Public bug reported:
Binary package hint: linux-source-2.6.27
I saw a "BUG:scheduling while atomic: swapper/0/0x00000100" and then lots of
"bad: scheduling from the idle thread" in dmesg
Kernel:
Linux titan 2.6.27-7-generic #1 SMP Thu Oct 30 04:18:38 UTC 2008 i686 GNU/Linux
linux-image-2.6.27-7-generic 2.6.27-7.15
Hardware:
is Lenovo T500 with "03:00.0 Network controller: Intel Corporation Wireless
WiFi Link 5100"
Core2 Duo CPU T9400 2 GB RAM
Happened while heavy wireless usage (downloading several files at once in
firefox)
relevant kern.log:
Oct 31 21:41:15 titan kernel: [ 3059.320510] hda_intel: azx_get_response
timeout, switching to polling mode: last cmd=0x001f000a
Oct 31 22:59:16 titan kernel: [ 7740.458254] BUG: scheduling while atomic:
swapper/0/0x00000100
Oct 31 22:59:16 titan kernel: [ 7740.458273] Modules linked in: af_packet i915
drm binfmt_misc rfcomm bridge stp bnep sco l2cap ppdev ipv6 acpi_cpufreq
cpufreq_ondemand cpufreq_userspace cpufreq_stats cpufreq_conservative
cpufreq_powersave freq_table container pci_slot sbs sbshc iptable_filter
ip_tables x_tables btusb bluetooth sbp2 parport_pc lp parport loop joydev
pcmcia thinkpad_acpi arc4 nvram ecb psmouse evdev serio_raw pcspkr iwlagn
iwlcore rfkill sdhci_pci ricoh_mmc led_class sdhci mmc_core ac battery mac80211
yenta_socket rsrc_nonstatic pcmcia_core video output cfg80211 snd_hda_intel
snd_pcm_oss snd_mixer_oss snd_pcm wmi snd_seq_dummy snd_seq_oss snd_seq_midi
snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device button
intel_agp snd agpgart soundcore snd_page_alloc shpchp pci_hotplug ext3 jbd
mbcache sha256_generic aes_i586 aes_generic cbc sd_mod crc_t10dif sr_mod cdrom
sg ata_generic ohci1394 ieee1394 ahci uhci_hcd ehci_hcd usbcore pata_acpi
e1000e libata scsi_mod dock dm_crypt dm_mod crypto
Oct 31 22:59:16 titan kernel: blkcipher thermal processor fan fbcon tileblit
font bitblit softcursor fuse
Oct 31 22:59:16 titan kernel: [ 7740.458497]
Oct 31 22:59:16 titan kernel: [ 7740.458504] Pid: 0, comm: swapper Not tainted
(2.6.27-7-generic #1)
Oct 31 22:59:16 titan kernel: [ 7740.458511] EIP: 0060:[<f8876800>] EFLAGS:
00000246 CPU: 0
Oct 31 22:59:16 titan kernel: [ 7740.458529] EIP is at
acpi_idle_enter_bm+0x268/0x2b7 [processor]
Oct 31 22:59:16 titan kernel: [ 7740.458535] EAX: c0510760 EBX: 00000414 ECX:
00000000 EDX: 01c8a000
Oct 31 22:59:16 titan kernel: [ 7740.458541] ESI: 00000000 EDI: 0005beaa EBP:
c04a7f90 ESP: c04a7f74
Oct 31 22:59:16 titan kernel: [ 7740.458547] DS: 007b ES: 007b FS: 00d8 GS:
0000 SS: 0068
Oct 31 22:59:16 titan kernel: [ 7740.458552] CR0: 8005003b CR2: 0c590000 CR3:
00515000 CR4: 00000690
Oct 31 22:59:16 titan kernel: [ 7740.458558] DR0: 00000000 DR1: 00000000 DR2:
00000000 DR3: 00000000
Oct 31 22:59:16 titan kernel: [ 7740.458563] DR6: ffff0ff0 DR7: 00000400
Oct 31 22:59:16 titan kernel: [ 7740.458569] [<c02dbf7b>]
cpuidle_idle_call+0x7b/0xd0
Oct 31 22:59:16 titan kernel: [ 7740.458581] [<c010288d>] cpu_idle+0x7d/0x140
Oct 31 22:59:16 titan kernel: [ 7740.458589] [<c036edd3>] rest_init+0x53/0x60
Oct 31 22:59:16 titan kernel: [ 7740.458600] =======================
Oct 31 22:59:16 titan kernel: [ 7740.458606] bad: scheduling from the idle
thread!
