Hi maks,

> hmm could you try 2.6.27-rc4 snapshots [1] or 2.6.26-4, which should
> be available tomorrow on sid.

OK, here's what we get with linux-image-2.6.26-1-686_2.6.26-4_i386:

[ 2755.511915] BUG: unable to handle kernel <1>BUG: unable to handle kernel 
paging request at 00003022
[ 2755.512088] IP: [<00003022>]
[ 2755.512144] *pde = 00000000 
[ 2755.512210] Oops: 0000 [#1] SMP 
[ 2755.512274] Modules linked in: netconsole configfs i915 drm rfcomm l2cap 
bluetooth ppdev lp ipv6 acpi_cpufreq cpufreq_powersave cpufreq_stats 
cpufreq_conservative cpufreq_userspace cpufreq_ondemand freq_table coretemp 
loop joydev arc4 ecb crypto_blkcipher snd_hda_intel iwl3945 pcmcia snd_pcm_oss 
snd_mixer_oss firmware_class snd_pcm mac80211 snd_timer led_class serio_raw snd 
yenta_socket parport_pc parport pcspkr tpm_infineon tpm tpm_bios psmouse 
rsrc_nonstatic pcmcia_core iTCO_wdt cfg80211 soundcore snd_page_alloc wmi video 
output container intel_agp agpgart battery ac button evdev ext3 jbd mbcache 
sd_mod ide_cd_mod cdrom ata_generic ide_pci_generic ohci1394 ahci ieee1394 piix 
ide_core libata scsi_mod dock tg3 ehci_hcd uhci_hcd usbcore thermal processor 
fan thermal_sys
[ 2755.514117] 
[ 2755.514150] Pid: 0, comm: swapper Not tainted (2.6.26-1-686 #1)
[ 2755.514250] EIP: 0000:[<00000c31>] EFLAGS: 00000800 CPU: 1
[ 2755.514354] EIP is at 0xc31
[ 2755.514406] EAX: f74c9e90 EBX: 00000000 ECX: f74c9ea4 EDX: 00000001
[ 2755.514513] ESI: c280ee00 EDI: c2804e50 EBP: 00202dbd ESP: f74c9e00
[ 2755.514619]  DS: 0000 ES: ee4c FS: 0000 GS: 0000 SS: 0068
[ 2755.514710] Process swapper (pid: 0, ti=f74c8000 task=f7471520 
task.ti=f7474000)
[ 2755.514833] Stack: 00000000 00000000 00000000 00000000 00000000 00000000 
00000001 00000000 
[ 2755.515052]        00000000 ffffffff 00000000 00000000 00000000 00000c31 
00000000 ffffffff 
[ 2755.515263]        00000000 00000c31 f74bf9c0 c02c3dc0 f74c9ea8 ffffffff 
c280ee00 f74bf9c0 
[ 2755.515480] Call Trace:
[ 2755.515564]  [<c02b7973>] schedule+0x1d9/0x66f
[ 2755.515667]  [<c0129950>] lock_timer_base+0x19/0x35
[ 2755.515776]  [<c02b8001>] schedule_timeout+0x6b/0x86
[ 2755.515878]  [<c012968c>] process_timeout+0x0/0x5
[ 2755.515878]  [<c02b7ffc>] schedule_timeout+0x66/0x86
[ 2755.515878]  [<c0208505>] acpi_ex_system_do_suspend+0x14/0x1e
[ 2755.515878]  [<c020061a>] acpi_ds_exec_end_op+0xc5/0x3af
[ 2755.515878]  [<c020e91a>] acpi_ps_parse_loop+0x5c2/0x774
[ 2755.515878]  [<c0213884>] acpi_ut_create_generic_state+0x31/0x4a
[ 2755.515878]  [<c020dd89>] acpi_ps_parse_aml+0x5f/0x26b
[ 2755.515878]  [<c020efbb>] acpi_ps_execute_method+0x100/0x19d
[ 2755.515878]  [<c020c448>] acpi_ns_evaluate+0x90/0xe4
[ 2755.548819]  [<c0204867>] acpi_ev_asynch_execute_gpe_method+0xaf/0xf6
[ 2755.552360]  [<c01fe611>] acpi_os_execute_deferred+0x0/0x25
[ 2755.552360]  [<c01fe62e>] acpi_os_execute_deferred+0x1d/0x25
[ 2755.552360]  [<c012edee>] run_workqueue+0x74/0xf2
[ 2755.552360]  [<c012f4c9>] worker_thread+0x0/0xbd
[ 2755.552360]  [<c012f57c>] worker_thread+0xb3/0xbd
[ 2755.552360]  [<c013177c>] autoremove_wake_function+0x0/0x2d
[ 2755.552360]  [<c01316bb>] kthread+0x38/0x5d
[ 2755.552360]  [<c0131683>] kthread+0x0/0x5d
[ 2755.552360]  [<c01044f3>] kernel_thread_helper+0x7/0x10
[ 2755.552360]  =======================
