[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>
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 3f6dc71..4673157 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -159,7 +159,7 @@
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 @@
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;