From: Aditya Pakki <pakki001@umn.edu>
Date: Mon, 24 Dec 2018 12:24:45 -0600
Subject: infiniband/qedr: Potential null ptr dereference of qp
Patch-mainline: v5.0-rc1
Git-commit: 9c6260de505b63638dd86fcc33849b17f6146d94
References: bsc#1136456 jsc#SLE-4689
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/qedr/qedr_iw_cm.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/infiniband/hw/qedr/qedr_iw_cm.c
+++ b/drivers/infiniband/hw/qedr/qedr_iw_cm.c
@@ -492,6 +492,8 @@ int qedr_iw_connect(struct iw_cm_id *cm_
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;