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[109.43.178.74]) by smtp.gmail.com with ESMTPSA id s188-20020ae9dec5000000b006fcb77f3bd6sm2311115qkf.98.2023.04.04.08.18.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 04 Apr 2023 08:18:20 -0700 (PDT) Message-ID: Date: Tue, 4 Apr 2023 17:18:15 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.13.0 Subject: Re: s390x TCG migration failure Content-Language: en-US From: Thomas Huth To: qemu-devel@nongnu.org, Juan Quintela , Nina Schoetterl-Glausch Cc: qemu-block@nongnu.org, Stefan Berger , Stefan Hajnoczi , Halil Pasic , John Snow , David Hildenbrand , "Daniel P . Berrange" , Laurent Vivier , qemu-s390x@nongnu.org, Christian Borntraeger , =?UTF-8?Q?Marc-Andr=c3=a9_Lureau?= , "Michael S. Tsirkin" , =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , "Dr. David Alan Gilbert" , Marcel Apfelbaum , Coiby Xu , Ilya Leoshkevich , Eduardo Habkost , Yanan Wang , Richard Henderson , Markus Armbruster , Paolo Bonzini , Alex Williamson , Eric Blake , Eric Farman References: <20230207005650.1810-4-quintela@redhat.com> <20230324184129.3119575-1-nsg@linux.ibm.com> <84eebff9-54b8-9354-5b48-822937af0405@redhat.com> <07464c8f08535b5c6611135ffeda66c8b26ec46c.camel@linux.ibm.com> <88923929-1a75-2dbd-d7d9-406d620c71e7@redhat.com> In-Reply-To: <88923929-1a75-2dbd-d7d9-406d620c71e7@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.133.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -39 X-Spam_score: -4.0 X-Spam_bar: ---- X-Spam_report: (-4.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-1.925, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 29/03/2023 08.36, Thomas Huth wrote: > On 29/03/2023 00.21, Nina Schoetterl-Glausch wrote: >> On Tue, 2023-03-28 at 15:01 +0200, Thomas Huth wrote: >>> On 24/03/2023 19.41, Nina Schoetterl-Glausch wrote: >>>> Hi, >>>> >>>> We're seeing failures running s390x migration kvm-unit-tests tests with >>>> TCG. >>>> Some initial findings: >>>> What seems to be happening is that after migration a control block >>>> header accessed by the test code is all zeros which causes an unexpected >>>> exception. >>>> I did a bisection which points to c8df4a7aef ("migration: Split >>>> save_live_pending() into state_pending_*") as the culprit. >>>> The migration issue persists after applying the fix e264705012 >>>> ("migration: I messed state_pending_exact/estimate") on top of c8df4a7aef. >>> >>>    Hi Nina, >>> >>> could you please open a ticket in the QEMU bug tracker and add the "8.0" >>> label there, so that it correctly shows up in the list of things that should >>> be fixed before the 8.0 release? >> >> https://gitlab.com/qemu-project/qemu/-/issues/1565 > > Thanks! Ping! Juan, did you have a chance to look at this issue yet? ... we're getting quite close to the 8.0 release, and IMHO this sounds like a critical bug? Thomas