From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DE9DC433C1 for ; Thu, 25 Mar 2021 09:46:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BEF7E61A1E for ; Thu, 25 Mar 2021 09:46:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229934AbhCYJqN (ORCPT ); Thu, 25 Mar 2021 05:46:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:42398 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229989AbhCYJp7 (ORCPT ); Thu, 25 Mar 2021 05:45:59 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E4E0A61A0A; Thu, 25 Mar 2021 09:45:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1616665559; bh=imUwwKjBBe26NsLwnuU65gnbTUinglj7MTUsG0EZlcw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=n7mbVLtb6lR46mcWi3gJj/ypMZkcTWanN7wlfniujiTDNY4k0gI9tftU14Nw6ETjw t0YXsmvBbDwV6dN39YYpL3kPjJP5EGyHHZC8QdCtkGMWlCYMfl12BDUNRrhOKa+qO9 21UaTlSh6RXmCESoogicaaC0960vO1PZrXrodlt+d+YvW4561kVH++FEyuWYzeKETB 7U0e2qdOMSz/PB/eVvLFjwyUgCRI2wwvJiYvXQqJKD5rJIEkBDD3HflQBJm/Ljo5mH YoOVWFl8Z/KIQqYj/6jIHcIKBCW55F6WyRmCBdCa3BSurolmMkWEw4ss/XvJSs5nHk SrwU1dj6gY4tg== Date: Thu, 25 Mar 2021 11:45:53 +0200 From: Mike Rapoport To: Finn Thain Cc: linux-m68k@lists.linux-m68k.org, Stan Johnson Subject: Re: v5.11 (CONFIG_FLATMEM) boot crash Message-ID: References: <25bd53c4-8d29-5457-13a4-2e34011d796@telegraphics.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <25bd53c4-8d29-5457-13a4-2e34011d796@telegraphics.com.au> Precedence: bulk List-ID: X-Mailing-List: linux-m68k@vger.kernel.org On Thu, Mar 25, 2021 at 02:03:25PM +1100, Finn Thain wrote: > Hi All, > > Stan has sent me a series of logs from v5.10 and v5.11 showing a > regression apparently caused by the deprecation of CONFIG_DISCONTIGMEM. > > This v5.11 kernel build has CONFIG_FLATMEM=y and > CONFIG_FORCE_MAX_ZONEORDER=11 which is now the default. The 5.10 build has > CONFIG_DISCONTIGMEM=y. > > This system is a Mac IIci, which has two RAM banks. Bank A has physical > address 0 and bank B has 0x04000000. This model often has two > discontiguous RAM chunks. However, installing 64 MB in bank A does avoid > that. > > There is a bootloader issue in play here. The bootloader (Penguin) prefers > to locate the kernel and initrd in the largest bank. Hence it may fail to > choose the lowest bank even when that bank is sufficiently large. When > that happens, Linux is unable to use the RAM in bank A. > > Linux has always complained about this situation but now it crashes. This > seems to be a regression in v5.11. Can anyone help debug this? There was a bug in the definition of ARCH_PFN_OFFSET that's quite probably causes the crashes when the kernel is located in the second memory bank. The fix was posted a while ago: https://lore.kernel.org/linux-m68k/20210228190828.392974-1-angelo@kernel-space.org Can you check if this helps? > These are some of the configurations Stan has tested (figures in MB): > > Bank A Bank B v5.10 memory v5.11 memory > ----------------------------------------------- > 1 16 16 crash (log below) > 16 1 17 17 (log below) > 16 64 64 crash > 64 16 80 80 > > ABCFGHIJK > [ 0.000000] Linux version 5.11.0-mac (fthain@nippy) (m68k-linux-gnu-gcc (btc) 6.4.0, GNU ld (btc) 2.28) #1 Tue Mar 16 16:56:05 AEDT 2021 > [ 0.000000] Saving 414 bytes of bootinfo > [ 0.000000] printk: bootconsole [debug0] enabled > [ 0.000000] Detected Macintosh model: 11 > [ 0.000000] Apple Macintosh IIci > [ 0.000000] Ignoring memory chunk at 0x0:0x100000 before the first chunk > [ 0.000000] Fix your bootloader or use a memfile to make use of this area! > [ 0.000000] Zone ranges: > [ 0.000000] DMA [mem 0x0000000004000000-0x0000004fffffffff] > [ 0.000000] Normal empty > [ 0.000000] Movable zone start for each node > [ 0.000000] Early memory node ranges > [ 0.000000] node 0: [mem 0x0000000004000000-0x0000000004ffffff] > [ 0.000000] Initmem setup node 0 [mem 0x0000000004000000-0x0000000004ffffff] > [ 0.000000] Data write fault at 0x7057c000 in Super Data (pc=0x225f12) > [ 0.000000] BAD KERNEL BUSERR > [ 0.000000] Oops: 00000000 > [ 0.000000] Modules linked in: > [ 0.000000] PC: [<00225f12>] memset+0x6a/0x9c > [ 0.000000] SR: 2714 SP: (ptrval) a2: 00485500 > [ 0.000000] d0: 00000000 d1: 00000024 d2: 00000001 d3: 0000ffff > [ 0.000000] d4: 00005000 d5: 004ad0a0 a0: 7057c000 a1: 7057c004 > [ 0.000000] Process swapper (pid: 0, task=(ptrval)) > [ 0.000000] Frame format=A ssw=070d isc=ffee isb=4242 daddr=7057c000 dobuf=00000000 > [ 0.000000] Stack from 00483de4: > [ 0.000000] 00004000 00004000 00483e28 004e14c0 7057c000 00000000 00000024 00005000 > [ 0.000000] 00004000 00000000 00483e78 00483e74 000ad4f6 004e250c 00483e70 004e13a4 > [ 0.000000] 00005000 00483e7c 004e15ba 00001000 00000000 00000000 00004000 00005000 > [ 0.000000] 00000000 00000000 00000001 00001000 00000000 00004000 00000000 00000fdc > [ 0.000000] 003a9ef6 003b7be8 004abe54 00004000 00005000 00000000 00483ee4 004d33e2 > [ 0.000000] 00001000 00000000 00000000 00004000 00483f58 003a9ef6 00483f44 00000014 > [ 0.000000] Call Trace: [<00004000>] hardware_proc_show+0x4c/0x9e > [ 0.000000] [<00004000>] hardware_proc_show+0x4c/0x9e > [ 0.000000] [<004e14c0>] memmap_init_zone+0x11c/0x188 > [ 0.000000] [<00005000>] do_notify_resume+0x482/0x60a > [ 0.000000] [<00004000>] hardware_proc_show+0x4c/0x9e > [ 0.000000] [<000ad4f6>] zone_batchsize+0x0/0x5a > [ 0.000000] [<004e250c>] __next_mem_pfn_range+0x0/0x82 > [ 0.000000] [<004e13a4>] memmap_init_zone+0x0/0x188 > [ 0.000000] [<00005000>] do_notify_resume+0x482/0x60a > [ 0.000000] [<004e15ba>] memmap_init+0x8e/0xae > [ 0.000000] [<00001000>] kernel_pg_dir+0x0/0x1000 > [ 0.000000] [<00004000>] hardware_proc_show+0x4c/0x9e > [ 0.000000] [<00005000>] do_notify_resume+0x482/0x60a > [ 0.000000] [<00001000>] kernel_pg_dir+0x0/0x1000 > [ 0.000000] [<00004000>] hardware_proc_show+0x4c/0x9e > [ 0.000000] [<003a9ef6>] printk+0x0/0x16 > [ 0.000000] [<00004000>] hardware_proc_show+0x4c/0x9e > [ 0.000000] [<00005000>] do_notify_resume+0x482/0x60a > [ 0.000000] [<004d33e2>] free_area_init_node+0x426/0x444 > [ 0.000000] [<00001000>] kernel_pg_dir+0x0/0x1000 > [ 0.000000] [<00004000>] hardware_proc_show+0x4c/0x9e > [ 