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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 23 Nov 2018 07:14:53 -0000 Received: from d06av24.portsmouth.uk.ibm.com (mk.ibm.com [9.149.105.60]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id wAN7EqAt7799134 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 23 Nov 2018 07:14:52 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 211214203F; Fri, 23 Nov 2018 07:14:52 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8EF3C42042; Fri, 23 Nov 2018 07:14:51 +0000 (GMT) Received: from rapoport-lnx (unknown [9.148.207.68]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Fri, 23 Nov 2018 07:14:51 +0000 (GMT) Date: Fri, 23 Nov 2018 09:14:49 +0200 From: Mike Rapoport To: Meelis Roos Cc: LKML , linux-alpha@vger.kernel.org, Mike Rapoport Subject: Re: NO_BOOTMEM breaks alpha pc164 References: <8c8e3dba-7adf-96c6-195c-311050256743@linux.ee> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8c8e3dba-7adf-96c6-195c-311050256743@linux.ee> User-Agent: Mutt/1.5.24 (2015-08-30) X-TM-AS-GCONF: 00 x-cbid: 18112307-0020-0000-0000-000002EC8155 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18112307-0021-0000-0000-0000213BC2AA Message-Id: <20181123071448.GE5704@rapoport-lnx> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-11-23_06:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1811230057 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Thu, Nov 22, 2018 at 03:27:44PM +0200, Meelis Roos wrote: > I have bisected 4.20-rc2 boot hang on a PC164 subarch alpha. > Other alphas in my collection are working fine. > > When it hangs, it hangs right after starting init. "random: crng init done" is printed > after starting init and nothing more appears on serial console. Can you please send the kernel log for the broken boot case? What happens if you try to boot with "init=/bin/sh" added to the kernel command line? Is the system able to start shell? > The bad commit is swith to NO_BOOTMEM. [ ... ] > How do I debug it? Apparently, some of the early memory registration is not properly converted from bootmem to memblock + nobootmem for your system. You can try applying the below patch to enable debug printouts from memblock, maybe it'll shed some more light. diff --git a/mm/memblock.c b/mm/memblock.c index 7df468c..a2c289e 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -119,7 +119,7 @@ struct memblock memblock __initdata_memblock = { .current_limit = MEMBLOCK_ALLOC_ANYWHERE, }; -int memblock_debug __initdata_memblock; +int memblock_debug __initdata_memblock = 1; static bool system_has_some_mirror __initdata_memblock = false; static int memblock_can_resize __initdata_memblock; static int memblock_memory_in_slab __initdata_memblock = 0; > dmesg from working boot before the commit: > > [ 0.000000] Linux version 4.19.0-06941-ge92d39cdb120 (mroos@pc164) (gcc version 7.3.0 (Gentoo 7.3.0-r3 p1.4)) #113 Wed Nov 21 23:11:58 EET 2018 > [ 0.000000] Booting on EB164 variation PC164 using machine vector PC164 from SRM > [ 0.000000] Major Options: EV56 LEGACY_START VERBOSE_MCHECK DISCONTIGMEM MAGIC_SYSRQ > [ 0.000000] Command line: root=/dev/sda2 console=ttyS0 > [ 0.000000] Raw memory layout: > [ 0.000000] memcluster 0, usage 1, start 0, end 192 > [ 0.000000] memcluster 1, usage 0, start 192, end 32651 > [ 0.000000] memcluster 2, usage 1, start 32651, end 32768 > [ 0.000000] Initializing bootmem allocator on Node ID 0 > [ 0.000000] memcluster 1, usage 0, start 192, end 32651 > [ 0.000000] Detected node memory: start 194, end 32651 > [ 0.000000] freeing pages 192:384 > [ 0.000000] freeing pages 1540:32651 > [ 0.000000] reserving pages 1540:1541 > [ 0.000000] 1024K Bcache detected; load hit latency 30 cycles, load miss latency 212 