On 6/16/20 9:53 PM, Joe Perches wrote: > On Mon, 2020-06-15 at 21:57 -0400, Waiman Long wrote: >> v4: >> - Break out the memzero_explicit() change as suggested by Dan Carpenter >> so that it can be backported to stable. >> - Drop the "crypto: Remove unnecessary memzero_explicit()" patch for >> now as there can be a bit more discussion on what is best. It will be >> introduced as a separate patch later on after this one is merged. > > To this larger audience and last week without reply: > https://lore.kernel.org/lkml/573b3fbd5927c643920e1364230c296b23e7584d.camel@xxxxxxxxxxx/ > > Are there _any_ fastpath uses of kfree or vfree? > > Many patches have been posted recently to fix mispairings > of specific types of alloc and free functions. I've prepared a coccinelle script to highlight these mispairings in a function a couple of days ago: https://lkml.org/lkml/2020/6/5/953 I've listed all the fixes in the commit message. Not so many mispairings actually, and most of them are harmless like: kmalloc(E) -> kvfree(E) However, coccinelle script can't detect cross-functions mispairings, i.e. allocation in one function, free in another funtion. Thanks, Denis
