linux-kernel - Re: A null-ptr crash in linux-6.4 usb driver

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Message-ID: <b60e7642b76b464ca4acddcba5329a3d@qianxin.com>
Date:   Tue, 31 Oct 2023 11:10:45 +0000
From:   柳菁峰 <liujingfeng@...nxin.com>
To:     Marco Elver <elver@...gle.com>
CC:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "rafael@...nel.org" <rafael@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "security@...nel.org" <security@...nel.org>,
        "secalert@...hat.com" <secalert@...hat.com>,
        "syzkaller@...glegroups.com" <syzkaller@...glegroups.com>
Subject: Re: A null-ptr crash in linux-6.4 usb driver

OK, I took a look and it may be the same reason that caused the crash,but I just tested it on the latest Linux-6.6,it also crashed while running the reproducer,it didn't be fixed.

> Looks like this report from over a year ago:
> https://lore.kernel.org/all/000000000000bb7f1c05da29b601@google.com/

It seems that this issue will not be fixed because it must rely on fault-inject, right?
I am not familiar with this part of the kernel code, and if fixing this issue is very difficult, I may not be able to provide an useful patch,sorry.

> Great, please submit a patch to resolve this and we will be glad to review it.