0.000000] [<003a9ef6>] printk+0x0/0x16 > [ 0.000000] [<004d2fbc>] free_area_init_node+0x0/0x444 > [ 0.000000] [<004d3962>] free_area_init+0x466/0x492 > [ 0.000000] [<00001000>] kernel_pg_dir+0x0/0x1000 > [ 0.000000] [<00001000>] kernel_pg_dir+0x0/0x1000 > [ 0.000000] [<00004000>] hardware_proc_show+0x4c/0x9e > [ 0.000000] [<00005000>] do_notify_resume+0x482/0x60a > [ 0.000000] [<004d397a>] free_area_init+0x47e/0x492 > [ 0.000000] [<004cced0>] kernel_page_table+0x0/0x84 > [ 0.000000] [<00001000>] kernel_pg_dir+0x0/0x1000 > [ 0.000000] [<000012fc>] kernel_pg_dir+0x2fc/0x1000 > [ 0.000000] [<00001000>] kernel_pg_dir+0x0/0x1000 > [ 0.000000] [<00001000>] kernel_pg_dir+0x0/0x1000 > [ 0.000000] [<00004000>] hardware_proc_show+0x4c/0x9e > [ 0.000000] [<00005000>] do_notify_resume+0x482/0x60a > [ 0.000000] [<00004000>] hardware_proc_show+0x4c/0x9e > [ 0.000000] [<00005000>] do_notify_resume+0x482/0x60a > [ 0.000000] [<004cd40c>] paging_init+0x416/0x422 > [ 0.000000] [<0021e0ea>] strlcpy+0x0/0x6c > [ 0.000000] [<004cc916>] setup_arch+0x62/0x1f0 > [ 0.000000] [<004cd79a>] mac_parse_bootinfo+0x0/0xee > [ 0.000000] [<003a9ef6>] printk+0x0/0x16 > [ 0.000000] [<004cca44>] setup_arch+0x190/0x1f0 > [ 0.000000] [<003a9ef6>] printk+0x0/0x16 > [ 0.000000] [<004ca41e>] start_kernel+0x50/0x486 > [ 0.000000] [<004c9410>] _sinittext+0x410/0xadc > [ 0.000000] > [ 0.000000] Code: 22c0 22c0 22c0 22c0 22c0 22c0 22c0 22c0 <51ca> ffee 4242 5382 6ae6 0801 0001 6704 3280 5489 0801 0000 6702 1280 2008 241f > [ 0.000000] Disabling lock debugging due to kernel taint > [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task! > [ 0.000000] ---[ end Kernel panic - not syncing: Attempted to kill the idle task! ]--- > > ABCFGHIJK > [ 0.000000] Linux version 5.11.0-mac (fthain@nippy) (m68k-linux-gnu-gcc (btc) 6.4.0, GNU ld (btc) 2.28) #1 Tue Mar 16 16:56:05 AEDT 2021 > [ 0.000000] Saving 414 bytes of bootinfo > [ 0.000000] printk: bootconsole [debug0] enabled > [ 0.000000] Detected Macintosh model: 11 > [ 0.000000] Apple Macintosh IIci > [ 0.000000] Zone ranges: > [ 0.000000] DMA [mem 0x0000000000000000-0x00000040ffffffff] > [ 0.000000] Normal empty > [ 0.000000] Movable zone start for each node > [ 0.000000] Early memory node ranges > [ 0.000000] node 0: [mem 0x0000000000000000-0x0000000000ffffff] > [ 0.000000] node 0: [mem 0x0000000004000000-0x00000000040fffff] > [ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x00000000040fffff] > [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 4205 > [ 0.000000] Kernel command line: ro init=/start.sh root=/dev/sda5 console=tty0 console=ttyS0 earlyprintk > [ 0.000000] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes, linear) > [ 0.000000] Inode-cache hash table entries: 2048 (order: 1, 8192 bytes, linear) > [ 0.000000] Sorting __ex_table... > [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off > [ 0.000000] Memory: 12128K/17408K available (3777K kernel code, 284K rwdata, 820K rodata, 128K init, 111K bss, 5280K reserved, 0K cma-reserved) > [ 0.000000] SLUB: