From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com, Dan Carpenter <error27@gmail.com>
Subject: [android-common:android17-6.18 15/15] mm/page_owner.c:558 print_page_owner() error: '%pGp' expects argument of type 'unsigned long *', argument 8 has type 'struct memdesc_flags_t*'
Date: Wed, 07 Oct 2026 06:37:25 +0200 [thread overview]
Message-ID: <202610070651.K1PgdJAF-lkp@intel.com> (raw)
Unfiltered warning: this smatch report is sent as-is and has not been
reviewed for false positives, so please treat it with due skepticism.
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: cros-kernel-buildreports@googlegroups.com
tree: https://android.googlesource.com/kernel/common android17-6.18
head: efe665b77332621017fded6de1496bfff20ae5c6
commit: 53fbef56e07df822ea3029109ffca25328c2e5ac [15/15] mm: introduce memdesc_flags_t
:::::: branch date: 6 hours ago
:::::: commit date: 1 year, 1 month ago
config: i386-randconfig-2200-20261006 (https://download.01.org/0day-ci/archive/20261007/202610070651.K1PgdJAF-lkp@intel.com/config)
compiler: gcc-13 (Debian 13.3.0-16) 13.3.0
smatch: v0.5.0-9187-g5189e3fb
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
| Fixes: 53fbef56e07d ("mm: introduce memdesc_flags_t")
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202610070651.K1PgdJAF-lkp@intel.com/
smatch warnings:
mm/page_owner.c:558 print_page_owner() error: '%pGp' expects argument of type 'unsigned long *', argument 8 has type 'struct memdesc_flags_t*'
vim +558 mm/page_owner.c
fcf8935832b86d Waiman Long 2022-03-24 534
48c96a3685795e Joonsoo Kim 2014-12-12 535 static ssize_t
48c96a3685795e Joonsoo Kim 2014-12-12 536 print_page_owner(char __user *buf, size_t count, unsigned long pfn,
9300d8dfd282bd Joonsoo Kim 2016-10-07 537 struct page *page, struct page_owner *page_owner,
f2ca0b55710752 Joonsoo Kim 2016-07-26 538 depot_stack_handle_t handle)
48c96a3685795e Joonsoo Kim 2014-12-12 539 {
af52bf6b92f7d8 Thomas Gleixner 2019-04-25 540 int ret, pageblock_mt, page_mt;
48c96a3685795e Joonsoo Kim 2014-12-12 541 char *kbuf;
48c96a3685795e Joonsoo Kim 2014-12-12 542
c8f61cfc871fad Miles Chen 2018-12-28 543 count = min_t(size_t, count, PAGE_SIZE);
48c96a3685795e Joonsoo Kim 2014-12-12 544 kbuf = kmalloc(count, GFP_KERNEL);
48c96a3685795e Joonsoo Kim 2014-12-12 545 if (!kbuf)
48c96a3685795e Joonsoo Kim 2014-12-12 546 return -ENOMEM;
48c96a3685795e Joonsoo Kim 2014-12-12 547
3ebc4397612732 Waiman Long 2022-03-24 548 ret = scnprintf(kbuf, count,
b459f0905eec31 Audra Mitchell 2023-10-13 549 "Page allocated via order %u, mask %#x(%pGg), pid %d, tgid %d (%s), ts %llu ns\n",
9300d8dfd282bd Joonsoo Kim 2016-10-07 550 page_owner->order, page_owner->gfp_mask,
9cc7e96aa846f9 Liam Mark 2020-12-14 551 &page_owner->gfp_mask, page_owner->pid,
bf215eab785a30 Yixuan Cao 2022-03-24 552 page_owner->tgid, page_owner->comm,
b459f0905eec31 Audra Mitchell 2023-10-13 553 page_owner->ts_nsec);