Oct 31 22:59:16 titan kernel: [ 7740.458612] Pid: 0, comm: swapper Not tainted
2.6.27-7-generic #1
Oct 31 22:59:16 titan kernel: [ 7740.458617] [<c037c406>] ? printk+0x1d/0x1f
Oct 31 22:59:16 titan kernel: [ 7740.458627] [<c0122b8a>]
dequeue_task_idle+0x2a/0x40
Oct 31 22:59:16 titan kernel: [ 7740.458635] [<c012107f>]
dequeue_task+0xcf/0x130
Oct 31 22:59:16 titan kernel: [ 7740.458645] [<c012112a>]
deactivate_task+0x1a/0x30
Oct 31 22:59:16 titan kernel: [ 7740.458653] [<c037ca23>] schedule+0x4b3/0x790
Oct 31 22:59:16 titan kernel: [ 7740.458662] [<c012b6ab>] ?
default_wake_function+0xb/0x10
Oct 31 22:59:16 titan kernel: [ 7740.458672] [<c037e511>] ?
_spin_lock_irqsave+0x31/0x40
Oct 31 22:59:16 titan kernel: [ 7740.458681] [<c013c91c>] ?
__mod_timer+0xac/0xf0
Oct 31 22:59:16 titan kernel: [ 7740.458692] [<c037d0a4>]
schedule_timeout+0x84/0xf0
Oct 31 22:59:16 titan kernel: [ 7740.458699] [<c013c260>] ?
process_timeout+0x0/0x10
Oct 31 22:59:16 titan kernel: [ 7740.458708] [<c037d09f>] ?
schedule_timeout+0x7f/0xf0
Oct 31 22:59:16 titan kernel: [ 7740.458717] [<c037d12a>]
schedule_timeout_uninterruptible+0x1a/0x20
Oct 31 22:59:16 titan kernel: [ 7740.458725] [<c013c97d>] msleep+0x1d/0x30
Oct 31 22:59:16 titan kernel: [ 7740.458736] [<f8e6bceb>]
iwl_scan_cancel_timeout+0x4b/0x80 [iwlcore]
Oct 31 22:59:16 titan kernel: [ 7740.458759] [<f8e45eb2>]
iwl4965_mac_update_tkip_key+0x32/0xe0 [iwlagn]
Oct 31 22:59:16 titan kernel: [ 7740.458776] [<f8eec10e>] ?
tkip_mixing_phase1+0xe/0x140 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.458812] [<f8eec59c>]
ieee80211_tkip_decrypt_data+0x16c/0x210 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.458845] [<f8ee3013>]
ieee80211_crypto_tkip_decrypt+0xd3/0x120 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.458874] [<f8eee667>]
ieee80211_rx_h_decrypt+0x187/0x1a0 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.458902] [<f8ef0657>]
ieee80211_invoke_rx_handlers+0xe7/0x2a0 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.458930] [<f8ef010c>]
__ieee80211_rx_handle_packet+0x21c/0x320 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.458957] [<c014b79e>] ? ktime_get+0x1e/0x40
Oct 31 22:59:16 titan kernel: [ 7740.458969] [<f8ef08c9>]
__ieee80211_rx+0xb9/0x1c0 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.458998] [<f8edf316>]
ieee80211_tasklet_handler+0xf6/0x120 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.459024] [<c0137258>]
tasklet_action+0x78/0x100
Oct 31 22:59:16 titan kernel: [ 7740.459032] [<c0137682>]
__do_softirq+0x92/0x120
Oct 31 22:59:16 titan kernel: [ 7740.459040] [<c013776d>] do_softirq+0x5d/0x60
Oct 31 22:59:16 titan kernel: [ 7740.459047] [<c01378e5>] irq_exit+0x55/0x90
Oct 31 22:59:16 titan kernel: [ 7740.459054] [<c0106c1a>] do_IRQ+0x4a/0x80
Oct 31 22:59:16 titan kernel: [ 7740.459063] [<c0105003>]
common_interrupt+0x23/0x30
Oct 31 22:59:16 titan kernel: [ 7740.459071] [<c01700d8>] ?
