diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory-failure.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index b0664c2..bba2d7c 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1445,6 +1445,22 @@ int unpoison_memory(unsigned long pfn) return 0; } + if (page_count(page) > 1) { + pr_info("MCE: Someone grabs the hwpoison page %#lx\n", pfn); + return 0; + } + + if (page_mapped(page)) { + pr_info("MCE: Someone maps the hwpoison page %#lx\n", pfn); + return 0; + } + + if (page_mapping(page)) { + pr_info("MCE: the hwpoison page has non-NULL mapping %#lx\n", + pfn); + return 0; + } + /* * unpoison_memory() can encounter thp only when the thp is being * worked by memory_failure() and the page lock is not held yet. |
