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Tue, 10 Nov 2020 04:25:15 -0500 Received: from mail-lf1-x144.google.com (mail-lf1-x144.google.com [IPv6:2a00:1450:4864:20::144]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A55DC0613D1 for ; Tue, 10 Nov 2020 01:25:14 -0800 (PST) Received: by mail-lf1-x144.google.com with SMTP id f11so10245669lfs.3 for ; Tue, 10 Nov 2020 01:25:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=oB1EvD98yGtMgMToaF8cXp5dTfWo4uYoDDWzcDmuaYE=; b=kDp1flA35/wPceVcIHZ+CLVWPG2dcSPmNW1LiWWhELdiO7MyZTWIM0qh7DvPEZ1+aT CCW4r3tAUb8GnjeSiQGhkGJodAxumwRLo2uQpCGEVmAYWfeORTU+2aVyiMyL88v97lOw jisScqc6bBKJM/N8uLUVoPdqwp/4cISGLcxSTRszqZNpT8FobkZAIp/Boht7k+Lk4CH4 5jQ3DaNlLQyXlZECUO5v2xxuwCxWdSkGV00myqfKz9jKN+mkRRaFWCYLJsYSR4b6R4AC CVt4xsk6o3oLSVdqf2x7D6fQseFNYM4ZE4FtSBXs8fzO16FasoNhZYtdlnpQkqC4f6nj ZH3Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=oB1EvD98yGtMgMToaF8cXp5dTfWo4uYoDDWzcDmuaYE=; b=EOTyf5knQmq4398KsiB8+G9jK2plXdBVh58kN5fzw1tj3rMzQTEuMZS+ygDx3oMDPZ McUhIcr/GFKdUFKUWQOGEAxqRSLUlsb2ZaXp1xRL1gVbsK1eTbC5v5prdEjR2ZBx3+ir 60wFv6iplpj2SSHEUgQvh/Mve5+ebbAs0+/sfCx4hnINNGFDmm0bap6WLZ5xRIlcSH4I 50c/tJ9eYhgZ6XBIj96eJ8iFyVTCfPekHmXQQiqpLAChgW3QVLGisVf+D71YGQANBXy+ b714cwF7X0MjzmlD5DekZKfU5UNlT57iiKmhwKfBCykpwxs54L5wgEM6bM6u9Jlp9a7e iO6A== X-Gm-Message-State: AOAM531NfbAC8sKvyBo+emjvhVv2jc0Sn0e76gVNtqyjAG+HYmswx+dk UMOGpAAtltsijHH/+ql7a4zauDM0POqCNdZYiJNWww== X-Google-Smtp-Source: ABdhPJx0U5KC4evBwOS95rEMUCnTL8BYxxni8KZawPPzGycie/xhfizMQjKA+JlZRRZasAnICaTX0VUe4N51HxngBdM= X-Received: by 2002:a19:fc03:: with SMTP id a3mr5555841lfi.472.1605000312794; Tue, 10 Nov 2020 01:25:12 -0800 (PST) MIME-Version: 1.0 References: <20201105170604.6588a06e@canb.auug.org.au> In-Reply-To: From: Anders Roxell Date: Tue, 10 Nov 2020 10:25:02 +0100 Message-ID: Subject: Re: linux-next: Tree for Nov 5 To: Dmitry Vyukov Cc: Stephen Rothwell , Alexander Potapenko , Marco Elver , Andrew Morton , Jann Horn , Linux Next Mailing List , Linux Kernel Mailing List Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On Tue, 10 Nov 2020 at 10:17, Dmitry Vyukov wrote: > > On Tue, Nov 10, 2020 at 8:50 AM Anders Roxell wrote: > > > > On Thu, 5 Nov 2020 at 07:06, Stephen Rothwell wrote: > > > > > > Hi all, > > > > > > Changes since 20201104: > > > > When building an arm64 allmodconfig and booting up that in qemu I see > > > > [10011.092394][ T28] task:kworker/0:2 state:D stack:26896 pid: > > 1840 ppid: 2 flags:0x00000428 > > [10022.368093][ T28] Workqueue: events toggle_allocation_gate > > [10024.827549][ T28] Call trace: > > [10027.152494][ T28] __switch_to+0x1cc/0x1e0 > > [10031.378073][ T28] __schedule+0x730/0x800 > > [10032.164468][ T28] schedule+0xd8/0x160 > > [10033.886807][ T28] toggle_allocation_gate+0x16c/0x220 > > [10038.477987][ T28] process_one_work+0x5c0/0x980 > > [10039.900075][ T28] worker_thread+0x428/0x720 > > [10042.782911][ T28] kthread+0x23c/0x260 > > [10043.171725][ T28] ret_from_fork+0x10/0x18 > > [10046.227741][ T28] INFO: lockdep is turned off. > > [10047.732220][ T28] Kernel panic - not syncing: hung_task: blocked tasks > > [10047.741785][ T28] CPU: 0 PID: 28 Comm: khungtaskd Tainted: G > > W 5.10.0-rc2-next-20201105-00006-g7af110e4d8ed #1 > > [10047.755348][ T28] Hardware name: linux,dummy-virt (DT) > > [10047.763476][ T28] Call trace: > > [10047.769802][ T28] dump_backtrace+0x0/0x420 > > [10047.777104][ T28] show_stack+0x38/0xa0 > > [10047.784177][ T28] dump_stack+0x1d4/0x278 > > [10047.791362][ T28] panic+0x304/0x5d8 > > [10047.798202][ T28] check_hung_uninterruptible_tasks+0x5e4/0x640 > > [10047.807056][ T28] watchdog+0x138/0x160 > > [10047.814140][ T28] kthread+0x23c/0x260 > > [10047.821130][ T28] ret_from_fork+0x10/0x18 > > [10047.829181][ T28] Kernel Offset: disabled > > [10047.836274][ T28] CPU features: 0x0240002,20002004 > > [10047.844070][ T28] Memory Limit: none > > [10047.853599][ T28] ---[ end Kernel panic - not syncing: hung_task: > > blocked tasks ]--- > > > > if I build with KFENCE=n it boots up eventually, here's my .config file [2]. > > > > Any idea what may happen? > > > > it happens on next-20201109 also, but it takes longer until we get the > > "Call trace:". > > > > Cheers, > > Anders > > [1] http://ix.io/2Ddv > > [2] https://people.linaro.org/~anders.roxell/allmodconfig-next-20201105.config > > Hi Anders, Hi Dmitry, > > Does it happen during boot or afterwards? During boot, since it runs a lot of boot selftests. > 10047 are seconds after boot, right? No > So this is like 3 hours after boot, no? This is a boot log where I actually get to the boot prompt. https://people.linaro.org/~anders.roxell/output-next-20201109-nokfence.log > Also, is there anything useful before that part of the log? oh I missed to say that this is the full boot log with the kernel panic http://ix.io/2Ddv Cheers, Anders