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Date: Thu, 2 Feb 2012 14:51:54 +0100 From: Ingo Molnar <mingo@...e.hu> To: Steven Rostedt <rostedt@...dmis.org> Cc: linux-kernel@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>, Jason Baron <jbaron@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, Frederic Weisbecker <fweisbec@...il.com> Subject: Re: [PATCH 0/5 v2] [GIT PULL] x86/jump label: Paranoid checks and 2 or 5 byte nops * Steven Rostedt <rostedt@...dmis.org> wrote: > On Wed, 2012-02-01 at 09:05 +0100, Ingo Molnar wrote: > > * Steven Rostedt <rostedt@...dmis.org> wrote: > > > It would be better to make this a regular commit, this kind of > > diagnostics obviously makes sense. That way i could pull in your > > updated branch for more testing. > > > Ingo, > > I added the below patch on top of my previous pull request. If > you run this on the box that failed, it should give us a > little more info. Ok, here's the new debug output: [ 0.000000] Unexpected op at enqueue_task_fair+0xab/0x1fb [ffffffff81078a8d] (0f 1f 44 00 00) arch/x86/kernel/jump_label.c:74 PANIC: early exception 06 rip 10:ffffffff81a1d5f5 error 0 cr2 f06f53 (below is the full bootlog.) Thanks, Ingo [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Linux version 3.3.0-rc2-tip+ (mingo@...th5) (gcc version 4.7.0 20120112 (Red Hat 4.7.0-0.6) (GCC) ) #171448 SMP Thu Feb 2 13:22:44 CET 2012 [ 0.000000] Command line: root=/dev/sda6 earlyprintk=ttyS0,115200 console=ttyS0,115200 debug initcall_debug sysrq_always_enabled ignore_loglevel selinux=0 nmi_watchdog=1 panic=1 3 [ 0.000000] KERNEL supported cpus: [ 0.000000] AMD AuthenticAMD [ 0.000000] BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009f800 (usable) [ 0.000000] BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved) [ 0.000000] BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) [ 0.000000] BIOS-e820: 0000000000100000 - 000000003fff0000 (usable) [ 0.000000] BIOS-e820: 000000003fff0000 - 000000003fff3000 (ACPI NVS) [ 0.000000] BIOS-e820: 000000003fff3000 - 0000000040000000 (ACPI data) [ 0.000000] BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved) [ 0.000000] BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved) [ 0.000000] bootconsole [earlyser0] enabled [ 0.000000] debug: ignoring loglevel setting. [ 0.000000] NX (Execute Disable) protection: active [ 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 = 0x3fff0 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-C7FFF write-protect [ 0.000000] C8000-FFFFF uncachable [ 0.000000] MTRR variable ranges enabled: [ 0.000000] 0 base 0000000000 mask FFC0000000 write-back [ 0.000000] 1 disabled [ 0.000000] 2 disabled [ 0.000000] 3 disabled [ 0.000000] 4 disabled [ 0.000000] 5 disabled [ 0.000000] 6 disabled [ 0.000000] 7 disabled [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 [ 0.000000] found SMP MP-table at [ffff8800000f5680] f5680 [ 0.000000] initial memory mapped : 0 - 20000000 [ 0.000000] Base memory trampoline at [ffff88000009d000] 9d000 size 8192 [ 0.000000] init_memory_mapping: 0000000000000000-000000003fff0000 [ 0.000000] 0000000000 - 003fff0000 page 4k [ 0.000000] kernel direct mapping tables up to 3fff0000 @ 1fdfe000-20000000 [ 0.000000] Scanning NUMA topology in Northbridge 24 [ 0.000000] No NUMA configuration found [ 0.000000] Faking a node at 