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SubjectRe: [PATCH] mm/slab: fix race with dereferencing NULL ptr in alloc_calls_show
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On 02/02/2016 06:19 PM, kbuild test robot wrote:
> Hi Dmitry,
>
> [auto build test ERROR on v4.5-rc2]
> [also build test ERROR on next-20160201]
> [if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
>
> url: https://github.com/0day-ci/linux/commits/Dmitry-Safonov/mm-slab-fix-race-with-dereferencing-NULL-ptr-in-alloc_calls_show/20160202-230449
> config: i386-randconfig-x005-02010231 (attached as .config)
> reproduce:
> # save the attached .config to linux build tree
> make ARCH=i386
Thanks little robot, will resend fixed v2 right soon.
>
> All errors (new ones prefixed by >>):
>
> mm/slab_common.c: In function 'memcg_destroy_kmem_caches':
>>> mm/slab_common.c:613:3: error: implicit declaration of function 'sysfs_slab_remove' [-Werror=implicit-function-declaration]
> sysfs_slab_remove(s);
> ^
> cc1: some warnings being treated as errors
>
> vim +/sysfs_slab_remove +613 mm/slab_common.c
>
> 607
> 608 mutex_lock(&slab_mutex);
> 609 list_for_each_entry_safe(s, s2, &slab_caches, list) {
> 610 if (is_root_cache(s) || s->memcg_params.memcg != memcg)
> 611 continue;
> 612
> > 613 sysfs_slab_remove(s);
> 614
> 615 /*
> 616 * The cgroup is about to be freed and therefore has no charges
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation


--
Regards,
Dmitry Safonov

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