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Fri, 02 Jan 2026 16:53:10 -0800 (PST) Date: Fri, 02 Jan 2026 16:53:10 -0800 In-Reply-To: <692ccc4c.a70a0220.d98e3.0175.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69586876.050a0220.1c9965.0006.GAE@google.com> Subject: Forwarded: Re: [syzbot] [input?] [usb?] WARNING in cm109_urb_irq_callback From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: Re: [syzbot] [input?] [usb?] WARNING in cm109_urb_irq_callback Author: yiconghui@gmail.com #syz test:=20 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master --- a/drivers/input/misc/cm109.c +++ b/drivers/input/misc/cm109.c @@ -375,13 +375,17 @@ static void cm109_submit_ctl(struct cm109_dev *dev) =C2=A0=C2=A0=C2=A0=C2=A0 dev->ctl_data->byte[HID_OR2] =3D dev->keybit; =C2=A0=C2=A0=C2=A0=C2=A0 dev->buzzer_pending =3D 0; -=C2=A0=C2=A0=C2=A0 dev->ctl_urb_pending =3D 1; -=C2=A0=C2=A0=C2=A0 error =3D usb_submit_urb(dev->urb_ctl, GFP_ATOMIC); -=C2=A0=C2=A0=C2=A0 if (error) -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 dev_err(&dev->intf->dev, -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 "%s: us= b_submit_urb (urb_ctl) failed %d\n", -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 __func_= _, error); +=C2=A0=C2=A0=C2=A0 if (!dev->ctl_urb_pending) { +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 dev->ctl_urb_pending =3D 1; + + +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 error =3D usb_submit_urb(dev->u= rb_ctl, GFP_ATOMIC); +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (error) +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 dev_err= (&dev->intf->dev, +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0 "%s: usb_submit_urb (urb_ctl) failed %d\n", +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0 __func__, error); +=C2=A0=C2=A0=C2=A0 } =C2=A0} =C2=A0/* --=20