__audit_mq_getsetattr+0x68/0xb0
Oct 31 22:59:16 titan kernel: [ 7740.459086] [<f8876800>] ?
acpi_idle_enter_bm+0x268/0x2b7 [processor]
Oct 31 22:59:16 titan kernel: [ 7740.459104] [<c02dbf7b>]
cpuidle_idle_call+0x7b/0xd0
Oct 31 22:59:16 titan kernel: [ 7740.459112] [<c010288d>] cpu_idle+0x7d/0x140
Oct 31 22:59:16 titan kernel: [ 7740.459119] [<c036edd3>] rest_init+0x53/0x60
Oct 31 22:59:16 titan kernel: [ 7740.459128] =======================
Oct 31 22:59:16 titan kernel: [ 7740.464015] bad: scheduling from the idle
thread!
Oct 31 22:59:16 titan kernel: [ 7740.464015] Pid: 0, comm: swapper Not tainted
2.6.27-7-generic #1
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c037c406>] ? printk+0x1d/0x1f
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c0122b8a>]
dequeue_task_idle+0x2a/0x40
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c012107f>]
dequeue_task+0xcf/0x130
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c012112a>]
deactivate_task+0x1a/0x30
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c037ca23>] schedule+0x4b3/0x790
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c012b6ab>] ?
default_wake_function+0xb/0x10
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c037d0a4>]
schedule_timeout+0x84/0xf0
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c013c260>] ?
process_timeout+0x0/0x10
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c037d09f>] ?
schedule_timeout+0x7f/0xf0
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c037d12a>]
schedule_timeout_uninterruptible+0x1a/0x20
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c013c97d>] msleep+0x1d/0x30
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<f8e6bceb>]
iwl_scan_cancel_timeout+0x4b/0x80 [iwlcore]
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<f8e45eb2>]
iwl4965_mac_update_tkip_key+0x32/0xe0 [iwlagn]
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<f8eec10e>] ?
tkip_mixing_phase1+0xe/0x140 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<f8eec59c>]
ieee80211_tkip_decrypt_data+0x16c/0x210 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<f8ee3013>]
ieee80211_crypto_tkip_decrypt+0xd3/0x120 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<f8eee667>]
ieee80211_rx_h_decrypt+0x187/0x1a0 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<f8ef0657>]
ieee80211_invoke_rx_handlers+0xe7/0x2a0 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<f8ef010c>]
__ieee80211_rx_handle_packet+0x21c/0x320 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c014b79e>] ? ktime_get+0x1e/0x40
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<f8ef08c9>]
__ieee80211_rx+0xb9/0x1c0 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<f8edf316>]
ieee80211_tasklet_handler+0xf6/0x120 [mac80211]
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c0137258>]
tasklet_action+0x78/0x100
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c0137682>]
__do_softirq+0x92/0x120
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c013776d>] do_softirq+0x5d/0x60
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c01378e5>] irq_exit+0x55/0x90
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c0106c1a>] do_IRQ+0x4a/0x80
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c0105003>]
common_interrupt+0x23/0x30
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c01700d8>] ?
