Re: linux-next: build failure after merge of the akpm tree

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On Thu, Dec 3, 2020 at 9:52 AM Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> Hi all,
>
> After merging the akpm tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
>
> mm/kasan/quarantine.c: In function 'quarantine_put':
> mm/kasan/quarantine.c:197:15: error: 'info' undeclared (first use in this function)
>   197 |   qlink_free(&info->quarantine_link, cache);
>       |               ^~~~
> mm/kasan/quarantine.c:197:15: note: each undeclared identifier is reported only once for each function it appears in
> mm/kasan/quarantine.c:199:3: error: 'return' with no value, in function returning non-void [-Werror=return-type]
>   199 |   return;
>       |   ^~~~~~
> mm/kasan/quarantine.c:171:6: note: declared here
>   171 | bool quarantine_put(struct kmem_cache *cache, void *object)
>       |      ^~~~~~~~~~~~~~
>
> Caused by patches
>
>   "kasan: rename get_alloc/free_info"
>   "kasan: sanitize objects when metadata doesn't fit"

Yeah, this is conflict with the "kasan: fix object remain in offline
per-cpu quarantine" patch.

> I have applied the following fix patch:
>
> From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> Date: Thu, 3 Dec 2020 19:41:49 +1100
> Subject: [PATCH] kasan-rename-get_alloc-free_info-fix
>
> Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> ---
>  mm/kasan/quarantine.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/mm/kasan/quarantine.c b/mm/kasan/quarantine.c
> index feae26ea5cbb..d98b516f372f 100644
> --- a/mm/kasan/quarantine.c
> +++ b/mm/kasan/quarantine.c
> @@ -194,9 +194,9 @@ bool quarantine_put(struct kmem_cache *cache, void *object)
>
>         q = this_cpu_ptr(&cpu_quarantine);
>         if (q->offline) {
> -               qlink_free(&info->quarantine_link, cache);
> +               qlink_free(&meta->quarantine_link, cache);
>                 local_irq_restore(flags);
> -               return;
> +               return false;
>         }
>         qlist_put(q, &meta->quarantine_link, cache->size);
>         if (unlikely(q->bytes > QUARANTINE_PERCPU_SIZE)) {
> --
> 2.29.2
>
> --
> Cheers,
> Stephen Rothwell

This fixup looks good to me. Thanks!



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