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| ^~ mm/hugetlb_cgroup.c:829:3: note: 'snprintf' output between 2 and 1656 bytes into a destination of size 64 829 | snprintf(cft->name, MAX_CFTYPE_NAME, "%s.%s", buf, tmpl->name); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ mm/hugetlb_cgroup.c:829:44: warning: '%s' directive output may be truncated writing up to 2087 bytes into a region of size between 32 and 63 [-Wformat-truncation=] 829 | snprintf(cft->name, MAX_CFTYPE_NAME, "%s.%s", buf, tmpl->name); | ^~ mm/hugetlb_cgroup.c:829:3: note: 'snprintf' output between 2 and 2120 bytes into a destination of size 64 829 | snprintf(cft->name, MAX_CFTYPE_NAME, "%s.%s", buf, tmpl->name); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +829 mm/hugetlb_cgroup.c 815 816 static void __init 817 hugetlb_cgroup_cfttypes_init(struct hstate *h, struct cftype *cft, 818 struct cftype *tmpl, int tmpl_size) 819 { 820 char buf[32]; 821 int i, idx = hstate_index(h); 822 823 /* format the size */ 824 mem_fmt(buf, sizeof(buf), huge_page_size(h)); 825 826 for (i = 0; i < tmpl_size; cft++, tmpl++, i++) { 827 *cft = *tmpl; 828 /* rebuild the name */ > 829 snprintf(cft->name, MAX_CFTYPE_NAME, "%s.%s", buf, tmpl->name); 830 /* rebuild the private */ 831 cft->private = MEMFILE_PRIVATE(idx, tmpl->private); 832 /* rebuild the file_offset */ 833 if (tmpl->file_offset) { 834 unsigned int offset = tmpl->file_offset; 835 836 cft->file_offset = MEMFILE_OFFSET0(offset) + 837 MEMFILE_FIELD_SIZE(offset) * idx; 838 } 839 840 lockdep_register_key(&cft->lockdep_key); 841 } 842 } 843 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki