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Date: Tue, 11 Jan 2011 10:13:52 +0200
From: "Kirill A. Shutemov" <kirill@...temov.name>
To: mingo@...hat.com, hpa@...or.com, linux-kernel@...r.kernel.org,
andi@...stfloor.org, johnstul@...ibm.com, williams@...hat.com,
schwidefsky@...ibm.com, tglx@...utronix.de, mingo@...e.hu
Cc: linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/tsc] x86: Improve TSC calibration using a delayed
workqueue
On Sun, Dec 05, 2010 at 11:18:53AM +0000, tip-bot for John Stultz wrote:
> Commit-ID: 08ec0c58fb8a05d3191d5cb6f5d6f81adb419798
> Gitweb: http://git.kernel.org/tip/08ec0c58fb8a05d3191d5cb6f5d6f81adb419798
> Author: John Stultz <johnstul@...ibm.com>
> AuthorDate: Tue, 27 Jul 2010 17:00:00 -0700
> Committer: John Stultz <john.stultz@...aro.org>
> CommitDate: Thu, 2 Dec 2010 16:48:37 -0800
>
> x86: Improve TSC calibration using a delayed workqueue
This commit breaks booting the kernel in qemu with enabled KVM on my machine.
.config attached.
[ 0.424013] divide error: 0000 [#1]
[ 0.424013] last sysfs file:
[ 0.424013] Modules linked in:
[ 0.424013]
[ 0.424013] Pid: 4, comm: kworker/0:0 Not tainted 2.6.37+ #86 /Bochs
[ 0.424013] EIP: 0060:[<c1042a73>] EFLAGS: 00010246 CPU: 0
[ 0.424013] EIP is at clocks_calc_mult_shift+0xb3/0xf0
[ 0.424013] EAX: 000f4240 EBX: 00000020 ECX: 000f4240 EDX: 00000000
[ 0.424013] ESI: 00000000 EDI: 00000000 EBP: c78e3eb4 ESP: c78e3e7c
[ 0.424013] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 0.424013] Process kworker/0:0 (pid: 4, ti=c78e2000 task=c78d1980 task.ti=c78e2000)
[ 0.424013] Stack:
[ 0.424013] c78d1ca8 0000024f c1412508 c1412504 00000000 00000000 000f4240 00000000
[ 0.424013] 00000020 00000000 000f4240 c14124e0 c78c7000 c1412508 c78e3ed8 c1042aeb
[ 0.424013] 000f4240 00001388 000003e8 c1412504 c14124e0 c78c7000 c78e6200 c78e3ee4
[ 0.424013] Call Trace:
[ 0.424013] [<c1042aeb>] __clocksource_updatefreq_scale+0x3b/0x60
[ 0.424013] [<c1042b1b>] __clocksource_register_scale+0xb/0x40
[ 0.424013] [<c10074f5>] tsc_refine_calibration_work+0x85/0x2a0
[ 0.424013] [<c1034580>] ? process_one_work+0xe0/0x390
[ 0.424013] [<c10345eb>] process_one_work+0x14b/0x390
[ 0.424013] [<c1034580>] ? process_one_work+0xe0/0x390
[ 0.424013] [<c101cdff>] ? wake_up_process+0xf/0x20
[ 0.424013] [<c1007470>] ? tsc_refine_calibration_work+0x0/0x2a0
[ 0.424013] [<c103536e>] worker_thread+0x10e/0x2a0
[ 0.424013] [<c1035260>] ? worker_thread+0x0/0x2a0
[ 0.424013] [<c1038884>] kthread+0x74/0x80
[ 0.424013] [<c1038810>] ? kthread+0x0/0x80
[ 0.424013] [<c1003096>] kernel_thread_helper+0x6/0x10
[ 0.424013] Code: 4d dc 0f 45 d0 0f 45 c6 89 55 f0 8b 55 d8 89 45 ec 01 55 ec 11 4d f0 8b 45 ec 8b 55 f0 89 d1 31 d2 85 c9 89 c6 74 08 89 c8 31 d2 <f7> f7 89 c1 89 f0 31 f6 f7 f7 89 ca 0f b6 4d e8 89 45 c8 89 55
[ 0.424013] EIP: [<c1042a73>] clocks_calc_mult_shift+0xb3/0xf0 SS:ESP 0068:c78e3e7c
[ 0.465178] ---[ end trace 6d450e935ee1897c ]---
[ 0.465178] BUG: unable to handle kernel paging request at fffffffc
[ 0.465178] IP: [<c10389aa>] kthread_data+0xa/0x10
[ 0.465178] *pde = 0148e067 *pte = 00000000
[ 0.465178] Oops: 0000 [#2]
[ 0.465178] last sysfs file:
[ 0.465178] Modules linked in:
[ 0.465178]
