This is a note to let you know that I've just added the patch titled RDMA/rxe: Don't overwrite errno from ib_umem_get() to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: rdma-rxe-don-t-overwrite-errno-from-ib_umem_get.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 3bd51c9553057aea1e8dfa9233474553092a76a2 Author: Xiao Yang <yangx.jy@xxxxxxxxxxx> Date: Mon Jun 21 15:14:56 2021 +0800 RDMA/rxe: Don't overwrite errno from ib_umem_get() [ Upstream commit 20ec0a6d6016aa28b9b3299be18baef1a0f91cd2 ] rxe_mr_init_user() always returns the fixed -EINVAL when ib_umem_get() fails so it's hard for user to know which actual error happens in ib_umem_get(). For example, ib_umem_get() will return -EOPNOTSUPP when trying to pin pages on a DAX file. Return actual error as mlx4/mlx5 does. Link: https://lore.kernel.org/r/20210621071456.4259-1-ice_yangxiao@xxxxxxx Signed-off-by: Xiao Yang <yangx.jy@xxxxxxxxxxx> Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/infiniband/sw/rxe/rxe_mr.c b/drivers/infiniband/sw/rxe/rxe_mr.c index d2ce852447c1..026285f7f36a 100644 --- a/drivers/infiniband/sw/rxe/rxe_mr.c +++ b/drivers/infiniband/sw/rxe/rxe_mr.c @@ -139,7 +139,7 @@ int rxe_mem_init_user(struct rxe_pd *pd, u64 start, if (IS_ERR(umem)) { pr_warn("err %d from rxe_umem_get\n", (int)PTR_ERR(umem)); - err = -EINVAL; + err = PTR_ERR(umem); goto err1; }