CC: [email protected] CC: [email protected] TO: Zhenguo Yao <[email protected]> CC: Johannes Weiner <[email protected]> CC: Andrew Morton <[email protected]> CC: Linux Memory Management List <[email protected]>
tree: https://github.com/hnaz/linux-mm master head: 2da980116934414a1c45f4c88e1c56e4cd01b86e commit: 83a94fca79254b50ab85743e3e20773de9ec26f7 [117/223] hugetlbfs: extend the definition of hugepages parameter to support node allocation :::::: branch date: 19 hours ago :::::: commit date: 19 hours ago config: i386-randconfig-m021-20211001 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> smatch warnings: mm/hugetlb.c:2957 __alloc_bootmem_huge_page() warn: ignoring unreachable code. mm/hugetlb.c:4130 hugepages_setup() warn: potential spectre issue 'default_hugepages_in_node' [w] (local cap) mm/hugetlb.c:4132 hugepages_setup() warn: potential spectre issue 'parsed_hstate->max_huge_pages_node' [w] (local cap) vim +2957 mm/hugetlb.c b45b5bd65f668a David Gibson 2006-03-22 2937 83a94fca79254b Zhenguo Yao 2021-09-30 2938 int alloc_bootmem_huge_page(struct hstate *h, int nid) e24a1307ba1f99 Aneesh Kumar K.V 2017-07-28 2939 __attribute__ ((weak, alias("__alloc_bootmem_huge_page"))); 83a94fca79254b Zhenguo Yao 2021-09-30 2940 int __alloc_bootmem_huge_page(struct hstate *h, int nid) aa888a74977a8f Andi Kleen 2008-07-23 2941 { aa888a74977a8f Andi Kleen 2008-07-23 2942 struct huge_bootmem_page *m; b2261026825ed3 Joonsoo Kim 2013-09-11 2943 int nr_nodes, node; aa888a74977a8f Andi Kleen 2008-07-23 2944 83a94fca79254b Zhenguo Yao 2021-09-30 2945 if (nid >= nr_online_nodes) 83a94fca79254b Zhenguo Yao 2021-09-30 2946 return 0; 83a94fca79254b Zhenguo Yao 2021-09-30 2947 /* do node specific alloc */ 83a94fca79254b Zhenguo Yao 2021-09-30 2948 if (nid != NUMA_NO_NODE) { 83a94fca79254b Zhenguo Yao 2021-09-30 2949 m = memblock_alloc_try_nid_raw(huge_page_size(h), huge_page_size(h), 83a94fca79254b Zhenguo Yao 2021-09-30 2950 0, MEMBLOCK_ALLOC_ACCESSIBLE, nid); 83a94fca79254b Zhenguo Yao 2021-09-30 2951 if (m) 83a94fca79254b Zhenguo Yao 2021-09-30 2952 goto found; 83a94fca79254b Zhenguo Yao 2021-09-30 2953 else 83a94fca79254b Zhenguo Yao 2021-09-30 2954 return 0; 83a94fca79254b Zhenguo Yao 2021-09-30 2955 } 83a94fca79254b Zhenguo Yao 2021-09-30 2956 /* do all node balanced alloc */ b2261026825ed3 Joonsoo Kim 2013-09-11 @2957 for_each_node_mask_to_alloc(h, nr_nodes, node, &node_states[N_MEMORY]) { 83a94fca79254b Zhenguo Yao 2021-09-30 2958 m = memblock_alloc_try_nid_raw( 8b89a116943754 Grygorii Strashko 2014-01-21 2959 huge_page_size(h), huge_page_size(h), 97ad1087efffed Mike Rapoport 2018-10-30 2960 0, MEMBLOCK_ALLOC_ACCESSIBLE, node); aa888a74977a8f Andi Kleen 2008-07-23 2961 /* aa888a74977a8f Andi Kleen 2008-07-23 2962 * Use the beginning of the huge page to store the aa888a74977a8f Andi Kleen 2008-07-23 2963 * huge_bootmem_page struct (until gather_bootmem aa888a74977a8f Andi Kleen 2008-07-23 2964 * puts them into the mem_map). aa888a74977a8f Andi Kleen 2008-07-23 2965 */ 83a94fca79254b Zhenguo Yao 2021-09-30 2966 if (m) aa888a74977a8f Andi Kleen 2008-07-23 2967 goto found; 83a94fca79254b Zhenguo Yao 2021-09-30 2968 else aa888a74977a8f Andi Kleen 2008-07-23 2969 return 0; 83a94fca79254b Zhenguo Yao 2021-09-30 2970 } aa888a74977a8f Andi Kleen 2008-07-23 2971 aa888a74977a8f Andi Kleen 2008-07-23 2972 found: aa888a74977a8f Andi Kleen 2008-07-23 2973 /* Put them into a private list first because mem_map is not up yet */ 330d6e489a0ab4 Cannon Matthews 2018-08-17 2974 INIT_LIST_HEAD(&m->list); aa888a74977a8f Andi Kleen 2008-07-23 2975 list_add(&m->list, &huge_boot_pages); aa888a74977a8f Andi Kleen 2008-07-23 2976 m->hstate = h; aa888a74977a8f Andi Kleen 2008-07-23 2977 return 1; aa888a74977a8f Andi Kleen 2008-07-23 2978 } aa888a74977a8f Andi Kleen 2008-07-23 2979 :::::: The code at line 2957 was first introduced by commit :::::: b2261026825ed34066b24069359d118098bb1876 mm, hugetlb: fix and clean-up node iteration code to alloc or free :::::: TO: Joonsoo Kim <[email protected]> :::::: CC: Linus Torvalds <[email protected]> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
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