diff options
| author | Sagi Grimberg | 2022-02-01 14:54:21 +0200 |
|---|---|---|
| committer | Christoph Hellwig | 2022-02-02 09:19:07 +0100 |
| commit | b6bb1722f34bbdbabed27acdceaf585d300c5fd2 (patch) | |
| tree | feefdfcf880e3b2cc695749064b184fc80a5c329 /drivers | |
| parent | ff9fc7ebf5c06de1ef72a69f9b1ab40af8b07f9e (diff) | |
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.
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nvme/host/rdma.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index 850f84d204d0..9c55e4be8a39 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -1200,6 +1200,7 @@ static void nvme_rdma_error_recovery_work(struct work_struct *work) struct nvme_rdma_ctrl, err_work); nvme_stop_keep_alive(&ctrl->ctrl); + flush_work(&ctrl->ctrl.async_event_work); nvme_rdma_teardown_io_queues(ctrl, false); nvme_start_queues(&ctrl->ctrl); nvme_rdma_teardown_admin_queue(ctrl, false); |