linux-kernel - [2.6.27-rc1] Oops in sched_power_savings

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Message-ID: <20080805115447.5e9d77f0@tux.DEF.witbe.net>
Date:	Tue, 5 Aug 2008 11:54:47 +0200
From:	Paul Rolland <rol@...917.net>
To:	linux-kernel@...r.kernel.org
Cc:	rol@...be.net
Subject: [2.6.27-rc1] Oops in sched_power_savings_store

Hello,

I've booted a 2.6.27-rc1 this morning, and I got the following Oops. Previously,
this machine was running an FC8 -2.6.25.9-40 kernel, without problem.

Attached is the config used. The machine is a Dell Inspiron 6400.


BUG: unable to handle kernel NULL pointer dereference at 0000000000000002
IP: [<ffffffff8102ee19>] sched_power_savings_store+0x13/0x55
PGD 6811c067 PUD 5842c067 PMD 0 
Oops: 0000 [1] SMP 
CPU 0 
Modules linked in: i915 drm autofs4 coretemp hwmon fuse nf_conntrack_ipv4 ipt_RE
JECT iptable_filter ip_tables nf_conntrack_ipv6 xt_state nf_conntrack xt_tcpudp 
ip6t_ipv6header ip6t_REJECT ip6table_filter ip6_tables x_tables cpufreq_ondemand
 acpi_cpufreq freq_table dm_mirror dm_log dm_multipath dm_mod ipv6 snd_hda_intel
 snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq arc4 snd_seq_device ecb sn
d_pcm_oss hso snd_mixer_oss snd_pcm crypto_blkcipher iwl3945 snd_timer snd_page_
alloc mac80211 rfkill snd_hwdep iTCO_wdt sr_mod i2c_i801 b44 i2c_core firewire_o
hci video button ssb usb_storage iTCO_vendor_support firewire_core crc_itu_t wmi
 snd cfg80211 mii output battery ac cdrom sg joydev dcdbas soundcore ata_generic
 ata_piix pata_acpi libata sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd eh
ci_hcd [last unloaded: pcspkr]
Pid: 3179, comm: sched-powersave Not tainted 2.6.27-rc1 #1
RIP: 0010:[<ffffffff8102ee19>]  [<ffffffff8102ee19>] sched_power_savings_store+0
x13/0x55
RSP: 0018:ffff880058473e88  EFLAGS: 00010296
RAX: fffffffffffffffb RBX: 0000000000000002 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffffffffffea RDI: 0000000000000002
RBP: ffff880058473e98 R08: ffffffff8102ee71 R09: ffff88006814e000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff880065093a80
R13: ffff88007f321730 R14: 00000000ffffffed R15: ffffffff81402a28
FS:  00007f4cddfe66f0(0000) GS:ffffffff81433a00(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000002 CR3: 0000000058421000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process sched-powersave (pid: 3179, threadinfo ffff880058472000, task ffff880058
449640)
Stack:  ffff88005a6a7540 ffffffff814023f0 ffff880058473ea8 ffffffff8102ee82
 ffff880058473eb8 ffffffff811aeabf ffff880058473f08 ffffffff810edd56
 ffff880058473f48 ffff880065093aa0 ffffffff814023f0 ffff88005a6a7540
Call Trace:
 [<ffffffff8102ee82>] sched_mc_power_savings_store+0x11/0x13
 [<ffffffff811aeabf>] sysdev_class_store+0x24/0x26
 [<ffffffff810edd56>] sysfs_write_file+0xe0/0x11c
 [<ffffffff810a49c8>] vfs_write+0xae/0x157
 [<ffffffff810a4ed6>] sys_write+0x47/0x6f
 [<ffffffff8100befb>] system_call_fastpath+0x16/0x1b


Code: c3 55 48 89 e5 e8 bf 7b 00 00 e8 f8 53 03 00 e8 01 7c 00 00 c9 31 c0 c3 55
 48 89 e5 53 48 89 f3 48 c7 c6 ea ff ff ff 48 83 ec 08 <8a> 0f 8d 41 d0 3c 01 77
 31 85 d2 74 10 31 c0 80 f9 31 0f 94 c0 
RIP  [<ffffffff8102ee19>] sched_power_savings_store+0x13/0x55
 RSP <ffff880058473e88>
CR2: 0000000000000002
---[ end trace 31382a2ba39cd029 ]---

Regards,
Paul

-- 
Paul Rolland                                E-Mail : rol(at)witbe.net
CTO - Witbe.net SA                          Tel. +33 (0)1 47 67 77 77
Les Collines de l'Arche                     Fax. +33 (0)1 47 67 77 99
F-92057 Paris La Defense                    RIPE : PR12-RIPE

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Download attachment "config-2.6.27-rc1" of type "application/octet-stream" (81157 bytes)