diff options
| author | luofei <[email protected]> | 2022-03-22 14:44:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2022-03-22 15:57:07 -0700 |
| commit | a06ad3c0c75297f0b0999b1a981e50224e690ee9 (patch) | |
| tree | 90dd550ee87f3218e1383702399644ecaad5a9aa | |
| parent | d1fe111fb62a1cf0446a2919f5effbb33ad0702c (diff) | |
mm/hwpoison: add in-use hugepage hwpoison filter judgement
After successfully obtaining the reference count of the huge page, it is
still necessary to call hwpoison_filter() to make a filter judgement,
otherwise the filter hugepage will be unmaped and the related process
may be killed.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: luofei <[email protected]>
Reviewed-by: Miaohe Lin <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Naoya Horiguchi <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Tony Luck <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | mm/memory-failure.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index f75a2ed72e69..086ae4eb3421 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1534,6 +1534,14 @@ static int memory_failure_hugetlb(unsigned long pfn, int flags) lock_page(head); page_flags = head->flags; + if (hwpoison_filter(p)) { + if (TestClearPageHWPoison(head)) + num_poisoned_pages_dec(); + put_page(p); + res = -EOPNOTSUPP; + goto out; + } + /* * TODO: hwpoison for pud-sized hugetlb doesn't work right now, so * simply disable it. In order to make it work properly, we need |