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[209.132.180.67]) by mx.google.com with ESMTP id g2si5950332plg.336.2019.06.29.15.57.16; Sat, 29 Jun 2019 15:58:01 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=L00cjy6P; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726965AbfF2W4x (ORCPT + 99 others); Sat, 29 Jun 2019 18:56:53 -0400 Received: from mail-wr1-f65.google.com ([209.85.221.65]:35573 "EHLO mail-wr1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726935AbfF2W4x (ORCPT ); Sat, 29 Jun 2019 18:56:53 -0400 Received: by mail-wr1-f65.google.com with SMTP id c27so2150359wrb.2; Sat, 29 Jun 2019 15:56:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:mime-version:message-id:in-reply-to :references:user-agent:content-transfer-encoding; bh=qUedtJ5SZ+27TWH7owaYfng0Kwqx/x4UxotqXgxYYyY=; b=L00cjy6P7ujKCFjPNiNUGSRTGzeTEpmRlQAkL5c+pmAQuToj52Im9ZWCPjDRVg9YWG eOTnEzHGAh5++1ir0mm9PdcDQ+0iyG1cOcRp6urb5o8ZfNEKf9lIu9ghw57KuyYJsgr2 r9X/L6O3Nno5cBn88+e4QU8K/QD8feAt1VimhSqX3j4MMEKlr2gMXt6ypo3rP5jjjZSl tv88ADELXHdhLz805ltRQ9iq28vzXhi0J72tF11c6mbFIuOSG0IFyqkXWqGmOjPVADej whiZ0/50MZZxCG9XtV2I5fy5WAANi7XlMCBoB5sZGU5nhtr7Iy+3qeQ6qmqiaOcOG8dp V99g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:mime-version:message-id :in-reply-to:references:user-agent:content-transfer-encoding; bh=qUedtJ5SZ+27TWH7owaYfng0Kwqx/x4UxotqXgxYYyY=; b=UmD6u3CflRbYtXw4eVCOQgcQyp9OnrXlbjUeSMZIfBfgR7dps76nOEExYWsPf6+lLj dgYIY/+dLTvQ560aEgk5DEEYPmuq4vGTvKT2drZ18qOK+bx5oG3rKSofOj1dH2DmPmfT BkoYqNbVeGm6St+oZ5ZlIKx0IcHrhdzbsrXJ32JZeL9WyZaHk4tJt+FpottCwadGOzDH oArXmOcuNQ7csi9IXhq3/HI2gYzpQcUszxNKNgSLNkNelk1YYAZAIO3/jNoufVf6AlZ9 67y3qqkK4Gs0D4uxeTFA1Tnw5/P21cMoZ9XKba3589b3KcnYvP+Fex9bVexcvdi/l/xB yiVA== X-Gm-Message-State: APjAAAVKCdwJPwoQ4nQTMCWR82e7AkTYYI0n08ESoBsSy6KLGNlmIFk8 TiE7kk/I98Ttd6K+A8ryUf7pKBSN3gz3Tg== X-Received: by 2002:adf:fecd:: with SMTP id q13mr13432778wrs.97.1561849007278; Sat, 29 Jun 2019 15:56:47 -0700 (PDT) Received: from localhost ([92.59.185.54]) by smtp.gmail.com with ESMTPSA id z6sm5531618wrw.2.2019.06.29.15.56.45 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Sat, 29 Jun 2019 15:56:46 -0700 (PDT) From: Vicente Bergas To: Will Deacon Cc: Will Deacon , Al Viro , , , Catalin Marinas , Subject: Re: =?iso-8859-1?Q?d=5Flookup:_Unable_to_handle_kernel_paging_request?= Date: Sun, 30 Jun 2019 00:56:44 +0200 MIME-Version: 1.0 Message-ID: <914ad7ec-36ca-4ac0-87d0-e7016515baa3@gmail.com> In-Reply-To: References: <20190522162945.GN17978@ZenIV.linux.org.uk> <10192e43-c21d-44e4-915d-bf77a50c22c4@gmail.com> <20190618183548.GB17978@ZenIV.linux.org.uk> <20190619162802.GF17978@ZenIV.linux.org.uk> <20190619170940.GG17978@ZenIV.linux.org.uk> <20190624114741.i542cb3wbhfbk4q4@willie-the-truck> <20190625094602.GC13263@fuggles.cambridge.arm.com> User-Agent: Trojita Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday, June 25, 2019 12:48:17 PM CEST, Vicente Bergas wrote: > On Tuesday, June 25, 2019 11:46:02 AM CEST, Will Deacon wrote: >> [+Marc] >>=20 >> Hi again, Vicente, >>=20 >> On Mon, Jun 24, 2019 at 12:47:41PM +0100, Will Deacon wrote: ... > > Hi Will, > the memtest test is still pending... Hi Will, i've just ran that memtest and no issues have been found. See below. I've also noticed that this is running very early, hence the 'earlycon'. Because of this i wondered if it was run with interrupts disabled, and indeed this is the case, am i wrong? If the kernel before kexec is corrupting memory for the currently running kernel, which entry point does it have, besides interrupts? Or can the corruption come through DMA from a peripheral? > Has kexec ever worked reliably on