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Date: Wed, 04 Apr 2007 01:31:15 +0200
From: Michal Piotrowski <michal.k.k.piotrowski@...il.com>
To: Con Kolivas <kernel@...ivas.org>
CC: Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
Dmitry Adamushko <dmitry.adamushko@...il.com>
Subject: Re: 2.6.21-rc5-mm4
Con Kolivas napisał(a):
> On Wednesday 04 April 2007 08:20, Michal Piotrowski wrote:
>> Michal Piotrowski napisał(a):
>>> http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.21-rc5-mm4/m
>>> m-oops
>>> http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.21-rc5-mm4/m
>>> m-config
>> Sorry for a delay.
>
> Never apologise!
>
> (I'm trying hard to stay offline for my own health so I may have huge delays).
>
>> Con, I think that your
>> sched-implement-staircase-deadline-cpu-scheduler-staircase-improvements.pat
>> ch is causing this oops.
>
> Thanks for heads up!
>
> Try this patch please?
I still get the same oops.
BUG: unable to handle kernel paging request at virtual address 0743c798
printing eip:
c011d80a
*pde = 00000000
Oops: 0000 [#1]
PREEMPT SMP
last sysfs file: devices/platform/w83627hf.656/temp2_input
Modules linked in: ipt_MASQUERADE iptable_nat nf_nat nfsd exportfs lockd nfs_acl autofs4 sunrpc af_packet nf_conntrack_netbios_ns ipt_REJECT nf_conntrack_ipv4 xt_state nf_conntrack nfnetlink iptable_filter ip_tables ip6t_REJECT xt_tcpudp ip6table_filter ip6_tables x_tables ipv6 binfmt_misc thermal processor fan container nvram snd_intel8x0 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc evdev i2c_i801 intel_agp agpgart ide_cd cdrom rtc unix
CPU: 0
EIP: 0060:[<c011d80a>] Not tainted VLI
EFLAGS: 00210006 (2.6.21-rc5-mm4 #15)
EIP is at recalc_task_prio+0xc0/0x162
l *0xc011d80a
0xc011d80a is in recalc_task_prio (/mnt/md0/devel/linux-mm/kernel/sched.c:722).
717 * a queued better static_prio's prio_level.
718 */
719 if (p->static_prio < rq->best_static_prio) {
720 search_prio = MAX_RT_PRIO;
721 if (likely(p->policy != SCHED_BATCH))
722 rq->best_static_prio = p->static_prio;
723 } else if (p->static_prio == rq->best_static_prio)
724 search_prio = rq->prio_level[uprio];
725 else {
726 search_prio = max(rq->prio_level[uprio],
eax: 1000008b ebx: 10000027 ecx: 0000008b edx: c743c27c
esi: cc33d510 edi: c743bda0 ebp: ce4a9ec0 esp: ce4a9e98
ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
Process operapluginwrap (pid: 3559, ti=ce4a8000 task=ce006ac0 task.ti=ce4a8000)
Stack: 00000000 c743c27c 00000001 c011defe c01240b5 c04eac14 ce4a9ed0 cc33d510
c743bda0 cc33d510 ce4a9ed0 c011d9f1 00000001 cc33d510 ce4a9f00 c011f2ef
00000000 c052cda0 ce4a9f00 c743bda0 c8ada023 00000029 cc33d510 003d0f00
Call Trace:
[<c011d9f1>] enqueue_task+0x31/0x7d
[<c011f2ef>] activate_task+0xba/0xce
[<c01223bb>] wake_up_new_task+0x65/0x125
[<c01243d5>] do_fork+0x10f/0x181
[<c010223f>] sys_clone+0x33/0x39
[<c010424c>] syscall_call+0x7/0xb
[<4cefd258>] 0x4cefd258
=======================
INFO: lockdep is turned off.