0000000000000000-000000003fff0000 [ 0.000000] Initmem setup node 0 0000000000000000-000000003fff0000 [ 0.000000] NODE_DATA [000000003ffe1000 - 000000003ffeffff] [ 0.000000] [ffffea0000000000-ffffea0000ffffff] PMD -> [ffff88003e600000-ffff88003f5fffff] on node 0 [ 0.000000] Zone PFN ranges: [ 0.000000] DMA 0x00000010 -> 0x00001000 [ 0.000000] DMA32 0x00001000 -> 0x00100000 [ 0.000000] Normal empty [ 0.000000] Movable zone start PFN for each node [ 0.000000] Early memory PFN ranges [ 0.000000] 0: 0x00000010 -> 0x0000009f [ 0.000000] 0: 0x00000100 -> 0x0003fff0 [ 0.000000] On node 0 totalpages: 262015 [ 0.000000] DMA zone: 64 pages used for memmap [ 0.000000] DMA zone: 2 pages reserved [ 0.000000] DMA zone: 3917 pages, LIFO batch:0 [ 0.000000] DMA32 zone: 4032 pages used for memmap [ 0.000000] DMA32 zone: 254000 pages, LIFO batch:31 [ 0.000000] SFI: Simple Firmware Interface v0.81 http://simplefirmware.org [ 0.000000] Intel MultiProcessor Specification v1.4 [ 0.000000] MPTABLE: OEM ID: OEM00000 [ 0.000000] MPTABLE: Product ID: PROD00000000 [ 0.000000] MPTABLE: APIC at: 0xFEE00000 [ 0.000000] Processor #0 (Bootup-CPU) [ 0.000000] Processor #1 [ 0.000000] IOAPIC[0]: apic_id 2, version 17, address 0xfec00000, GSI 0-23 [ 0.000000] Processors: 2 [ 0.000000] SMP: Allowing 2 CPUs, 0 hotplug CPUs [ 0.000000] nr_irqs_gsi: 40 [ 0.000000] PM: Registered nosave memory: 000000000009f000 - 00000000000a0000 [ 0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000f0000 [ 0.000000] PM: Registered nosave memory: 00000000000f0000 - 0000000000100000 [ 0.000000] Allocating PCI resources starting at 40000000 (gap: 40000000:a0000000) [ 0.000000] Booting paravirtualized kernel on bare hardware [ 0.000000] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 25 pages/cpu @ffff88003fc00000 s78224 r0 d24176 u1048576 [ 0.000000] pcpu-alloc: s78224 r0 d24176 u1048576 alloc=1*2097152 [ 0.000000] pcpu-alloc: [0] 0 1 [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 257917 [ 0.000000] Policy zone: DMA32 [ 0.000000] Kernel command line: root=/dev/sda6 earlyprintk=ttyS0,115200 console=ttyS0,115200 debug initcall_debug sysrq_always_enabled ignore_loglevel selinux=0 nmi_watchdog=1 panic=1 3 [ 0.000000] sysrq: sysrq always enabled. [ 0.000000] Unexpected op at enqueue_task_fair+0xab/0x1fb [ffffffff81078a8d] (0f 1f 44 00 00) arch/x86/kernel/jump_label.c:74 PANIC: early exception 06 rip 10:ffffffff81a1d5f5 error 0 cr2 f06f53 [ 0.000000] Pid: 0, comm: swapper Not tainted 3.3.0-rc2-tip+ #171448 [ 0.000000] Call Trace: [ 0.000000] [<ffffffff81a1d5f5>] ? bug_at+0x45/0x47 [ 0.000000] [<ffffffff81078a8d>] ? enqueue_task_fair+0xab/0x1fb [ 0.000000] [<ffffffff8200619e>] early_idt_handler+0x5e/0x71 [ 0.000000] [<ffffffff81a1d5f5>] ? bug_at+0x45/0x47 [ 0.000000] [<ffffffff81a1d5f5>] ? bug_at+0x45/0x47 [ 0.000000] [<ffffffff81025ad0>] __jump_label_transform+0xc8/0x169 [ 0.000000] [<ffffffff820088dc>] arch_jump_label_transform_static+0x6a/0x6f [ 0.000000] [<ffffffff8201b4ff>] jump_label_init+0x69/0x91 [ 0.000000] [<ffffffff82006970>] start_kernel+0x1b5/0x349 [ 0.000000] [<ffffffff82006277>] x86_64_start_reservations+0x7e/0x82 [ 0.000000] [<ffffffff820063c1>] x86_64_start_kernel+0x146/0x153 [ 0.000000] RIP bug_at+0x45/0x47 -- 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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