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| author | Evgeniy <dushistov@mail.ru> | 2006-01-13 18:12:15 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-01-30 22:13:17 -0800 |
| commit | 4f3bfdc30b23e63d9c215e47192f427c2d7d4774 (patch) | |
| tree | 491c48cd4f298ae6137c062c5cbcfaaeb57a31c6 | |
| parent | 1518d0b7a1ab6465487491c374bd18df6a4c036b (diff) | |
| download | lwn-4f3bfdc30b23e63d9c215e47192f427c2d7d4774.tar.gz lwn-4f3bfdc30b23e63d9c215e47192f427c2d7d4774.zip | |
[PATCH] Fix oops in ufs_fill_super at mount time
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@mail.ru>
Acked-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | fs/ufs/util.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ufs/util.h b/fs/ufs/util.h index b2640076679a..e45ad5379872 100644 --- a/fs/ufs/util.h +++ b/fs/ufs/util.h @@ -255,8 +255,8 @@ extern void _ubh_memcpyubh_(struct ufs_sb_private_info *, struct ufs_buffer_head ((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)-> \ |