Re: [PATCH] block: make sure ->nr_integrity_segments is cloned in blk_rq_prep_clone

On Mon, Mar 10, 2025 at 05:16:10PM +0800, Ming Lei wrote:

Make sure ->nr_integrity_segments is cloned in blk_rq_prep_clone(), otherwise zero ->nr_integrity_segments will be observed in sg_alloc_table_chained(), in which BUG() is hit.

Maybe reword this to:

... otherwise requests cloned by device-mapper multipath will not have the prope nr_integrity_segments values set?

The fact that sg_alloc_table_chained BUG⁽)s is just a symptom of that.

Cc: stable@vger.kernel.org

... and replace this with a proper Fixes tag?