this board? Yes, more or less. I have experienced some issues that could be caused because of this, like sometimes on-screen flickering or failing to boot once every 20 or 30 tries. But recently this d_lookup issue appeared and it is a show-stopper. This way of booting is used on both the sapphire board and on kevin. The bootloader is https://gitlab.com/vicencb/kevinboot (not up to date) and a similar one for the sapphire board. Regards, Vicen=C3=A7. Booting Linux on physical CPU 0x0000000000 [0x410fd034] Linux version 5.2.0-rc6 (local@host) (gcc version 8.3.0 (GCC)) #1 SMP @0 Machine model: Sapphire-RK3399 Board earlycon: uart0 at MMIO32 0x00000000ff1a0000 (options '1500000n8') printk: bootconsole [uart0] enabled early_memtest: # of tests: 17 0x0000000000200000 - 0x0000000000280000 pattern 4c494e5558726c7a 0x0000000000b62000 - 0x0000000000b65000 pattern 4c494e5558726c7a 0x0000000000b7665f - 0x00000000f77e8a58 pattern 4c494e5558726c7a 0x00000000f77e8a87 - 0x00000000f77e8a88 pattern 4c494e5558726c7a 0x00000000f77e8ab7 - 0x00000000f77e8ab8 pattern 4c494e5558726c7a 0x00000000f77e8ae7 - 0x00000000f77e8ae8 pattern 4c494e5558726c7a 0x00000000f77e8b17 - 0x00000000f77e8b18 pattern 4c494e5558726c7a 0x00000000f77e8b47 - 0x00000000f77e8b48 pattern 4c494e5558726c7a 0x00000000f77e8b74 - 0x00000000f77e8b78 pattern 4c494e5558726c7a 0x00000000f77e8ba4 - 0x00000000f77e8ba8 pattern 4c494e5558726c7a 0x00000000f77e8bd4 - 0x00000000f77e8bd8 pattern 4c494e5558726c7a 0x00000000f77e8c04 - 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0x00000000f77e8c08 pattern 0000000000000000 0x00000000f77e8c34 - 0x00000000f77e8c38 pattern 0000000000000000 0x00000000f77e8c64 - 0x00000000f77e8c68 pattern 0000000000000000 0x00000000f77e8c94 - 0x00000000f77e8c98 pattern 0000000000000000 0x00000000f77e8cc4 - 0x00000000f77e8cc8 pattern 0000000000000000 0x00000000f77e8cf4 - 0x00000000f77e8cf8 pattern 0000000000000000 0x00000000f77e8d29 - 0x00000000f77e8d30 pattern 0000000000000000 On node 0 totalpages: 1015296 DMA32 zone: 15864 pages used for memmap DMA32 zone: 0 pages reserved DMA32 zone: 1015296 pages, LIFO batch:63 psci: probing for conduit method from DT. psci: PSCIv1.1 detected in firmware. psci: Using standard PSCI v0.2 function IDs psci: MIGRATE_INFO_TYPE not supported. psci: SMC Calling Convention v1.1 percpu: Embedded 20 pages/cpu s50200 r0 d31720 u81920 pcpu-alloc: s50200 r0 d31720 u81920 alloc=3D20*4096 pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 [0] 4 [0] 5=20 Detected VIPT I-cache on CPU0 CPU features: detected: GIC system register CPU interface Speculative Store Bypass Disable mitigation not required Built 1 zonelists, mobility grouping on. Total pages: 999432 Kernel command line: rw root=3D/dev/sda2 rootwait console=3Dtty0=20 console=3DttyS2,1500000n8 earlycon memtest=3D17 Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes) Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes) Memory: 3971436K/4061184K available (6078K kernel code, 430K rwdata, 1460K=20= rodata, 640K init, 407K bss, 89748K reserved, 0K cma-reserved) random: get_random_u64 called from cache_random_seq_create+0x50/0x118 with=20= crng_init=3D0 SLUB: HWalign=3D64, Order=3D0-3, MinObjects=3D0, CPUs=3D6, Nodes=3D1 rcu: Hierarchical RCU implementation. rcu: =09RCU restricting CPUs from NR_CPUS=3D8 to nr_cpu_ids=3D6. rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies. rcu: Adjusting geometry for rcu_fanout_leaf=3D16, nr_cpu_ids=3D6 NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0 GICv3: GIC: Using split EOI/Deactivate mode GICv3: Distributor has no Range Selector support GICv3: no VLPI support, no