* [davidhildenbrand:rmap_id 2/4] kernel/fork.c:939:2: error: implicit declaration of function 'mm_free_rmap_id' is invalid in C99
@ 2023-09-08 2:23 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-09-08 2:23 UTC (permalink / raw)
To: David Hildenbrand; +Cc: llvm, oe-kbuild-all
tree: https://github.com/davidhildenbrand/linux rmap_id
head: 17125381adce3cd008977d62b31863b283bf75bb
commit: 1730d1c9fe15d22df5daa27747c938e2093f1541 [2/4] rmap_id per MM
config: um-allyesconfig (https://download.01.org/0day-ci/archive/20230908/202309081027.tRNUzl73-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230908/202309081027.tRNUzl73-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/202309081027.tRNUzl73-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from kernel/fork.c:34:
In file included from include/linux/mempolicy.h:15:
In file included from include/linux/pagemap.h:11:
In file included from include/linux/highmem.h:12:
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:13:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
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'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
In file included from kernel/fork.c:34:
In file included from include/linux/mempolicy.h:15:
In file included from include/linux/pagemap.h:11:
In file included from include/linux/highmem.h:12:
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:13:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
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'
#define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
^
In file included from kernel/fork.c:34:
In file included from include/linux/mempolicy.h:15:
In file included from include/linux/pagemap.h:11:
In file included from include/linux/highmem.h:12:
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:13:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
kernel/fork.c:833:9: warning: 'mm_alloc_rmap_id' macro redefined [-Wmacro-redefined]
#define mm_alloc_rmap_id(mm)
^
kernel/fork.c:832:9: note: previous definition is here
#define mm_alloc_rmap_id(mm) (0)
^
>> kernel/fork.c:939:2: error: implicit declaration of function 'mm_free_rmap_id' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
mm_free_rmap_id(mm);
^
kernel/fork.c:939:2: note: did you mean 'mm_free_pgd'?
kernel/fork.c:801:20: note: 'mm_free_pgd' declared here
static inline void mm_free_pgd(struct mm_struct *mm)
^
kernel/fork.c:1321:26: error: expected expression
if (mm_alloc_rmap_id(mm))
^
kernel/fork.c:1322:22: error: expected ';' after goto statement
goto fail_no_rmapid
^
;
kernel/fork.c:1343:2: error: implicit declaration of function 'mm_free_rmap_id' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
mm_free_rmap_id(mm);
^
kernel/fork.c:1322:8: error: use of undeclared label 'fail_no_rmapid'
goto fail_no_rmapid
^
13 warnings and 5 errors generated.
vim +/mm_free_rmap_id +939 kernel/fork.c
923
924 /*
925 * Called when the last reference to the mm
926 * is dropped: either by a lazy thread or by
927 * mmput. Free the page directory and the mm.
928 */
929 void __mmdrop(struct mm_struct *mm)
930 {
931 BUG_ON(mm == &init_mm);
932 WARN_ON_ONCE(mm == current->mm);
933
934 /* Ensure no CPUs are using this as their lazy tlb mm */
935 cleanup_lazy_tlbs(mm);
936
937 WARN_ON_ONCE(mm == current->active_mm);
938 mm_free_pgd(mm);
> 939 mm_free_rmap_id(mm);
940 destroy_context(mm);
941 mmu_notifier_subscriptions_destroy(mm);
942 check_mm(mm);
943 put_user_ns(mm->user_ns);
944 mm_pasid_drop(mm);
945 mm_destroy_cid(mm);
946 percpu_counter_destroy_many(mm->rss_stat, NR_MM_COUNTERS);
947
948 free_mm(mm);
949 }
950 EXPORT_SYMBOL_GPL(__mmdrop);
951
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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