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([2001:b07:6468:f312:9af8:e5f5:7516:fa89]) by smtp.googlemail.com with ESMTPSA id jl11-20020a17090775cb00b006fe98fb9523sm6178108ejc.129.2022.05.25.06.49.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 25 May 2022 06:49:46 -0700 (PDT) Message-ID: <9c56b296-f51e-d290-df35-85bc4254cd0f@redhat.com> Date: Wed, 25 May 2022 15:49:45 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: Problem running qos-test when building with gcc12 and LTO Content-Language: en-US To: Dario Faggioli , "qemu-devel@nongnu.org" Cc: Claudio Fontana , "alex.bennee@linaro.org" References: <1d3bbff9e92e7c8a24db9e140dcf3f428c2df103.camel@suse.com> <24c61f36e23339cb1ab80b41e906ea60a0d67d2a.camel@suse.com> From: Paolo Bonzini In-Reply-To: <24c61f36e23339cb1ab80b41e906ea60a0d67d2a.camel@suse.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2a00:1450:4864:20::636; envelope-from=paolo.bonzini@gmail.com; helo=mail-ej1-x636.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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" On 5/24/22 22:12, Dario Faggioli wrote: > Ok, apparently, v6.2.0 works (with GCC 12 and LTO), while as said > v7.0.0 doesn't. > > Therefore, I run a bisect, and it pointed at: > > 8dcb404bff6d9147765d7dd3e9c8493372186420 > tests/qtest: enable more vhost-user tests by default > > I've also confirmed that on v7.0.0 with 8dcb404bff6d914 reverted, the > test actually works. > > As far as downstream packaging is concerned, I'll revert it locally. > But I'd be happy to help figuring our what is actually going wrong. > > I'll try to dig further. Any idea/suggestion anyone has, feel free.:-) Does valgrind point out anything suspicious? Paolo