[openeuler:openEuler-1.0-LTS 18175/23123] mm/debug.c:174:3: warning: format specifies type 'void *' but the argument has type 'int' - Kernel

30 Jun 2024


      Hi Ding,
FYI, the error/warning still remains.
tree:   https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS
head:   c55d99182a85f38a964fe23a2db2ddf42739a151
commit: 2d2fe6b40444bd8f84f674930ac5f98a6314702e [18175/23123] ascend: mm: add an owner for mm_struct
config: x86_64-randconfig-005-20240420
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build):
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/202406301633.FxUsZ9QE-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from mm/debug.c:14:
   In file included from include/linux/migrate.h:6:
   In file included from include/linux/mempolicy.h:16:
   include/linux/pagemap.h:425:21: warning: cast from 'int (*)(struct file *, struct page *)' to 'filler_t *' (aka 'int (*)(void *, struct page *)') converts to incompatible function type [-Wcast-function-type-strict]
     425 |         filler_t *filler = (filler_t *)mapping->a_ops->readpage;
         |                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
...
...
mm/debug.c:174:3: warning: format specifies type 'void *' but the argument has type 'int' [-Wformat]
135 |                 atomic_read(&mm->tlb_flush_pending),
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/printk.h:342:35: note: expanded from macro 'pr_emerg'
     342 |         printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
         |                                  ~~~     ^~~~~~~~~~~
...
...
mm/debug.c:175:3: warning: format specifies type 'int' but the argument has type 'unsigned long' [-Wformat]
142 |                 mm->def_flags, &mm->def_flags
         |                 ^~~~~~~~~~~~~
   include/linux/printk.h:342:35: note: expanded from macro 'pr_emerg'
     342 |         printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
         |                                  ~~~     ^~~~~~~~~~~
...
...
mm/debug.c:175:18: warning: format specifies type 'unsigned long' but the argument has type 'const unsigned long *' [-Wformat]
143 |                 mm->def_flags, &mm->def_flags
         |                                ^~~~~~~~~~~~~~
   include/linux/printk.h:342:35: note: expanded from macro 'pr_emerg'
     342 |         printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
         |                                  ~~~     ^~~~~~~~~~~
...
...
mm/debug.c:143:21: warning: more '%' conversions than data arguments [-Wformat-insufficient-args]
143 |                 "def_flags: %#lx(%pGv)\n",
         |                                  ~^
   include/linux/printk.h:342:27: note: expanded from macro 'pr_emerg'
     342 |         printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
         |                                  ^~~
   include/linux/printk.h:332:21: note: expanded from macro 'pr_fmt'
     332 | #define pr_fmt(fmt) fmt
         |                     ^~~
   5 warnings generated.
vim +174 mm/debug.c
7cd12b4abfd2f8f Vlastimil Babka 4e462112e98f9ad Vlastimil Babka 82742a3a5152195 Sasha Levin edf14cdbf9a0e5a Vlastimil Babka edf14cdbf9a0e5a Vlastimil Babka 7cd12b4abfd2f8f Vlastimil Babka 7cd12b4abfd2f8f Vlastimil Babka 7cd12b4abfd2f8f Vlastimil Babka 7cd12b4abfd2f8f Vlastimil Babka 7cd12b4abfd2f8f Vlastimil Babka 7cd12b4abfd2f8f Vlastimil Babka 7cd12b4abfd2f8f Vlastimil Babka 7cd12b4abfd2f8f Vlastimil Babka 7cd12b4abfd2f8f Vlastimil Babka 7cd12b4abfd2f8f Vlastimil Babka edf14cdbf9a0e5a Vlastimil Babka edf14cdbf9a0e5a Vlastimil Babka edf14cdbf9a0e5a Vlastimil Babka edf14cdbf9a0e5a Vlastimil Babka