From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qk1-f181.google.com (mail-qk1-f181.google.com [209.85.222.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C8B0E111A1 for ; Wed, 17 May 2023 16:27:53 +0000 (UTC) Received: by mail-qk1-f181.google.com with SMTP id af79cd13be357-74e4f839ae4so59869885a.0 for ; Wed, 17 May 2023 09:27:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1684340873; x=1686932873; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=gKP3y2yRA1niickBAZNGt652pVuj+gN+BwTUxLrXHNQ=; b=x6IZmmBCbPWXYEV1s7cwpW+6JSUPvlKX/pEzz5bkryXn1zZebfylT4DUapS4sia6Bm 593nM5GeWZJyZU3elQthsjSQjaLVUhiT1xATIBTlx6rJyiWe0BccHZKUZGy7Z49VVOLd ULfJnBAe1kcFUWU2OIxI2oQBL0av3WUv1TcT/EojkwXeF6gWCYxGzmC+msS0zdE7h2c6 fFxl6SEEE9bf4C/2eLRqperK6PFAMdAo5Anph13Y+2ohfRM3KPQVKxLEiepYwlcZclQY Kbs6f6WlYEPs0MMgn7IKu31Wd88GMhBytneV3IfZ4EFpknd5ojk0j/bgaMZ1fWbTt4V/ rOkA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684340873; x=1686932873; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gKP3y2yRA1niickBAZNGt652pVuj+gN+BwTUxLrXHNQ=; b=GrlO5ghGr1wI7uEVJKccONC+kksLUZEgP2wII6gOe6asZLM/j6voPSQbqrh74f2sb/ s0Y5P88H0am8fupe214h5iqzae9qptv+B+mZOcshVA59+usG2du18v0rHqVqODcMjTr+ 0UMtfVX3QNUZaqv/K8VyYNZRxaSxbpaLRJHQk2qcmjn//iSCO5PGJMC6TL6GzIqQQ/4c Uw1YdyTvwStYWDc1KZDC88oY9z+J33RgZV+KbczOYoi/xOvFG7tQmoUG8pYh2MGoyrau T6WlVjuCJzOtSxJ0fdUmTmH2ohkrehFK3UkV7BoxCTwI7Pj9ktLGzsxu6KzRYypBStym lUuQ== X-Gm-Message-State: AC+VfDwAn2I6JIvhnOjBz+DcY5cYMdV7fhwk785GAQSRjJFAJpAHHwRx HB+nE3oLFhMFTzV4LC3YzGZ0twzjoFfjMyttFcd6Wi3v8HUqN5dAx0/R/A== X-Google-Smtp-Source: ACHHUZ5i7gqrt52vlZ8Nnb/F0kMFD8QMC/x9Q5gQRUQ0nTJlG6e6Y29/q9q1G0M5KBatPnK9A2vJ9E/t/pXyL0yzlQ8= X-Received: by 2002:ad4:5dc4:0:b0:61a:c2bf:9f0b with SMTP id m4-20020ad45dc4000000b0061ac2bf9f0bmr658197qvh.6.1684340872605; Wed, 17 May 2023 09:27:52 -0700 (PDT) Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20220919170828.3718437-1-ndesaulniers@google.com> <597ef55f-e7c1-ab60-b4aa-0071ff4b5e0e@collabora.com> <89961dfc-d40f-78e4-5d34-b86b7d152182@collabora.com> <17c91d37-7d9c-0df4-2438-2b30ca0b5777@collabora.com> In-Reply-To: From: Nick Desaulniers Date: Wed, 17 May 2023 09:27:41 -0700 Message-ID: Subject: Re: [PATCH v4] Makefile.compiler: replace cc-ifversion with compiler-specific macros To: =?UTF-8?Q?Ricardo_Ca=C3=B1uelo?= Cc: Shreeya Patel , Michal Marek , Masahiro Yamada , Linux Kernel Mailing List , clang-built-linux , Bill Wendling , Nathan Chancellor , regressions@lists.linux.dev, "gustavo.padovan@collabora.com" , Guillaume Charles Tucker , denys.f@collabora.com, kernelci@lists.linux.dev Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, May 17, 2023 at 8:39=E2=80=AFAM Ricardo Ca=C3=B1uelo wrote: > > Hi Nick, > > On 16/5/23 1:01, Nick Desaulniers wrote: > > Can you please help verify this failure by hand, and see if applying > > https://github.com/ClangBuiltLinux/linux/commit/45c4fb6095d872785e07794= 2da896d65d87ab56b.patch > > helps? If you can repro; mind sharing your precise steps to reproduce? > > I ran a few tests but the commit that introduced your changes > passes every time. There's a chance that the bisector got misled > due to the test runs failing for whatever reason unrelated to the > patch. There's definitely something introducing a bug somewhere, > as current mainline/master makes this test fail on this target > when kernel/configs/debug.config is applied, but it must be > somewhere else. I'll investigate this some more to see what I can > find. Thanks for verifying/reporting. > > About the steps to reproduce it, we're using the current KernelCI > tools (kci_build) to generate the kernel. To actually launch the > tests I'm submitting jobs to Collabora's LAVA lab, which is > something that isn't available to external users, so it might be > a bit hard for you to reproduce the exact environment from the > original test. If you need to test something, I can do it for > you. Shreeya mentioned upthread that `qemu_arm-virt-gicv3-uefi` was failing, so I assume others should be able to repro in qemu. I'd guess that LAVA lets you have VMs adjacent to physical hardware. Having the qemu command line, kernel config, and perhaps the initramfs are going to be the three most useful things for any similar bug report. --=20 Thanks, ~Nick Desaulniers