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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2016-09-19 14:44:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-09-19 15:36:16 -0700
commit4d35427ad7641cba08ea0deffae1a78147ad41c0 (patch)
tree832a652ea61f198004cd27bfa8cc56a24087d422 /crypto/camellia_generic.c
parent982785c6b05a82c01e90687b7e25ee87c8970b2e (diff)
mm: avoid endless recursion in dump_page()
dump_page() uses page_mapcount() to get mapcount of the page. page_mapcount() has VM_BUG_ON_PAGE(PageSlab(page)) as mapcount doesn't make sense for slab pages and the field in struct page used for other information. It leads to recursion if dump_page() called for slub page and DEBUG_VM is enabled: dump_page() -> page_mapcount() -> VM_BUG_ON_PAGE() -> dump_page -> ... Let's avoid calling page_mapcount() for slab pages in dump_page(). Link: http://lkml.kernel.org/r/20160908082137.131076-1-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'crypto/camellia_generic.c')
0 files changed, 0 insertions, 0 deletions