This is a good email to discuss on the scsi list:
[email protected]; whom I've added to the cc list.
On Tue, 2006-03-21 at 10:38 +0200, Dan Aloni wrote:
> Improper calculation of the number of pages causes bio_alloc() to
> be called with nr_iovecs=0, and slab corruption later.
>
> For example, a simple scatterlist that fails: {(3644,452), (0, 60)},
> (offset, size). bufflen=512 => nr_pages=1 => breakage. The proper
> page count for this example is 2.
Such a scatterlist would likely violate the device's underlying
boundaries and is not legal ... there's supposed to be special code
checking the queue alignment and copying the bio to an aligned buffer if
the limits are violated. Where are you generating these scatterlists
from?
James
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
