diff options
| author | Miaohe Lin <linmiaohe@huawei.com> | 2022-08-18 21:00:12 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-09-11 20:25:57 -0700 |
| commit | 6bbabd041dfd4823c752940286656d404621bf38 (patch) | |
| tree | 8adb134e06bcc44817461a154f64abb5702dac93 /mm/memory-failure.c | |
| parent | f36a5543a74883c21a59b8082b403a13c7654769 (diff) | |
| download | linux-6bbabd041dfd4823c752940286656d404621bf38.tar.gz | |
mm, hwpoison: fix page refcnt leaking in unpoison_memory()
When free_raw_hwp_pages() fails its work, the refcnt of the hugetlb page
would have been incremented if ret > 0. Using put_page() to fix refcnt
leaking in this case.
Link: https://lkml.kernel.org/r/20220818130016.45313-3-linmiaohe@huawei.com
Fixes: debb6b9c3fdd ("mm, hwpoison: make unpoison aware of raw error info in hwpoisoned hugepage")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memory-failure.c')
| -rw-r--r-- | mm/memory-failure.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 3f98fa2ac6cf5..f391818c9eac9 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -2378,6 +2378,7 @@ int unpoison_memory(unsigned long pfn) count = free_raw_hwp_pages(page, false); if (count == 0) { ret = -EBUSY; + put_page(page); goto unlock_mutex; } } |