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Date: Fri, 23 Nov 2018 18:11:09 +0200 From: Meelis Roos <mroos@...ux.ee> To: Mike Rapoport <rppt@...ux.ibm.com> Cc: LKML <linux-kernel@...r.kernel.org>, linux-alpha@...r.kernel.org Subject: Re: NO_BOOTMEM breaks alpha pc164 >> 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. Here is the serial console output from a boot with the debug patch applied: (boot dka0.0.0.5.0 -flags 0) block 0 of dka0.0.0.5.0 is a valid boot block reading 161 blocks from dka0.0.0.5.0 bootstrap code read in base = 180000, image_start = 0, image_bytes = 14200 initializing HWRPB at 2000 initializing page table at 172000 initializing machine state setting affinity to the primary CPU jumping to bootstrap code aboot: Linux/Alpha SRM bootloader version 1.0_pre20040408 aboot: switching to OSF/1 PALcode version 1.23 aboot: booting from device 'SCSI 0 5 0 0 0 0 0' aboot: valid disklabel found: 4 partitions. aboot: loading uncompressed test... aboot: loading compressed test... aboot: PHDR 0 vaddr 0xfffffc0000310000 offset 0x2000 size 0x79925c aboot: bss at 0xfffffc0000aa925c, size 0x16469c aboot: zero-filling 1459868 bytes at 0xfffffc0000aa925c aboot: starting kernel test with arguments root=/dev/sda2 console=ttyS0 [ 0.000000] Linux version 4.20.0-rc2-00068-gda5322e65940-dirty (mroos@...64) (gcc version 7.3.0 (Gentoo 7.3.0-r3 p1.4)) #115 Fri Nov 23 17:38:17 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 192, end 32651 [ 0.000000] memblock_add: [0x0000000000000000-0x000000000ff15fff] setup_memory+0x39c/0x478 [ 0.000000] memblock_reserve: [0x0000000000300000-0x0000000000c11fff] setup_memory+0x444/0x478 [ 0.000000] 1024K Bcache detected; load hit latency 30 cycles, load miss latency 212 cycles [ 0.000000] pci: cia revision 2 [ 0.000000] memblock_alloc_try_nid: 104 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 alloc_pci_controller+0x2c/0x50 [ 0.000000] memblock_reserve: [0x000000000ff15f80-0x000000000ff15fe7] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 64 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 alloc_resource+0x2c/0x40 [ 0.000000] memblock_reserve: [0x000000000ff15f40-0x000000000ff15f7f] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 40 bytes align=0x8000 nid=0 from=0x0000000000000000 max_addr=0x0000000000000000 iommu_arena_new_node+0x74/0x1b0 [ 0.000000] memblock_reserve: [0x000000000ff10000-0x000000000ff10027] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 40 bytes align=0x8000 nid=0 from=0x0000000000000000 max_addr=0x0000000000000000 iommu_arena_new_node+0x104/0x1b0 [ 0.000000] memblock_reserve: [0x000000000ff08000-0x000000000ff08027] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 1024 bytes align=0x8000 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 do_init_arch+0x37c/0x448 [ 0.000000] memblock_reserve: [0x000000000ff00000-0x000000000ff003ff] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid_nopanic: 1835008 bytes align=0x20 nid=0 from=0x0000000000000000 max_addr=0x0000000000000000 alloc_node_mem_map+0x7c/0xa8 [ 0.000000] memblock_reserve: [0x000000000fd40000-0x000000000fefffff] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid_nopanic: 16 bytes align=0x20 nid=0 from=0x0000000000000000 max_addr=0x0000000000000000 setup_usemap.isra.111+0x5c/0x78 [ 0.000000] memblock_reserve: [0x000000000ff15f20-0x000000000ff15f2f] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 29 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 memblock_alloc.constprop.14+0x28/0x40 [ 0.000000] memblock_reserve: [0x000000000ff15f00-0x000000000ff15f1c] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 29 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 memblock_alloc.constprop.14+0x28/0x40 [ 0.000000] memblock_reserve: [0x000000000ff15ee0-0x000000000ff15efc] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 29 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 memblock_alloc.constprop.14+0x28/0x40 [ 0.000000] memblock_reserve: [0x000000000ff15ec0-0x000000000ff15edc] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid_nopanic: 8192 bytes align=0x2000 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 pcpu_alloc_alloc_info+0x5c/0xc8 [ 0.000000] memblock_reserve: [0x000000000ff12000-0x000000000ff13fff] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid_nopanic: 