From: Andrey Konovalov <andreyknvl@google.com>
To: Bastien Nocera <hadess@hadess.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alan Stern <stern@rowland.harvard.edu>
Cc: syzkaller <syzkaller@googlegroups.com>,
USB list <linux-usb@vger.kernel.org>,
Dmitry Vyukov <dvyukov@google.com>
Subject: USB driver ID matching broken
Date: Wed, 16 Sep 2020 15:33:25 +0200 [thread overview]
Message-ID: <CAAeHK+zOrHnxjRFs=OE8T=O9208B9HP_oo8RZpyVOZ9AJ54pAA@mail.gmail.com> (raw)
Hi Bastien, Greg, Alan,
Looks like commit adb6e6ac20ee ("USB: Also match device drivers using
the ->match vfunc") broke the USB driver ID matching process. This, in
turn, led to a complete breakage of the USB fuzzing instance.
This is how an attempt to connect a USB device looks now:
[ 39.781642][ T12] usb 1-1: new high-speed USB device number 2
using dummy_hcd
[ 40.299955][ T12] usb 1-1: New USB device found, idVendor=0cf3,
idProduct=9271, bcdDevice= 1.08
[ 40.303072][ T12] usb 1-1: New USB device strings: Mfr=1,
Product=2, SerialNumber=3
[ 40.305678][ T12] usb 1-1: Product: syz
[ 40.307041][ T12] usb 1-1: Manufacturer: syz
[ 40.308556][ T12] usb 1-1: SerialNumber: syz
[ 40.314825][ T12] usbip-host 1-1: 1-1 is not in match_busid table... skip!
[ 42.500114][ T51] usb 1-1: USB disconnect, device number 2
It seems that when going through the list of registered IDs the code
tries to match against USB/IP and succeeds as usbip_match() always
returns true.
I'm not sure what's the best fix for this is.
Thanks!
next reply other threads:[~2020-09-16 17:59 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-16 13:33 Andrey Konovalov [this message]
2020-09-16 14:15 ` USB driver ID matching broken Greg Kroah-Hartman
2020-09-16 14:39 ` Bastien Nocera
2020-09-16 15:58 ` M. Vefa Bicakci
2020-09-17 9:59 ` [PATCH 1/2] usbcore/driver: Fix specific driver selection M. Vefa Bicakci
2020-09-17 9:59 ` [PATCH 2/2] usbip: Make the driver's match function specific M. Vefa Bicakci
2020-09-17 10:23 ` [PATCH 1/2] usbcore/driver: Fix specific driver selection Bastien Nocera
2020-09-17 10:39 ` M. Vefa Bicakci
2020-09-17 10:49 ` Bastien Nocera
2020-09-17 14:41 ` [PATCH 1/3] " M. Vefa Bicakci
2020-09-17 14:41 ` [PATCH 2/3] usbcore/driver: Fix incorrect downcast M. Vefa Bicakci
2020-09-17 15:01 ` Alan Stern
2020-09-18 9:26 ` M. Vefa Bicakci
2020-09-17 14:41 ` [PATCH 3/3] usbip: Make the driver's match function specific M. Vefa Bicakci
2020-09-17 15:21 ` Shuah Khan
2020-09-18 9:26 ` M. Vefa Bicakci
2020-09-18 14:31 ` M. Vefa Bicakci
2020-09-18 15:49 ` Shuah Khan
2020-09-19 13:54 ` M. Vefa Bicakci
2020-09-21 17:03 ` M. Vefa Bicakci
2020-09-18 14:31 ` [PATCH 1/3] usbcore/driver: Fix specific driver selection M. Vefa Bicakci
2020-09-18 14:52 ` Alan Stern
2020-09-19 13:52 ` M. Vefa Bicakci
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