Hi Heikki, On 2/9/22 16:42, Heikki Krogerus wrote:
On Tue, Feb 08, 2022 at 02:37:10AM -0800, syzbot wrote:syzbot has bisected this issue to: commit 8c67d06f3fd9639c44d8147483fb1c132d71388f Author: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> Date: Thu Dec 23 08:23:49 2021 +0000 usb: Link the ports to the connectors they are attached to bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14063168700000 start commit: 555f3d7be91a Merge tag '5.17-rc3-ksmbd-server-fixes' of gi.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=16063168700000 console output: https://syzkaller.appspot.com/x/log.txt?x=12063168700000 kernel config: https://syzkaller.appspot.com/x/.config?x=266de9da75c71a45 dashboard link: https://syzkaller.appspot.com/bug?extid=60df062e1c41940cae0f syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15880d84700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14de0c77b00000 Reported-by: syzbot+60df062e1c41940cae0f@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 8c67d06f3fd9 ("usb: Link the ports to the connectors they are attached to") For information about bisection process see: https://goo.gl/tpsmEJ#bisectionI'm guessing the component_add() is failing in this case. So I guess we need to consider the component_add() failures fatal in drivers/usb/core/port.c, which is a bit of a bummer. I'll send the fix.
Seems something similar to your approach is already posted https://lore.kernel.org/linux-usb/20220208170048.24718-1-fmdefrancesco@xxxxxxxxx/ With regards, Pavel Skripkin
