On Mon, Apr 17, 2023 at 08:32:54PM +0100, Matthew Wilcox wrote: > On Mon, Apr 17, 2023 at 03:11:57PM -0400, Mikulas Patocka wrote: > > If we use bio_for_each_folio_all on an empty bio, it will access the first > > bio vector unconditionally (it is uninitialized) and it may crash > > depending on the uninitialized data. > > Wait, how do we have an empty bio in the first place? flush bios are always empty. Not sure iterating over them makes much sense, though.