32768 bytes align=0x2000 nid=-1 from=0x000003ffffffffff max_addr=0x0000000000000000 setup_per_cpu_areas+0x70/0x118 [ 0.000000] memblock_reserve: [0x000000000fd38000-0x000000000fd3ffff] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 8 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 memblock_alloc.constprop.29+0x28/0x40 [ 0.000000] memblock_reserve: [0x000000000ff15ea0-0x000000000ff15ea7] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 8 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 memblock_alloc.constprop.29+0x28/0x40 [ 0.000000] memblock_reserve: [0x000000000ff15e80-0x000000000ff15e87] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 4 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 memblock_alloc.constprop.29+0x28/0x40 [ 0.000000] memblock_reserve: [0x000000000ff15e60-0x000000000ff15e63] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 8 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 memblock_alloc.constprop.29+0x28/0x40 [ 0.000000] memblock_reserve: [0x000000000ff15e40-0x000000000ff15e47] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 240 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 memblock_alloc.constprop.29+0x28/0x40 [ 0.000000] memblock_reserve: [0x000000000ff15d40-0x000000000ff15e2f] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 105 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 memblock_alloc.constprop.29+0x28/0x40 [ 0.000000] memblock_reserve: [0x000000000ff15cc0-0x000000000ff15d28] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 1024 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 memblock_alloc.constprop.29+0x28/0x40 [ 0.000000] memblock_reserve: [0x000000000ff158c0-0x000000000ff15cbf] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 1032 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 memblock_alloc.constprop.29+0x28/0x40 [ 0.000000] memblock_reserve: [0x000000000ff154a0-0x000000000ff158a7] memblock_alloc_internal+0x170/0x278 [ 0.000000] memblock_alloc_try_nid: 80 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 memblock_alloc.constprop.29+0x28/0x40 [ 0.000000] memblock_reserve: [0x000000000ff15440-0x000000000ff1548f] memblock_alloc_internal+0x170/0x278 [ 0.000000] __memblock_free_early: [0x000000000ff12000-0x000000000ff13fff] pcpu_free_alloc_info+0x2c/0x40 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 32427 [ 0.000000] Kernel command line: root=/dev/sda2 console=ttyS0 [ 0.000000] memblock_alloc_try_nid_nopanic: 262144 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 alloc_large_system_hash+0x258/0x3dc [ 0.000000] memblock_reserve: [0x000000000fcf8000-0x000000000fd37fff] memblock_alloc_internal+0x170/0x278 [ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 262144 bytes) [ 0.000000] memblock_alloc_try_nid_nopanic: 131072 bytes align=0x20 nid=-1 from=0x0000000000000000 max_addr=0x0000000000000000 alloc_large_system_hash+0x258/0x3dc [ 0.000000] memblock_reserve: [0x000000000fcd8000-0x000000000fcf7fff] memblock_alloc_internal+0x170/0x278 [ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 131072 bytes) [ 0.000000] Sorting __ex_table... [ 0.000000] Memory: 249680K/261208K available (5455K kernel code, 372K rwdata, 1740K rodata, 200K init, 1425K bss, 11528K 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 [ 0.074218] printk: console [ttyS0] enabled [ 0.076171] Calibrating delay loop... 985.92 BogoMIPS (lpj=480768) [ 0.084960] pid_max: default: 32768 minimum: 301 [ 0.086914] Mount-cache hash table entries: 1024 (order: 0, 8192 bytes) [ 0.087890] Mountpoint-cache hash table entries: 1024 (order: 0, 8192 bytes) [ 0.098632] devtmpfs: initialized [ 0.101562] random: get_random_u32 called from bucket_table_alloc.isra.19+0xbc/0x280 with crng_init=0 [ 0.102539] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1866466235866741 ns [ 0.103515] futex hash table entries: 256 (order: -1, 6144 bytes) [ 0.106445] NET: Registered protocol family 16 [ 0.108398] pci: passed tb register update test [ 0.109374] pci: passed sg loopback i/o read test [ 0.110351] pci: passed tbia test [ 0.111328] pci: passed pte write cache snoop test halted CPU 0 halt code = 7 machine check while in PAL mode PC = 1814c boot failure >>> -- Meelis Roos <mroos@...ux.ee>
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