edf14cdbf9a0e5a Vlastimil Babka edf14cdbf9a0e5a Vlastimil Babka edf14cdbf9a0e5a Vlastimil Babka edf14cdbf9a0e5a Vlastimil Babka 420adbe9fc1a451 Vlastimil Babka 420adbe9fc1a451 Vlastimil Babka edf14cdbf9a0e5a Vlastimil Babka edf14cdbf9a0e5a Vlastimil Babka edf14cdbf9a0e5a Vlastimil Babka 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin ff8e81163889ac4 Vlastimil Babka 82742a3a5152195 Sasha Levin fc36def997cfd6c Pavel Tatashin fc36def997cfd6c Pavel Tatashin fc36def997cfd6c Pavel Tatashin fc36def997cfd6c Pavel Tatashin fc36def997cfd6c Pavel Tatashin fc36def997cfd6c Pavel Tatashin fc36def997cfd6c Pavel Tatashin fc36def997cfd6c Pavel Tatashin fc36def997cfd6c Pavel Tatashin fc36def997cfd6c Pavel Tatashin fc36def997cfd6c Pavel Tatashin fc36def997cfd6c Pavel Tatashin fc36def997cfd6c Pavel Tatashin 9996f05eac09815 Kirill A. Shutemov 9996f05eac09815 Kirill A. Shutemov 9996f05eac09815 Kirill A. Shutemov 9996f05eac09815 Kirill A. Shutemov 9996f05eac09815 Kirill A. Shutemov fc36def997cfd6c Pavel Tatashin 4d35427ad7641cb Kirill A. Shutemov 152a2d199e1385c Matthew Wilcox 4d35427ad7641cb Kirill A. Shutemov 4d35427ad7641cb Kirill A. Shutemov 53f9263baba69fc Kirill A. Shutemov 53f9263baba69fc Kirill A. Shutemov 53f9263baba69fc Kirill A. Shutemov edf14cdbf9a0e5a Vlastimil Babka ff8e81163889ac4 Vlastimil Babka b8eceeb99014cf5 Vlastimil Babka b8eceeb99014cf5 Vlastimil Babka fc36def997cfd6c Pavel Tatashin 46e8a3a08c23d07 Vlastimil Babka 46e8a3a08c23d07 Vlastimil Babka 46e8a3a08c23d07 Vlastimil Babka 46e8a3a08c23d07 Vlastimil Babka 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin b8eceeb99014cf5 Vlastimil Babka 9edad6ea0f14164 Johannes Weiner fc36def997cfd6c Pavel Tatashin 152a2d199e1385c Matthew Wilcox 9edad6ea0f14164 Johannes Weiner 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin ff8e81163889ac4 Vlastimil Babka 4e462112e98f9ad Vlastimil Babka 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin 152a2d199e1385c Matthew Wilcox 152a2d199e1385c Matthew Wilcox 152a2d199e1385c Matthew Wilcox 152a2d199e1385c Matthew Wilcox b8eceeb99014cf5 Vlastimil Babka 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin b8eceeb99014cf5 Vlastimil Babka b8eceeb99014cf5 Vlastimil Babka 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin 82742a3a5152195 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 7a9cdebdcc17e42 Linus Torvalds 31c9afa6db122a5 Sasha Levin 152a2d199e1385c Matthew Wilcox 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 152a2d199e1385c Matthew Wilcox 31c9afa6db122a5 Sasha Levin 84638335900f199 Konstantin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 152a2d199e1385c Matthew Wilcox 31c9afa6db122a5 Sasha Levin 152a2d199e1385c Matthew Wilcox 31c9afa6db122a5 Sasha Levin 2d2fe6b40444bd8 Ding Tianhong 152a2d199e1385c Matthew Wilcox 31c9afa6db122a5 Sasha Levin 152a2d199e1385c Matthew Wilcox 31c9afa6db122a5 Sasha Levin 152a2d199e1385c Matthew Wilcox 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin b8eceeb99014cf5 Vlastimil Babka 31c9afa6db122a5 Sasha Levin 7a9cdebdcc17e42 Linus Torvalds 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin af5b0f6a09e42c9 Kirill A. Shutemov 31c9afa6db122a5 Sasha Levin 53f4e528406789b Daniel Jordan 53f4e528406789b Daniel Jordan 84638335900f199 Konstantin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 16af97dc5a89753 Nadav Amit b8eceeb99014cf5 Vlastimil Babka 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin 31c9afa6db122a5 Sasha Levin

