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
