Hi André, kernel test robot noticed the following build warnings:
[auto build test WARNING on 73e3f0710014fe6d4ed98cfc02292f6121db7558] url: https://github.com/intel-lab-lkp/linux/commits/Andr-Almeida/treewide-Get-rid-of-get_task_comm/20260827-152300 base: 73e3f0710014fe6d4ed98cfc02292f6121db7558 patch link: https://lore.kernel.org/r/20260827-tonyk-long_name-v5-6-5fa843782a00%40igalia.com patch subject: [PATCH v5 6/6] selftests: prctl: Add test for long thread names config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20260831/[email protected]/config) compiler: clang version 22.1.8 (https://github.com/llvm/llvm-project ca7933e47d3a3451d81e72ac174dcb5aa28b59d1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260831/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): security/smack/smack_lsm.c:150:8: error: call to undeclared function 'get_task_comm'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 150 | acc, get_task_comm(comm, tsk), note); | ^ security/smack/smack_lsm.c:150:8: note: did you mean 'get_task_mm'? include/linux/sched/mm.h:151:26: note: 'get_task_mm' declared here 151 | extern struct mm_struct *get_task_mm(struct task_struct *task); | ^ >> security/smack/smack_lsm.c:150:8: warning: format specifies type 'char *' >> but the argument has type 'int' [-Wformat] 148 | pr_info("Smack %s: (%s %s %s) %s %s\n", smk_bu_mess[rc], | ~~ | %d 149 | smk_of_task(tsp)->smk_known, oskp->smk_known, 150 | acc, get_task_comm(comm, tsk), note); | ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/printk.h:584:34: note: expanded from macro 'pr_info' 584 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) | ~~~ ^~~~~~~~~~~ include/linux/printk.h:511:60: note: expanded from macro 'printk' 511 | #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__) | ~~~ ^~~~~~~~~~~ include/linux/printk.h:483:19: note: expanded from macro 'printk_index_wrap' 483 | _p_func(_fmt, ##__VA_ARGS__); \ | ~~~~ ^~~~~~~~~~~ 1 warning and 1 error generated. vim +150 security/smack/smack_lsm.c d166c8024d620d Casey Schaufler 2014-08-27 132 fba3d32825f4bb Konstantin Andreev 2026-05-11 133 static int fba3d32825f4bb Konstantin Andreev 2026-05-11 134 smk_bu_tsk_to_obj(struct task_struct *tsk, const struct task_smack *tsp, fba3d32825f4bb Konstantin Andreev 2026-05-11 135 char *note, struct smack_known *oskp, int mode, int rc) d166c8024d620d Casey Schaufler 2014-08-27 136 { fba3d32825f4bb Konstantin Andreev 2026-05-11 137 #ifdef CONFIG_SECURITY_SMACK_BRINGUP d166c8024d620d Casey Schaufler 2014-08-27 138 char acc[SMK_NUM_ACCESS_TYPE + 1]; fba3d32825f4bb Konstantin Andreev 2026-05-11 139 char comm[TASK_COMM_LEN]; d166c8024d620d Casey Schaufler 2014-08-27 140 d166c8024d620d Casey Schaufler 2014-08-27 141 if (rc <= 0) d166c8024d620d Casey Schaufler 2014-08-27 142 return rc; bf4b2fee997997 Casey Schaufler 2015-03-21 143 if (rc > SMACK_UNCONFINED_OBJECT) bf4b2fee997997 Casey Schaufler 2015-03-21 144 rc = 0; d166c8024d620d Casey Schaufler 2014-08-27 145 d166c8024d620d Casey Schaufler 2014-08-27 146 smk_bu_mode(mode, acc); fba3d32825f4bb Konstantin Andreev 2026-05-11 147 bf4b2fee997997 Casey Schaufler 2015-03-21 148 pr_info("Smack %s: (%s %s %s) %s %s\n", smk_bu_mess[rc], fba3d32825f4bb Konstantin Andreev 2026-05-11 149 smk_of_task(tsp)->smk_known, oskp->smk_known, fba3d32825f4bb Konstantin Andreev 2026-05-11 @150 acc, get_task_comm(comm, tsk), note); d166c8024d620d Casey Schaufler 2014-08-27 151 return 0; d166c8024d620d Casey Schaufler 2014-08-27 152 #else fba3d32825f4bb Konstantin Andreev 2026-05-11 153 return rc; d166c8024d620d Casey Schaufler 2014-08-27 154 #endif fba3d32825f4bb Konstantin Andreev 2026-05-11 155 } fba3d32825f4bb Konstantin Andreev 2026-05-11 156 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
