diff options
| author | Jason Gunthorpe <jgg@mellanox.com> | 2020-03-10 11:25:36 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-03-17 17:05:52 -0300 |
| commit | 153a2e432e3d323b633155633429dcaf71ea7c53 (patch) | |
| tree | 45d0dbaff3822de61c76f741482c64ae88395a2e /drivers | |
| parent | 98f67156a80f37db70ec64787020b1f9bc8aea8c (diff) | |
RDMA/cm: Read id.state under lock when doing pr_debug()
The lock should not be dropped before doing the pr_debug() print as it is
accessing data protected by the lock, such as id.state.
Fixes: 119bf81793ea ("IB/cm: Add debug prints to ib_cm")
Link: https://lore.kernel.org/r/20200310092545.251365-7-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/core/cm.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c index d2783d5dd4dc..79ad3d64837e 100644 --- a/drivers/infiniband/core/cm.c +++ b/drivers/infiniband/core/cm.c @@ -2394,13 +2394,13 @@ static int cm_rep_handler(struct cm_work *work) case IB_CM_MRA_REQ_RCVD: break; default: - spin_unlock_irq(&cm_id_priv->lock); ret = -EINVAL; pr_debug( "%s: cm_id_priv->id.state: %d, local_comm_id %d, remote_comm_id %d\n", __func__, cm_id_priv->id.state, IBA_GET(CM_REP_LOCAL_COMM_ID, rep_msg), IBA_GET(CM_REP_REMOTE_COMM_ID, rep_msg)); + spin_unlock_irq(&cm_id_priv->lock); goto error; } @@ -2666,10 +2666,10 @@ int ib_send_cm_drep(struct ib_cm_id *cm_id, cm_id_priv = container_of(cm_id, struct cm_id_private, id); spin_lock_irqsave(&cm_id_priv->lock, flags); if (cm_id->state != IB_CM_DREQ_RCVD) { - spin_unlock_irqrestore(&cm_id_priv->lock, flags); - kfree(data); pr_debug("%s: local_id %d, cm_idcm_id->state(%d) != IB_CM_DREQ_RCVD\n", __func__, be32_to_cpu(cm_id->local_id), cm_id->state); + spin_unlock_irqrestore(&cm_id_priv->lock, flags); + kfree(data); return -EINVAL; } @@ -3005,10 +3005,10 @@ static int cm_rej_handler(struct cm_work *work) } /* fall through */ default: - spin_unlock_irq(&cm_id_priv->lock); pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n", __func__, be32_to_cpu(cm_id_priv->id.local_id), cm_id_priv->id.state); + spin_unlock_irq(&cm_id_priv->lock); ret = -EINVAL; goto out; } |