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authorLeon Romanovsky <leonro@mellanox.com>2019-06-16 15:05:20 +0300
committerDoug Ledford <dledford@redhat.com>2019-06-20 15:17:59 -0400
commit836a0fbb3e76f704ad65ddfb57f00725245e509b (patch)
tree30d961b48c7029a952e6eeb5077d76ce0e4a5221 /drivers/infiniband/hw/ocrdma
parentRDMA/hns: reset function when removing module (diff)
downloadlinux-dev-836a0fbb3e76f704ad65ddfb57f00725245e509b.tar.xz
linux-dev-836a0fbb3e76f704ad65ddfb57f00725245e509b.zip
RDMA: Check umem pointer validity prior to release
Update ib_umem_release() to behave similarly to kfree() and allow submitting NULL pointer as safe input to this function. Fixes: a52c8e2469c3 ("RDMA: Clean destroy CQ in drivers do not return errors") Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/ocrdma')
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_verbs.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index 10b35edb286b..bccc11378109 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -925,8 +925,7 @@ int ocrdma_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata)
ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr);
/* it could be user registered memory. */
- if (mr->umem)
- ib_umem_release(mr->umem);
+ ib_umem_release(mr->umem);
kfree(mr);
/* Don't stop cleanup, in case FW is unresponsive */