However this info is meaningless without saved stack traces, which are only introduced in the stackdepot patch (see "[PATCH v1 5/8] mm, kasan: Stackdepot implementation. Enable stackdepot for SLAB")
On Mon, Feb 1, 2016 at 3:15 AM, Joonsoo Kim <[email protected]> wrote: > On Thu, Jan 28, 2016 at 02:29:42PM +0100, Alexander Potapenko wrote: >> On Thu, Jan 28, 2016 at 1:37 PM, Alexander Potapenko <[email protected]> >> wrote: >> > >> > On Jan 28, 2016 8:44 AM, "Joonsoo Kim" <[email protected]> wrote: >> >> >> >> On Wed, Jan 27, 2016 at 07:25:07PM +0100, Alexander Potapenko wrote: >> >> > This patch adds KASAN hooks to SLAB allocator. >> >> > >> >> > This patch is based on the "mm: kasan: unified support for SLUB and >> >> > SLAB allocators" patch originally prepared by Dmitry Chernenkov. >> >> > >> >> > Signed-off-by: Alexander Potapenko <[email protected]> >> >> > --- >> >> > Documentation/kasan.txt | 5 ++- >> >> >> >> ... >> >> >> >> > +#ifdef CONFIG_SLAB >> >> > +struct kasan_alloc_meta *get_alloc_info(struct kmem_cache *cache, >> >> > + const void *object) >> >> > +{ >> >> > + return (void *)object + cache->kasan_info.alloc_meta_offset; >> >> > +} >> >> > + >> >> > +struct kasan_free_meta *get_free_info(struct kmem_cache *cache, >> >> > + const void *object) >> >> > +{ >> >> > + return (void *)object + cache->kasan_info.free_meta_offset; >> >> > +} >> >> > +#endif >> >> >> >> I cannot find the place to store stack info for free. get_free_info() >> >> isn't used except print_object(). Plese let me know where. >> > >> > This is covered by other patches in this patchset. > > This should be covered by this patch. Stroing and printing free_info > is already done on SLUB and it is meaningful without quarantain. > > Thanks. -- Alexander Potapenko Software Engineer Google Germany GmbH Erika-Mann-Straße, 33 80636 München Geschäftsführer: Matthew Scott Sucherman, Paul Terence Manicle Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg Diese E-Mail ist vertraulich. Wenn Sie nicht der richtige Adressat sind, leiten Sie diese bitte nicht weiter, informieren Sie den Absender und löschen Sie die E-Mail und alle Anhänge. Vielen Dank. This e-mail is confidential. If you are not the right addressee please do not forward it, please inform the sender, and please erase this e-mail including any attachments. Thanks.
