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infiniband/qedr: Potential null ptr dereference of qp 

idr_find() may fail and return a NULL pointer. The fix checks the return
value of the function and returns an error in case of NULL.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Acked-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Aditya Pakki 2018-12-24 12:24:45 -06:00 committed by Jason Gunthorpe
parent 94edd87a1c
commit 9c6260de50
1 changed files with 2 additions and 0 deletions
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2
drivers/infiniband/hw/qedr/qedr_iw_cm.c
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@ -492,6 +492,8 @@ int qedr_iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
int i;
qp = idr_find(&dev->qpidr.idr, conn_param->qpn);
if (unlikely(!qp))
return -EINVAL;
laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;