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[193.165.148.130]) by smtp.googlemail.com with ESMTPSA id m13sm1425056wrs.87.2019.05.15.02.44.50 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 15 May 2019 02:44:50 -0700 (PDT) From: "StarostaCZ@gmail.com" X-Google-Original-From: "StarostaCZ@gmail.com" Subject: Re: Linux crash when using FTDI FT232R USB to serial converter on AMD boards. To: Oliver Neukum , Joerg Roedel , Johan Hovold References: <04503197-a0a9-8b35-6c65-c10f296aab57@gmail.com> <20190429094847.GI26546@localhost> <20190503153716.GE11605@8bytes.org> <8748125e-f360-ff0e-ea15-699bce9e7747@gmail.com> <4e7f0267-eba8-81c3-4036-25924ea9df98@gmail.com> <1557911856.2950.10.camel@suse.com> Message-ID: <3e7ec2f2-ac47-a031-96ba-fa2b9f21ed2e@gmail.com> Date: Wed, 15 May 2019 11:43:18 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <1557911856.2950.10.camel@suse.com> Content-Language: cs Cc: iommu@lists.linux-foundation.org, linux-usb@vger.kernel.org, Mathias Nyman X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============8023961234861033211==" Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org --===============8023961234861033211== Content-Type: text/html; charset=utf-8 Content-Language: cs Content-Transfer-Encoding: 7bit As I wrote, I made new test on kernel Linux version 5.1.0-050100-generic amd64:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.1/
Same problem, system crash after a few seconds. Full kern.log: https://paste.ee/p/EmLsw

Unfortunately, I can't judge if the patch is there, but I found, that this patch was added to kernel 5.0.2:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/iommu/amd_iommu.c?id=4e50ce03976fbc8ae995a000c4b10c737467beaa
Can I somehow verify that the patch is in this ubuntu kernel 5.1.0? 
starosta
Dne 15.5.2019 v 11:17 Oliver Neukum napsal(a):
On Mi, 2019-05-15 at 09:54 +0200,  StarostaCZ@gmail.com  wrote:

Hello,
can I still help with this problem? It's very important for us. Thank you.

Your first step would be t verify whether your kernel has the
fix coming in the patch Joerg mentioned.

	Regards
		Oliver

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