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| author | Gerd Rausch <gerd.rausch@oracle.com> | 2021-06-24 11:55:31 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-19 09:44:53 +0200 |
| commit | 3d08b5917984f737f32d5bee9737b9075c3895c6 (patch) | |
| tree | 411028bb0af81e8b45669f6ca93c59e30b3107c0 | |
| parent | a8585fdf42b5f066f05cb12f122c382dc668cd7e (diff) | |
| download | linux-stable-3d08b5917984f737f32d5bee9737b9075c3895c6.tar.gz linux-stable-3d08b5917984f737f32d5bee9737b9075c3895c6.tar.bz2 linux-stable-3d08b5917984f737f32d5bee9737b9075c3895c6.zip | |
RDMA/cma: Fix rdma_resolve_route() memory leak
[ Upstream commit 74f160ead74bfe5f2b38afb4fcf86189f9ff40c9 ]
Fix a memory leak when "mda_resolve_route() is called more than once on
the same "rdma_cm_id".
This is possible if cma_query_handler() triggers the
RDMA_CM_EVENT_ROUTE_ERROR flow which puts the state machine back and
allows rdma_resolve_route() to be called again.
Link: https://lore.kernel.org/r/f6662b7b-bdb7-2706-1e12-47c61d3474b6@oracle.com
Signed-off-by: Gerd Rausch <gerd.rausch@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/infiniband/core/cma.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 0c879e40bd18..34b94e525390 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -2793,7 +2793,8 @@ static int cma_resolve_ib_route(struct rdma_id_private *id_priv, cma_init_resolve_route_work(work, id_priv); - route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); + if (!route->path_rec) + route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); if (!route->path_rec) { ret = -ENOMEM; goto err1; |