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Date: Wed, 31 May 2023 12:20:55 +0800
From: kernel test robot <lkp@...el.com>
To: ~akihirosuda <akihirosuda@....sr.ht>, linux-kernel@...r.kernel.org,
containers@...ts.linux.dev, serge@...lyn.com, brauner@...nel.org,
paul@...l-moore.com, ebiederm@...ssion.com
Cc: oe-kbuild-all@...ts.linux.dev, suda.kyoto@...il.com,
akihiro.suda.cz@....ntt.co.jp
Subject: Re: [PATCH linux 3/3] userns: add sysctl "kernel.userns_group_range"
Hi ~akihirosuda,
kernel test robot noticed the following build warnings:
[auto build test WARNING on linux/master]
url: https://github.com/intel-lab-lkp/linux/commits/akihirosuda/group_range-allow-GID-from-2147483648-to-4294967294/20230531-030041
base: linux/master
patch link: https://lore.kernel.org/r/168547265011.24337.4306067683997517082-3%40git.sr.ht
patch subject: [PATCH linux 3/3] userns: add sysctl "kernel.userns_group_range"
config: um-x86_64_defconfig (https://download.01.org/0day-ci/archive/20230531/202305311221.0GtxUteW-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build):
# https://github.com/intel-lab-lkp/linux/commit/7d893a64ad74171c7ad9aa2296da7bc4214bdf37
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review akihirosuda/group_range-allow-GID-from-2147483648-to-4294967294/20230531-030041
git checkout 7d893a64ad74171c7ad9aa2296da7bc4214bdf37
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=um SUBARCH=x86_64 olddefconfig
make W=1 O=build_dir ARCH=um SUBARCH=x86_64 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305311221.0GtxUteW-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> kernel/user.c:31:38: warning: missing braces around initializer [-Wmissing-braces]
31 | struct user_namespace init_user_ns = {
| ^
......
40 | },
| }
......
50 | },
| }
......
60 | },
| }
61 | },
62 | .ns.count = REFCOUNT_INIT(3),
| }
......
65 | .ns.inum = PROC_USER_INIT_INO,
| }
......
76 | .range = {0, ((gid_t)~0U) - 1},
| {} { }
>> kernel/user.c:31:38: warning: missing braces around initializer [-Wmissing-braces]
31 | struct user_namespace init_user_ns = {
| ^
......
40 | },
| }
......
50 | },
| }
......
60 | },
| }
61 | },
62 | .ns.count = REFCOUNT_INIT(3),
| }
......
65 | .ns.inum = PROC_USER_INIT_INO,
| }
......
76 | .range = {0, ((gid_t)~0U) - 1},
| {} { }
>> kernel/user.c:31:38: warning: missing braces around initializer [-Wmissing-braces]
31 | struct user_namespace init_user_ns = {
| ^
......
40 | },
| }
......
50 | },
| }
......
60 | },
| }
61 | },
62 | .ns.count = REFCOUNT_INIT(3),
| }
......
65 | .ns.inum = PROC_USER_INIT_INO,
| }
......
76 | .range = {0, ((gid_t)~0U) - 1},
| {} { }
vim +31 kernel/user.c
7d893a64ad7417 Akihiro Suda 2023-05-30 26
59607db367c57f Serge E. Hallyn 2011-03-23 27 /*
59607db367c57f Serge E. Hallyn 2011-03-23 28 * userns count is 1 for root user, 1 for init_uts_ns,
59607db367c57f Serge E. Hallyn 2011-03-23 29 * and 1 for... ?