HWalign=16, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 > [ 0.000000] NR_IRQS: 72 > [ 0.000000] clocksource: via1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 2439823894983 ns > [ 0.020000] Console: colour dummy device 80x25 > [ 0.080000] printk: console [tty0] enabled > [ 0.090000] printk: console [ttyS0] enabled > [ 0.090000] printk: console [ttyS0] enabled > [ 0.100000] printk: bootconsole [debug0] disabled > [ 0.100000] printk: bootconsole [debug0] disabled > [ 0.110000] Calibrating delay loop... 5.83 BogoMIPS (lpj=29184) > [ 0.260000] pid_max: default: 32768 minimum: 301 > [ 0.290000] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear) > [ 0.300000] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear) > [ 0.420000] devtmpfs: initialized > [ 0.530000] random: get_random_u32 called from bucket_table_alloc.isra.27+0x70/0x1a6 with crng_init=0 > [ 0.580000] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns > [ 0.590000] futex hash table entries: 256 (order: -1, 3072 bytes, linear) > [ 0.630000] NET: Registered protocol family 16 > [ 0.670000] DMA: preallocated 128 KiB GFP_KERNEL pool for atomic allocations > [ 0.690000] DMA: preallocated 128 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations > [ 1.360000] NuBus: Scanning NuBus slots. > [ 1.550000] SCSI subsystem initialized > [ 1.630000] clocksource: Switched to clocksource via1 > [ 2.370000] NET: Registered protocol family 2 > [ 2.440000] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes, linear) > [ 2.450000] TCP established hash table entries: 1024 (order: 0, 4096 bytes, linear) > [ 2.460000] TCP bind hash table entries: 1024 (order: 0, 4096 bytes, linear) > [ 2.480000] TCP: Hash tables configured (established 1024 bind 1024) > [ 2.500000] UDP hash table entries: 256 (order: 0, 4096 bytes, linear) > [ 2.510000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes, linear) > [ 2.530000] NET: Registered protocol family 1 > [ 2.560000] random: fast init done > [ 2.580000] RPC: Registered named UNIX socket transport module. > [ 2.590000] RPC: Registered udp transport module. > [ 2.600000] RPC: Registered tcp transport module. > [ 2.610000] RPC: Registered tcp NFSv4.1 backchannel transport module. > [ 2.690000] workingset: timestamp_bits=30 max_order=12 bucket_order=0 > [ 3.940000] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253) > [ 3.950000] io scheduler mq-deadline registered > [ 3.990000] macfb: framebuffer at 0xfee00020, mapped to 0x(ptrval), size 480k > [ 4.000000] macfb: mode is 640x480x8, linelength=1024 > [ 4.370000] Console: switching to colour frame buffer device 80x30 > [ 4.690000] fb0: Toby frame buffer device > [ 4.710000] pmac_zilog: 0.6 (Benjamin Herrenschmidt ) > [ 4.720000] scc.0: ttyS0 at MMIO 0x50f04002 (irq = 4, base_baud = 230400) is a Z85c30 ESCC - Serial port > [ 4.760000] scc.1: ttyS1 at MMIO 0x50f04000 (irq = 4, base_baud = 230400) is a Z85c30 ESCC - Serial port > [ 4.800000] Non-volatile memory driver v1.3 > [ 4.820000] SWIM floppy driver Version 0.2 (2008-10-30) > [ 5.070000] brd: module loaded > [ 