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May 08, 2024 at 12:56:37PM -0300, Jason Gunthorpe wrote: > On Wed, May 08, 2024 at 05:31:00PM +0200, Zhu Yanjun wrote: > > 在 2024/5/8 15:08, Yi Zhang 写道: > > > So bisect shows it was introduced with below commit, please help check > > > and fix it, thanks. > > > > > > commit f8ef1be816bf9a0c406c696368c2264a9597a994 > > > Author: Chuck Lever > > > Date: Mon Jul 17 11:12:32 2023 -0400 > > > > > > RDMA/cma: Avoid GID lookups on iWARP devices > > > > Not sure if the following can fix this problem or not. > > Please let me know the test result. > > Thanks a lot. > > > > diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c > > index 1e2cd7c8716e..901e6c40d560 100644 > > --- a/drivers/infiniband/core/cma.c > > +++ b/drivers/infiniband/core/cma.c > > @@ -715,9 +715,13 @@ cma_validate_port(struct ib_device *device, u32 port, > > rcu_read_lock(); > > ndev = rcu_dereference(sgid_attr->ndev); > > if (!net_eq(dev_net(ndev), dev_addr->net) || > > - ndev->ifindex != bound_if_index) > > + ndev->ifindex != bound_if_index) { > > + rdma_put_gid_attr(sgid_attr); > > sgid_attr = ERR_PTR(-ENODEV); > > + } > > rcu_read_unlock(); > > + if (!IS_ERR(sgid_attr)) > > + rdma_put_gid_attr(sgid_attr); > > goto out; > > } > > That does look needed regardless! > > Chuck? Releasing the sgid_attr looks sensible. Reviewed-by: Chuck Lever -- Chuck Lever