Re: mmotm 2009年09月09日-22-56 uploaded
From: David Rientjes
Date: Tue Sep 15 2009 - 18:40:19 EST
On 2009年9月15日, Suresh Jayaram wrote:
>
> [ I notice Thomas has since provided patches for this problem, so I'll
>
> check if it solves this issue on T60p. ]
>
>
Thomas' patches in timers/core do fix this issue, so no revert will be
necessary in linux-next when the next -mm is released.
>
Sep 15 15:29:36 jay-t60p kernel: BUG: unable to handle kernel NULL
>
pointer dereference at (null)
>
Sep 15 15:29:36 jay-t60p kernel: IP: [<ffffffff81178954>]
>
bitmap_scnprintf+0x5a/0xae
>
Sep 15 15:29:36 jay-t60p kernel: PGD 0
>
Sep 15 15:29:36 jay-t60p kernel: Oops: 0000 [#1] SMP
>
Sep 15 15:29:36 jay-t60p kernel: last sysfs file:
>
/sys/devices/pci0000:00/0000:00:01.0/local_cpus
>
Sep 15 15:29:36 jay-t60p kernel: CPU 1
>
Sep 15 15:29:36 jay-t60p kernel: Modules linked in: bnep sco nfsd
>
exportfs rfcomm l2cap crc16 snd_pcm_oss snd_mixer_oss snd_seq
>
binfmt_misc snd_seq_device nfs lockd nfs_acl auth_rpcgss sunrpc ipv6
>
cpufreq_conservative cpufreq_userspace cpufreq_powersave acpi_cpufreq
>
ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack
>
nf_defrag_ipv4 ip_tables x_tables bridge stp tun fuse loop dm_mod
>
snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep rtc_cmos
>
pcmcia btusb snd_pcm snd_timer snd ppdev thinkpad_acpi rtc_core
>
i2c_i801 yenta_socket iTCO_wdt nsc_ircc usbhid ide_cd_mod video
>
rsrc_nonstatic pl2303 bluetooth hid soundcore parport_pc led_class
>
output rtc_lib ac battery button intel_agp i2c_core pcmcia_core pcspkr
>
usbserial iTCO_vendor_support irda e1000e cdrom snd_page_alloc parport
>
sg rfkill joydev uinput crc_ccitt uhci_hcd ehci_hcd sd_mod crc_t10dif
>
usbcore edd ext3 mbcache jbd fan ide_pci_generic ata_generic ata_piix
>
pata_acpi ahci libata scsi_mod piix ide_core thermal processor
>
thermal_sys hwmon
>
Sep 15 15:29:36 jay-t60p kernel: Pid: 2478, comm: irqbalance Not
>
tainted 2.6.31-rc9-mm1-0.1-default #7 20088JQ
>
Sep 15 15:29:36 jay-t60p kernel: RIP: 0010:[<ffffffff81178954>]
>
[<ffffffff81178954>] bitmap_scnprintf+0x5a/0xae
>
Sep 15 15:29:36 jay-t60p kernel: RSP: 0018:ffff880037a81e38 EFLAGS: 00010246
>
Sep 15 15:29:36 jay-t60p kernel: RAX: 0000000000000000 RBX:
>
0000000000000000 RCX: 0000000000000000
>
Sep 15 15:29:36 jay-t60p kernel: RDX: 0000000000000002 RSI:
>
0000000000000ffe RDI: 0000000000000000
>
Sep 15 15:29:36 jay-t60p kernel: RBP: ffff880037a81e68 R08:
>
0000000000000005 R09: 0000000000000001
>
Sep 15 15:29:36 jay-t60p kernel: R10: ffffffff813c1cd3 R11:
>
0000000000000001 R12: 0000000000000000
>
Sep 15 15:29:36 jay-t60p kernel: R13: 0000000000000000 R14:
>
0000000000000ffe R15: ffff88007bbe3000
>
Sep 15 15:29:36 jay-t60p kernel: FS: 00007f605bee46f0(0000)
>
GS:ffff880005f00000(0000) knlGS:0000000000000000
>
Sep 15 15:29:36 jay-t60p kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
>
000000008005003b
>
Sep 15 15:29:36 jay-t60p kernel: CR2: 0000000000000000 CR3:
>
000000007acf8000 CR4: 00000000000006e0
>
Sep 15 15:29:36 jay-t60p kernel: DR0: 0000000000000000 DR1:
>
0000000000000000 DR2: 0000000000000000
>
Sep 15 15:29:36 jay-t60p kernel: DR3: 0000000000000000 DR6:
>
00000000ffff0ff0 DR7: 0000000000000400
>
Sep 15 15:29:36 jay-t60p kernel: Process irqbalance (pid: 2478,
>
threadinfo ffff880037a80000, task ffff8800376d8280)
>
Sep 15 15:29:37 jay-t60p rpc.statd[2588]: statd running as root. chown
>
/var/lib/nfs/sm to choose different user
>
Sep 15 15:29:37 jay-t60p sm-notify[2596]: Already notifying clients; Exiting!
>
Sep 15 15:29:36 jay-t60p modem-manager: Loaded plugin MBM
>
Sep 15 15:29:36 jay-t60p kernel: Stack:
>
Sep 15 15:29:37 jay-t60p kernel: ffffffff8152b7d0 ffff88007bbe3000
>
ffffffff8154a6a8 ffff88007c7aa2d8
>
Sep 15 15:29:37 jay-t60p kernel: <0> ffffffff81556620 ffff880037a81f48
>
ffff880037a81e88 ffffffff81186937
>
Sep 15 15:29:37 jay-t60p kernel: <0> ffff88007c7aa2d8 fffffffffffffffb
>
ffff880037a81ea8 ffffffff811fbff6
>
Sep 15 15:29:37 jay-t60p kernel: Call Trace:
>
Sep 15 15:29:37 jay-t60p kernel: [<ffffffff81186937>] local_cpus_show+0x36/0x49
>
Sep 15 15:29:37 jay-t60p kernel: [<ffffffff811fbff6>] dev_attr_show+0x20/0x44
>
Sep 15 15:29:37 jay-t60p kernel: [<ffffffff81121741>]
>
sysfs_read_file+0xb2/0x131
>
Sep 15 15:29:37 jay-t60p kernel: [<ffffffff810ce07c>] vfs_read+0xb1/0x187
>
Sep 15 15:29:37 jay-t60p kernel: [<ffffffff810ce216>] sys_read+0x47/0x70
>
Sep 15 15:29:37 jay-t60p modem-manager: Loaded plugin Sierra
>
Sep 15 15:29:37 jay-t60p kernel: [<ffffffff8100b9eb>]
>
system_call_fastpath+0x16/0x1b
Looks like a bootstrap issue since is appears as though `local_cpus' is
being read by some initscript on your T60p and mine doesn't suffer from
the same problem (it isn't read at all on mine).
CONFIG_DEBUG_PER_CPU_MAPS should be able to diagnose it when you get back
from traveling.
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