tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 534b306a9ab27f36c465a7c90a32a1b4ff3a641c commit: 09893ff02def3af3147aff056dca7bee71c432f0 [3098/3098] bpf-rvi: Add bpf_mem_failure kfunc config: x86_64-randconfig-001-20251104 (https://download.01.org/0day-ci/archive/20251105/202511051752.bxOVRS5t-lkp@i...) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251105/202511051752.bxOVRS5t-lkp@i...) 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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511051752.bxOVRS5t-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/bpf-rvi/common_kfuncs.c:27:32: warning: no previous prototype for 'bpf_mem_cgroup_from_task' [-Wmissing-prototypes] 27 | __bpf_kfunc struct mem_cgroup *bpf_mem_cgroup_from_task(struct task_struct *p) | ^~~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:36:35: warning: no previous prototype for 'bpf_task_active_pid_ns' [-Wmissing-prototypes] 36 | __bpf_kfunc struct pid_namespace *bpf_task_active_pid_ns(struct task_struct *task) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:41:17: warning: no previous prototype for 'bpf_pidns_nr_tasks' [-Wmissing-prototypes] 41 | __bpf_kfunc u64 bpf_pidns_nr_tasks(struct pid_namespace *ns) | ^~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:55:17: warning: no previous prototype for 'bpf_pidns_last_pid' [-Wmissing-prototypes] 55 | __bpf_kfunc u32 bpf_pidns_last_pid(struct pid_namespace *ns) | ^~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:84:18: warning: no previous prototype for 'bpf_si_memswinfo' [-Wmissing-prototypes] 84 | __bpf_kfunc void bpf_si_memswinfo(struct bpf_sysinfo *bsi) | ^~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:94:27: warning: no previous prototype for 'bpf_page_counter_read' [-Wmissing-prototypes] 94 | __bpf_kfunc unsigned long bpf_page_counter_read(struct page_counter *counter) | ^~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:104:18: warning: no previous prototype for 'bpf_seq_file_append' [-Wmissing-prototypes] 104 | __bpf_kfunc void bpf_seq_file_append(struct seq_file *dst, struct seq_file *src) | ^~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:118:18: warning: no previous prototype for 'bpf_get_boottime_timens' [-Wmissing-prototypes] 118 | __bpf_kfunc void bpf_get_boottime_timens(struct task_struct *tsk, struct timespec64 *boottime) | ^~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:124:27: warning: no previous prototype for 'bpf_get_total_forks' [-Wmissing-prototypes] 124 | __bpf_kfunc unsigned long bpf_get_total_forks(void) | ^~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:129:26: warning: no previous prototype for 'bpf_nr_running' [-Wmissing-prototypes] 129 | __bpf_kfunc unsigned int bpf_nr_running(void) | ^~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:134:32: warning: no previous prototype for 'bpf_nr_context_switches' [-Wmissing-prototypes] 134 | __bpf_kfunc unsigned long long bpf_nr_context_switches(void) | ^~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:139:26: warning: no previous prototype for 'bpf_nr_iowait' [-Wmissing-prototypes] 139 | __bpf_kfunc unsigned int bpf_nr_iowait(void) | ^~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:145:26: warning: no previous prototype for 'bpf_kstat_softirqs_cpu' [-Wmissing-prototypes] 145 | __bpf_kfunc unsigned int bpf_kstat_softirqs_cpu(unsigned int irq, int cpu) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:150:27: warning: no previous prototype for 'bpf_kstat_cpu_irqs_sum' [-Wmissing-prototypes] 150 | __bpf_kfunc unsigned long bpf_kstat_cpu_irqs_sum(unsigned int cpu) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:155:18: warning: no previous prototype for 'bpf_kcpustat_cpu_fetch' [-Wmissing-prototypes] 155 | __bpf_kfunc void bpf_kcpustat_cpu_fetch(struct kernel_cpustat *dst, int cpu) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:164:27: warning: no previous prototype for 'bpf_mem_file_hugepage' [-Wmissing-prototypes] 164 | __bpf_kfunc unsigned long bpf_mem_file_hugepage(void) | ^~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:169:27: warning: no previous prototype for 'bpf_mem_file_pmdmapped' [-Wmissing-prototypes] 169 | __bpf_kfunc unsigned long bpf_mem_file_pmdmapped(void) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:174:27: warning: no previous prototype for 'bpf_mem_kreclaimable' [-Wmissing-prototypes] 174 | __bpf_kfunc unsigned long bpf_mem_kreclaimable(void) | ^~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:180:27: warning: no previous prototype for 'bpf_mem_totalcma' [-Wmissing-prototypes] 180 | __bpf_kfunc unsigned long bpf_mem_totalcma(void) | ^~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:185:27: warning: no previous prototype for 'bpf_mem_freecma' [-Wmissing-prototypes] 185 | __bpf_kfunc unsigned long bpf_mem_freecma(void) | ^~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:200:17: warning: no previous prototype for 'bpf_hugetlb_report_meminfo' [-Wmissing-prototypes] 200 | __bpf_kfunc int bpf_hugetlb_report_meminfo(struct bpf_mem_hugepage *hugepage_info) | ^~~~~~~~~~~~~~~~~~~~~~~~~~

...

kernel/bpf-rvi/common_kfuncs.c:233:27: warning: no previous prototype for 'bpf_mem_failure' [-Wmissing-prototypes] 233 | __bpf_kfunc unsigned long bpf_mem_failure(void) | ^~~~~~~~~~~~~~~

vim +/bpf_mem_failure +233 kernel/bpf-rvi/common_kfuncs.c 179

180 __bpf_kfunc unsigned long bpf_mem_totalcma(void) 181 { 182 return totalcma_pages; 183 } 184 185 __bpf_kfunc unsigned long bpf_mem_freecma(void) 186 { 187 return global_zone_page_state(NR_FREE_CMA_PAGES); 188 } 189 190 struct bpf_mem_hugepage { 191 unsigned long total; 192 unsigned long free; 193 unsigned long rsvd; 194 unsigned long surp; 195 unsigned long size; 196 unsigned long hugetlb; 197 }; 198 199 #ifdef CONFIG_HUGETLB_PAGE 200 __bpf_kfunc int bpf_hugetlb_report_meminfo(struct bpf_mem_hugepage *hugepage_info) 201 { 202 struct hstate *h; 203 unsigned long total = 0; 204 205 if (!hugepages_supported()) 206 return -1; 207 208 for_each_hstate(h) { 209 unsigned long count = h->nr_huge_pages; 210 211 total += huge_page_size(h) * count; 212 213 if (h == &default_hstate) { 214 hugepage_info->total = count; 215 hugepage_info->free = h->free_huge_pages; 216 hugepage_info->rsvd = h->resv_huge_pages; 217 hugepage_info->surp = h->surplus_huge_pages; 218 hugepage_info->size = huge_page_size(h) / SZ_1K; 219 } 220 } 221 222 hugepage_info->hugetlb = total / SZ_1K; 223 return 0; 224 } 225 #else 226 __bpf_kfunc int bpf_hugetlb_report_meminfo(struct bpf_mem_hugepage *hugepage_info) 227 { 228 return -1; 229 } 230 #endif 231 232 #ifdef CONFIG_MEMORY_FAILURE 233 __bpf_kfunc unsigned long bpf_mem_failure(void) 234 { 235 return atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10); 236 } 237 #else 238 __bpf_kfunc unsigned long bpf_mem_failure(void) 239 { 240 return 0; 241 } 242 #endif 243

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