Re: [PATCH v2] block: add capacity validation in bdev_add_partition()

From: Greg KH
Date: Fri Jun 16 2023 - 04:03:44 EST


On Fri, Jun 16, 2023 at 11:05:57AM +0000, min15.li wrote:
> In the function bdev_add_partition(),there is no check that the start
> and end sectors exceed the size of the disk before calling add_partition.
> When we call the block's ioctl interface directly to add a partition,
> and the capacity of the disk is set to 0 by driver,the command will
> continue to execute.
> v1->v2: check for overflows of the start + length value and put
> the capacity check at the beginning of the function.
>
> Signed-off-by: min15.li <min15.li@xxxxxxxxxxx>

I doubt you sign documents as "min15.li", right? :)

Please fix.

You also forgot a "changes" list below the --- line saying what changed
from the previous submission.

thanks,

greg k-h