BUG: scheduling while atomic: swapper/0/0x10000100

[Jarkko Lietolahti]

When trying to use a bluetooth mouse;

WARNING: at /build/buildd/linux-2.6.30/kernel/workqueue.c:371 flush_cpu_workqueue+0x91/0xa0()
[ 94.961892] Hardware name: VGN-FW31ZJ
[ 94.961895] Modules linked in: cryptd aes_x86_64 aes_generic nfsd lockd nfs_acl auth_rpcgss sunrpc radeon drm ppdev bridge stp bnep binfmt_misc xfs exportfs sbp2 lp parport dm_crypt snd_hda_codec_atihdmi arc4 ecb snd_hda_codec_realtek joydev iwlagn iwlcore snd_pcm_oss snd_mixer_oss snd_hda_intel snd_hda_codec snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device mac80211 snd soundcore uvcvideo snd_page_alloc psmouse sdhci_pci sdhci iTCO_wdt cfg80211 video intel_agp pcspkr videodev v4l1_compat v4l2_compat_ioctl32 serio_raw led_class iTCO_vendor_support btusb sony_laptop output ohci1394 ieee1394 sky2 fbcon tileblit font bitblit softcursor
[ 94.962008] Pid: 256, comm: bluetooth Not tainted 2.6.30-4-generic #5-Ubuntu
[ 94.962013] Call Trace:
[ 94.962024] [<ffffffff80250813>] warn_slowpath+0xc3/0x120
[ 94.962036] [<ffffffff80431fc8>] ? vsnprintf+0x428/0x590
[ 94.962045] [<ffffffff802461eb>] ? dequeue_entity+0x1b/0x250
[ 94.962053] [<ffffffff80264321>] flush_cpu_workqueue+0x91/0xa0
[ 94.962062] [<ffffffff80264d7c>] flush_workqueue+0x4c/0x80
[ 94.962071] [<ffffffff806a04c0>] ? add_conn+0x0/0x50
[ 94.962078] [<ffffffff806a04d8>] add_conn+0x18/0x50
[ 94.962086] [<ffffffff80263e55>] run_workqueue+0x95/0x180
[ 94.962093] [<ffffffff80263fe4>] worker_thread+0xa4/0x130
[ 94.962103] [<ffffffff802689e0>] ? autoremove_wake_function+0x0/0x40
[ 94.962111] [<ffffffff80263f40>] ? worker_thread+0x0/0x130
[ 94.962119] [<ffffffff80268585>] kthread+0x55/0xa0
[ 94.962129] [<ffffffff802130ca>] child_rip+0xa/0x20
[ 94.962137] [<ffffffff80268530>] ? kthread+0x0/0xa0
[ 94.962145] [<ffffffff802130c0>] ? child_rip+0x0/0x20
[ 94.962151] ---[ end trace 370e17d4af25b10e ]---
[ 95.190933] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 95.193116] BUG: unable to handle kernel NULL pointer dereference at 0000000000000038
[ 95.193128] IP: [<ffffffff80358f44>] sysfs_addrm_start+0x34/0xc0

The kernel is 2.6.30-rc4 aka linux-image-2.6.30-4-generic (2.6.30-4.5).

[Jarkko Lietolahti (jarkko-jab)]

With 2.6.30-rc5 it's possible to connect and use the wireless mouse. Still there is the same errror message in dmesg;

