[patch 05/12] Fix oops in ufs_fill_super at mount time

[Greg KH]

2.6.15.2 -stable review patch.  If anyone has any objections, please let 
us know.

------------------

From: Evgeniy <dushistov@xxxxxxx>

There's a lack of parenthesis in fs/ufs/utils.h, so instead of the 512th
byte of buffer, the usb2 pointer will point to the nth structure of type
ufs_super_block_second.

This can cause a mount-time oops if you're unlucky (especially with
DEBUG_PAGEALLOC, which is how Alexey Dobriyan saw this problem)

Signed-off-by: Evgeniy Dushistov <dushistov@xxxxxxx>
Acked-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
 fs/ufs/util.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- linux-2.6.15.1.orig/fs/ufs/util.h
+++ linux-2.6.15.1/fs/ufs/util.h
@@ -255,8 +255,8 @@ extern void _ubh_memcpyubh_(struct ufs_s
 	((struct ufs_super_block_first *)((ubh)->bh[0]->b_data))
 
 #define ubh_get_usb_second(ubh) \
-	((struct ufs_super_block_second *)(ubh)-> \
-	bh[UFS_SECTOR_SIZE >> uspi->s_fshift]->b_data + (UFS_SECTOR_SIZE & ~uspi->s_fmask))
+	((struct ufs_super_block_second *)((ubh)->\
+	bh[UFS_SECTOR_SIZE >> uspi->s_fshift]->b_data + (UFS_SECTOR_SIZE & ~uspi->s_fmask)))
 
 #define ubh_get_usb_third(ubh) \
 	((struct ufs_super_block_third *)((ubh)-> \

--
-
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