[rcu:dev.2020.12.08a 96/97] mm/slab_common.c:583: undefined reference to `kmem_struct_debug_provenance'

From: kernel test robot
Date: Tue Dec 08 2020 - 18:47:42 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2020.12.08a
head: c5c1f436c5434ca260106aa0713ec8e4de3cba22
commit: f1bf0344f92961c0691b3baeaa1c2f23bb076bc8 [96/97] mm: Add kmalloc_debug_print_provenance() to print source of memory block
config: i386-randconfig-s002-20201208 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-179-ga00755aa-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id=f1bf0344f92961c0691b3baeaa1c2f23bb076bc8
git remote add rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
git fetch --no-tags rcu dev.2020.12.08a
git checkout f1bf0344f92961c0691b3baeaa1c2f23bb076bc8
# save the attached .config to linux build tree
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

ld: mm/slab_common.o: in function `kmalloc_debug_print_provenance':
>> mm/slab_common.c:583: undefined reference to `kmem_struct_debug_provenance'

vim +583 mm/slab_common.c

557
558 /**
559 * kmalloc_debug_print_provenance - Print available provenance information
560 * @object: object for which to find provenance information.
561 *
562 * This function uses pr_cont(), so that the caller is expected to have
563 * printed out whatever preamble is appropriate. The provenance information
564 * depends on the type of object and on how much debugging is enabled.
565 * For a slab-cache object, the slab name is printed, and, if available,
566 * the return address and stack trace from the allocation of that object.
567 */
568 void kmalloc_debug_print_provenance(void *object)
569 {
570 int i;
571 struct page *page;
572 struct kmem_provenance kp;
573
574 if (!virt_addr_valid(object)) {
575 pr_cont(" non-paged (local) memory.\n");
576 return;
577 }
578 page = virt_to_head_page(object);
579 kp.kp_ptr = object;
580 kp.kp_page = page;
581 kp.kp_nstack = KS_ADDRS_COUNT;
582 if (PageSlab(page)) {
> 583 kmem_struct_debug_provenance(&kp);
584 if (page->slab_cache)
585 pr_cont(" slab %s", page->slab_cache->name);
586 if (kp.kp_ret)
587 pr_cont(" allocated at %pS\n", kp.kp_ret);
588 if (kp.kp_stack[0]) {
589 for (i = 0; i < ARRAY_SIZE(kp.kp_stack); i++) {
590 if (!kp.kp_stack[i])
591 break;
592 pr_info(" %pS\n", kp.kp_stack[i]);
593 }
594 }
595 return;
596 }
597 pr_cont(" non-slab memory.\n");
598 }
599 EXPORT_SYMBOL_GPL(kmalloc_debug_print_provenance);
600

---
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Attachment: .config.gz
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