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authorLeon Romanovsky <leonro@mellanox.com>2019-08-15 11:38:28 +0300
committerDoug Ledford <dledford@redhat.com>2019-08-20 13:44:44 -0400
commitc8b32408b4074232d93e64b6c23b2aa96dde448e (patch)
tree8b13537145129077d109e4e47d4602df1fec3cda /drivers/infiniband/core
parentIB/core: Fix NULL pointer dereference when bind QP to counter (diff)
downloadlinux-dev-c8b32408b4074232d93e64b6c23b2aa96dde448e.tar.xz
linux-dev-c8b32408b4074232d93e64b6c23b2aa96dde448e.zip
RDMA/counters: Properly implement PID checks
"Auto" configuration mode is called for visible in that PID namespace and it ensures that all counters and QPs are coexist in the same namespace and belong to same PID. Fixes: 99fa331dc862 ("RDMA/counter: Add "auto" configuration mode support") Reviewed-by: Mark Zhang <markz@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Link: https://lore.kernel.org/r/20190815083834.9245-3-leon@kernel.org Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core')
-rw-r--r--drivers/infiniband/core/counters.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/infiniband/core/counters.c b/drivers/infiniband/core/counters.c
index 955d061af06a..af8c85d18e62 100644
--- a/drivers/infiniband/core/counters.c
+++ b/drivers/infiniband/core/counters.c
@@ -149,13 +149,11 @@ static bool auto_mode_match(struct ib_qp *qp, struct rdma_counter *counter,
struct auto_mode_param *param = &counter->mode.param;
bool match = true;
- if (rdma_is_kernel_res(&counter->res) != rdma_is_kernel_res(&qp->res))
+ if (!rdma_is_visible_in_pid_ns(&qp->res))
return false;
- /* Ensure that counter belong to right PID */
- if (!rdma_is_kernel_res(&counter->res) &&
- !rdma_is_kernel_res(&qp->res) &&
- (task_pid_vnr(counter->res.task) != current->pid))
+ /* Ensure that counter belongs to the right PID */
+ if (task_pid_nr(counter->res.task) != task_pid_nr(qp->res.task))
return false;
if (auto_mask & RDMA_COUNTER_MASK_QP_TYPE)