mm/hwpoison: fix the lack of one reference count against poisoned page

[cascardo/linux.git] / mm / hwpoison-inject.c

diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c
index afc2daa..4c84678 100644 (file)
--- a/mm/hwpoison-inject.c
+++ b/mm/hwpoison-inject.c
@@ -20,8 +20,6 @@ static int hwpoison_inject(void *data, u64 val)
        if (!capable(CAP_SYS_ADMIN))
                return -EPERM;
 
-       if (!hwpoison_filter_enable)
-               goto inject;
        if (!pfn_valid(pfn))
                return -ENXIO;
 
@@ -33,6 +31,9 @@ static int hwpoison_inject(void *data, u64 val)
        if (!get_page_unless_zero(hpage))
                return 0;
 
+       if (!hwpoison_filter_enable)
+               goto inject;
+
        if (!PageLRU(p) && !PageHuge(p))
                shake_page(p, 0);
        /*