[PATCH] coverity: fs/udf/namei.c null check

"dir" was dereferenced before null check

Signed-off-by: Zaur Kambarov <zkambarov@coverity.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 3f6dc7112bc6..4673157b262f 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -159,7 +159,7 @@ udf_find_entry(struct inode *dir, struct dentry *dentry,
         char *nameptr;
         uint8_t lfi;
         uint16_t liu;
-        loff_t size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
+        loff_t size;
         kernel_lb_addr bloc, eloc;
         uint32_t extoffset, elen, offset;
         struct buffer_head *bh = NULL;
@@ -167,6 +167,8 @@ udf_find_entry(struct inode *dir, struct dentry *dentry,
         if (!dir)
                 return NULL;
 
+        size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
+
         f_pos = (udf_ext0_offset(dir) >> 2);
 
         fibh->soffset = fibh->eoffset = (f_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2;