lkml.org 
[lkml]   [2021]   [Jan]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v6 5/5] mm: hugetlb: remove VM_BUG_ON_PAGE from page_huge_active
On Fri, Jan 15, 2021 at 08:49:42PM +0800, Muchun Song wrote:
> The page_huge_active() can be called from scan_movable_pages() which
> do not hold a reference count to the HugeTLB page. So when we call
> page_huge_active() from scan_movable_pages(), the HugeTLB page can
> be freed parallel. Then we will trigger a BUG_ON which is in the
> page_huge_active() when CONFIG_DEBUG_VM is enabled. Just remove the
> VM_BUG_ON_PAGE.
>
> Fixes: 7e1f049efb86 ("mm: hugetlb: cleanup using paeg_huge_active()")
> Signed-off-by: Muchun Song <songmuchun@bytedance.com>
> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
> Acked-by: Michal Hocko <mhocko@suse.com>
> Cc: stable@vger.kernel.org

Reviewed-by: Oscar Salvador <osalvador@suse.de>

--
Oscar Salvador
SUSE L3

\
 
 \ /
  Last update: 2021-01-15 14:31    [W:0.063 / U:1.960 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site