Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.13 17/27] mm/sparse.c: fix typo in online_mem_sections | Date | Tue, 12 Sep 2017 09:59:57 -0700 |
| |
4.13-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michal Hocko <mhocko@suse.com>
commit b4ccec41af82b5a5518c6534444412961894f07c upstream.
online_mem_sections() accidentally marks online only the first section in the given range. This is a typo which hasn't been noticed because I haven't tested large 2GB blocks previously. All users of pfn_to_online_page would get confused on the the rest of the pfn range in the block.
All we need to fix this is to use iterator (pfn) rather than start_pfn.
Link: http://lkml.kernel.org/r/20170904112210.3401-1-mhocko@kernel.org Fixes: 2d070eab2e82 ("mm: consider zone which is not fully populated to have holes") Signed-off-by: Michal Hocko <mhocko@suse.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- mm/sparse.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/sparse.c +++ b/mm/sparse.c @@ -630,7 +630,7 @@ void online_mem_sections(unsigned long s unsigned long pfn; for (pfn = start_pfn; pfn < end_pfn; pfn += PAGES_PER_SECTION) { - unsigned long section_nr = pfn_to_section_nr(start_pfn); + unsigned long section_nr = pfn_to_section_nr(pfn); struct mem_section *ms; /* onlining code should never touch invalid ranges */
| |