tree: git://git.cmpxchg.org/linux-mmotm.git master
head: 1b1ce5151f3dd9a5bc989207ac56e96dcb84bef4
commit: e76ec930bbe0906735fa147736ab051a8e256b1b [48/283] kasan: initialize shadow to 0xff for tag-based mode
config: x86_64-randconfig-x013-12041647 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
git checkout e76ec930bbe0906735fa147736ab051a8e256b1b
# save the attached .config to linux build tree
make ARCH=x86_64
All errors (new ones prefixed by >>):
mm/kasan/common.c: In function 'kasan_module_alloc':
>> mm/kasan/common.c:481:17: error: 'KASAN_SHADOW_INIT' undeclared (first use in this function); did you mean 'KASAN_SHADOW_END'?
__memset(ret, KASAN_SHADOW_INIT, shadow_size);
^~~~~~~~~~~~~~~~~
KASAN_SHADOW_END
mm/kasan/common.c:481:17: note: each undeclared identifier is reported only once for each function it appears in
vim +481 mm/kasan/common.c
459
460 int kasan_module_alloc(void *addr, size_t size)
461 {
462 void *ret;
463 size_t scaled_size;
464 size_t shadow_size;
465 unsigned long shadow_start;
466
467 shadow_start = (unsigned long)kasan_mem_to_shadow(addr);
468 scaled_size = (size + KASAN_SHADOW_MASK) >> KASAN_SHADOW_SCALE_SHIFT;
469 shadow_size = round_up(scaled_size, PAGE_SIZE);
470
471 if (WARN_ON(!PAGE_ALIGNED(shadow_start)))
472 return -EINVAL;
473
474 ret = __vmalloc_node_range(shadow_size, 1, shadow_start,
475 shadow_start + shadow_size,
476 GFP_KERNEL,
477 PAGE_KERNEL, VM_NO_GUARD, NUMA_NO_NODE,
478 __builtin_return_address(0));
479
480 if (ret) {
> 481 __memset(ret, KASAN_SHADOW_INIT, shadow_size);
482 find_vm_area(addr)->flags |= VM_KASAN;
483 kmemleak_ignore(ret);
484 return 0;
485 }
486
487 return -ENOMEM;
488 }
489
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0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
Attachment:
.config.gz
Description: application/gzip
