On Mon, 17 Feb 2025 11:16:26 +0800, Ming Lei wrote:

The block layer internal flush request may not have bio attached, so the
request iterator has to be initialized from valid req->bio, otherwise NULL
pointer dereferenced is triggered.

Applied, thanks!

[1/1] block: fix NULL pointer dereferenced within __blk_rq_map_sg
      commit: dd8b0582e25e36bba483c60338741c0ba5bc426c

Best regards,
-- 
Jens Axboe