[ 0.465178] Pid: 4, comm: kworker/0:0 Tainted: G D 2.6.37+ #86 /Bochs
[ 0.465178] EIP: 0060:[<c10389aa>] EFLAGS: 00010046 CPU: 0
[ 0.465178] EIP is at kthread_data+0xa/0x10
[ 0.465178] EAX: 00000000 EBX: 00000000 ECX: c78d1980 EDX: 00000000
[ 0.465178] ESI: c1416980 EDI: c78d1980 EBP: c78e3c8c ESP: c78e3c80
[ 0.465178] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 0.465178] Process kworker/0:0 (pid: 4, ti=c78e2000 task=c78d1980 task.ti=c78e2000)
[ 0.465178] Stack:
[ 0.465178] c1035541 c78d1ae4 00000001 c78e3d10 c12f5fbf c7fedb00 c78e3cb0 c12eed9d
[ 0.465178] c78d8ac0 c7fedb00 c7ef12f4 c7805380 c78e3cc0 c78e3d10 c78d1980 c78d1980
[ 0.465178] 00000046 c140e180 c78d1980 c78d1980 c78d8ac0 c78e3cdc 00000246 c78e3d10
[ 0.465178] Call Trace:
[ 0.465178] [<c1035541>] ? wq_worker_sleeping+0x11/0x70
[ 0.465178] [<c12f5fbf>] schedule+0x26f/0x460
[ 0.465178] [<c12eed9d>] ? kmemleak_free+0x2d/0x70
[ 0.465178] [<c1023777>] ? release_task+0x217/0x360
[ 0.465178] [<c102356b>] ? release_task+0xb/0x360
[ 0.465178] [<c104796e>] ? debug_check_no_locks_held+0x1e/0x90
[ 0.465178] [<c1024ec0>] do_exit+0x460/0x660
[ 0.465178] [<c102301a>] ? kmsg_dump+0x10a/0x120
[ 0.465178] [<c100562e>] oops_end+0x6e/0x90
[ 0.465178] [<c100579f>] die+0x4f/0x70
[ 0.465178] [<c1003136>] do_trap+0x96/0xd0
[ 0.465178] [<c1003170>] ? do_divide_error+0x0/0xa0
[ 0.465178] [<c10031f3>] do_divide_error+0x83/0xa0
[ 0.465178] [<c1042a73>] ? clocks_calc_mult_shift+0xb3/0xf0
[ 0.465178] [<c1046055>] ? __lock_acquire.clone.16+0x2f5/0xad0
[ 0.465178] [<c1046055>] ? __lock_acquire.clone.16+0x2f5/0xad0
[ 0.465178] [<c104c54b>] ? __module_text_address+0xb/0x50
[ 0.465178] [<c104fab8>] ? is_module_text_address+0x8/0x10
[ 0.465178] [<c10362b7>] ? __kernel_text_address+0x37/0x60
[ 0.465178] [<c12f8714>] error_code+0x58/0x60
[ 0.465178] [<c12f007b>] ? pci_read_bridge_bases+0x1d9/0x404
[ 0.465178] [<c1003170>] ? do_divide_error+0x0/0xa0
[ 0.465178] [<c1042a73>] ? clocks_calc_mult_shift+0xb3/0xf0
[ 0.465178] [<c1042aeb>] __clocksource_updatefreq_scale+0x3b/0x60
[ 0.465178] [<c1042b1b>] __clocksource_register_scale+0xb/0x40
[ 0.465178] [<c10074f5>] tsc_refine_calibration_work+0x85/0x2a0
[ 0.465178] [<c1034580>] ? process_one_work+0xe0/0x390
[ 0.465178] [<c10345eb>] process_one_work+0x14b/0x390
[ 0.465178] [<c1034580>] ? process_one_work+0xe0/0x390
[ 0.465178] [<c101cdff>] ? wake_up_process+0xf/0x20
[ 0.465178] [<c1007470>] ? tsc_refine_calibration_work+0x0/0x2a0
[ 0.465178] [<c103536e>] worker_thread+0x10e/0x2a0
[ 0.465178] [<c1035260>] ? worker_thread+0x0/0x2a0
[ 0.465178] [<c1038884>] kthread+0x74/0x80
[ 0.465178] [<c1038810>] ? kthread+0x0/0x80
[ 0.465178] [<c1003096>] kernel_thread_helper+0x6/0x10
[ 0.465178] Code: e5 2f c1 31 d2 e8 37 58 fe ff 0f ba 25 04 bf 2f c1 00 19 c0 8b 45 c8 c9 c3 90 8d b4 26 00 00 00 00 55 8b 80 38 01 00 00 89 e5 5d <8b> 40 fc c3 66 90 55 ba c8 59 3a c1 89 e5 57 56 53 8b 3d d0 28
[ 0.465178] EIP: [<c10389aa>] kthread_data+0xa/0x10 SS:ESP 0068:c78e3c80
[ 0.465178] CR2: 00000000fffffffc
[ 0.465178] ---[ end trace 6d450e935ee1897d ]---
[ 0.465178] Fixing recursive fault but reboot is needed!
--
Kirill A. Shutemov
View attachment ".config" of type "text/plain" (35597 bytes)
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