linux-kernel - Re: [PATCH v11 0/6] Use pageblock_order for cma and alloc_contig

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Date:   Fri, 20 May 2022 15:41:27 -0400
From:   Qian Cai <quic_qiancai@...cinc.com>
To:     Zi Yan <ziy@...dia.com>
CC:     David Hildenbrand <david@...hat.com>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>,
        <virtualization@...ts.linux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Eric Ren <renzhengeek@...il.com>,
        Mike Rapoport <rppt@...nel.org>,
        "Oscar Salvador" <osalvador@...e.de>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v11 0/6] Use pageblock_order for cma and
 alloc_contig_range alignment.

On Fri, May 20, 2022 at 10:13:51AM -0400, Zi Yan wrote:
> Also, do you mind providing the page dump of the 512-page compound page? I would like
> to know what page caused the issue.

 page last allocated via order 9, migratetype Movable, gfp_mask 0x3c24ca(GFP_TRANSHUGE|__GFP_THISNODE), pid 831, tgid 831 (khugepaged), ts 3899865924520, free_ts 3821953009040
  post_alloc_hook
  get_page_from_freelist
  __alloc_pages
  khugepaged_alloc_page
  collapse_huge_page
  khugepaged_scan_pmd
  khugepaged_scan_mm_slot
  khugepaged
  kthread
  ret_from_fork
 page last free stack trace:
  free_pcp_prepare
  free_unref_page
  free_compound_page
  free_transhuge_page
  __put_compound_page
  release_pages
  free_pages_and_swap_cache
  tlb_batch_pages_flush
  tlb_finish_mmu
  exit_mmap
  __mmput
  mmput
  exit_mm
  do_exit
  do_group_exit
  __arm64_sys_exit_group