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
