From 4071b913622316970d0e1919f7d82b4403fec5f2 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 4 Sep 2014 16:19:47 +0200 Subject: [PATCH] udf: Properly detect stale inodes NFS can easily ask for inodes that are already deleted. Currently UDF happily returns such inodes which is a bug. Return -ESTALE if udf_read_inode() is asked to read deleted inode. Signed-off-by: Jan Kara --- fs/udf/inode.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 788fc58ea78e..3a44d9187aad 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -1435,8 +1435,10 @@ reread: read_unlock(&sbi->s_cred_lock); link_count = le16_to_cpu(fe->fileLinkCount); - if (!link_count) - link_count = 1; + if (!link_count) { + ret = -ESTALE; + goto out; + } set_nlink(inode, link_count); inode->i_size = le64_to_cpu(fe->informationLength); -- 2.20.1