Re: CVE-2025-40146: blk-mq: fix potential deadlock while nr_requests grown

[Zheng Qixing]

Hi,

Commit b86433721f46 ("blk-mq: fix potential deadlock while nr_requests 
grown")  aims to avoid a deadlock issue when the queue is frozen and 
memory reclaim is triggered.

However, the sysfs nr_requests update path is already under a 
memalloc_noio_save() region while the queue is frozen (via 
blk_mq_freeze_queue()).

Would it be possible to reject this CVE, or clarify why it needs CVE 
assignment in this case?

Any feedback or further explanation would be appreciated.


Best regards,

Qixing