[ 2755.552360] Code:  Bad EIP value.
[ 2755.552360] EIP: [<00000c31>] 0xc31 SS:ESP 0068:f74c9e00
[ 2755.552360] ---[ end trace 0503a1125104089a ]---
[ 2755.597570] bad: scheduling from the idle thread!
[ 2755.633788] Pid: 0, comm: swapper Tainted: G      D   2.6.26-1-686 #1
[ 2755.637418]  [<c011ec30>] dequeue_task_idle+0x1f/0x28
[ 2755.641365]  [<c01180cf>] dequeue_task+0xa/0x14
[ 2755.645311]  [<c01180f4>] deactivate_task+0x1b/0x30
[ 2755.649258]  [<c012f4c9>] worker_thread+0x0/0xbd
[ 2755.649258]  [<c02b78bb>] schedule+0x121/0x66f
[ 2755.653131]  [<c012007b>] select_nohz_load_balancer+0x11/0xe1
[ 2755.656021]  [<c01228cc>] release_console_sem+0x173/0x18c
[ 2755.658898]  [<c0131887>] prepare_to_wait+0x12/0x49
[ 2755.661605]  [<c012f4c9>] worker_thread+0x0/0xbd
[ 2755.665058]  [<c012f54f>] worker_thread+0x86/0xbd
[ 2755.669004]  [<c013177c>] autoremove_wake_function+0x0/0x2d
[ 2755.669004]  [<c01316bb>] kthread+0x38/0x5d
[ 2755.672281]  [<c0131683>] kthread+0x0/0x5d
[ 2755.674904]  [<c01044f3>] kernel_thread_helper+0x7/0x10
[ 2755.677465]  =======================
[ 2755.680843] bad: scheduling from the idle thread!
[ 2755.684770] Pid: 0, comm: swapper Tainted: G      D   2.6.26-1-686 #1
[ 2755.684770]  [<c011ec30>] dequeue_task_idle+0x1f/0x28
[ 2755.687497]  [<c01180cf>] dequeue_task+0xa/0x14
[ 2755.690010]  [<c01180f4>] deactivate_task+0x1b/0x30
[ 2755.692650]  [<c012f4c9>] worker_thread+0x0/0xbd
[ 2755.696598]  [<c02b78bb>] schedule+0x121/0x66f
[ 2755.696598]  [<c012007b>] select_nohz_load_balancer+0x11/0xe1
[ 2755.699747]  [<c01228cc>] release_console_sem+0x173/0x18c
[ 2755.702219]  [<c0131887>] prepare_to_wait+0x12/0x49
[ 2755.704748]  [<c012f4c9>] worker_thread+0x0/0xbd
[ 2755.708437]  [<c012f54f>] worker_thread+0x86/0xbd
[ 2755.708437]  [<c013177c>] autoremove_wake_function+0x0/0x2d
[ 2755.711952]  [<c01316bb>] kthread+0x38/0x5d
[ 2755.714400]  [<c0131683>] kthread+0x0/0x5d
[ 2755.716885]  [<c01044f3>] kernel_thread_helper+0x7/0x10
[ 2755.720273]  =======================
[ 2755.720273] bad: scheduling from the idle thread!
[ 2755.726413] Pid: 0, comm: swapper Tainted: G      D   2.6.26-1-686 #1
[2478111854.944041] bad: scheduling from the idle thread!
[ 2755.726413]  [<c011ec30>] dequeue_task_idle+0x1f/0x28
[ 2755.726413]  [<c01180cf>] dequeue_task+0xa/0x14
[ 2755.726413]  [<c01180f4>] deactivate_task+0x1b/0x30
[ 2755.726413]  [<c012f4c9>] worker_thread+0x0/0xbd
[ 2755.726413]  [<c02b78bb>] schedule+0x121/0x66f
[ 2755.726413]  [<c012007b>] select_nohz_load_balancer+0x11/0xe1
[ 2755.726413]  [<c01228cc>] release_console_sem+0x173/0x18c
[ 2755.726413]  [<c0131887>] prepare_to_wait+0x12/0x49
[ 2755.726413]  [<c012f4c9>] worker_thread+0x0/0xbd
[ 2755.726413]  [<c012f54f>] worker_thread+0x86/0xbd
[ 2755.726413]  [<c013177c>] autoremove_wake_function+0x0/0x2d
[ 2755.726413]  [<c01316bb>] kthread+0x38/0x5d
[ 2755.726413]  [<c0131683>] kthread+0x0/0x5d
[ 2755.726413]  [<c01044f3>] kernel_thread_helper+0x7/0x10
[ 2755.726413]  =======================

This bit in particular looks "odd":

[ 2755.726413] Pid: 0, comm: swapper Tainted: G      D   2.6.26-1-686 #1
[2478111854.944041] bad: scheduling from the idle thread!
[ 2755.726413]  [<c011ec30>] dequeue_task_idle+0x1f/0x28

Thanks,
Neale.




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