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Date: Fri, 17 Dec 2010 15:32:37 -0800 From: Venkatesh Pallipadi <venki@...gle.com> To: Yinghai Lu <yinghai@...nel.org> Cc: "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>, Andrew Morton <akpm@...ux-foundation.org>, Thomas Gleixner <tglx@...utronix.de>, Wu Fengguang <fengguang.wu@...el.com>, Peter Zijlstra <peterz@...radead.org>, LKML <linux-kernel@...r.kernel.org>, Nikanth Karthikesan <knikanth@...e.de>, David Rientjes <rientjes@...gle.com>, "Zheng, Shaohui" <shaohui.zheng@...el.com>, Eric Dumazet <eric.dumazet@...il.com>, Bjorn Helgaas <bjorn.helgaas@...com>, Nikhil Rao <ncrao@...gle.com>, Takuya Yoshikawa <yoshikawa.takuya@....ntt.co.jp> Subject: Re: [PATCH -v2 2/2] x86, acpi: Parse all SRAT cpu entries even have cpu num limitation On Fri, Dec 17, 2010 at 11:27 AM, Yinghai Lu <yinghai@...nel.org> wrote: > On 12/17/2010 10:53 AM, Venkatesh Pallipadi wrote: >> linus git + these two patches still fails on my test system with the >> divide error. The failure dump is similar to what I reported here >> http://lkml.indiana.edu/hypermail//linux/kernel/1012.1/03641.html >> >> This patch description talk about new Intel systems. The test system I >> am seeing failure here is an ancient Intel (2 socket P4 HT) system. >> AFAICS, it does not even have an SRAT table (no "ACPI: SRAT" message >> in dmesg). > > that could be different cause. > > Do you have whole boot log with debug etc? > > This regression seems to be specific to fake numa configuration. Boots fine without "numa=fake=128M". Also, I see that the problem started between 2.6.36 and 2.6.37-rc1. I haven't done further bisect yet. Below is the log with debug Thanks, Venki [ 0.000000] Linux version 2.6.37-smp-DEV (venki@...py.mtv.corp.google.com) (gcc version 4.4.0 (Google_crosstoolv13-gcc-4.4.0-glibc-2.3.6-grte) ) #8 SMP Fri Dec 17 14:58:29 PST 2010 [ 0.000000] Command line: auto BOOT_IMAGE=2637D ro root=/dev/hda1,/dev/sda1 oops=panic panic=10 io_delay=0xed libata.force=qd1 nmi_watchdog=panic tco_start=1 auto BOOT_IMAGE=2637D ro root=/dev/hda1,/dev/sda1 numa=fake=128M swiotlb=16000 debug console=ttyS0,115200n8 [ 0.000000] BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009d800 (usable) [ 0.000000] BIOS-e820: 000000000009d800 - 00000000000a0000 (reserved) [ 0.000000] BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved) [ 0.000000] BIOS-e820: 0000000000100000 - 00000000bfbe2c00 (usable) [ 0.000000] BIOS-e820: 00000000bfbe2c00 - 00000000bfbe7c00 (ACPI data) [ 0.000000] BIOS-e820: 00000000bfbe7c00 - 00000000bfbe8000 (ACPI NVS) [ 0.000000] BIOS-e820: 00000000bfbe8000 - 00000000c0000000 (reserved) [ 0.000000] BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved) [ 0.000000] BIOS-e820: 00000000fff00000 - 0000000100000000 (reserved) [ 0.000000] BIOS-e820: 0000000100000000 - 0000000440000000 (usable) [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] DMI 2.1 present. [ 0.000000] DMI: Unicorn_QCS_00 /E7320,6300ESB, BIOS 1.2.12 04/08/2008 [ 0.000000] e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved) [ 0.000000] e820 remove range: 00000000000a0000 - 0000000000100000 (usable) [ 0.000000] No AGP bridge found [ 0.000000] last_pfn = 0x440000 max_arch_pfn = 0x400000000 [ 0.000000] MTRR default type: uncachable [ 0.000000] MTRR fixed ranges enabled: [ 0.000000] 00000-9FFFF write-back [ 0.000000] A0000-BFFFF uncachable [ 0.000000] C0000-CFFFF write-protect [ 0.000000] D0000-DFFFF uncachable [ 0.000000] E0000-FFFFF