-----Original message-----
From:	Bill Maidment <[log in to unmask]>
Sent:	Fri 13-01-2012 10:48
Subject:	kernel panic with 2.6.32-220.2.1
To:	[log in to unmask]; 
> Good Morning all from Australia
> I have a problem when upgrading to the newest 64bit kernel. After it runs for a 
> couple of minutes I get a kernel panic (see below). The previous 
> kernel-2.6.32-131.21.1 reported the nouveau scaling lines but does not kernel 
> panic.
> Has anyone else seen anything like this? Could this indicate a hardware error?
> Any help would be appreciated.
> 
> Jan 13 10:20:39 charlton kernel: [drm] nouveau 0000:05:00.0: No native mode, 
> forcing panel scaling
> Jan 13 10:20:49 charlton kernel: [drm] nouveau 0000:05:00.0: No native mode, 
> forcing panel scaling
> Jan 13 10:20:49 charlton kernel: [drm:drm_crtc_helper_set_config] *ERROR* 
> failed to set mode on [CRTC:5]
> Jan 13 10:20:50 charlton kernel: irq 18: nobody cared (try booting with the 
> "irqpoll" option)
> Jan 13 10:20:50 charlton kernel: Pid: 0, comm: swapper Tainted: G        W  
> ----------------   2.6.32-220.2.1.el6.x86_64 #1
> Jan 13 10:20:50 charlton kernel: Call Trace:
> Jan 13 10:20:50 charlton kernel: <IRQ>  [<ffffffff810db29b>] ? 
> __report_bad_irq+0x2b/0xa0
> Jan 13 10:20:50 charlton kernel: [<ffffffff810db49c>] ? 
> note_interrupt+0x18c/0x1d0
> Jan 13 10:20:50 charlton kernel: [<ffffffff810dbbbd>] ? 
> handle_fasteoi_irq+0xcd/0xf0
> Jan 13 10:20:50 charlton kernel: [<ffffffff8100df09>] ? handle_irq+0x49/0xa0
> Jan 13 10:20:50 charlton kernel: [<ffffffff814f4dcc>] ? do_IRQ+0x6c/0xf0
> Jan 13 10:20:50 charlton kernel: [<ffffffff8100ba53>] ? ret_from_intr+0x0/0x11
> Jan 13 10:20:50 charlton kernel: <EOI>  [<ffffffff8103756b>] ? 
> native_safe_halt+0xb/0x10
> Jan 13 10:20:50 charlton kernel: [<ffffffff810145dd>] ? default_idle+0x4d/0xb0
> Jan 13 10:20:50 charlton kernel: [<ffffffff810146dd>] ? c1e_idle+0x9d/0x120
> Jan 13 10:20:50 charlton kernel: [<ffffffff81009e06>] ? cpu_idle+0xb6/0x110
> Jan 13 10:20:50 charlton kernel: [<ffffffff814e5fbb>] ? 
> start_secondary+0x202/0x245
> Jan 13 10:20:50 charlton kernel: handlers:
> Jan 13 10:20:50 charlton kernel: [<ffffffff8139b590>] (usb_hcd_irq+0x0/0x90)
> Jan 13 10:20:50 charlton kernel: [<ffffffff8139b590>] (usb_hcd_irq+0x0/0x90)
> Jan 13 10:20:50 charlton kernel: [<ffffffff8139b590>] (usb_hcd_irq+0x0/0x90)
> Jan 13 10:20:50 charlton kernel: [<ffffffff8139b590>] (usb_hcd_irq+0x0/0x90)
> Jan 13 10:20:50 charlton kernel: [<ffffffffa00de140>] 
> (nouveau_irq_handler+0x0/0x140 [nouveau])
> Jan 13 10:20:50 charlton kernel: Disabling IRQ #18
> 
> 
> Cheers
> Bill Maidment
> IT Consultant to Elgas Ltd
> Phone: 02 4294 3649
> 
> 

I suppressed the nouveau scaling lines with boot parameter drm_kms_helper.poll=0
but now I get a warning message:

------------[ cut here ]------------
WARNING: at kernel/sched.c:5914 thread_return+0x232/0x79d() (Not tainted)
Hardware name: System Product Name
Modules linked in: ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle iptable_filter ip_tables nfsd lockd nfs_acl auth_rpcgss exportfs autofs4 sunrpc cpufreq_ondemand powernow_k8 freq_table mperf bridge stp llc ipv6 dm_mirror dm_region_hash dm_log vhost_net macvtap macvlan tun kvm_amd kvm asus_atk0110 r8169 8139too 8139cp mii microcode k10temp edac_core edac_mce_amd shpchp sg snd_hda_codec_via snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc i2c_piix4 xhci_hcd ext4 mbcache jbd2 raid1 sd_mod crc_t10dif sr_mod cdrom pata_atiixp ahci ata_generic pata_acpi pata_jmicron usb_storage nouveau ttm drm_kms_helper drm i2c_algo_bit i2c_core mxm_wmi wmi video output dm_mod [last unloaded: scsi_wait_scan]
Pid: 2375, comm: qemu-kvm Not tainted 2.6.32-220.2.1.el6.x86_64 #1
Call Trace:
 [<ffffffff81069997>] ? warn_slowpath_common+0x87/0xc0
 [<ffffffff810699ea>] ? warn_slowpath_null+0x1a/0x20
 [<ffffffff814eccc5>] ? thread_return+0x232/0x79d
 [<ffffffff810958e3>] ? __hrtimer_start_range_ns+0x1a3/0x460
 [<ffffffff81094dc1>] ? lock_hrtimer_base+0x31/0x60
 [<ffffffff814ee498>] ? schedule_hrtimeout_range+0xc8/0x160
 [<ffffffff81094b70>] ? hrtimer_wakeup+0x0/0x30
 [<ffffffff81095bd4>] ? hrtimer_start_range_ns+0x14/0x20
 [<ffffffff8118b079>] ? poll_schedule_timeout+0x39/0x60
 [<ffffffff8118b6e8>] ? do_select+0x578/0x6b0
 [<ffffffff8118b820>] ? __pollwait+0x0/0xf0
 [<ffffffff8118b910>] ? pollwake+0x0/0x60
 [<ffffffff8118b910>] ? pollwake+0x0/0x60
 [<ffffffff8118b910>] ? pollwake+0x0/0x60
 [<ffffffff8118b910>] ? pollwake+0x0/0x60
 [<ffffffff8118b910>] ? pollwake+0x0/0x60
 [<ffffffff8118b910>] ? pollwake+0x0/0x60
 [<ffffffff8118b910>] ? pollwake+0x0/0x60
 [<ffffffff8118b910>] ? pollwake+0x0/0x60
 [<ffffffff8118b910>] ? pollwake+0x0/0x60
 [<ffffffff8118c30a>] ? core_sys_select+0x18a/0x2c0
 [<ffffffff810958e3>] ? __hrtimer_start_range_ns+0x1a3/0x460
 [<ffffffff81090a10>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff81012b59>] ? read_tsc+0x9/0x20
 [<ffffffff8109b629>] ? ktime_get_ts+0xa9/0xe0
 [<ffffffff81012b59>] ? read_tsc+0x9/0x20
 [<ffffffff8109b629>] ? ktime_get_ts+0xa9/0xe0
 [<ffffffff8118c697>] ? sys_select+0x47/0x110
 [<ffffffff8100b0f2>] ? system_call_fastpath+0x16/0x1b
---[ end trace c440723fb9745c91 ]---



Cheers
Bill Maidment
IT Consultant to Elgas Ltd
Phone: 02 4294 3649