From: kernel test robot <lkp@intel.com>
To: "Alex Shi (Tencent)" <alexs@kernel.org>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev
Subject: [alexshi:mmunstable 36/38] mm/memory.c:440:3: error: 'struct ptdesc *' and 'typeof (mem_map)' (aka 'struct page *') are not pointers to compatible types
Date: Sat, 20 Jul 2024 13:47:50 +0800 [thread overview]
Message-ID: <202407201315.bbYlzWBh-lkp@intel.com> (raw)
tree: https://github.com/alexshi/linux.git mmunstable
head: b17c1bbf65811ff797f57b7ddc4fdf4b86d86030
commit: 46417a6009d8064f174e7987dae8288f5cd9c4eb [36/38] pass ptdesc to pmd_populate
config: um-allnoconfig (https://download.01.org/0day-ci/archive/20240720/202407201315.bbYlzWBh-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240720/202407201315.bbYlzWBh-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407201315.bbYlzWBh-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from mm/memory.c:43:
In file included from include/linux/kernel_stat.h:9:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from arch/um/include/asm/hardirq.h:5:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from mm/memory.c:43:
In file included from include/linux/kernel_stat.h:9:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from arch/um/include/asm/hardirq.h:5:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from mm/memory.c:43:
In file included from include/linux/kernel_stat.h:9:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from arch/um/include/asm/hardirq.h:5:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
693 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
701 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
709 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
718 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
727 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
736 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> mm/memory.c:440:3: error: 'struct ptdesc *' and 'typeof (mem_map)' (aka 'struct page *') are not pointers to compatible types
440 | pmd_populate(mm, pmd, page_ptdesc(*pte));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/um/include/asm/pgalloc.h:20:24: note: expanded from macro 'pmd_populate'
19 | set_pmd(pmd, __pmd(_PAGE_TABLE + \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
20 | ((unsigned long long)page_to_pfn(pte) << \
| ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
21 | (unsigned long long) PAGE_SHIFT)))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:64:21: note: expanded from macro 'page_to_pfn'
64 | #define page_to_pfn __page_to_pfn
| ^
include/asm-generic/memory_model.h:19:53: note: expanded from macro '__page_to_pfn'
19 | #define __page_to_pfn(page) ((unsigned long)((page) - mem_map) + \
| ^ ~~~~~~~
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/asm-generic/pgtable-nop4d.h:41:38: note: expanded from macro '__p4d'
41 | #define __p4d(x) ((p4d_t) { __pgd(x) })
| ^
arch/um/include/asm/page.h:88:30: note: expanded from macro '__pgd'
88 | #define __pgd(x) ((pgd_t) { (x) } )
| ^
arch/um/include/asm/pgtable-2level.h:37:47: note: expanded from macro 'set_pmd'
37 | #define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
| ^~~~~~
12 warnings and 1 error generated.
vim +440 mm/memory.c
419
420 void pmd_install(struct mm_struct *mm, pmd_t *pmd, pgtable_t *pte)
421 {
422 spinlock_t *ptl = pmd_lock(mm, pmd);
423
424 if (likely(pmd_none(*pmd))) { /* Has another populated it ? */
425 mm_inc_nr_ptes(mm);
426 /*
427 * Ensure all pte setup (eg. pte page lock and page clearing) are
428 * visible before the pte is made visible to other CPUs by being
429 * put into page tables.
430 *
431 * The other side of the story is the pointer chasing in the page
432 * table walking code (when walking the page table without locking;
433 * ie. most of the time). Fortunately, these data accesses consist
434 * of a chain of data-dependent loads, meaning most CPUs (alpha
435 * being the notable exception) will already guarantee loads are
436 * seen in-order. See the alpha page table accessors for the
437 * smp_rmb() barriers in page table walking code.
438 */
439 smp_wmb(); /* Could be smp_wmb__xxx(before|after)_spin_lock */
> 440 pmd_populate(mm, pmd, page_ptdesc(*pte));
441 *pte = NULL;
442 }
443 spin_unlock(ptl);
444 }
445
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2024-07-20 5:48 UTC|newest]
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