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| author | Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2014-06-23 13:22:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-23 16:47:43 -0700 |
| commit | 4a705fef986231a3e7a6b1a6d3c37025f021f49f (patch) | |
| tree | 540d2a129fa06a8441050071a2a2fa53f953bc41 /mm/mmzone.c | |
| parent | 13ace4d0d9db40e10ecd66dfda14e297571be813 (diff) | |
| download | op-kernel-dev-4a705fef986231a3e7a6b1a6d3c37025f021f49f.zip op-kernel-dev-4a705fef986231a3e7a6b1a6d3c37025f021f49f.tar.gz | |
hugetlb: fix copy_hugetlb_page_range() to handle migration/hwpoisoned entry
There's a race between fork() and hugepage migration, as a result we try
to "dereference" a swap entry as a normal pte, causing kernel panic.
The cause of the problem is that copy_hugetlb_page_range() can't handle
"swap entry" family (migration entry and hwpoisoned entry) so let's fix
it.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: <stable@vger.kernel.org> [2.6.37+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mmzone.c')
0 files changed, 0 insertions, 0 deletions
