Re: [PATCH] block: fix overflow in blk_ioctl_discard()

[Li Nan]

在 2024/4/2 20:32, Christoph Hellwig 写道:
> On Fri, Mar 29, 2024 at 09:23:19AM +0800, linan666@xxxxxxxxxxxxxxx wrote:
> > From: Li Nan <linan122@xxxxxxxxxx>
> >
> > There is no check for overflow of 'start + len' in blk_ioctl_discard().
> > Hung task occurs if submit an discard ioctl with the following param:
> >    start = 0x80000000000ff000, len = 0x8000000000fff000;
> > Add the overflow validation now.
>
> Looks good:
>
> Reviewed-by: Christoph Hellwig <hch@xxxxxx>
>
> Can you wire up a testcase in blktests for this condition?

It's my pleasure, I will add testcase later.

> .

--
Thanks,
Nan