59607db367c57f Serge E. Hallyn 2011-03-23 30 */
aee16ce73c71a2 Pavel Emelyanov 2008-02-08 @31 struct user_namespace init_user_ns = {
22d917d80e8428 Eric W. Biederman 2011-11-17 32 .uid_map = {
22d917d80e8428 Eric W. Biederman 2011-11-17 33 .nr_extents = 1,
aa4bf44dc851c6 Christian Brauner 2017-10-25 34 {
22d917d80e8428 Eric W. Biederman 2011-11-17 35 .extent[0] = {
22d917d80e8428 Eric W. Biederman 2011-11-17 36 .first = 0,
22d917d80e8428 Eric W. Biederman 2011-11-17 37 .lower_first = 0,
4b06a81f1daee6 Eric W. Biederman 2012-05-19 38 .count = 4294967295U,
22d917d80e8428 Eric W. Biederman 2011-11-17 39 },
22d917d80e8428 Eric W. Biederman 2011-11-17 40 },
aa4bf44dc851c6 Christian Brauner 2017-10-25 41 },
22d917d80e8428 Eric W. Biederman 2011-11-17 42 .gid_map = {
22d917d80e8428 Eric W. Biederman 2011-11-17 43 .nr_extents = 1,
aa4bf44dc851c6 Christian Brauner 2017-10-25 44 {
22d917d80e8428 Eric W. Biederman 2011-11-17 45 .extent[0] = {
22d917d80e8428 Eric W. Biederman 2011-11-17 46 .first = 0,
22d917d80e8428 Eric W. Biederman 2011-11-17 47 .lower_first = 0,
4b06a81f1daee6 Eric W. Biederman 2012-05-19 48 .count = 4294967295U,
22d917d80e8428 Eric W. Biederman 2011-11-17 49 },
22d917d80e8428 Eric W. Biederman 2011-11-17 50 },
aa4bf44dc851c6 Christian Brauner 2017-10-25 51 },
f76d207a66c3a5 Eric W. Biederman 2012-08-30 52 .projid_map = {
f76d207a66c3a5 Eric W. Biederman 2012-08-30 53 .nr_extents = 1,
aa4bf44dc851c6 Christian Brauner 2017-10-25 54 {
f76d207a66c3a5 Eric W. Biederman 2012-08-30 55 .extent[0] = {
f76d207a66c3a5 Eric W. Biederman 2012-08-30 56 .first = 0,
f76d207a66c3a5 Eric W. Biederman 2012-08-30 57 .lower_first = 0,
f76d207a66c3a5 Eric W. Biederman 2012-08-30 58 .count = 4294967295U,
f76d207a66c3a5 Eric W. Biederman 2012-08-30 59 },
f76d207a66c3a5 Eric W. Biederman 2012-08-30 60 },
aa4bf44dc851c6 Christian Brauner 2017-10-25 61 },
265cbd62e034cb Kirill Tkhai 2020-08-03 62 .ns.count = REFCOUNT_INIT(3),
783291e6900292 Eric W. Biederman 2011-11-17 63 .owner = GLOBAL_ROOT_UID,
783291e6900292 Eric W. Biederman 2011-11-17 64 .group = GLOBAL_ROOT_GID,
435d5f4bb2ccba Al Viro 2014-10-31 65 .ns.inum = PROC_USER_INIT_INO,
33c429405a2c8d Al Viro 2014-11-01 66 #ifdef CONFIG_USER_NS
33c429405a2c8d Al Viro 2014-11-01 67 .ns.ops = &userns_operations,
33c429405a2c8d Al Viro 2014-11-01 68 #endif
9cc46516ddf497 Eric W. Biederman 2014-12-02 69 .flags = USERNS_INIT_FLAGS,
b206f281d0ee14 David Howells 2019-06-26 70 #ifdef CONFIG_KEYS
b206f281d0ee14 David Howells 2019-06-26 71 .keyring_name_list = LIST_HEAD_INIT(init_user_ns.keyring_name_list),
0f44e4d976f96c David Howells 2019-06-26 72 .keyring_sem = __RWSEM_INITIALIZER(init_user_ns.keyring_sem),
f36f8c75ae2e7d David Howells 2013-09-24 73 #endif
7d893a64ad7417 Akihiro Suda 2023-05-30 74 #ifdef CONFIG_SYSCTL
7d893a64ad7417 Akihiro Suda 2023-05-30 75 .group_range = {
7d893a64ad7417 Akihiro Suda 2023-05-30 76 .range = {0, ((gid_t)~0U) - 1},
7d893a64ad7417 Akihiro Suda 2023-05-30 77 },
7d893a64ad7417 Akihiro Suda 2023-05-30 78 #endif
aee16ce73c71a2 Pavel Emelyanov 2008-02-08 79 };
aee16ce73c71a2 Pavel Emelyanov 2008-02-08 80 EXPORT_SYMBOL_GPL(init_user_ns);
aee16ce73c71a2 Pavel Emelyanov 2008-02-08 81
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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