mm, hwpoison: fix page refcnt leaking in try_memory_failure_hugetlb()

Patch series "A few fixup patches for memory-failure", v2.

This series contains a few fixup patches to fix incorrect update of page
refcnt, fix possible use-after-free issue and so on.  More details can be
found in the respective changelogs.

This patch (of 6):

When hwpoison_filter() refuses to hwpoison a hugetlb page, the refcnt of
the page would have been incremented if res == 1.  Using put_page() to fix
the refcnt leaking in this case.

Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Fixes: 405ce051236c ("mm/hwpoison: fix race between hugetlb free/demotion and memory_failure_hugetlb()")
Signed-off-by: Miaohe Lin <[email protected]>
Acked-by: Naoya Horiguchi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions