patch "staging: gigaset: fix illegal free on probe errors" added to staging-linus

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

staging: gigaset: fix illegal free on probe errors

to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 84f60ca7b326ed8c08582417493982fe2573a9ad Mon Sep 17 00:00:00 2001
From: Johan Hovold <[email protected]>
Date: Mon, 2 Dec 2019 09:56:09 +0100
Subject: staging: gigaset: fix illegal free on probe errors

The driver failed to initialise its receive-buffer pointer, something which could lead to an illegal free on late probe errors.

Fix this by making sure to clear all driver data at allocation.

---
 drivers/staging/isdn/gigaset/usb-gigaset.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

index 5e393e7dde45..a84722d83bc6 100644
@@ -571,8 +571,7 @@ static int gigaset_initcshw(struct cardstate *cs)
 {
 	struct usb_cardstate *ucs;
 
-	cs->hw.usb = ucs =
-		kmalloc(sizeof(struct usb_cardstate), GFP_KERNEL);
+	cs->hw.usb = ucs = kzalloc(sizeof(struct usb_cardstate), GFP_KERNEL);
 	if (!ucs) {
 		pr_err("out of memory\n");
 		return -ENOMEM;

@@ -584,9 +583,6 @@ static int gigaset_initcshw(struct cardstate *cs)
 	ucs->bchars[3] = 0;
 	ucs->bchars[4] = 0x11;
 	ucs->bchars[5] = 0x13;
-	ucs->bulk_out_buffer = NULL;
-	ucs->bulk_out_urb = NULL;
-	ucs->read_urb = NULL;
 	tasklet_init(&cs->write_tasklet,
 		     gigaset_modem_fill, (unsigned long) cs);
 

2.24.0