linux-kernel - Re: [syzbot] [media?] [usb?] WARNING in imon

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Message-ID: <kwwrx7p4nfr4qkv5xxpo5nidyyjdbytsulpu7lj6yujmzrnxb6@q63vtmlo3dqa>
Date:   Tue, 26 Sep 2023 12:52:19 -0300
From:   "Ricardo B. Marliere" <ricardo@...liere.net>
To:     syzbot <syzbot+1c41b2e045dc086f58be@...kaller.appspotmail.com>
Cc:     linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-usb@...r.kernel.org, mchehab@...nel.org, sean@...s.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [media?] [usb?] WARNING in imon_probe

> If you want syzbot to run the reproducer, reply with:
> #syz test: git://repo/address.git branch-or-commit-hash
#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git a48fa7efaf1161c1c898931fe4c7f0070964233a

diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c
index 74546f7e3469..5719dda6e0f0 100644
--- a/drivers/media/rc/imon.c
+++ b/drivers/media/rc/imon.c
@@ -2427,6 +2427,12 @@ static int imon_probe(struct usb_interface *interface,
 		goto fail;
 	}

+	if (first_if->dev.driver != interface->dev.driver) {
+		dev_err(&interface->dev, "inconsistent driver matching\n");
+		ret = -EINVAL;
+		goto fail;
+	}
+
 	if (ifnum == 0) {
 		ictx = imon_init_intf0(interface, id);
 		if (!ictx) {