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| author |   zhengbin <zhengbin13@huawei.com> | 2019-08-19 12:27:39 +0800 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2019-08-20 13:44:45 -0400 |
| commit | a7bfb93f0211b4a2f1ffeeb259ed6206bac30460 (patch) | |
| tree | b5a930880d54241b3e4a05bef6bb5f4f17d43b36 /drivers/infiniband/core/cma.c | |
| parent | IB/mlx5: Block MR WR if UMR is not possible (diff) | |
| download | linux-dev-a7bfb93f0211b4a2f1ffeeb259ed6206bac30460.tar.xz linux-dev-a7bfb93f0211b4a2f1ffeeb259ed6206bac30460.zip | |
RDMA/cma: fix null-ptr-deref Read in cma_cleanup
In cma_init, if cma_configfs_init fails, need to free the
previously memory and return fail, otherwise will trigger
null-ptr-deref Read in cma_cleanup.
cma_cleanup
cma_configfs_exit
configfs_unregister_subsystem
Fixes: 045959db65c6 ("IB/cma: Add configfs for rdma_cm")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Link: https://lore.kernel.org/r/1566188859-103051-1-git-send-email-zhengbin13@huawei.com
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core/cma.c')
| -rw-r--r-- | drivers/infiniband/core/cma.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 19f1730a4f24..a68d0ccf67a4 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -4724,10 +4724,14 @@ static int __init cma_init(void) if (ret) goto err; - cma_configfs_init(); + ret = cma_configfs_init(); + if (ret) + goto err_ib; return 0; +err_ib: + ib_unregister_client(&cma_client); err: unregister_netdevice_notifier(&cma_nb); ib_sa_unregister_client(&sa_client); |