From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 35BDC191473; Fri, 16 Aug 2024 14:42:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723819349; cv=none; b=AAfu1eQVFiUHSdolHQvM3tTwC82I7oOJOHUINHLsd4ajklTMygWUGpYcS4IwnVKIcY1WzzmvKsbFEAEJLNwgWbUvQVXRfOEZ4YJxVwoddzGgnjESJ8xmpboBMNf7vyLqF5obfzmu4kCMtSfHGU8JnG0zriz1M/VrZKCCIaXL7S8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723819349; c=relaxed/simple; bh=TUkHIeV/zlALbVKyJ8dfPXvj/ynLTnBJxD/KkydGsiM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ky4UDCC0yOhpv6ufh2LqkGP0K6XrV/ymwlQBMKJPXVxXIO/ETu+JEHaE/yzOeoUCllioG1vI/SPIItuuVdWlIOKankFlLUjV467tdhZf16/f+S2rovmnwzGhqIi2hzpl7hMlmpbI0EuRFx97R6HZkgjw2xvBBuKPFQYngR+zkmU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Ub1ECHTV; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Ub1ECHTV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2B5EBC32782; Fri, 16 Aug 2024 14:42:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1723819348; bh=TUkHIeV/zlALbVKyJ8dfPXvj/ynLTnBJxD/KkydGsiM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Ub1ECHTVJPwH5CHDKddEBDLHWge4FSmO+DNDuXu4cDl6phW2UV+w3LLNRBhVuGLSV NDA9WFJ0/JRyHcZGI/i6pjVexIdIFKWrfusGPVAgdGRrvs1QouYWppZkaH8dyXaAEM 5+3rWKewrTm8hoH6K1juN3Fmz3hH22YpT8noU/jQ= Date: Fri, 16 Aug 2024 16:42:25 +0200 From: "gregkh@linuxfoundation.org" To: =?utf-8?B?6IOh6L+e5Yuk?= Cc: Michael Nazzareno Trimarchi , "quic_prashk@quicinc.com" , "quic_jjohnson@quicinc.com" , "linux-usb@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "opensource.kernel" , "akpm@linux-foundation.org" Subject: Re: =?utf-8?B?562U5aSNOiBbUEFUQw==?= =?utf-8?Q?H?= v1] usb: gadget: u_serial: check Null pointer in EP callback Message-ID: <2024081652-unify-unlucky-28d2@gregkh> References: <2024081608-punch-coherent-d29e@gregkh> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: 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