__audit_mq_getsetattr+0x68/0xb0
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<f8876800>] ?
acpi_idle_enter_bm+0x268/0x2b7 [processor]
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c02dbf7b>]
cpuidle_idle_call+0x7b/0xd0
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c010288d>] cpu_idle+0x7d/0x140
Oct 31 22:59:16 titan kernel: [ 7740.464015] [<c036edd3>] rest_init+0x53/0x60
Oct 31 22:59:16 titan kernel: [ 7740.464015] =======================
Oct 31 22:59:16 titan kernel: [ 7740.601541] bad: scheduling from the idle
thread!
Oct 31 22:59:16 titan kernel: [ 7740.601557] Pid: 0, comm: swapper Not tainted
2.6.27-7-generic #1
Oct 31 22:59:16 titan kernel: [ 7740.601563] [<c037c406>] ? printk+0x1d/0x1f
Oct 31 22:59:16 titan kernel: [ 7740.601577] [<c0122b8a>]
dequeue_task_idle+0x2a/0x40
Oct 31 22:59:16 titan kernel: [ 7740.601585] [<c012107f>]
dequeue_task+0xcf/0x130
Oct 31 22:59:16 titan kernel: [ 7740.601594] [<c012112a>]
deactivate_task+0x1a/0x30
Oct 31 22:59:16 titan kernel: [ 7740.601602] [<c037ca23>] schedule+0x4b3/0x790
Oct 31 22:59:16 titan kernel: [ 7740.601670] [<c0380ff5>] ?
notifier_call_chain+0x35/0x70
Oct 31 22:59:16 titan kernel: [ 7740.601681] [<c0151b55>] ?
clockevents_notify+0x35/0x80
Oct 31 22:59:16 titan kernel: [ 7740.601700] [<f8875a43>] ?
ticks_elapsed_in_us+0xb/0x4d [processor]
Oct 31 22:59:16 titan kernel: [ 7740.601720] [<f88762d7>] ?
acpi_state_timer_broadcast+0x36/0x39 [processor]
Oct 31 22:59:16 titan kernel: [ 7740.601736] [<c0153d82>] ?
tick_nohz_stop_idle+0x12/0x70
Oct 31 22:59:16 titan kernel: [ 7740.601746] [<c0153e15>] ?
tick_nohz_restart_sched_tick+0x35/0x180
Oct 31 22:59:16 titan kernel: [ 7740.601756] [<c01028cd>] cpu_idle+0xbd/0x140
Oct 31 22:59:16 titan kernel: [ 7740.601763] [<c036edd3>] rest_init+0x53/0x60
Oct 31 22:59:16 titan kernel: [ 7740.601773] =======================
Oct 31 22:59:16 titan kernel: [ 7740.606620] bad: scheduling from the idle
thread!
Oct 31 22:59:16 titan kernel: [ 7740.606625] Pid: 0, comm: swapper Not tainted
2.6.27-7-generic #1
Oct 31 22:59:16 titan kernel: [ 7740.606627] [<c037c406>] ? printk+0x1d/0x1f
Oct 31 22:59:16 titan kernel: [ 7740.606631] [<c0122b8a>]
dequeue_task_idle+0x2a/0x40
Oct 31 22:59:16 titan kernel: [ 7740.606634] [<c012107f>]
dequeue_task+0xcf/0x130
Oct 31 22:59:16 titan kernel: [ 7740.606637] [<c012112a>]
deactivate_task+0x1a/0x30
Oct 31 22:59:16 titan kernel: [ 7740.606640] [<c037ca23>] schedule+0x4b3/0x790
Oct 31 22:59:16 titan kernel: [ 7740.606643] [<c0380ff5>] ?
notifier_call_chain+0x35/0x70
Oct 31 22:59:16 titan kernel: [ 7740.606646] [<c0151b55>] ?
clockevents_notify+0x35/0x80
Oct 31 22:59:16 titan kernel: [ 7740.606649] [<c01028cd>] cpu_idle+0xbd/0x140
Oct 31 22:59:16 titan kernel: [ 7740.606652] [<c036edd3>] rest_init+0x53/0x60
Oct 31 22:59:16 titan kernel: [ 7740.606655] =======================
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
BUG: scheduling while atomic: swapper/0/0x00000100
https://bugs.launchpad.net/bugs/291832
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