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Message-ID: <202501041603.0c8v8Wbr-lkp@intel.com>
Date: Sat, 4 Jan 2025 16:38:55 +0800
From: kernel test robot <lkp@...el.com>
To: Guo Weikang <guoweikang.kernel@...il.com>,
Mike Rapoport <rppt@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: oe-kbuild-all@...ts.linux.dev,
Linux Memory Management List <linux-mm@...ck.org>,
linux-kernel@...r.kernel.org,
Guo Weikang <guoweikang.kernel@...il.com>
Subject: Re: [PATCH 3/3] mm/memblock: Modify the default failure behavior of
memblock_alloc_low(from)
Hi Guo,
kernel test robot noticed the following build warnings:
[auto build test WARNING on akpm-mm/mm-everything]
url: https://github.com/intel-lab-lkp/linux/commits/Guo-Weikang/mm-memblock-Modify-the-default-failure-behavior-of-memblock_alloc_raw-to-panic/20250103-185401
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20250103105158.1350689-3-guoweikang.kernel%40gmail.com
patch subject: [PATCH 3/3] mm/memblock: Modify the default failure behavior of memblock_alloc_low(from)
config: sparc-randconfig-001-20250104 (https://download.01.org/0day-ci/archive/20250104/202501041603.0c8v8Wbr-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250104/202501041603.0c8v8Wbr-lkp@intel.com/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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202501041603.0c8v8Wbr-lkp@intel.com/
All warnings (new ones prefixed by >>):
arch/sparc/mm/init_64.c: In function 'arch_hugetlb_valid_size':
arch/sparc/mm/init_64.c:361:24: warning: variable 'hv_pgsz_idx' set but not used [-Wunused-but-set-variable]
361 | unsigned short hv_pgsz_idx;
| ^~~~~~~~~~~
arch/sparc/mm/init_64.c: In function 'kernel_map_range':
>> arch/sparc/mm/init_64.c:1788:32: warning: variable 'new' set but not used [-Wunused-but-set-variable]
1788 | pud_t *new;
| ^~~
arch/sparc/mm/init_64.c: In function 'sun4v_linear_pte_xor_finalize':
arch/sparc/mm/init_64.c:2200:23: warning: variable 'pagecv_flag' set but not used [-Wunused-but-set-variable]
2200 | unsigned long pagecv_flag;
| ^~~~~~~~~~~
vim +/new +1788 arch/sparc/mm/init_64.c
0dd5b7b09e13da arch/sparc/mm/init_64.c David S. Miller 2014-09-24 1764
896aef430e5afb arch/sparc64/mm/init.c Sam Ravnborg 2008-02-24 1765 static unsigned long __ref kernel_map_range(unsigned long pstart,
0dd5b7b09e13da arch/sparc/mm/init_64.c David S. Miller 2014-09-24 1766 unsigned long pend, pgprot_t prot,
0dd5b7b09e13da arch/sparc/mm/init_64.c David S. Miller 2014-09-24 1767 bool use_huge)
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1768 {
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1769 unsigned long vstart = PAGE_OFFSET + pstart;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1770 unsigned long vend = PAGE_OFFSET + pend;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1771 unsigned long alloc_bytes = 0UL;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1772
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1773 if ((vstart & ~PAGE_MASK) || (vend & ~PAGE_MASK)) {
13edad7a5cef1c arch/sparc64/mm/init.c David S. Miller 2005-09-29 1774 prom_printf("kernel_map: Unaligned physmem[%lx:%lx]\n",
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1775 vstart, vend);
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1776 prom_halt();
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1777 }
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1778
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1779 while (vstart < vend) {
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1780 unsigned long this_end, paddr = __pa(vstart);
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1781 pgd_t *pgd = pgd_offset_k(vstart);
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1782 p4d_t *p4d;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1783 pud_t *pud;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1784 pmd_t *pmd;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1785 pte_t *pte;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1786
ac55c768143aa3 arch/sparc/mm/init_64.c David S. Miller 2014-09-26 1787 if (pgd_none(*pgd)) {
ac55c768143aa3 arch/sparc/mm/init_64.c David S. Miller 2014-09-26 @1788 pud_t *new;
ac55c768143aa3 arch/sparc/mm/init_64.c David S. Miller 2014-09-26 1789
4fc4a09e4cc112 arch/sparc/mm/init_64.c Mike Rapoport 2018-10-30 1790 new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE,
4fc4a09e4cc112 arch/sparc/mm/init_64.c Mike Rapoport 2018-10-30 1791 PAGE_SIZE);
ac55c768143aa3 arch/sparc/mm/init_64.c David S. Miller 2014-09-26 1792 alloc_bytes += PAGE_SIZE;
ac55c768143aa3 arch/sparc/mm/init_64.c David S. Miller 2014-09-26 1793 pgd_populate(&init_mm, pgd, new);
