Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> wrote: > Only in the case of kvzalloc. We expect kzalloc to fail, that's > why it gets NOWARN. There is no sane reason for kvzalloc to fail > so it should warn. To me a WARN() only has one purpose: It will get reported to mailing list and a developer can use that to develop a patch/fix. In memory allocation failure, there is no bug, so nothing to fix, so WARN is useless.