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authorMauro Carvalho Chehab <mchehab@s-opensource.com>2017-04-04 11:11:43 -0300
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2017-04-04 11:11:43 -0300
commit7ca0ef3da09888b303991edb80cd0283ee641c9e (patch)
tree6a512eabb960e1049f1365cb0cbcdf67b04d67b8 /mm/page_alloc.c
parentc3d4fb0fb41f4b5eafeee51173c14e50be12f839 (diff)
parenta71c9a1c779f2499fb2afc0553e543f18aff6edf (diff)
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Merge tag 'v4.11-rc5' into patchwork
Linux 4.11-rc5 * tag 'v4.11-rc5': (1168 commits) Linux 4.11-rc5 tty: pl011: fix earlycon work-around for QDF2400 erratum 44 kasan: do not sanitize kexec purgatory drivers/rapidio/devices/tsi721.c: make module parameter variable name unique mm/hugetlb.c: don't call region_abort if region_chg fails kasan: report only the first error by default hugetlbfs: initialize shared policy as part of inode allocation mm: fix section name for .data..ro_after_init mm, hugetlb: use pte_present() instead of pmd_present() in follow_huge_pmd() mm: workingset: fix premature shadow node shrinking with cgroups mm: rmap: fix huge file mmap accounting in the memcg stats mm: move mm_percpu_wq initialization earlier mm: migrate: fix remove_migration_pte() for ksm pages nfs: flexfiles: fix kernel OOPS if MDS returns unsupported DS type NFSv4.1 fix infinite loop on IO BAD_STATEID error serial: 8250_EXAR: fix duplicate Kconfig text and add missing help text tty/serial: atmel: fix TX path in atmel_console_write() tty/serial: atmel: fix race condition (TX+DMA) serial: mxs-auart: Fix baudrate calculation irqchip/mips-gic: Fix Local compare interrupt ...
Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index eaa64d2ffdc5..6cbde310abed 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -873,7 +873,8 @@ done_merging:
higher_page = page + (combined_pfn - pfn);
buddy_pfn = __find_buddy_pfn(combined_pfn, order + 1);
higher_buddy = higher_page + (buddy_pfn - combined_pfn);
- if (page_is_buddy(higher_page, higher_buddy, order + 1)) {
+ if (pfn_valid_within(buddy_pfn) &&
+ page_is_buddy(higher_page, higher_buddy, order + 1)) {
list_add_tail(&page->lru,
&zone->free_area[order].free_list[migratetype]);
goto out;