write-protect [ 0.000000] MTRR variable ranges enabled: [ 0.000000] 0 base 000000000 mask C00000000 write-back [ 0.000000] 1 base 400000000 mask FC0000000 write-back [ 0.000000] 2 disabled [ 0.000000] 3 disabled [ 0.000000] 4 disabled [ 0.000000] 5 base 0C0000000 mask FC0000000 uncachable [ 0.000000] 6 disabled [ 0.000000] 7 disabled [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 [ 0.000000] e820 update range: 00000000c0000000 - 0000000100000000 (usable) ==> (reserved) [ 0.000000] last_pfn = 0xbfbe2 max_arch_pfn = 0x400000000 [ 0.000000] found SMP MP-table at [ffff88000009d890] 9d890 [ 0.000000] initial memory mapped : 0 - 20000000 [ 0.000000] init_memory_mapping: 0000000000000000-00000000bfbe2000 [ 0.000000] 0000000000 - 00bfa00000 page 2M [ 0.000000] 00bfa00000 - 00bfbe2000 page 4k [ 0.000000] kernel direct mapping tables up to bfbe2000 @ 1fffb000-20000000 [ 0.000000] init_memory_mapping: 0000000100000000-0000000440000000 [ 0.000000] 0100000000 - 0440000000 page 2M [ 0.000000] kernel direct mapping tables up to 440000000 @ bfbd0000-bfbe2000 [ 0.000000] ACPI: RSDP 00000000000f61e0 00014 (v00 GOOGLE) [ 0.000000] ACPI: RSDT 00000000bfbe7000 00030 (v01 GOOGLE RSDT_UNI 00000001 MSFT 32303262) [ 0.000000] ACPI: FACP 00000000bfbe6c00 00074 (v01 GOOGLE FACP_UNI 00000001 MSFT 32303262) [ 0.000000] ACPI Warning: Optional field Gpe1Block has zero address or length: 0x000000000000102C/0x0 (20101013/tbfadt-557) [ 0.000000] ACPI: DSDT 00000000bfbe2c00 01E45 (v01 GOOGLE DSDT0001 00000001 MSFT 02000002) [ 0.000000] ACPI: FACS 00000000bfbe7c00 00040 [ 0.000000] ACPI: APIC 00000000bfbe7400 00090 (v01 GOOGLE APIC_UNI 00000001 MSFT 32303262) [ 0.000000] ACPI: HPET 00000000bfbe7490 00038 (v01 GOOGLE HPET_UNI 00000001 MSFT 32303262) [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] Faking node 0 at 0000000000000000-000000000c000000 (192MB) [ 0.000000] Faking node 1 at 000000000c000000-0000000014000000 (128MB) <snip other messages like this for remaining nodes> [ 0.000000] NUMA: Allocated memnodemap from 43ffffdc0 - 440000000 [ 0.000000] NUMA: Using 26 for the hash shift. [ 0.000000] Initmem setup node 0 0000000000000000-000000000c000000 [ 0.000000] NODE_DATA [000000000bfec000 - 000000000bffffff] [ 0.000000] Initmem setup node 1 000000000c000000-0000000014000000 [ 0.000000] NODE_DATA [0000000013fec000 - 0000000013ffffff] <snip other messages like this for remaining nodes> [ 0.000000] Faking PXM affinity for fake nodes on real topology. [ 0.000000] [ffffea0000000000-ffffea00003fffff] PMD -> [ffff88000b200000-ffff88000b5fffff] on node 0 [ 0.000000] [ffffea0000400000-ffffea00005fffff] PMD -> [ffff880013c00000-ffff880013dfffff] on node 1 <snip other messages like this for remaining nodes> [ 0.000000] Zone PFN ranges: [ 0.000000] DMA 0x00000010 -> 0x00001000 [ 0.000000] DMA32 0x00001000 -> 0x00100000 [ 0.000000] Normal 0x00100000 -> 0x00440000 [ 0.000000] Movable zone start PFN for each node [ 0.000000] early_node_map[128] active PFN ranges [ 0.000000] 0: 0x00000010 -> 0x0000009d [ 0.000000] 0: 0x00000100 -> 0x0000c000 [ 0.000000] 1: 0x0000c000 -> 0x00014000 <snip other messages like this for remaining nodes> [ 0.000000] On node 0 totalpages: 49037 [ 0.000000] DMA zone: 56 pages used for memmap [ 0.000000] DMA zone: 2 pages reserved [ 0.000000] DMA zone: 3923 pages, LIFO batch:0 [ 0.000000] DMA32 zone: 616 pages used for memmap [ 0.000000] DMA32 zone: 44440 pages, LIFO batch:7 [ 0.000000] On node 1 totalpages: 32768 [ 0.000000] DMA32 zone: 