5.080000] adb: Mac II ADB Driver v1.0 for Unified ADB > [ 5.110000] Uniform Multi-Platform E-IDE driver > [ 5.130000] ide-gd driver 1.18 > [ 5.460000] scsi host0: Macintosh NCR5380 SCSI, irq 19, io_port 0x0, base 0x50010000, can_queue 16, cmd_per_lun 2, sg_tablesize 1, this_id 7, flags { } > [ 5.530000] scsi 0:0:0:0: Direct-Access codesrc SCSI2SD 4.2 PQ: 0 ANSI: 2 CCS > [ 5.760000] Detected ADB keyboard, type ANSI. > [ 5.800000] input: ADB keyboard as /devices/virtual/input/input0 > [ 5.980000] input: ADB mouse as /devices/virtual/input/input1 > [ 6.150000] scsi 0:0:3:0: CD-ROM PIONEER CD-ROM DR-124X 1.05 PQ: 0 ANSI: 2 > [ 7.070000] sd 0:0:0:0: [sda] 60556288 512-byte logical blocks: (31.0 GB/28.9 GiB) > [ 7.080000] sr 0:0:3:0: [sr0] scsi3-mmc drive: 4x/4x xa/form2 cdda tray > [ 7.090000] cdrom: Uniform CD-ROM driver Revision: 3.20 > [ 7.110000] sd 0:0:0:0: [sda] Write Protect is off > [ 7.150000] sd 0:0:0:0: [sda] Cache data unavailable > [ 7.160000] sd 0:0:0:0: [sda] Assuming drive cache: write through > [ 7.290000] sd 0:0:0:0: Attached scsi generic sg0 type 0 > [ 7.340000] sda: [mac] sda1 sda2 sda3 sda4 sda5 sda6 sda7 sda8 sda9 > [ 7.370000] sr 0:0:3:0: Attached scsi generic sg1 type 5 > [ 7.390000] mac8390 slot.D: Memory length resource not found, probing > [ 7.400000] mac8390 slot.D: MacCon Ethernet (type asante) > [ 7.410000] mac8390 slot.D: MAC 00:00:94:21:84:9a, IRQ 60, 32 KB shared memory at 0xfddd0000, 16-bit access. > [ 7.750000] aoe: AoE v85 initialised. > [ 7.780000] sd 0:0:0:0: [sda] Attached SCSI disk > [ 7.820000] mousedev: PS/2 mouse device common for all mice > [ 7.870000] rtc-generic rtc-generic: registered as rtc0 > [ 7.910000] NET: Registered protocol family 17 > [ 7.930000] printk: bootconsole [debug0] disabled > [ 7.990000] EXT4-fs (sda5): mounting ext3 file system using the ext4 subsystem > [ 8.830000] EXT4-fs (sda5): mounted filesystem with ordered data mode. Opts: (null). Quota mode: disabled. > [ 8.860000] VFS: Mounted root (ext3 filesystem) readonly on device 8:5. > [ 8.880000] Freeing unused kernel memory: 128K > [ 8.890000] This architecture does not have kernel memory protection. > [ 8.910000] Run /start.sh as init process > [ 20.830000] random: crng init done > # cat /proc/meminfo > MemTotal: 12256 kB > MemFree: 2636 kB > MemAvailable: 8652 kB > Buffers: 2592 kB > Cached: 4508 kB > SwapCached: 0 kB > Active: 4884 kB > Inactive: 2352 kB > Active(anon): 8 kB > Inactive(anon): 124 kB > Active(file): 4876 kB > Inactive(file): 2228 kB > Unevictable: 0 kB > Mlocked: 0 kB > SwapTotal: 0 kB > SwapFree: 0 kB > Dirty: 0 kB > Writeback: 0 kB > AnonPages: 152 kB > Mapped: 1200 kB > Shmem: 0 kB > KReclaimable: 232 kB > Slab: 1680 kB > SReclaimable: 232 kB > SUnreclaim: 1448 kB > KernelStack: 256 kB > PageTables: 4 kB > NFS_Unstable: 0 kB > Bounce: 0 kB > WritebackTmp: 0 kB > CommitLimit: 6128 kB > Committed_AS: 800 kB > VmallocTotal: 3334144 kB > VmallocUsed: 64 kB > VmallocChunk: 0 kB > Percpu: 32 kB > # reboot -f > [ 66.740000] reboot: Restarting system > -- Sincerely yours, Mike.