Date: Thu, 8 Mar 2018 07:24:47 +0100 (CET) From: Julia Lawall <julia.lawall@...6.fr> To: Matthew Wilcox <willy@...radead.org> cc: Kees Cook <keescook@...omium.org>, Andrew Morton <akpm@...ux-foundation.org>, Matthew Wilcox <mawilcox@...rosoft.com>, Linux-MM <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>, Kernel Hardening <kernel-hardening@...ts.openwall.com>, cocci@...teme.lip6.fr, Himanshu Jha <himanshujha199640@...il.com> Subject: Re: [PATCH 2/2] mm: Add kvmalloc_ab_c and kvzalloc_struct On Wed, 7 Mar 2018, Matthew Wilcox wrote: > On Wed, Mar 07, 2018 at 10:18:21PM +0100, Julia Lawall wrote: > > > Otherwise, yes, please. We could build a coccinelle rule for > > > additional replacements... > > > > A potential semantic patch and the changes it generates are attached > > below. Himanshu Jha helped with its development. Working on this > > uncovered one bug, where the allocated array is too large, because the > > size provided for it was a structure size, but actually only pointers to > > that structure were to be stored in it. > > This is cool! Thanks for doing the coccinelle patch! Diffstat: > > 50 files changed, 81 insertions(+), 124 deletions(-) > > I find that pretty compelling. I'll repost the kvmalloc_struct patch > imminently. Thanks. So it's OK to replace kmalloc and kzalloc, even though they didn't previously consider vmalloc and even though kmalloc doesn't zero? There are a few other cases that use GFP_NOFS and GFP_NOWAIT, but I didn't transform those because the comment says that the flags should be GFP_KERNEL based. Should those be transformed too? julia
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.