448 pages used for memmap [ 0.000000] DMA32 zone: 32320 pages, LIFO batch:7 <snip other messages like this for remaining nodes> [ 0.000000] ACPI: PM-Timer IO Port: 0x1008 [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x06] enabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x07] enabled) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1]) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1]) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1]) [ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1]) [ 0.000000] ACPI: IOAPIC (id[0x0e] address[0xfec00000] gsi_base[0]) [ 0.000000] IOAPIC[0]: apic_id 14, version 32, address 0xfec00000, GSI 0-23 [ 0.000000] ACPI: IOAPIC (id[0x0d] address[0xfec10000] gsi_base[24]) [ 0.000000] IOAPIC[1]: apic_id 13, version 32, address 0xfec10000, GSI 24-47 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 high edge) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.000000] ACPI: IRQ0 used by override. [ 0.000000] ACPI: IRQ2 used by override. [ 0.000000] ACPI: IRQ10 used by override. [ 0.000000] Using ACPI (MADT) for SMP configuration information [ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000 [ 0.000000] SMP: Allowing 4 CPUs, 0 hotplug CPUs [ 0.000000] nr_irqs_gsi: 64 [ 0.000000] Allocating PCI resources starting at c0000000 (gap: c0000000:20000000) [ 0.000000] setup_percpu: NR_CPUS:32 nr_cpumask_bits:32 nr_cpu_ids:4 nr_node_ids:127 [ 0.000000] PERCPU: Embedded 26 pages/cpu @ffff88000bc00000 s74752 r8192 d23552 u2097152 [ 0.000000] pcpu-alloc: s74752 r8192 d23552 u2097152 alloc=1*2097152 [ 0.000000] pcpu-alloc: [0] 0 [1] 1 [2] 2 [3] 3 [ 0.000000] Built 127 zonelists in Node order, mobility grouping on. Total pages: 4135803 [ 0.000000] Policy zone: Normal [ 0.000000] Kernel command line: oops=panic panic=10 io_delay=0xed libata.force=qd1 nmi_watchdog=panic tco_start=1 auto BOOT_IMAGE=2637D ro root=/dev/hda1,/dev/sda1 oops=panic panic=10 io_delay=0xed libata.force=qd1 nmi_watchdog=panic tco_start=1 auto BOOT_IMAGE=2637D ro root=/dev/hda1,/dev/sda1 numa=fake=128M swiotlb=16000 debug console=ttyS0,115200n8 [ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes) [ 0.000000] Checking aperture... [ 0.000000] No AGP bridge found [ 0.000000] Memory: 16487120k/17825792k available (4507k kernel code, 1053252k absent, 285420k reserved, 4535k data, 1708k init) [ 0.000000] SLUB: Genslabs=15, HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=127 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU-based detection of stalled CPUs is disabled. [ 0.000000] NR_IRQS:4352 nr_irqs:1024 16 [ 0.000000] Console: colour dummy device 80x25 [ 0.000000] console [ttyS0] enabled [ 0.000000] hpet clockevent registered [ 0.000000] Fast TSC calibration using PIT [ 0.000000] Detected 2799.987 MHz processor. [ 0.003008] Calibrating delay loop (skipped), value calculated using timer frequency.. 5599.97 BogoMIPS (lpj=2799987) [ 0.005004] pid_max: default: 32768 minimum: 301 [ 0.009974] Security Framework initialized [ 0.019930] Dentry cache hash table entries: 2097152 (order: 12, 16777216 bytes) [ 0.038319] Inode-cache hash table entries: 1048576 (order: 11, 8388608 bytes) [ 0.045857] Mount-cache hash table entries: 256 [ 0.048347] Initializing cgroup subsys cpuacct [ 0.050523] CPU: Physical Processor ID: 0 [ 0.051004] CPU: Processor Core ID: 0 [ 0.052004] mce: CPU supports 4 MCE banks [ 0.053016] CPU0: Thermal monitoring enabled (TM1) [ 0.054009] using mwait in idle threads. [ 0.055004] Performance Events: Netburst events, Netburst P4/Xeon PMU driver. [ 0.058007] ... version: 0 [ 0.059003] ... bit width: 40 [ 0.060003] ... generic registers: 18 [ 0.061003] ... value mask: 000000ffffffffff [ 0.062003] ... max period: 0000007fffffffff [ 0.063003] ... fixed-purpose events: 0 [ 0.064003] ... event mask: 000000000003ffff [ 0.065034] Freeing SMP alternatives: 20k freed [ 0.066032] ACPI: Core revision 20101013 [ 0.073546] ftrace: allocating 21854 entries in 86 pages [ 0.077090] Setting APIC routing to flat [ 0.078402] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 0.089424] CPU0: Intel(R) Xeon(TM) CPU 2.80GHz stepping 01 [ 0.092999] Booting Node 1, Processors #1 Ok. [ 0.165701] Booting Node 2, Processors #2 Ok. [ 0.246730] Booting Node 3, Processors #3 Ok. [ 0.320014] Brought up 4 CPUs [ 0.321006] Total of 4 processors activated (22399.71 BogoMIPS). [ 0.323724] divide error: 0000 [#1] SMP [ 0.323999] last sysfs file: [ 0.323999] CPU 1 [ 0.323999] Modules linked in: [ 0.323999] [ 0.323999] Pid: 2, comm: kthreadd Not tainted 2.6.37-smp-DEV #8 Unicorn_QCS_00 /E7320,6300ESB [ 0.323999] RIP: 0010:[<ffffffff81062a47>] [<ffffffff81062a47>] select_task_rq_fair+0x5dd/0x70a [ 0.323999] RSP: 0000:ffff880008c65c00 EFLAGS: 00010046 [ 0.323999] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 0.323999] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000020 [ 0.323999] RBP: ffff880008c65cd0 R08: 0000000000000000 R09: 0000000000000000 [ 0.323999] R10: 000000000000037a R11: ffffffffffffffff R12: 00000000000117c0 [ 0.323999] R13: ffff880013a0db90 R14: 0000000000000001 R15: ffff880013435020 [ 0.323999] FS: 0000000000000000(0000) GS:ffff880013a00000(0000) knlGS:0000000000000000 [ 0.323999] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 0.323999] CR2: 0000000000000000 CR3: 0000000001803000 CR4: 00000000000006e0 [ 0.323999] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 0.323999] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 0.323999] Process kthreadd (pid: 2, threadinfo ffff880008c64000, task ffff88030f8387b0) [ 0.323999] Stack: [ 0.323999] 0000000000020010 ffff880013435038 ffffea0000437340 ffff880008c0b440 [ 0.323999] ffffffffffffffff 0000000000000000 000000000000037a 0000000000000000 [ 0.323999] ffff880000000000 ffff880013440000 00000000000117c0 00000000000117c0 [ 0.323999] Call Trace: [ 0.323999] [<ffffffff810670a0>] select_task_rq+0x28/0x115 [ 0.323999] [<ffffffff810686ef>] wake_up_new_task+0x3d/0xe1 [ 0.323999] [<ffffffff8106bee0>] do_fork+0x25f/0x2ab [ 0.323999] [<ffffffff81032687>] ? __switch_to+0xea/0x212 [ 0.323999] [<ffffffff8103a252>] kernel_thread+0x70/0x72 [ 0.323999] [<ffffffff81086405>] ? kthread+0x0/0x8a [ 0.323999] [<ffffffff81034910>] ? kernel_thread_helper+0x0/0x10 [ 0.323999] [<ffffffff81086580>] kthreadd+0xf1/0x12c [ 0.323999] [<ffffffff81034914>] kernel_thread_helper+0x4/0x10 [ 0.323999] [<ffffffff8108648f>] ? kthreadd+0x0/0x12c [ 0.323999] [<ffffffff81034910>] ? kernel_thread_helper+0x0/0x10 [ 0.323999] Code: 8b 8d 68 ff ff ff 4c 8b 95 60 ff ff ff 4c 8b 9d 50 ff ff ff 0f 8c 50 ff ff ff 41 8b 57 08 48 8b 45 c8 48 c1 e0 0a 48 89 d6 31 d2 <48> f7 f6 45 85 c0 75 13 4c 39 d8 73 0b 49 89 c3 4d 89 f9 4c 89 [ 0.323999] RIP [<ffffffff81062a47>] select_task_rq_fair+0x5dd/0x70a [ 0.323999] RSP <ffff880008c65c00> [ 0.354999] divide error: 0000 [#2] [ 0.323999] ---[ end trace 4eaa2a86a8e2da22 ]--- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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