Messages in this thread Patch in this message | | | Date | Sun, 15 Jan 2006 15:02:52 +0300 | From | Alexey Dobriyan <> | Subject | [STABLE] Fix oops in ufs_fill_super at mount time |
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From: Evgeniy <dushistov@mail.ru>
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> ---
--- a/fs/ufs/util.h +++ b/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)-> \ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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