Al Viro observes that in the hugetlb case, handle_mm_fault() may return a value of the kind ENOSPC when its caller is expecting a value of the kind VM_FAULT_SIGBUS: fix alloc_huge_page()'s failure returns. Signed-off-by: Hugh Dickins <hughd@xxxxxxxxxx> Acked-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx> Cc: stable@xxxxxxxxxx --- mm/hugetlb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- 3.0-rc1/mm/hugetlb.c 2011-05-29 18:42:37.425882575 -0700 +++ linux/mm/hugetlb.c 2011-06-05 13:33:22.795341004 -0700 @@ -1033,10 +1033,10 @@ static struct page *alloc_huge_page(stru */ chg = vma_needs_reservation(h, vma, addr); if (chg < 0) - return ERR_PTR(chg); + return ERR_PTR(-VM_FAULT_OOM); if (chg) if (hugetlb_get_quota(inode->i_mapping, chg)) - return ERR_PTR(-ENOSPC); + return ERR_PTR(-VM_FAULT_SIGBUS); spin_lock(&hugetlb_lock); page = dequeue_huge_page_vma(h, vma, addr, avoid_reserve); -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>