2016-03-15  @14  #include <linux/migrate.h> 2016-03-15   15  #include <linux/page_owner.h> 2014-10-09   16 2016-03-15   17  #include "internal.h" 2016-03-15   18 2016-03-15   19  char *migrate_reason_names[MR_TYPES] = { 2016-03-15   20  	"compaction", 2016-03-15   21  	"memory_failure", 2016-03-15   22  	"memory_hotplug", 2016-03-15   23  	"syscall_or_cpuset", 2016-03-15   24  	"mempolicy_mbind", 2016-03-15   25  	"numa_misplaced", 2016-03-15   26  	"cma", 2016-03-15   27  }; 2016-03-15   28 2016-03-15   29  const struct trace_print_flags pageflag_names[] = { 2016-03-15   30  	__def_pageflag_names, 2016-03-15   31  	{0, NULL} 2016-03-15   32  }; 2016-03-15   33 2016-03-15   34  const struct trace_print_flags gfpflag_names[] = { 2016-03-15   35  	__def_gfpflag_names, 2016-03-15   36  	{0, NULL} 2016-03-15   37  }; 2016-03-15   38 2016-03-15   39  const struct trace_print_flags vmaflag_names[] = { 2016-03-15   40  	__def_vmaflag_names, 2016-03-15   41  	{0, NULL} 2014-10-09   42  }; 2014-10-09   43 2016-03-15   44  void __dump_page(struct page *page, const char *reason) 2014-10-09   45  { 2018-07-03   46  	bool page_poisoned = PagePoisoned(page); 2018-07-03   47  	int mapcount; 2018-07-03   48 2018-07-03   49  	/* 2018-07-03   50  	 * If struct page is poisoned don't access Page*() functions as that 2018-07-03   51  	 * leads to recursive loop. Page*() check for poisoned pages, and calls 2018-07-03   52  	 * dump_page() when detected. 2018-07-03   53  	 */ 2018-07-03   54  	if (page_poisoned) { 2018-07-03   55  		pr_emerg("page:%px is uninitialized and poisoned", page); 2018-07-03   56  		goto hex_only; 2018-07-03   57  	} 2018-07-03   58 2016-10-07   59  	/* 2016-10-07   60  	 * Avoid VM_BUG_ON() in page_mapcount(). 2016-10-07   61  	 * page->_mapcount space in struct page is used by sl[aou]b pages to 2016-10-07   62  	 * encode own info. 2016-10-07   63  	 */ 2018-07-03   64  	mapcount = PageSlab(page) ? 0 : page_mapcount(page); 2016-09-19   65 2018-01-04   66  	pr_emerg("page:%px count:%d mapcount:%d mapping:%px index:%#lx", 2016-09-19   67  		  page, page_ref_count(page), mapcount, 2016-09-19   68  		  page->mapping, page_to_pgoff(page)); 2016-01-15   69  	if (PageCompound(page)) 2016-01-15   70  		pr_cont(" compound_mapcount: %d", compound_mapcount(page)); 2016-01-15   71  	pr_cont("\n"); 2016-03-15   72  	BUILD_BUG_ON(ARRAY_SIZE(pageflag_names) != __NR_PAGEFLAGS + 1); 2016-03-15   73 2016-03-15   74  	pr_emerg("flags: %#lx(%pGp)\n", page->flags, &page->flags); 2016-03-15   75 2018-07-03   76  hex_only: 2016-12-12   77  	print_hex_dump(KERN_ALERT, "raw: ", DUMP_PREFIX_NONE, 32, 2016-12-12   78  			sizeof(unsigned long), page, 2016-12-12   79  			sizeof(struct page), false); 2016-12-12   80 2014-10-09   81  	if (reason) 2014-10-09   82  		pr_alert("page dumped because: %s\n", reason); 2016-03-15   83 2014-12-10   84  #ifdef CONFIG_MEMCG 2018-07-03   85  	if (!page_poisoned && page->mem_cgroup) 2018-01-04   86  		pr_alert("page->mem_cgroup:%px\n", page->mem_cgroup); 2014-12-10   87  #endif 2014-10-09   88  } 2014-10-09   89 2014-10-09   90  void dump_page(struct page *page, const char *reason) 2014-10-09   91  { 2016-03-15   92  	__dump_page(page, reason); 2016-03-15   93  	dump_page_owner(page); 2014-10-09   94  } 2014-10-09   95  EXPORT_SYMBOL(dump_page); 2014-10-09   96 2014-10-09   97  #ifdef CONFIG_DEBUG_VM 2014-10-09   98 2014-10-09   99  void dump_vma(const struct vm_area_struct *vma) 2014-10-09  100  { 2018-01-04  101  	pr_emerg("vma %px start %px end %px\n" 2018-01-04  102  		"next %px prev %px mm %px\n" 2018-01-04  103  		"prot %lx anon_vma %px vm_ops %px\n" 2018-01-04  104  		"pgoff %lx file %px private_data %px\n" 2016-03-15  105  		"flags: %#lx(%pGv)\n", 2014-10-09  106  		vma, (void *)vma->vm_start, (void *)vma->vm_end, vma->vm_next, 2014-10-09  107  		