On Fri, May 17, 2024 at 08:00:32AM +0000, Sakari Ailus wrote: > --------8<------------- > In v4l2_async_create_ancillary_links(), ancillary links are created for > lens and flash sub-devices. These are sub-device to sub-device links and if > the async notifier is related to a V4L2 device, the source sub-device of > the ancillary link is NULL, leading to a NULL pointer dereference. Check > the notifier's sd field is non-NULL in v4l2_async_create_ancillary_links(). > --------8<------------- And a slightly different subject, too: "media: v4l: async: Fix NULL pointer dereference in adding ancillary links". No need to send v2. -- Sakari Ailus