On Mon, 2018-10-15 at 16:02 +0200, Roger Pau Monné wrote: > > > This results in a NULL pointer BUG when blkfront_remove and > > blkif_free > > try to access the failing device's NULL struct blkfront_info. > > > > > I guess this is a candidate for backporting? > yes, I think so. At least for kernels >=4.5, which could face this issue due to commit c31ecf6c12 (this frees the struct blkinfo in the failing path of talk_to_blkback). thanks, - Vasilis