diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/huge_memory.c | 7 | ||||
| -rw-r--r-- | mm/kfence/core.c | 10 | ||||
| -rw-r--r-- | mm/memory-failure.c | 15 | ||||
| -rw-r--r-- | mm/mremap.c | 2 |
4 files changed, 18 insertions, 16 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index c468fee595ff..910a138e9859 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2495,11 +2495,16 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) struct address_space *mapping = NULL; int extra_pins, ret; pgoff_t end; + bool is_hzp; - VM_BUG_ON_PAGE(is_huge_zero_page(head), head); VM_BUG_ON_PAGE(!PageLocked(head), head); VM_BUG_ON_PAGE(!PageCompound(head), head); + is_hzp = is_huge_zero_page(head); + VM_WARN_ON_ONCE_PAGE(is_hzp, head); + if (is_hzp) + return -EBUSY; + if (PageWriteback(head)) return -EBUSY; diff --git a/mm/kfence/core.c b/mm/kfence/core.c index 9b2b5f56f4ae..11a954763be9 100644 --- a/mm/kfence/core.c +++ b/mm/kfence/core.c @@ -621,6 +621,16 @@ static bool __init kfence_init_pool_early(void) * fails for the first page, and therefore expect addr==__kfence_pool in * most failure cases. */ + for (char *p = (char *)addr; p < __kfence_pool + KFENCE_POOL_SIZE; p += PAGE_SIZE) { + struct slab *slab = virt_to_slab(p); + + if (!slab) + continue; +#ifdef CONFIG_MEMCG + slab->memcg_data = 0; +#endif + __folio_clear_slab(slab_folio(slab)); + } memblock_free_late(__pa(addr), KFENCE_POOL_SIZE - (addr - (unsigned long)__kfence_pool)); __kfence_pool = NULL; return false; diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 27760c19bad7..d4a4adcca01f 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1274,7 +1274,7 @@ try_again: } out: if (ret == -EIO) - dump_page(p, "hwpoison: unhandlable page"); + pr_err("Memory failure: %#lx: unhandlable page.\n", page_to_pfn(p)); return ret; } @@ -1861,19 +1861,6 @@ try_again: if (PageTransHuge(hpage)) { /* - * Bail out before SetPageHasHWPoisoned() if hpage is - * huge_zero_page, although PG_has_hwpoisoned is not - * checked in set_huge_zero_page(). - * - * TODO: Handle memory failure of huge_zero_page thoroughly. - */ - if (is_huge_zero_page(hpage)) { - action_result(pfn, MF_MSG_UNSPLIT_THP, MF_IGNORED); - res = -EBUSY; - goto unlock_mutex; - } - - /* * The flag must be set after the refcount is bumped * otherwise it may race with THP split. * And the flag can't be set in get_hwpoison_page() since diff --git a/mm/mremap.c b/mm/mremap.c index 303d3290b938..0b93fac76851 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -947,7 +947,7 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len, return -EINTR; vma = vma_lookup(mm, addr); if (!vma) { - ret = EFAULT; + ret = -EFAULT; goto out; } |