Re: [PATCH] block: bio-integrity: fix potential null-ptr-deref in bio_integrity_free

[yebin]

On 2024/6/6 14:44, Christoph Hellwig wrote:
> What kernel is this on?  As of Linux 6.9 we are now always freezing
v4.18
> the queue while updating the logical_block_size in the nvme driver,
> so there should be no inflight I/O while it is changing.
The root cause of the problem is that there is no concurrency protection 
between
issuing DIO checks in __ blkdev direct IO simple() and updating logical 
block sizes ,
resulting in the block layer being able to see DIOs that are not aligned 
with logical
blocks.