linux-kernel - Re: [syzbot] [usb?] WARNING in usbnet_start_xmit/usb_submit

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Message-ID: <20250218162931.958387-1-n.zhandarovich@fintech.ru>
Date: Tue, 18 Feb 2025 19:29:29 +0300
From: Nikita Zhandarovich <n.zhandarovich@...tech.ru>
To: <syzbot+d693c07c6f647e0388d3@...kaller.appspotmail.com>
CC: Nikita Zhandarovich <n.zhandarovich@...tech.ru>,
	<syzkaller-bugs@...glegroups.com>, <linux-kernel@...r.kernel.org>
Subject: Re: [syzbot] [usb?] WARNING in usbnet_start_xmit/usb_submit_urb (2)

Do basic endpoint verification via usbnet utilities in gl620a driver.

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
---
 drivers/net/usb/gl620a.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/usb/gl620a.c b/drivers/net/usb/gl620a.c
index 46af78caf457..0bfa37c14059 100644
--- a/drivers/net/usb/gl620a.c
+++ b/drivers/net/usb/gl620a.c
@@ -179,9 +179,7 @@ static int genelink_bind(struct usbnet *dev, struct usb_interface *intf)
 {
 	dev->hard_mtu = GL_RCV_BUF_SIZE;
 	dev->net->hard_header_len += 4;
-	dev->in = usb_rcvbulkpipe(dev->udev, dev->driver_info->in);
-	dev->out = usb_sndbulkpipe(dev->udev, dev->driver_info->out);
-	return 0;
+	return usbnet_get_endpoints(dev, intf);
 }
 
 static const struct driver_info	genelink_info = {