mm/memblock.c: fix memblock_next_valid_pfn()
authorAKASHI Takahiro <takahiro.akashi@linaro.org>
Fri, 10 Mar 2017 00:17:17 +0000 (16:17 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 10 Mar 2017 01:01:10 +0000 (17:01 -0800)
commitc9a1b80daeb50e39f21fd7e62f7224f317ac85f0
treeba7d2f2a78fafcef679688d2d059797fee7a1053
parent46aa6a302b53f543f8e8b8e1714dc5e449ad36a6
mm/memblock.c: fix memblock_next_valid_pfn()

Obviously, we should not access memblock.memory.regions[right] if
'right' is outside of [0..memblock.memory.cnt>.

Fixes: b92df1de5d28 ("mm: page_alloc: skip over regions of invalid pfns where possible")
Link: http://lkml.kernel.org/r/20170303023745.9104-1-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/memblock.c