Commit 65a81b61 authored by Bob Pearson's avatar Bob Pearson Committed by Jason Gunthorpe

RDMA/rxe: Fix memory allocation while in a spin lock

rxe_mcast_add_grp_elem() in rxe_mcast.c calls rxe_alloc() while holding
spinlocks which in turn calls kzalloc(size, GFP_KERNEL) which is
incorrect.  This patch replaces rxe_alloc() by rxe_alloc_locked() which
uses GFP_ATOMIC.  This bug was caused by the below mentioned commit and
failing to handle the need for the atomic allocate.

Fixes: 4276fd0d ("RDMA/rxe: Remove RXE_POOL_ATOMIC")
Link: https://lore.kernel.org/r/20210813210625.4484-1-rpearsonhpe@gmail.comReported-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarBob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent a036ad08
......@@ -85,7 +85,7 @@ int rxe_mcast_add_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
goto out;
}
elem = rxe_alloc(&rxe->mc_elem_pool);
elem = rxe_alloc_locked(&rxe->mc_elem_pool);
if (!elem) {
err = -ENOMEM;
goto out;
......
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