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| author | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2016-02-02 16:57:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-02-03 08:28:43 -0800 |
| commit | 12c9d70bd5056b3ae84746fca973c286f48384cc (patch) | |
| tree | f6b95cb55c397b738b8509c03d895fa8e2bd6f21 /mm/vmscan.c | |
| parent | c6400ba7e13a41539342f1b6e1f9e78419cb0148 (diff) | |
| download | linux-12c9d70bd5056b3ae84746fca973c286f48384cc.tar.bz2 | |
mm: fix memory leak in copy_huge_pmd()
We allocate a pgtable but do not attach it to anything if the PMD is in
a DAX VMA, causing it to leak.
We certainly try to not free pgtables associated with the huge zero page
if the zero page is in a DAX VMA, so I think this is the right solution.
This needs to be properly audited.
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Acked-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 'mm/vmscan.c')
0 files changed, 0 insertions, 0 deletions