cycles > [ 0.000000] pci: cia revision 2 > [ 0.000000] On node 0 totalpages: 32651 > [ 0.000000] DMA zone: 224 pages used for memmap > [ 0.000000] DMA zone: 0 pages reserved > [ 0.000000] DMA zone: 32651 pages, LIFO batch:7 > [ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768 > [ 0.000000] pcpu-alloc: [0] 0 > [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 32427 > [ 0.000000] Kernel command line: root=/dev/sda2 console=ttyS0 > [ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 262144 bytes) > [ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 131072 bytes) > [ 0.000000] Sorting __ex_table... > [ 0.000000] Memory: 248176K/261208K available (5425K kernel code, 372K rwdata, 1732K rodata, 208K init, 1416K bss, 13032K reserved, 0K cma-reserved) > [ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=128 > [ 0.000000] NR_IRQS: 35 > [ 0.000000] clocksource: rpcc: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 3822520893 ns > [ 0.001953] Console: colour VGA+ 80x25 > [ 0.028320] printk: console [ttyS0] enabled > [ 0.029296] Calibrating delay loop... 979.52 BogoMIPS (lpj=478208) > [ 0.038085] pid_max: default: 32768 minimum: 301 > [ 0.040039] Mount-cache hash table entries: 1024 (order: 0, 8192 bytes) > [ 0.041015] Mountpoint-cache hash table entries: 1024 (order: 0, 8192 bytes) > [ 0.051757] devtmpfs: initialized > [ 0.054687] random: get_random_u32 called from bucket_table_alloc.isra.18+0xbc/0x270 with crng_init=0 > [ 0.056640] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1866466235866741 ns > [ 0.057617] futex hash table entries: 256 (order: -1, 6144 bytes) > [ 0.059570] NET: Registered protocol family 16 > [ 0.062499] pci: passed tb register update test > [ 0.063476] pci: passed sg loopback i/o read test > [ 0.064453] pci: passed tbia test > [ 0.065429] pci: passed pte write cache snoop test > [ 0.066406] pci: failed valid tag invalid pte reload test (mcheck; workaround available) > [ 0.067382] pci: passed pci machine check test > [ 0.068359] PCI host bridge to bus 0000:00 > [ 0.069335] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] > [ 0.070312] pci_bus 0000:00: root bus resource [mem 0x00000000-0x1fffffff] > [ 0.071289] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff] > [ 0.072265] pci 0000:00:05.0: [1000:000f] type 00 class 0x010000 > [ 0.072265] pci 0000:00:05.0: reg 0x10: [io 0x10000-0x100ff] > [ 0.072265] pci 0000:00:05.0: reg 0x14: [mem 0x82875000-0x828750ff] > [ 0.072265] pci 0000:00:05.0: reg 0x18: [mem 0x82874000-0x82874fff] > [ 0.072265] pci 0000:00:05.0: reg 0x30: [mem 0x82840000-0x8285ffff pref] > [ 0.073242] pci 0000:00:06.0: [102b:051b] type 00 class 0x030000 > [ 0.073242] pci 0000:00:06.0: reg 0x10: [mem 0x88000000-0x88ffffff pref] > [ 0.073242] pci 0000:00:06.0: reg 0x14: [mem 0x82870000-0x82873fff] > [ 0.073242] pci 0000:00:06.0: reg 0x18: [mem 0x82000000-0x827fffff] > [ 0.073242] pci 0000:00:06.0: reg 0x30: [mem 0x82860000-0x8286ffff pref] > [ 0.074218] pci 0000:00:08.0: [8086:0484] type 00 class 0x000000 > [ 0.074218] pci 0000:00:09.0: [1011:0009] type 00 class 0x020000 > [ 0.074218] pci 0000:00:09.0: reg 0x10: [io 0x10100-0x1017f] > [ 0.074218] pci 0000:00:09.0: reg 0x14: [mem 0x82875100-0x8287517f] > [ 0.074218] pci 0000:00:09.0: reg 0x30: [mem 0x82800000-0x8283ffff pref] > [ 0.075195] pci 0000:00:0b.0: [1095:0646] type 00 class 0x010180 > [ 0.075195] pci 0000:00:0b.0: reg 0x20: [io 0x10180-0x1018f] > [ 0.075195] pci 0000:00:0b.0: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7] > [ 0.076171] pci 0000:00:0b.0: legacy IDE quirk: reg 0x14: [io 0x03f6] > [ 0.077148] pci 0000:00:0b.0: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177] > [ 0.078124] pci 0000:00:0b.0: legacy IDE quirk: reg 0x1c: [io 0x0376] > [ 