From: Ingo Molnar <mingo@elte.hu>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Jason Baron <jbaron@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Frederic Weisbecker <fweisbec@gmail.com>
Subject: Re: [PATCH 0/5 v2] [GIT PULL] x86/jump label: Paranoid checks and 2 or 5 byte nops
Date: Thu, 2 Feb 2012 14:51:54 +0100 [thread overview]
Message-ID: <20120202135154.GA10315@elte.hu> (raw)
In-Reply-To: <1328109697.5882.65.camel@gandalf.stny.rr.com>
* Steven Rostedt <rostedt@goodmis.org> wrote:
> On Wed, 2012-02-01 at 09:05 +0100, Ingo Molnar wrote:
> > * Steven Rostedt <rostedt@goodmis.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@earth5) (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
next prev parent reply other threads:[~2012-02-02 13:52 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-28 16:09 [PATCH 0/5 v2] [GIT PULL] x86/jump label: Paranoid checks and 2 or 5 byte nops Steven Rostedt
2012-01-28 16:09 ` [PATCH 1/5 v2] x86/jump-label: Use best default nops for inital jump label calls Steven Rostedt
2012-01-28 16:09 ` [PATCH 2/5 v2] x86/jump-label: Do not bother updating nops if they are correct Steven Rostedt
2012-01-28 16:09 ` [PATCH 3/5 v2] x86/jump-label: Add safety checks to jump label conversions Steven Rostedt
2012-01-28 16:09 ` [PATCH 4/5 v2] jump labels: Add infrastructure to update jump labels at compile time Steven Rostedt
2012-01-28 16:09 ` [PATCH 5/5 v2] x86/jump labels: Use etiher 5 byte or 2 byte jumps Steven Rostedt
2012-01-30 14:48 ` [PATCH 0/5 v2] [GIT PULL] x86/jump label: Paranoid checks and 2 or 5 byte nops Ingo Molnar
2012-01-30 15:07 ` Steven Rostedt
2012-01-31 19:48 ` Ingo Molnar
2012-02-01 5:08 ` Steven Rostedt
2012-02-01 8:05 ` Ingo Molnar
2012-02-01 13:20 ` Steven Rostedt
2012-02-01 15:21 ` Steven Rostedt
2012-02-02 13:51 ` Ingo Molnar [this message]
2012-02-02 14:10 ` H. Peter Anvin
2012-02-02 14:31 ` Steven Rostedt
2012-02-02 22:04 ` Steven Rostedt
2012-02-02 22:07 ` H. Peter Anvin
2012-02-02 22:53 ` Steven Rostedt
2012-02-03 7:36 ` Ingo Molnar
2012-02-03 13:31 ` Steven Rostedt
2012-02-05 11:47 ` Ingo Molnar
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