[ 3528.863696] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 3528.865703] input: Acer Bluetooth Wireless Mouse as /devices/pci0000:00/0000:00:1d.2/usb8/8-1/8-1:1.0/bluetooth/hci0/hci0:11/input13
[ 3528.865899] generic-bluetooth 0005:0A5C:0001.0003: input,hidraw1: BLUETOOTH HID v1.3c Mouse [Acer Bluetooth Wireless Mouse] on 00:21:4F:BC:2E:E6
[ 3583.833029] BUG: scheduling while atomic: swapper/0/0x10000100
[ 3583.833037] Modules linked in: hidp iwlagn iwlcore lib80211 mac80211 cfg80211 cryptd aes_x86_64 aes_generic nfsd lockd nfs_acl auth_rpcgss sunrpc radeon drm ppdev bridge stp bnep binfmt_misc xfs exportfs sbp2 lp parport dm_crypt snd_hda_codec_atihdmi arc4 ecb snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_pcm_oss snd_mixer_oss snd_hwdep snd_pcm snd_seq_oss joydev snd_seq_midi_event snd_seq snd_timer snd_seq_device iTCO_wdt psmouse sdhci_pci sdhci uvcvideo video snd iTCO_vendor_support serio_raw pcspkr intel_agp sony_laptop videodev v4l1_compat v4l2_compat_ioctl32 btusb led_class output soundcore snd_page_alloc ohci1394 ieee1394 sky2 usbhid fbcon tileblit font bitblit softcursor [last unloaded: cfg80211]
[ 3583.833179] CPU 0:
[ 3583.833184] Modules linked in: hidp iwlagn iwlcore lib80211 mac80211 cfg80211 cryptd aes_x86_64 aes_generic nfsd lockd nfs_acl auth_rpcgss sunrpc radeon drm ppdev bridge stp bnep binfmt_misc xfs exportfs sbp2 lp parport dm_crypt snd_hda_codec_atihdmi arc4 ecb snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_pcm_oss snd_mixer_oss snd_hwdep snd_pcm snd_seq_oss joydev snd_seq_midi_event snd_seq snd_timer snd_seq_device iTCO_wdt psmouse sdhci_pci sdhci uvcvideo video snd iTCO_vendor_support serio_raw pcspkr intel_agp sony_laptop videodev v4l1_compat v4l2_compat_ioctl32 btusb led_class output soundcore snd_page_alloc ohci1394 ieee1394 sky2 usbhid fbcon tileblit font bitblit softcursor [last unloaded: cfg80211]
[ 3583.833297] Pid: 0, comm: swapper Not tainted 2.6.30-rc5-custom #1 VGN-FW31ZJ
[ 3583.833303] RIP: 0010:[<ffffffff804821b7>] [<ffffffff804821b7>] acpi_idle_enter_bm+0x255/0x289
[ 3583.833322] RSP: 0018:ffffffff80935e78 EFLAGS: 00000203
[ 3583.833327] RAX: 000000000000ea30 RBX: ffffffff80935ec8 RCX: 0000000000000000
[ 3583.833333] RDX: ffff880028035000 RSI: 000003426d17769d RDI: ffff880028048740
[ 3583.833339] RBP: ffffffff8021298e R08: fffffffffec11bf2 R09: 0000000000000000
[ 3583.833345] R10: 0000000000000000 R11: 0000000000000000 R12: 000000000014efc4
[ 3583.833350] R13: ffffffff80935e18 R14: ffffffff8026ede7 R15: ffffffff80935de8
[ 3583.833357] FS: 0000000000000000(0000) GS:ffff880028035000(0000) knlGS:0000000000000000
[ 3583.833364] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[ 3583.833369] CR2: 00007fcd122b5000 CR3: 0000000000201000 CR4: 00000000000406a0
[ 3583.833375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3583.833381] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 3583.833386] Call Trace:
[ 3583.833395] [<ffffffff804821b0>] ? acpi_idle_enter_bm+0x24e/0x289
[ 3583.833407] [<ffffffff805a518b>] ? cpuidle_idle_ca...

[VladNistor (vladnistor)]

This occured today while I was browsing my phone through bluetooth.

Linux unknown-device 2.6.30-5-generic #6-Ubuntu SMP Mon May 11 19:56:30 UTC 2009 i686 GNU/Linux
Karmic 9.10 Alpha 1
apt-cache policy linux-image-2.6.30-5-generic
linux-image-2.6.30-5-generic:
  Installed: 2.6.30-5.6
  Candidate: 2.6.30-5.6
  Version table:
 *** 2.6.30-5.6 0
        500 http://gb.archive.ubuntu.com karmic/main Packages
        100 /var/lib/dpkg/status

[T. S. (t.s.)]

Like for VladNistor, this also occured for me today when I was trying to browse my Sony Ericsson w760 using the bluetooth applet. Bluetooth had worked earlier, but then my phone wouldn't find my laptop, so I used the hardware switch to turn the laptop's radio off and on again. Then I selected "browse files on device.." and then the error occured.

Ubuntu 9.04
Linux goedel 2.6.30-020630rc2-generic #020630rc2 SMP Wed Apr 15 14:00:27 UTC 2009 i686 GNU/Linux
Fujitsu Lifebook S7020

[T. S. (t.s.)]

Like for VladNistor, this also occured for me today when I was trying to browse my Sony Ericsson w760 using the bluetooth applet. Bluetooth had worked earlier, but then my phone wouldn't find my laptop, so I used the hardware switch to turn the laptop's radio off and on again. Then I selected "browse files on device.." and then the error occured.

Ubuntu 9.04
Linux goedel 2.6.30-020630rc2-generic #020630rc2 SMP Wed Apr 15 14:00:27 UTC 2009 i686 GNU/Linux
Fujitsu Lifebook S7020

[Vikram Dhillon (dhillon-v10)]

Unfortunately it seems this bug is still an issue. Can you confirm this issue exists with the most recent Lucid Lynx 10.04 release - http://cdimage.ubuntu.com/releases/lucid/alpha-2/. If the issue remains in Lucid, please test the latest 2.6.32 upstream kernel build - https://wiki.ubuntu.com/KernelMainlineBuilds . Let us know your results. Thanks.