0.080078] pci: enabling save/restore of SRM state > [ 0.081054] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00 > [ 0.081054] pci 0000:00:06.0: BAR 0: assigned [mem 0x03000000-0x03ffffff pref] > [ 0.082031] pci 0000:00:06.0: BAR 2: assigned [mem 0x02800000-0x02ffffff] > [ 0.083007] pci 0000:00:09.0: BAR 6: assigned [mem 0x02200000-0x0223ffff pref] > [ 0.083984] pci 0000:00:05.0: BAR 6: assigned [mem 0x02240000-0x0225ffff pref] > [ 0.084960] pci 0000:00:06.0: BAR 6: assigned [mem 0x02260000-0x0226ffff pref] > [ 0.085937] pci 0000:00:06.0: BAR 1: assigned [mem 0x02270000-0x02273fff] > [ 0.086914] pci 0000:00:05.0: BAR 2: assigned [mem 0x02274000-0x02274fff] > [ 0.088867] pci 0000:00:05.0: BAR 0: assigned [io 0x8000-0x80ff] > [ 0.089843] pci 0000:00:05.0: BAR 1: assigned [mem 0x02275000-0x022750ff] > [ 0.090820] pci 0000:00:09.0: BAR 0: assigned [io 0x8400-0x847f] > [ 0.091796] pci 0000:00:09.0: BAR 1: assigned [mem 0x02276000-0x0227607f] > [ 0.092773] pci 0000:00:0b.0: BAR 4: assigned [io 0x8480-0x848f] > [ 0.093749] pci_bus 0000:00: resource 4 [io 0x0000-0xffff] > [ 0.093749] pci_bus 0000:00: resource 5 [mem 0x00000000-0x1fffffff] > [ 0.094726] SMC FDC37C93X Ultra I/O Controller found @ 0x370 > [ 0.105468] pci 0000:00:06.0: vgaarb: setting as boot VGA device > [ 0.105468] pci 0000:00:06.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none > [ 0.106445] pci 0000:00:06.0: vgaarb: bridge control possible > [ 0.107421] vgaarb: loaded > [ 0.109374] SCSI subsystem initialized > [ 0.113281] clocksource: Switched to clocksource rpcc > [ 0.138671] NET: Registered protocol family 2 > [ 0.141601] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 8192 bytes) > [ 0.142578] TCP established hash table entries: 2048 (order: 1, 16384 bytes) > [ 0.143554] TCP bind hash table entries: 2048 (order: 1, 16384 bytes) > [ 0.144531] TCP: Hash tables configured (established 2048 bind 2048) > [ 0.146484] UDP hash table entries: 256 (order: 0, 8192 bytes) > [ 0.147460] UDP-Lite hash table entries: 256 (order: 0, 8192 bytes) > [ 0.149413] NET: Registered protocol family 1 > [ 0.150390] PCI: CLS 0 bytes, default 32 > [ 0.153320] srm_env: version 0.0.6 loaded successfully > [ 0.154296] Using epoch 2000 for rtc year 18 > [ 0.157226] platform rtc-alpha: rtc core: registered rtc-alpha as rtc0 > [ 0.159179] workingset: timestamp_bits=55 max_order=15 bucket_order=0 > [ 0.196288] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252) > [ 0.198242] io scheduler noop registered > [ 0.199218] io scheduler cfq registered (default) > [ 0.201171] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled > [ 0.203124] serial8250: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A > [ 0.205078] serial8250: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A > [ 0.249999] random: fast init done > [ 0.358398] sym0: <875> rev 0x3 at pci 0000:00:05.0 irq 18 > [ 0.362304] Floppy drive(s): fd0 is 2.88M > [ 0.452148] sym0: Symbios NVRAM, ID 7, Fast-20, SE, parity checking > [ 0.453124] sym0: open drain IRQ line driver, using on-chip SRAM > [ 0.454101] sym0: using LOAD/STORE-based firmware. > [ 0.455077] sym0: SCSI BUS has been reset. > [ 0.456054] scsi host0: sym-2.2.3 > [ 0.458984] Linux Tulip driver version 1.1.15-NAPI (Feb 27, 2007) > [ 0.463866] tulip0: Old format EEPROM on 'Accton EN1207' board. Using substitute media control info > [ 0.464843] tulip0: EEPROM default media type Autosense > [ 0.465820] tulip0: Index #0 - Media 10base2 (#1) described by a 21140 non-MII (0) block > [ 0.466796] tulip0: Index #1 - Media 10baseT (#0) described by a 21140 non-MII (0) block > [ 0.467773] tulip0: Index #2 - Media 10baseT-FDX (#4) described by a 21140 non-MII (0) block > [ 0.468749] tulip0: Index #3 - Media 100baseTx (#3) described by a 21140 non-MII (0) block > [ 0.469726] tulip0: Index #4 - Media 100baseTx-FDX (#5) described by a 21140 non-MII (0) block > [ 0.472656] net eth0: Digital DS21140 Tulip rev 34 at MMIO 0x2276000, 00:00:e8:3c:4e:c2, IRQ 19 > [ 0.480468] serio: i8042 KBD port at 0x60,0x64 irq 1 > [ 0.482421] serio: i8042 AUX port at 0x60,0x64 irq 12 > [ 0.487304] NET: Registered protocol family 10 > [ 0.491210] FDC 0 is a post-1991 82077 > [ 0.502929] atkbd serio0: keyboard reset failed on isa0060/serio0 > [ 0.503905] Segment Routing with IPv6 > [ 0.504882] NET: Registered protocol family 17 > [ 0.508788] platform rtc-alpha: setting system clock to 2018-11-22 14:26:16 UTC (1542896776) > [ 0.552734] atkbd serio1: keyboard reset failed on isa0060/serio1 > [ 0.628905] atkbd serio0: keyboard reset failed on isa0060/serio0 > [ 0.693359] atkbd serio1: keyboard reset failed on isa0060/serio1 > [ 3.828123] scsi 0:0:0:0: Direct-Access COMPAQ BF0369A4BC HPB7 PQ: 0 ANSI: 3 > [ 3.829099] scsi target0:0:0: tagged command queuing enabled, command queue depth 16. > [ 3.830076] scsi target0:0:0: Beginning Domain Validation > [ 3.836912] scsi target0:0:0: FAST-20 WIDE SCSI 40.0 MB/s ST (50 ns, offset 15) > [ 3.840818] scsi target0:0:0: Domain Validation skipping write tests > [ 3.841794] scsi target0:0:0: Ending Domain Validation > [ 3.843748] scsi 0:0:0:0: Power-on or device reset occurred > [ 7.989253] sd 0:0:0:0: Attached scsi generic sg0 type 0 > [ 7.991206] sd 0:0:0:0: [sda] 71132000 512-byte logical blocks: (36.4 GB/33.9 GiB) > [ 7.993159] sd 0:0:0:0: [sda] Write Protect is off > [ 7.994136] sd 0:0:0:0: [sda] Mode Sense: cf 00 10 08 > [ 7.995113] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, supports DPO and FUA > [ 8.009761] sda: sda1 sda2 sda4 > [ 8.017574] sd 0:0:0:0: [sda] Attached SCSI disk > [ 8.041988] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null) > [ 8.042964] VFS: Mounted root (ext4 filesystem) readonly on device 8:2. > [ 8.059566] devtmpfs: mounted > [ 8.061519] Freeing unused kernel memory: 208K > [ 8.062495] This architecture does not have kernel memory protection. > [ 8.063472] Run /sbin/init as init process > [ 8.319331] random: crng init done > [ 21.777332] udevd[477]: starting version 3.2.5 > [ 21.949207] udevd[478]: starting eudev-3.2.5 > [ 23.199206] tulip 0000:00:09.0 enp0s9: renamed from eth0 > [ 23.864245] libata version 3.00 loaded. > [ 24.037097] scsi host1: pata_cmd64x > [ 24.055651] scsi host2: pata_cmd64x > [ 24.055651] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0x8480 irq 14 > [ 24.055651] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0x8488 irq 15 > [ 24.056628] pata_cmd64x: active 10 recovery 10 setup 3. > [ 24.056628] pata_cmd64x: active 10 recovery 10 setup 3. > [ 24.232409] ata1.00: ATAPI: SONY CD-RW CRX140E, 1.2a, max UDMA/33 > [ 24.232409] pata_cmd64x: active 3 recovery 1 setup 1. > [ 24.232409] pata_cmd64x: active 3 recovery 1 setup 1. > [ 24.262682] scsi 1:0:0:0: CD-ROM SONY CD-RW CRX140E 1.2a PQ: 0 ANSI: 5 > [ 24.281237] sr 1:0:0:0: [sr0] scsi3-mmc drive: 32x/32x writer cd/rw xa/form2 cdda tray > [ 24.281237] cdrom: Uniform CD-ROM driver Revision: 3.20 > [ 24.282214] sr 1:0:0:0: Attached scsi CD-ROM sr0 > [ 24.284167] sr 1:0:0:0: Attached scsi generic sg1 type 5 > [ 24.285143] pata_cmd64x: active 10 recovery 10 setup 3. > [ 24.285143] pata_cmd64x: active 10 recovery 10 setup 3. > [ 29.485336] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro > [ 31.106429] Adding 1697208k swap on /dev/sda4. Priority:-2 extents:1 across:1697208k > [ 31.825179] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem > [ 31.846663] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null) > > -- > Meelis Roos > -- Sincerely yours, Mike.