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authorChao Yu <chao2.yu@samsung.com>2014-03-12 17:08:36 +0800
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2014-03-12 18:15:38 +0900
commit910bb12d29cc64144506333bfeaeeee9715c3872 (patch)
treef93756833c6f2c2074f2a91b5dee46bb98286cd4 /fs/f2fs
parent987c7c31123fd36c1f792ff53ff131378475f5c8 (diff)
downloadblackbird-op-linux-910bb12d29cc64144506333bfeaeeee9715c3872.tar.gz
blackbird-op-linux-910bb12d29cc64144506333bfeaeeee9715c3872.zip
f2fs: check upper bound of ino value in f2fs_nfs_get_inode
Upper bound checking of ino should be added to f2fs_nfs_get_inode, so unneeded process before do_read_inode in f2fs_iget could be avoided when ino is invalid. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/super.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 6e4851ce029b..3a51d7a4a6c9 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -644,6 +644,8 @@ static struct inode *f2fs_nfs_get_inode(struct super_block *sb,
if (unlikely(ino < F2FS_ROOT_INO(sbi)))
return ERR_PTR(-ESTALE);
+ if (unlikely(ino >= NM_I(sbi)->max_nid))
+ return ERR_PTR(-ESTALE);
/*
* f2fs_iget isn't quite right if the inode is currently unallocated!
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