diff options
| author |   Max Gurtovoy <maxg@mellanox.com> | 2019-10-29 16:42:27 +0200 |
|---|---|---|
| committer |   Keith Busch <kbusch@kernel.org> | 2019-11-06 00:29:23 +0900 |
| commit | 9ad9e8d6ca29c1446d81c6518ae634a2141dfd22 (patch) | |
| tree | 67946f38c080349786fd895bee42dbf46ab84cc4 /drivers | |
| parent | iocost: don't nest spin_lock_irq in ioc_weight_write() (diff) | |
| download | linux-dev-9ad9e8d6ca29c1446d81c6518ae634a2141dfd22.tar.xz linux-dev-9ad9e8d6ca29c1446d81c6518ae634a2141dfd22.zip | |
nvme-rdma: fix a segmentation fault during module unload
In case there are controllers that are not associated with any RDMA
device (e.g. during unsuccessful reconnection) and the user will unload
the module, these controllers will not be freed and will access already
freed memory. The same logic appears in other fabric drivers as well.
Fixes: 87fd125344d6 ("nvme-rdma: remove redundant reference between ib_device and tagset")
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nvme/host/rdma.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index f19a28b4e997..cb4c3000a57e 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -2133,8 +2133,16 @@ err_unreg_client: static void __exit nvme_rdma_cleanup_module(void) { + struct nvme_rdma_ctrl *ctrl; + nvmf_unregister_transport(&nvme_rdma_transport); ib_unregister_client(&nvme_rdma_ib_client); + + mutex_lock(&nvme_rdma_ctrl_mutex); + list_for_each_entry(ctrl, &nvme_rdma_ctrl_list, list) + nvme_delete_ctrl(&ctrl->ctrl); + mutex_unlock(&nvme_rdma_ctrl_mutex); + flush_workqueue(nvme_delete_wq); } module_init(nvme_rdma_init_module); |