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[93.72.151.96]) by smtp.googlemail.com with ESMTPSA id m1sm2775805lfh.99.2020.09.28.01.59.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 28 Sep 2020 01:59:52 -0700 (PDT) Subject: Re: clang build buggy code with certain CPUTYPE setting To: Marek Zarychta , Dimitry Andric Cc: freebsd-current@freebsd.org References: <20200926114045.GA31128@plan-b.pwste.edu.pl> <6AA016B6-EEAC-4580-B7F0-9D274ADA9E73@FreeBSD.org> <20200926195533.GA16596@plan-b.pwste.edu.pl> From: Andriy Gapon Openpgp: preference=signencrypt Autocrypt: addr=avg@FreeBSD.org; prefer-encrypt=mutual; keydata= mDMEX1iFDhYJKwYBBAHaRw8BAQdAiu8JG/oLFkVkOAJqJc7Dx5KI/Q6C3SBI20EQm+DXnAu0 HkFuZHJpeSBHYXBvbiA8YXZnQEZyZWVCU0Qub3JnPoiWBBMWCAA+FiEEyCHHZM09l0OE3Ir/ 1A1+Gq8+L1EFAl9YhQ4CGwMFCQeEzgAFCwkIBwIGFQoJCAsCBBYCAwECHgECF4AACgkQ1A1+ Gq8+L1Fc0wD/ZjmhHfbCJywZU3aOxXIPjcz73FYEGMvqMCCLAWyLbSABALFL+1ZNrjV3BGjq 889cOYFuboA/Yn3eWezS+tfqYBsGuDgEX1iFDhIKKwYBBAGXVQEFAQEHQL6B20Xi600TrkpG P9fWjl7JtHNxqrHKhX6Kg7kgb4ILAwEIB4h+BBgWCAAmFiEEyCHHZM09l0OE3Ir/1A1+Gq8+ L1EFAl9YhQ4CGwwFCQeEzgAACgkQ1A1+Gq8+L1F3cgEAktp4h+IJUJxL1vn6zMOt//znni/J TanKfQuA8wGXcGkBAKpZJhqMkg+pKk7MGvJhgJ6nCpTZ+rMK6vZVZLUWc3QF Message-ID: Date: Mon, 28 Sep 2020 11:59:51 +0300 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Firefox/60.0 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20200926195533.GA16596@plan-b.pwste.edu.pl> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4C0GgJ0lx1z45Fb X-Spamd-Bar: -- X-Spamd-Result: default: False [-2.09 / 15.00]; ARC_NA(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+ip4:209.85.128.0/17:c]; MID_RHS_MATCH_FROM(0.00)[]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[FreeBSD.org]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-0.97)[-0.970]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_HAM_SHORT(-0.17)[-0.166]; RCVD_IN_DNSWL_NONE(0.00)[209.85.208.172:from]; NEURAL_HAM_MEDIUM(-0.95)[-0.952]; FORGED_SENDER(0.30)[avg@FreeBSD.org,agapon@gmail.com]; RWL_MAILSPIKE_POSSIBLE(0.00)[209.85.208.172:from]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:15169, ipnet:209.85.128.0/17, country:US]; FROM_NEQ_ENVFROM(0.00)[avg@FreeBSD.org,agapon@gmail.com]; MAILMAN_DEST(0.00)[freebsd-current]; RECEIVED_SPAMHAUS_PBL(0.00)[93.72.151.96:received] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Sep 2020 08:59:57 -0000 On 26/09/2020 22:55, Marek Zarychta wrote: > Thank you for the information and for the fix. Sadly I must admit it > doesn't work for me. I have tried two builds with fresh sources today to > be certain and it looks like the bug is still present on FreeBSD > 13-CURRENT r366186. Either the upstream fixed it only partially or it is > another bug. As a workaround, I will build worlds without > CPUTYPE?=amdfam10 for a while. I hope the problem will be resolved > before clang 11 is MFCed to 12-STABLE. Can you disassemble the faulting instruction in the core dump? Can you provide full CPU ID / features information from dmesg? -- Andriy Gapon