nvme-rdma: fix possible use-after-free in transport error_recovery work

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: nvme-rdma: fix possible use-after-free in transport error_recovery work While nvme_rdma_submit_async_event_work is checking the ctrl and queue state before preparing the AER command and scheduling io_work, in order to fully prevent a race where this check is not reliable the error recovery work must flush async_event_work before continuing to destroy the admin queue after setting the ctrl state to RESETTING such that there is no race .submit_async_event and the error recovery handler itself changing the ctrl state.

References

• https://git.kernel.org/stable/c/5593f72d1922403c11749532e3a0aa4cf61414e9
• https://git.kernel.org/stable/c/d411b2a5da68b8a130c23097014434ac140a2ace
• https://git.kernel.org/stable/c/324f5bdc52ecb6a6dadb31a62823ef8c709d1439
• https://git.kernel.org/stable/c/646952b2210f19e584d2bf9eb5d092abdca2fcc1
• https://git.kernel.org/stable/c/ea86027ac467a055849c4945906f799e7f65ab99
• https://git.kernel.org/stable/c/b6bb1722f34bbdbabed27acdceaf585d300c5fd2