ac55c768143aa3 arch/sparc/mm/init_64.c David S. Miller 2014-09-26 1794 }
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1795
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1796 p4d = p4d_offset(pgd, vstart);
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1797 if (p4d_none(*p4d)) {
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1798 pud_t *new;
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1799
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1800 new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE,
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1801 PAGE_SIZE);
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1802 alloc_bytes += PAGE_SIZE;
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1803 p4d_populate(&init_mm, p4d, new);
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1804 }
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1805
5637bc50483404 arch/sparc/mm/init_64.c Mike Rapoport 2019-11-24 1806 pud = pud_offset(p4d, vstart);
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1807 if (pud_none(*pud)) {
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1808 pmd_t *new;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1809
0dd5b7b09e13da arch/sparc/mm/init_64.c David S. Miller 2014-09-24 1810 if (kernel_can_map_hugepud(vstart, vend, use_huge)) {
0dd5b7b09e13da arch/sparc/mm/init_64.c David S. Miller 2014-09-24 1811 vstart = kernel_map_hugepud(vstart, vend, pud);
0dd5b7b09e13da arch/sparc/mm/init_64.c David S. Miller 2014-09-24 1812 continue;
0dd5b7b09e13da arch/sparc/mm/init_64.c David S. Miller 2014-09-24 1813 }
4fc4a09e4cc112 arch/sparc/mm/init_64.c Mike Rapoport 2018-10-30 1814 new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE,
4fc4a09e4cc112 arch/sparc/mm/init_64.c Mike Rapoport 2018-10-30 1815 PAGE_SIZE);
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1816 alloc_bytes += PAGE_SIZE;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1817 pud_populate(&init_mm, pud, new);
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1818 }
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1819
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1820 pmd = pmd_offset(pud, vstart);
0dd5b7b09e13da arch/sparc/mm/init_64.c David S. Miller 2014-09-24 1821 if (pmd_none(*pmd)) {
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1822 pte_t *new;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1823
0dd5b7b09e13da arch/sparc/mm/init_64.c David S. Miller 2014-09-24 1824 if (kernel_can_map_hugepmd(vstart, vend, use_huge)) {
0dd5b7b09e13da arch/sparc/mm/init_64.c David S. Miller 2014-09-24 1825 vstart = kernel_map_hugepmd(vstart, vend, pmd);
0dd5b7b09e13da arch/sparc/mm/init_64.c David S. Miller 2014-09-24 1826 continue;
0dd5b7b09e13da arch/sparc/mm/init_64.c David S. Miller 2014-09-24 1827 }
4fc4a09e4cc112 arch/sparc/mm/init_64.c Mike Rapoport 2018-10-30 1828 new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE,
4fc4a09e4cc112 arch/sparc/mm/init_64.c Mike Rapoport 2018-10-30 1829 PAGE_SIZE);
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1830 alloc_bytes += PAGE_SIZE;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1831 pmd_populate_kernel(&init_mm, pmd, new);
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1832 }
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1833
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1834 pte = pte_offset_kernel(pmd, vstart);
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1835 this_end = (vstart + PMD_SIZE) & PMD_MASK;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1836 if (this_end > vend)
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1837 this_end = vend;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1838
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1839 while (vstart < this_end) {
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1840 pte_val(*pte) = (paddr | pgprot_val(prot));
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1841
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1842 vstart += PAGE_SIZE;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1843 paddr += PAGE_SIZE;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1844 pte++;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1845 }
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1846 }
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1847
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1848 return alloc_bytes;
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1849 }
56425306517ef2 arch/sparc64/mm/init.c David S. Miller 2005-09-25 1850
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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