Hi André, kernel test robot noticed the following build warnings: [auto build test WARNING on tip/locking/core] [also build test WARNING on tip/sched/core linus/master v6.12-rc5 next-20241101] [cannot apply to tip/x86/asm] [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] url: https://github.com/intel-lab-lkp/linux/commits/Andr-Almeida/futex-Use-explicit-sizes-for-compat_exit_robust_list/20241102-002419 base: tip/locking/core patch link: https://lore.kernel.org/r/20241101162147.284993-3-andrealmeid%40igalia.com patch subject: [PATCH v2 2/3] futex: Create set_robust_list2 config: i386-randconfig-062-20241102 (https://download.01.org/0day-ci/archive/20241103/202411030038.W5DgvCYP-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241103/202411030038.W5DgvCYP-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202411030038.W5DgvCYP-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) kernel/futex/core.c:915:59: sparse: sparse: cast removes address space '__user' of expression kernel/futex/core.c:915:59: sparse: sparse: incorrect type in argument 3 (different address spaces) @@ expected unsigned int [noderef] [usertype] __user *head @@ got unsigned int [usertype] * @@ kernel/futex/core.c:915:59: sparse: expected unsigned int [noderef] [usertype] __user *head kernel/futex/core.c:915:59: sparse: got unsigned int [usertype] * kernel/futex/core.c:1108:42: sparse: sparse: cast removes address space '__user' of expression >> kernel/futex/core.c:1108:42: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct robust_list_head32 [noderef] __user *head @@ got struct robust_list_head32 * @@ kernel/futex/core.c:1108:42: sparse: expected struct robust_list_head32 [noderef] __user *head kernel/futex/core.c:1108:42: sparse: got struct robust_list_head32 * kernel/futex/core.c: note: in included file (through include/linux/smp.h, include/linux/alloc_tag.h, include/linux/percpu.h, ...): include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true vim +1108 kernel/futex/core.c 1095 1096 static void futex_cleanup(struct task_struct *tsk) 1097 { 1098 struct robust_list2_entry *curr, *n; 1099 struct list_head *list2 = &tsk->robust_list2; 1100 1101 #ifdef CONFIG_64BIT 1102 if (unlikely(tsk->robust_list)) { 1103 exit_robust_list64(tsk, tsk->robust_list); 1104 tsk->robust_list = NULL; 1105 } 1106 #else 1107 if (unlikely(tsk->robust_list)) { > 1108 exit_robust_list32(tsk, (struct robust_list_head32 *) tsk->robust_list); 1109 tsk->robust_list = NULL; 1110 } 1111 #endif 1112 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
