Patch "usb: dwc2: host: Fix dereference issue in DDMA completion flow." has been added to the 5.4-stable tree

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

    usb: dwc2: host: Fix dereference issue in DDMA completion flow.

to the 5.4-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:
     usb-dwc2-host-fix-dereference-issue-in-ddma-completion-flow.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From eed04fa96c48790c1cce73c8a248e9d460b088f8 Mon Sep 17 00:00:00 2001
From: Minas Harutyunyan <Minas.Harutyunyan@xxxxxxxxxxxx>
Date: Tue, 9 Apr 2024 12:27:54 +0000
Subject: usb: dwc2: host: Fix dereference issue in DDMA completion flow.

From: Minas Harutyunyan <Minas.Harutyunyan@xxxxxxxxxxxx>

commit eed04fa96c48790c1cce73c8a248e9d460b088f8 upstream.

Fixed variable dereference issue in DDMA completion flow.

Fixes: b258e4268850 ("usb: dwc2: host: Fix ISOC flow in DDMA mode")
CC: stable@xxxxxxxxxxxxxxx
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Closes: https://lore.kernel.org/linux-usb/2024040834-ethically-rumble-701f@gregkh/T/#m4c4b83bef0ebb4b67fe2e0a7d6466cbb6f416e39
Signed-off-by: Minas Harutyunyan <Minas.Harutyunyan@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/cc826d3ef53c934d8e6d98870f17f3cdc3d2755d.1712665387.git.Minas.Harutyunyan@xxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/usb/dwc2/hcd_ddma.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/usb/dwc2/hcd_ddma.c
+++ b/drivers/usb/dwc2/hcd_ddma.c
@@ -897,13 +897,15 @@ static int dwc2_cmpl_host_isoc_dma_desc(
 	struct dwc2_dma_desc *dma_desc;
 	struct dwc2_hcd_iso_packet_desc *frame_desc;
 	u16 frame_desc_idx;
-	struct urb *usb_urb = qtd->urb->priv;
+	struct urb *usb_urb;
 	u16 remain = 0;
 	int rc = 0;
 
 	if (!qtd->urb)
 		return -EINVAL;
 
+	usb_urb = qtd->urb->priv;
+
 	dma_sync_single_for_cpu(hsotg->dev, qh->desc_list_dma + (idx *
 				sizeof(struct dwc2_dma_desc)),
 				sizeof(struct dwc2_dma_desc),


Patches currently in stable-queue which might be from Minas.Harutyunyan@xxxxxxxxxxxx are

queue-5.4/usb-dwc2-host-fix-dereference-issue-in-ddma-completion-flow.patch




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