Code: 7d 29 31 d2 83 7e 5c 03 0f 95 c2 b8 74 4c 4a c0 e8 04 e4 0f 00 c7 45 e0 64 00 00 00 85 c0 74 23 8b 46 1c 89 87 fc 09 00 00 eb 18 <8b> 94 9f 5c 09 00 00 74 0c 8b 84 8f cc 07 00 00 39 d0 0f 4d d0
EIP: [<c011d80a>] recalc_task_prio+0xc0/0x162 SS:ESP 0068:ce4a9e98
BUG: NMI Watchdog detected LOCKUP on CPU0, eip c021ad9a, registers:
Modules linked in: ipt_MASQUERADE iptable_nat nf_nat nfsd exportfs lockd nfs_acl autofs4 sunrpc af_packet nf_conntrack_netbios_ns ipt_REJECT nf_conntrack_ipv4 xt_state nf_conntrack nfnetlink iptable_filter ip_tables ip6t_REJECT xt_tcpudp ip6table_filter ip6_tables x_tables ipv6 binfmt_misc thermal processor fan container nvram snd_intel8x0 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc evdev i2c_i801 intel_agp agpgart ide_cd cdrom rtc unix
CPU: 0
EIP: 0060:[<c021ad9a>] Not tainted VLI
EFLAGS: 00200006 (2.6.21-rc5-mm4 #15)
EIP is at _raw_spin_lock+0xb5/0x128
l *0xc021ad9a
0xc021ad9a is in _raw_spin_lock (/mnt/md0/devel/linux-mm/lib/spinlock_debug.c:109).
104 u64 loops = loops_per_jiffy * HZ;
105 int print_once = 1;
106
107 for (;;) {
108 for (i = 0; i < loops; i++) {
109 if (__raw_spin_trylock(&lock->raw_lock))
110 return;
111 __delay(1);
112 }
113 /* lockup suspected: */
eax: 00000000 ebx: c743bda0 ecx: 88044b58 edx: 00000078
esi: 01f2bd6f edi: 00000001 ebp: ce4a9c88 esp: ce4a9c60
ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
Process operapluginwrap (pid: 3559, ti=ce4a8000 task=ce006ac0 task.ti=ce4a8000)
Stack: 00000000 00000002 00000001 c011defe 000f4240 000026ec a6ca8450 c743bda0
c743bda0 ce4a9d18 ce4a9ca8 c034f47e 00000000 00000002 c011defe c0140275
c0852720 c052cda0 ce4a9cc8 c011defe c0852720 000f4240 c9855510 c9799f00
Call Trace:
[<c034f47e>] _spin_lock+0x3c/0x42
[<c011defe>] task_rq_lock+0x36/0x70
[<c011f31d>] try_to_wake_up+0x1a/0x36b
[<c011f67c>] default_wake_function+0xe/0x10
[<c0136f8a>] autoremove_wake_function+0x17/0x3a
[<c011c773>] __wake_up_common+0x32/0x55
[<c011d62b>] __wake_up+0x31/0x42
[<c012541f>] wake_up_klogd+0x36/0x38
[<c020e34a>] bust_spinlocks+0x2a/0x2c
[<c01058bd>] die+0x16c/0x22c
[<c011b9ed>] do_page_fault+0x47c/0x55b
[<c034fdb1>] error_code+0x79/0x80
[<c011d80a>] recalc_task_prio+0xc0/0x162
[<c011d9f1>] enqueue_task+0x31/0x7d
[<c011f2ef>] activate_task+0xba/0xce
[<c01223bb>] wake_up_new_task+0x65/0x125
[<c01243d5>] do_fork+0x10f/0x181
[<c010223f>] sys_clone+0x33/0x39
[<c010424c>] syscall_call+0x7/0xb
[<4cefd258>] 0x4cefd258
=======================
INFO: lockdep is turned off.
Code: 9e c2 b8 38 16 4c c0 e8 7d 0e 00 00 85 c0 74 74 69 05 88 07 4a c0 e8 03 00 00 89 45 f0 bf 01 00 00 00 31 f6 eb 13 31 c0 86 03 46 <84> c0 7f 55 b8 01 00 00 00 e8 e8 20 ff ff 3b 75 f0 75 e8 85 ff
serial console log
http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.21-rc5-mm4/mm-oops2
BTW. I want to do some scheduler benchmarks tomorrow.
Do sched-implement-staircase-deadline-cpu-scheduler-staircase-improvements.patch
is really important for staircase scheduler performance?
Regards,
Michal
--
Michal K. K. Piotrowski
LTG - Linux Testers Group (PL)
(http://www.stardust.webpages.pl/ltg/)
LTG - Linux Testers Group (EN)
(http://www.stardust.webpages.pl/linux_testers_group_en/)
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