vma->vm_prev, vma->vm_mm, 2014-10-09  108  		(unsigned long)pgprot_val(vma->vm_page_prot), 2014-10-09  109  		vma->anon_vma, vma->vm_ops, vma->vm_pgoff, 2016-03-15  110  		vma->vm_file, vma->vm_private_data, 2016-03-15  111  		vma->vm_flags, &vma->vm_flags); 2014-10-09  112  } 2014-10-09  113  EXPORT_SYMBOL(dump_vma); 2014-10-09  114 2014-10-09  115  void dump_mm(const struct mm_struct *mm) 2014-10-09  116  { 2018-09-12  117  	pr_emerg("mm %px mmap %px seqnum %llu task_size %lu\n" 2014-10-09  118  #ifdef CONFIG_MMU 2018-01-04  119  		"get_unmapped_area %px\n" 2014-10-09  120  #endif 2014-10-09  121  		"mmap_base %lu mmap_legacy_base %lu highest_vm_end %lu\n" 2018-01-04  122  		"pgd %px mm_users %d mm_count %d pgtables_bytes %lu map_count %d\n" 2014-10-09  123  		"hiwater_rss %lx hiwater_vm %lx total_vm %lx locked_vm %lx\n" Khlebnikov 2016-01-14  124  		"pinned_vm %lx data_vm %lx exec_vm %lx stack_vm %lx\n" 2014-10-09  125  		"start_code %lx end_code %lx start_data %lx end_data %lx\n" 2014-10-09  126  		"start_brk %lx brk %lx start_stack %lx\n" 2014-10-09  127  		"arg_start %lx arg_end %lx env_start %lx env_end %lx\n" 2018-01-04  128  		"binfmt %px flags %lx core_state %px\n" 2014-10-09  129  #ifdef CONFIG_AIO 2018-01-04  130  		"ioctx_table %px\n" 2014-10-09  131  #endif 2021-10-30  132  #ifdef CONFIG_MM_OWNER 2018-01-04  133  		"owner %px " 2014-10-09  134  #endif 2018-01-04  135  		"exe_file %px\n" 2014-10-09  136  #ifdef CONFIG_MMU_NOTIFIER 2018-01-04  137  		"mmu_notifier_mm %px\n" 2014-10-09  138  #endif 2014-10-09  139  #ifdef CONFIG_NUMA_BALANCING 2014-10-09  140  		"numa_next_scan %lu numa_scan_offset %lu numa_scan_seq %d\n" 2014-10-09  141  #endif 2014-10-09  142  		"tlb_flush_pending %d\n" 2016-03-15 @143  		"def_flags: %#lx(%pGv)\n", 2014-10-09  144 2018-09-12  145  		mm, mm->mmap, (long long) mm->vmacache_seqnum, mm->task_size, 2014-10-09  146  #ifdef CONFIG_MMU 2014-10-09  147  		mm->get_unmapped_area, 2014-10-09  148  #endif 2014-10-09  149  		mm->mmap_base, mm->mmap_legacy_base, mm->highest_vm_end, 2014-10-09  150  		mm->pgd, atomic_read(&mm->mm_users), 2014-10-09  151  		atomic_read(&mm->mm_count), 2017-11-15  152  		mm_pgtables_bytes(mm), 2014-10-09  153  		mm->map_count, 2019-08-14  154  		mm->hiwater_rss, mm->hiwater_vm, mm->total_vm, 2019-08-14  155  		atomic_long_read(&mm->locked_vm), Khlebnikov 2016-01-14  156  		mm->pinned_vm, mm->data_vm, mm->exec_vm, mm->stack_vm, 2014-10-09  157  		mm->start_code, mm->end_code, mm->start_data, mm->end_data, 2014-10-09  158  		mm->start_brk, mm->brk, mm->start_stack, 2014-10-09  159  		mm->arg_start, mm->arg_end, mm->env_start, mm->env_end, 2014-10-09  160  		mm->binfmt, mm->flags, mm->core_state, 2014-10-09  161  #ifdef CONFIG_AIO 2014-10-09  162  		mm->ioctx_table, 2014-10-09  163  #endif 2014-10-09  164  #ifdef CONFIG_MEMCG 2014-10-09  165  		mm->owner, 2014-10-09  166  #endif 2014-10-09  167  		mm->exe_file, 2014-10-09  168  #ifdef CONFIG_MMU_NOTIFIER 2014-10-09  169  		mm->mmu_notifier_mm, 2014-10-09  170  #endif 2014-10-09  171  #ifdef CONFIG_NUMA_BALANCING 2014-10-09  172  		mm->numa_next_scan, mm->numa_scan_offset, mm->numa_scan_seq, 2014-10-09  173  #endif 2017-08-10 @174  		atomic_read(&mm->tlb_flush_pending), 2016-03-15 @175  		mm->def_flags, &mm->def_flags 2014-10-09  176  	); 2014-10-09  177  } 2014-10-09  178
:::::: The code at line 174 was first introduced by commit
:::::: 16af97dc5a8975371a83d9e30a64038b48f40a2d mm: migrate: prevent racy access to tlb_flush_pending
:::::: TO: Nadav Amit nadav.amit@gmail.com
:::::: CC: Linus Torvalds torvalds@linux-foundation.org
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