linux-kernel - Re: [PATCH v5] ath9k: verify the expected usb

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Date:   Tue, 11 Oct 2022 04:44:13 +0000 (UTC)
From:   Kalle Valo <kvalo@...nel.org>
To:     Fedor Pchelkin <pchelkin@...ras.ru>
Cc:     Toke Høiland-Jørgensen <toke@...e.dk>,
        Fedor Pchelkin <pchelkin@...ras.ru>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Alexey Khoroshilov <khoroshilov@...ras.ru>,
        lvc-project@...uxtesting.org,
        Johannes Berg <johannes@...solutions.net>,
        Alan Stern <stern@...land.harvard.edu>
Subject: Re: [PATCH v5] ath9k: verify the expected usb_endpoints are present

Fedor Pchelkin <pchelkin@...ras.ru> wrote:

> The bug arises when a USB device claims to be an ATH9K but doesn't
> have the expected endpoints. (In this case there was an interrupt
> endpoint where the driver expected a bulk endpoint.) The kernel
> needs to be able to handle such devices without getting an internal error.
> 
> usb 1-1: BOGUS urb xfer, pipe 3 != type 1
> WARNING: CPU: 3 PID: 500 at drivers/usb/core/urb.c:493 usb_submit_urb+0xce2/0x1430 drivers/usb/core/urb.c:493
> Modules linked in:
> CPU: 3 PID: 500 Comm: kworker/3:2 Not tainted 5.10.135-syzkaller #0
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
> Workqueue: events request_firmware_work_func
> RIP: 0010:usb_submit_urb+0xce2/0x1430 drivers/usb/core/urb.c:493
> Call Trace:
>  ath9k_hif_usb_alloc_rx_urbs drivers/net/wireless/ath/ath9k/hif_usb.c:908 [inline]
>  ath9k_hif_usb_alloc_urbs+0x75e/0x1010 drivers/net/wireless/ath/ath9k/hif_usb.c:1019
>  ath9k_hif_usb_dev_init drivers/net/wireless/ath/ath9k/hif_usb.c:1109 [inline]
>  ath9k_hif_usb_firmware_cb+0x142/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1242
>  request_firmware_work_func+0x12e/0x240 drivers/base/firmware_loader/main.c:1097
>  process_one_work+0x9af/0x1600 kernel/workqueue.c:2279
>  worker_thread+0x61d/0x12f0 kernel/workqueue.c:2425
>  kthread+0x3b4/0x4a0 kernel/kthread.c:313
>  ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:299
> 
> Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
> 
> Suggested-by: Alan Stern <stern@...land.harvard.edu>
> Signed-off-by: Fedor Pchelkin <pchelkin@...ras.ru>
> Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
> Acked-by: Toke Høiland-Jørgensen <toke@...e.dk>
> Signed-off-by: Kalle Valo <quic_kvalo@...cinc.com>

Patch applied to ath-next branch of ath.git, thanks.

16ef02bad239 wifi: ath9k: verify the expected usb_endpoints are present

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20221008211532.74583-1-pchelkin@ispras.ru/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches