Messages in this thread | | | Date | Tue, 22 Nov 2022 17:30:57 -0800 (PST) | From | David Rientjes <> | Subject | Re: [PATCH v2] mm: Make ksize() a reporting-only function |
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On Thu, 17 Nov 2022, Kees Cook wrote:
> With all "silently resizing" callers of ksize() refactored, remove the > logic in ksize() that would allow it to be used to effectively change > the size of an allocation (bypassing __alloc_size hints, etc). Users > wanting this feature need to either use kmalloc_size_roundup() before an > allocation, or use krealloc() directly. > > For kfree_sensitive(), move the unpoisoning logic inline. Replace the > some of the partially open-coded ksize() in __do_krealloc with ksize() > now that it doesn't perform unpoisoning. > > Adjust the KUnit tests to match the new ksize() behavior. > > Cc: Andrey Konovalov <andreyknvl@gmail.com> > Cc: Christoph Lameter <cl@linux.com> > Cc: Pekka Enberg <penberg@kernel.org> > Cc: David Rientjes <rientjes@google.com> > Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Roman Gushchin <roman.gushchin@linux.dev> > Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> > Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> > Cc: Alexander Potapenko <glider@google.com> > Cc: Dmitry Vyukov <dvyukov@google.com> > Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> > Cc: linux-mm@kvack.org > Cc: kasan-dev@googlegroups.com > Acked-by: Vlastimil Babka <vbabka@suse.cz> > Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
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