Patch "brcmfmac: change driver unbind order of the sdio function devices" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

brcmfmac: change driver unbind order of the sdio function devices

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
brcmfmac-change-driver-unbind-order-of-the-sdio-function-devices.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Arend Van Spriel <[email protected]>
Date: Sat, 25 Nov 2017 21:39:25 +0100
Subject: brcmfmac: change driver unbind order of the sdio function devices

From: Arend Van Spriel <[email protected]>

commit 5c3de777bdaf48bd0cfb43097c0d0fb85056cab7 upstream.

In the function brcmf_sdio_firmware_callback() the driver is unbound from the sdio function devices in the error path. However, the order in which it is done resulted in a use-after-free issue (see brcmf_ops_sdio_remove() in bcmsdh.c). Hence change the order and first unbind sdio function #2 device and then unbind sdio function #1 device.

---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -4080,8 +4080,8 @@ release:
 	sdio_release_host(sdiodev->func[1]);
 fail:
 	brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), err);
-	device_release_driver(dev);
 	device_release_driver(&sdiodev->func[2]->dev);
+	device_release_driver(dev);
 }
 
 struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/brcmfmac-change-driver-unbind-order-of-the-sdio-function-devices.patch