diff options
| author |   Bharat Potnuri <bharat@chelsio.com> | 2017-08-01 10:58:35 +0530 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-08-22 13:55:47 -0400 |
| commit | 65159c051c45f269cf40a14f9404248f2d524920 (patch) | |
| tree | aeea737fa13045458f61dc6f0f285703db9b277b /drivers/infiniband/core/uverbs_cmd.c | |
| parent | IB/uverbs: Fix NULL pointer dereference during device removal (diff) | |
| download | linux-dev-65159c051c45f269cf40a14f9404248f2d524920.tar.xz linux-dev-65159c051c45f269cf40a14f9404248f2d524920.zip | |
RDMA/uverbs: Initialize cq_context appropriately
Initializing cq_context with ev_queue in create_cq(), leads to NULL pointer
dereference in ib_uverbs_comp_handler(), if application doesnot use completion
channel. This patch fixes the cq_context initialization.
Fixes: 1e7710f3f65 ("IB/core: Change completion channel to use the reworked")
Cc: stable@vger.kernel.org # 4.12
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Reviewed-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
(cherry picked from commit 699a2d5b1b880b4e4e1c7d55fa25659322cf5b51)
Diffstat (limited to 'drivers/infiniband/core/uverbs_cmd.c')
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index c551d2b275fd..55822ae71955 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -1015,7 +1015,7 @@ static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file, cq->uobject = &obj->uobject; cq->comp_handler = ib_uverbs_comp_handler; cq->event_handler = ib_uverbs_cq_event_handler; - cq->cq_context = &ev_file->ev_queue; + cq->cq_context = ev_file ? &ev_file->ev_queue : NULL; atomic_set(&cq->usecnt, 0); obj->uobject.object = cq; |