48c96a3685795e Joonsoo Kim 2014-12-12 554
48c96a3685795e Joonsoo Kim 2014-12-12 555 /* Print information relevant to grouping pages by mobility */
0b423ca22f95a8 Mel Gorman 2016-05-19 556 pageblock_mt = get_pageblock_migratetype(page);
01c0bfe061f309 Wei Yang 2020-06-03 557 page_mt = gfp_migratetype(page_owner->gfp_mask);
3ebc4397612732 Waiman Long 2022-03-24 @558 ret += scnprintf(kbuf + ret, count - ret,
399fd496c49b39 Kassey Li 2023-06-13 559 "PFN 0x%lx type %s Block %lu type %s Flags %pGp\n",
48c96a3685795e Joonsoo Kim 2014-12-12 560 pfn,
60f30350fd69a3 Vlastimil Babka 2016-03-15 561 migratetype_names[page_mt],
48c96a3685795e Joonsoo Kim 2014-12-12 562 pfn >> pageblock_order,
60f30350fd69a3 Vlastimil Babka 2016-03-15 563 migratetype_names[pageblock_mt],
23efd0804c0a86 Matthew Wilcox (Oracle 2021-10-19 564) &page->flags);
48c96a3685795e Joonsoo Kim 2014-12-12 565
0f68d45ef41abb Imran Khan 2021-11-08 566 ret += stack_depot_snprint(handle, kbuf + ret, count - ret, 0);
48c96a3685795e Joonsoo Kim 2014-12-12 567 if (ret >= count)
48c96a3685795e Joonsoo Kim 2014-12-12 568 goto err;
48c96a3685795e Joonsoo Kim 2014-12-12 569
9300d8dfd282bd Joonsoo Kim 2016-10-07 570 if (page_owner->last_migrate_reason != -1) {
3ebc4397612732 Waiman Long 2022-03-24 571 ret += scnprintf(kbuf + ret, count - ret,
7cd12b4abfd2f8 Vlastimil Babka 2016-03-15 572 "Page has been migrated, last migrate reason: %s\n",
9300d8dfd282bd Joonsoo Kim 2016-10-07 573 migrate_reason_names[page_owner->last_migrate_reason]);
7cd12b4abfd2f8 Vlastimil Babka 2016-03-15 574 }
7cd12b4abfd2f8 Vlastimil Babka 2016-03-15 575
fcf8935832b86d Waiman Long 2022-03-24 576 ret = print_page_owner_memcg(kbuf, count, ret, page);
fcf8935832b86d Waiman Long 2022-03-24 577
48c96a3685795e Joonsoo Kim 2014-12-12 578 ret += snprintf(kbuf + ret, count - ret, "\n");
48c96a3685795e Joonsoo Kim 2014-12-12 579 if (ret >= count)
48c96a3685795e Joonsoo Kim 2014-12-12 580 goto err;
48c96a3685795e Joonsoo Kim 2014-12-12 581
48c96a3685795e Joonsoo Kim 2014-12-12 582 if (copy_to_user(buf, kbuf, ret))
48c96a3685795e Joonsoo Kim 2014-12-12 583 ret = -EFAULT;
48c96a3685795e Joonsoo Kim 2014-12-12 584
48c96a3685795e Joonsoo Kim 2014-12-12 585 kfree(kbuf);
48c96a3685795e Joonsoo Kim 2014-12-12 586 return ret;
48c96a3685795e Joonsoo Kim 2014-12-12 587
48c96a3685795e Joonsoo Kim 2014-12-12 588 err:
48c96a3685795e Joonsoo Kim 2014-12-12 589 kfree(kbuf);
48c96a3685795e Joonsoo Kim 2014-12-12 590 return -ENOMEM;
48c96a3685795e Joonsoo Kim 2014-12-12 591 }
48c96a3685795e Joonsoo Kim 2014-12-12 592
:::::: The code at line 558 was first introduced by commit
:::::: 3ebc439761273274ea00258da84d997841f01e72 mm/page_owner: use scnprintf() to avoid excessive buffer overrun check
:::::: TO: Waiman Long <longman@redhat.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-10-07 4:38 UTC|newest]
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