
> We can't simply free the connector after calling drm_connector_init on it.
> We need to clean up the drm side first.
> 
> It might not fix all regressions from commit 2b5d1c29f6c4
> ("drm/nouveau/disp: PIOR DP uses GPIO for HPD, not PMGR AUX interrupts"),
> but at least it fixes a memory corruption in error handling related to
> that commit.
> 
> Link: https://lore.kernel.org/lkml/20230806213107.GFZNARG6moWpFuSJ9W@fat_crate.local/
> Fixes: 95983aea8003 ("drm/nouveau/disp: add connector class")
> Signed-off-by: Karol Herbst <kherbst@redhat.com>
> Reviewed-by: Lyude Paul <lyude@redhat.com>
> Link: https://patchwork.freedesktop.org/patch/msgid/20230814144933.3956959-1-kherbst@redhat.com
> (cherry picked from commit 1b254b791d7b7dea6e8adc887fbbd51746d8bb27)
> Signed-off-by: Karol Herbst <kherbst@redhat.com>
> ---
>  drivers/gpu/drm/nouveau/nouveau_connector.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)

Now queued up, thanks.

greg k-h