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@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202305311221.0GtxUteW-lkp@xxxxxxxxx/ 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