direct LPI support GICv3: CPU0: found redistributor 0 region 0:0x00000000fef00000 ITS [mem 0xfee20000-0xfee3ffff] ITS@0x00000000fee20000: allocated 65536 Devices @f2400000 (flat, esz 8, psz=20= 64K, shr 0) ITS: using cache flushing for cmd queue GICv3: using LPI property table @0x0000000000240000 GIC: using cache flushing for LPI property table GICv3: CPU0: using allocated LPI pending table @0x0000000000250000 GICv3: GIC: PPI partition interrupt-partition-0[0] { /cpus/cpu@0[0]=20 /cpus/cpu@1[1] /cpus/cpu@2[2] /cpus/cpu@3[3] } GICv3: GIC: PPI partition interrupt-partition-1[1] { /cpus/cpu@100[4]=20 /cpus/cpu@101[5] } rockchip_mmc_get_phase: invalid clk rate rockchip_mmc_get_phase: invalid clk rate rockchip_mmc_get_phase: invalid clk rate rockchip_mmc_get_phase: invalid clk rate arch_timer: cp15 timer(s) running at 24.00MHz (phys). clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles:=20 0x588fe9dc0, max_idle_ns: 440795202592 ns sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns Console: colour dummy device 240x67 printk: console [tty0] enabled Calibrating delay loop (skipped), value calculated using timer frequency..=20= 48.00 BogoMIPS (lpj=3D96000) pid_max: default: 32768 minimum: 301 Mount-cache hash table entries: 8192 (order: 4, 65536 bytes) Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes) *** VALIDATE proc *** *** VALIDATE cgroup1 *** *** VALIDATE cgroup2 *** ASID allocator initialised with 32768 entries rcu: Hierarchical SRCU implementation. Platform MSI: interrupt-controller@fee20000 domain created smp: Bringing up secondary CPUs ... Detected VIPT I-cache on CPU1 GICv3: CPU1: found redistributor 1 region 0:0x00000000fef20000 GICv3: CPU1: using allocated LPI pending table @0x0000000000260000 CPU1: Booted secondary processor 0x0000000001 [0x410fd034] Detected VIPT I-cache on CPU2 GICv3: CPU2: found redistributor 2 region 0:0x00000000fef40000 GICv3: CPU2: using allocated LPI pending table @0x0000000000270000 CPU2: Booted secondary processor 0x0000000002 [0x410fd034] Detected VIPT I-cache on CPU3 GICv3: CPU3: found redistributor 3 region 0:0x00000000fef60000 GICv3: CPU3: using allocated LPI pending table @0x00000000f2480000 CPU3: Booted secondary processor 0x0000000003 [0x410fd034] CPU features: detected: EL2 vector hardening Detected PIPT I-cache on CPU4 GICv3: CPU4: found redistributor 100 region 0:0x00000000fef80000 GICv3: CPU4: using allocated LPI pending table @0x00000000f2490000 CPU4: Booted secondary processor 0x0000000100 [0x410fd082] Detected PIPT I-cache on CPU5 GICv3: CPU5: found redistributor 101 region 0:0x00000000fefa0000 GICv3: CPU5: using allocated LPI pending table @0x00000000f24a0000 CPU5: Booted secondary processor 0x0000000101 [0x410fd082] smp: Brought up 1 node, 6 CPUs SMP: Total of 6 processors activated. CPU features: detected: 32-bit EL0 Support CPU features: detected: CRC32 instructions CPU: All CPU(s) started at EL2 alternatives: patching kernel code devtmpfs: initialized clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns:=20= 7645041785100000 ns futex hash table entries: 2048 (order: 5, 131072 bytes) pinctrl core: initialized pinctrl subsystem NET: Registered protocol family 16 hw-breakpoint: found 6 breakpoint and 4 watchpoint registers. DMA: preallocated 256 KiB pool for atomic allocations > Regarding interrupts, the kernel before kexec has this parameter: > irqchip.gicv3_nolpi=3D1 > Thanks to Marc: > https://freenode.irclog.whitequark.org/linux-rockchip/2018-11-20#23524255 > > The kernel messages are here: > https://paste.debian.net/1089170/ > https://paste.debian.net/1089171/ > > Regards, > Vicen=C3=A7.