From: Steve Wise <swise@opengridcomputing.com>
Date: Tue, 5 Sep 2017 11:52:34 -0700
Subject: iw_cxgb4: remove the stid on listen create failure
Patch-mainline: v4.14-rc2
Git-commit: 8b1bbf36b7452c4acb20e91948eaa5e225ea6978
References: bsc#1046543 FATE#322927
If a listen create fails, then the server tid (stid) is incorrectly left
in the stid idr table, which can cause a touch-after-free if the stid
is looked up and the already freed endpoint is touched. So make sure
and remove it in the error path.
Cc: stable@vger.kernel.org
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/cxgb4/cm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -3462,7 +3462,7 @@ int c4iw_create_listen(struct iw_cm_id *
cm_id->provider_data = ep;
goto out;
}
-
+ remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid);
cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
ep->com.local_addr.ss_family);
fail2: