linux-kernel - Re: 答复: [PATCH v1] usb: gadget: u_serial: check Null pointer in EP callback

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Message-ID: <2024081652-unify-unlucky-28d2@gregkh>
Date: Fri, 16 Aug 2024 16:42:25 +0200
From: "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
To: 胡连勤 <hulianqin@...o.com>
Cc: Michael Nazzareno Trimarchi <michael@...rulasolutions.com>,
	"quic_prashk@...cinc.com" <quic_prashk@...cinc.com>,
	"quic_jjohnson@...cinc.com" <quic_jjohnson@...cinc.com>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"opensource.kernel" <opensource.kernel@...o.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
Subject: Re: 答复: [PATCH v1] usb: gadget:
 u_serial: check Null pointer in EP callback

On Fri, Aug 16, 2024 at 02:19:58PM +0000, 胡连勤 wrote:
> Hello linux community expert:
> 
> > > Q: Are you running a mainline kernel?
> > > A: Yes.
> >
> > You should reply without top posting (refer to [1]). I'm trying to be helpful to you but it's not easy. The question was if your on some 6.10.y or older version of the kernel, the step to reproduce it, and if you have any automation to test it
>   The kernel version that has the problem is 5.15.

Which specific 5.15 kernel?  The latest one or some random
Android-provided 5.15 kernel?

Does this also show up on 6.11-rc3?

>   To reproduce, turn on the combination mode of the mobile phone USB, such as adb+diag+serial_tty+rmnet_ipa+serial_cdev when running the monkey test.

What is "monkey test"?

I think this has been reported previously, and different patches have
been proposed, have you searched the archives?

Specifically, take a look at:
	https://lore.kernel.org/r/20240116141801.396398-1-khtsai@google.com

thanks,

greg k-h