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From:   "Song, Xiongwei" <Xiongwei.Song@windriver.com>
To:     kernel test robot <lkp@intel.com>,
        "sxwjean@me.com" <sxwjean@me.com>, "cl@linux.com" <cl@linux.com>,
        "penberg@kernel.org" <penberg@kernel.org>,
        "rientjes@google.com" <rientjes@google.com>,
        "iamjoonsoo.kim@lge.com" <iamjoonsoo.kim@lge.com>,
        "akpm@linux-foundation.org" <akpm@linux-foundation.org>,
        "vbabka@suse.cz" <vbabka@suse.cz>,
        "roman.gushchin@linux.dev" <roman.gushchin@linux.dev>,
        "42.hyeyoo@gmail.com" <42.hyeyoo@gmail.com>,
        "keescook@chromium.org" <keescook@chromium.org>
CC:     "oe-kbuild-all@lists.linux.dev" <oe-kbuild-all@lists.linux.dev>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-hardening@vger.kernel.org" <linux-hardening@vger.kernel.org>
Subject: RE: [PATCH 2/5] slub: Put objects_show() into CONFIG_SLUB_DEBUG
 enabled block
Thread-Topic: [PATCH 2/5] slub: Put objects_show() into CONFIG_SLUB_DEBUG
 enabled block
Thread-Index: AQHZbhU8aeWiQXUXRk+bSdhl9wcU9K8phagAgAWVaRA=
Date:   Mon, 17 Apr 2023 07:12:16 +0000
Message-ID: <PH0PR11MB5192D219F650B74F6339206BEC9C9@PH0PR11MB5192.namprd11.prod.outlook.com>
References: <20230413143452.211250-3-sxwjean@me.com>
 <202304140110.lzjsYh25-lkp@intel.com>
In-Reply-To: <202304140110.lzjsYh25-lkp@intel.com>
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Sorry, the diff should be:

diff --git a/mm/slub.c b/mm/slub.c
index 28ca576d988d..0d99440727a5 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -5613,12 +5613,6 @@ static ssize_t cpu_slabs_show(struct kmem_cache *s, =
char *buf)
 }
 SLAB_ATTR_RO(cpu_slabs);

-static ssize_t objects_show(struct kmem_cache *s, char *buf)
-{
-       return show_slab_objects(s, buf, SO_ALL|SO_OBJECTS);
-}
-SLAB_ATTR_RO(objects);
-
 static ssize_t objects_partial_show(struct kmem_cache *s, char *buf)
 {
        return show_slab_objects(s, buf, SO_PARTIAL|SO_OBJECTS);
@@ -5713,6 +5707,12 @@ static ssize_t total_objects_show(struct kmem_cache =
*s, char *buf)
 }
 SLAB_ATTR_RO(total_objects);

+static ssize_t objects_show(struct kmem_cache *s, char *buf)
+{
+       return show_slab_objects(s, buf, SO_ALL|SO_OBJECTS);
+}
+SLAB_ATTR_RO(objects);
+
 static ssize_t sanity_checks_show(struct kmem_cache *s, char *buf)
 {
        return sysfs_emit(buf, "%d\n", !!(s->flags & SLAB_CONSISTENCY_CHECK=
S));
@@ -5944,7 +5944,6 @@ static struct attribute *slab_attrs[] =3D {
        &order_attr.attr,
        &min_partial_attr.attr,
        &cpu_partial_attr.attr,
-       &objects_attr.attr,
        &objects_partial_attr.attr,
        &partial_attr.attr,
        &cpu_slabs_attr.attr,
@@ -5958,6 +5957,7 @@ static struct attribute *slab_attrs[] =3D {
        &slabs_cpu_partial_attr.attr,
 #ifdef CONFIG_SLUB_DEBUG
        &total_objects_attr.attr,
+       &objects_attr.attr,
        &slabs_attr.attr,
        &sanity_checks_attr.attr,
        &trace_attr.attr,

