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From: Dan Carpenter <dan.carpenter@oracle.com>
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] firmware: arm_scmi: Use after free in scmi_create_protocol_device()
Date: Fri, 27 Apr 2018 14:06:49 +0000	[thread overview]
Message-ID: <20180427140649.GD19583@mwanda> (raw)

We need to return here instead of setting up the freed sdev device as a
transport.

Fixes: 907b6d14911d ("firmware: arm_scmi: add per-protocol channels support using idr objects")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 14b147135a0c..2455be8cbc4f 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -778,6 +778,7 @@ scmi_create_protocol_device(struct device_node *np, struct scmi_info *info,
 	if (scmi_mbox_chan_setup(info, &sdev->dev, prot_id)) {
 		dev_err(&sdev->dev, "failed to setup transport\n");
 		scmi_device_destroy(sdev);
+		return;
 	}
 
 	/* setup handle now as the transport is ready */

WARNING: multiple messages have this Message-ID (diff)
From: dan.carpenter@oracle.com (Dan Carpenter)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] firmware: arm_scmi: Use after free in scmi_create_protocol_device()
Date: Fri, 27 Apr 2018 17:06:49 +0300	[thread overview]
Message-ID: <20180427140649.GD19583@mwanda> (raw)

We need to return here instead of setting up the freed sdev device as a
transport.

Fixes: 907b6d14911d ("firmware: arm_scmi: add per-protocol channels support using idr objects")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 14b147135a0c..2455be8cbc4f 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -778,6 +778,7 @@ scmi_create_protocol_device(struct device_node *np, struct scmi_info *info,
 	if (scmi_mbox_chan_setup(info, &sdev->dev, prot_id)) {
 		dev_err(&sdev->dev, "failed to setup transport\n");
 		scmi_device_destroy(sdev);
+		return;
 	}
 
 	/* setup handle now as the transport is ready */

             reply	other threads:[~2018-04-27 14:06 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-27 14:06 Dan Carpenter [this message]
2018-04-27 14:06 ` [PATCH] firmware: arm_scmi: Use after free in scmi_create_protocol_device() Dan Carpenter
2018-04-27 14:47 ` Sudeep Holla
2018-04-27 14:47   ` Sudeep Holla

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