[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20200504165459.974554129@linuxfoundation.org>
Date: Mon, 4 May 2020 19:57:46 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
"Matthew Wilcox (Oracle)" <willy@...radead.org>,
Jason Gunthorpe <jgg@...lanox.com>
Subject: [PATCH 5.4 42/57] RDMA/cm: Fix an error check in cm_alloc_id_priv()
From: Dan Carpenter <dan.carpenter@...cle.com>
commit 983653515849fb56b78ce55d349bb384d43030f6 upstream.
The xa_alloc_cyclic_irq() function returns either 0 or 1 on success and
negatives on error. This code treats 1 as an error and returns ERR_PTR(1)
which will cause an Oops in the caller.
Fixes: ae78ff3a0f0c ("RDMA/cm: Convert local_id_table to XArray")
Link: https://lore.kernel.org/r/20200407093714.GA80285@mwanda
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@...radead.org>
Signed-off-by: Jason Gunthorpe <jgg@...lanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/infiniband/core/cm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -873,7 +873,7 @@ struct ib_cm_id *ib_create_cm_id(struct
ret = xa_alloc_cyclic_irq(&cm.local_id_table, &id, NULL, xa_limit_32b,
&cm.local_id_next, GFP_KERNEL);
- if (ret)
+ if (ret < 0)
goto error;
cm_id_priv->id.local_id = (__force __be32)id ^ cm.random_id_operand;
xa_store_irq(&cm.local_id_table, cm_local_id(cm_id_priv->id.local_id),
Powered by blists - more mailing lists