Regards,
Xiongwei

> -----Original Message-----
> From: kernel test robot <lkp@intel.com>
> Sent: 2023=1B$BG/=1B(B4=1B$B7n=1B(B14=1B$BF|=1B(B 1:54
> To: sxwjean@me.com; cl@linux.com; penberg@kernel.org;
> rientjes@google.com; iamjoonsoo.kim@lge.com; akpm@linux-
> foundation.org; vbabka@suse.cz; roman.gushchin@linux.dev;
> 42.hyeyoo@gmail.com; keescook@chromium.org
> Cc: oe-kbuild-all@lists.linux.dev; linux-mm@kvack.org; linux-
> kernel@vger.kernel.org; linux-hardening@vger.kernel.org; Song, Xiongwei
> <Xiongwei.Song@windriver.com>
> Subject: Re: [PATCH 2/5] slub: Put objects_show() into
> CONFIG_SLUB_DEBUG enabled block
>=20
> CAUTION: This email comes from a non Wind River email account!
> Do not click links or open attachments unless you recognize the sender an=
d
> know the content is safe.
>=20
> Hi,
>=20
> kernel test robot noticed the following build errors:
>=20
> [auto build test ERROR on vbabka-slab/for-next]
> [also build test ERROR on linus/master v6.3-rc6 next-20230412]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
>=20
> url:    https://github.com/intel-lab-lkp/linux/commits/sxwjean-me-com/slu=
b-
> Correct-the-error-code-when-slab_kset-is-NULL/20230413-223743
> base:   git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git for=
-next
> patch link:    https://lore.kernel.org/r/20230413143452.211250-3-
> sxwjean%40me.com
> patch subject: [PATCH 2/5] slub: Put objects_show() into
> CONFIG_SLUB_DEBUG enabled block
> config: i386-randconfig-a012-20230410 (https://download.01.org/0day-
> ci/archive/20230414/202304140110.lzjsYh25-lkp@intel.com/config)
> compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
> reproduce (this is a W=3D1 build):
>         # https://github.com/intel-lab-
> lkp/linux/commit/356157a450e3905cdc07fd0e77c4ac42974706c7
>         git remote add linux-review https://github.com/intel-lab-lkp/linu=
x
>         git fetch --no-tags linux-review sxwjean-me-com/slub-Correct-the-=
error-
> code-when-slab_kset-is-NULL/20230413-223743
>         git checkout 356157a450e3905cdc07fd0e77c4ac42974706c7
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         make W=3D1 O=3Dbuild_dir ARCH=3Di386 olddefconfig
>         make W=3D1 O=3Dbuild_dir ARCH=3Di386 SHELL=3D/bin/bash
>=20
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@intel.com>
> | Link: https://lore.kernel.org/oe-kbuild-all/202304140110.lzjsYh25-
> lkp@intel.com/
>=20
> All errors (new ones prefixed by >>):
>=20
> >> mm/slub.c:5947:10: error: 'objects_attr' undeclared here (not in a
> function); did you mean 'object_size_attr'?
>     5947 |         &objects_attr.attr,
>          |          ^~~~~~~~~~~~
>          |          object_size_attr
>=20
>=20
> vim +5947 mm/slub.c
>=20
> b84e04f1baeebe6 Imran Khan        2022-08-15  5939
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5940  static struct attribu=
te
> *slab_attrs[] =3D {
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5941      &slab_size_attr.a=
ttr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5942
> &object_size_attr.attr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5943
> &objs_per_slab_attr.attr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5944      &order_attr.attr,
> 73d342b169db700 David Rientjes    2009-02-22  5945      &min_partial_attr=
.attr,
> 49e2258586b4236 Christoph Lameter 2011-08-09  5946
> &cpu_partial_attr.attr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06 @5947      &objects_attr.att=
r,
> 205ab99dd103e3d Christoph Lameter 2008-04-14  5948
> &objects_partial_attr.attr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5949      &partial_attr.att=
r,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5950      &cpu_slabs_attr.a=
ttr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5951      &ctor_attr.attr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5952      &aliases_attr.att=
r,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5953      &align_attr.attr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5954
> &hwcache_align_attr.attr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5955
> &reclaim_account_attr.attr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5956
> &destroy_by_rcu_attr.attr,
> a5a84755c590041 Christoph Lameter 2010-10-05  5957      &shrink_attr.attr=
,
> 49e2258586b4236 Christoph Lameter 2011-08-09  5958
> &slabs_cpu_partial_attr.attr,
> ab4d5ed5eeda4f5 Christoph Lameter 2010-10-05  5959  #ifdef
> CONFIG_SLUB_DEBUG
> a5a84755c590041 Christoph Lameter 2010-10-05  5960
> &total_objects_attr.attr,
> a5a84755c590041 Christoph Lameter 2010-10-05  5961      &slabs_attr.attr,
> a5a84755c590041 Christoph Lameter 2010-10-05  5962
> &sanity_checks_attr.attr,
> a5a84755c590041 Christoph Lameter 2010-10-05  5963      &trace_attr.attr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5964      &red_zone_attr.at=
tr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5965      &poison_attr.attr=
,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5966      &store_user_attr.=
attr,
> 53e15af03be4fda Christoph Lameter 2007-05-06  5967      &validate_attr.at=
tr,
> ab4d5ed5eeda4f5 Christoph Lameter 2010-10-05  5968  #endif
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5969  #ifdef
> CONFIG_ZONE_DMA
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5970
> &cache_dma_attr.attr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5971  #endif
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  5972  #ifdef CONFIG_NUMA
> 9824601ead957a2 Christoph Lameter 2008-01-07  5973
> &remote_node_defrag_ratio_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5974  #endif
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5975  #ifdef
> CONFIG_SLUB_STATS
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5976
> &alloc_fastpath_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5977
> &alloc_slowpath_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5978
> &free_fastpath_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5979
> &free_slowpath_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5980
> &free_frozen_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5981
> &free_add_partial_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5982
> &free_remove_partial_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5983
> &alloc_from_partial_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5984      &alloc_slab_attr.=
attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5985      &alloc_refill_att=
r.attr,
> e36a2652d7d1ad9 Christoph Lameter 2011-06-01  5986
> &alloc_node_mismatch_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5987      &free_slab_attr.a=
ttr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5988
> &cpuslab_flush_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5989
> &deactivate_full_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5990
> &deactivate_empty_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5991
> &deactivate_to_head_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5992
> &deactivate_to_tail_attr.attr,
> 8ff12cfc009a2a3 Christoph Lameter 2008-02-07  5993
> &deactivate_remote_frees_attr.attr,
> 03e404af26dc2ea Christoph Lameter 2011-06-01  5994
> &deactivate_bypass_attr.attr,
> 65c3376aaca96c6 Christoph Lameter 2008-04-14  5995
> &order_fallback_attr.attr,
> b789ef518b2a723 Christoph Lameter 2011-06-01  5996
> &cmpxchg_double_fail_attr.attr,
> b789ef518b2a723 Christoph Lameter 2011-06-01  5997
> &cmpxchg_double_cpu_fail_attr.attr,
> 49e2258586b4236 Christoph Lameter 2011-08-09  5998
> &cpu_partial_alloc_attr.attr,
> 49e2258586b4236 Christoph Lameter 2011-08-09  5999
> &cpu_partial_free_attr.attr,
> 8028dcea8abbbd5 Alex Shi          2012-02-03  6000
> &cpu_partial_node_attr.attr,
> 8028dcea8abbbd5 Alex Shi          2012-02-03  6001
> &cpu_partial_drain_attr.attr,
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  6002  #endif
> 4c13dd3b48fcb6f Dmitry Monakhov   2010-02-26  6003  #ifdef
> CONFIG_FAILSLAB
> 4c13dd3b48fcb6f Dmitry Monakhov   2010-02-26  6004      &failslab_attr.at=
tr,
> 4c13dd3b48fcb6f Dmitry Monakhov   2010-02-26  6005  #endif
> 346907ceb9d11b9 Vlastimil Babka   2022-11-16  6006  #ifdef
> CONFIG_HARDENED_USERCOPY
> 8eb8284b4129061 David Windsor     2017-06-10  6007      &usersize_attr.at=
tr,
> 346907ceb9d11b9 Vlastimil Babka   2022-11-16  6008  #endif
> b84e04f1baeebe6 Imran Khan        2022-08-15  6009  #ifdef CONFIG_KFENCE
> b84e04f1baeebe6 Imran Khan        2022-08-15  6010      &skip_kfence_attr=
.attr,
> b84e04f1baeebe6 Imran Khan        2022-08-15  6011  #endif
> 4c13dd3b48fcb6f Dmitry Monakhov   2010-02-26  6012
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  6013      NULL
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  6014  };
> 81819f0fc8285a2 Christoph Lameter 2007-05-06  6015
>=20
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests