Re: [PATCH] usb: cdc-wdm: Fix "scheduling while atomic" after failed write

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Another improved attempt using netconsole.  Seems the system is sort of
running for quite a while after all input devices dies. At least the
network is up so logging works. For some odd reason I seem unable to
forward debug messages over netconsole (yes, I have tried "dmesg -n
debug"), so I modified the level of the debug messages instead:

diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 1fa7769..8f98051 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -328,6 +328,8 @@ static ssize_t wdm_write
        struct wdm_device *desc = file->private_data;
        struct usb_ctrlrequest *req;
 
+       dev_err(&desc->intf->dev, "%s: desc->count=%d\n", __func__, desc->count);
+
        if (count > desc->wMaxCommand)
                count = desc->wMaxCommand;
 
@@ -526,6 +528,8 @@ static int wdm_flush(struct file *file, fl_owner_t id)
 {
        struct wdm_device *desc = file->private_data;
 
+       dev_err(&desc->intf->dev, "%s: desc->count=%d\n", __func__, desc->count);
+
        wait_event(desc->wait, !test_bit(WDM_IN_USE, &desc->flags));
        if (desc->werr < 0)
                dev_err(&desc->intf->dev, "Error in flush path: %d\n",
@@ -610,6 +614,7 @@ static int wdm_release(struct inode *inode, struct file *file)
 {
        struct wdm_device *desc = file->private_data;
 
+       dev_err(&desc->intf->dev, "%s: desc->count=%d\n", __func__, desc->count);
        mutex_lock(&wdm_mutex);
 
        /* using write lock to protect desc->count */
@@ -877,6 +882,7 @@ static void wdm_disconnect(struct usb_interface *intf)
 
        usb_deregister_dev(intf, &wdm_class);
        desc = wdm_find_device(intf);
+       dev_err(&desc->intf->dev, "%s: desc->count=%d\n", __func__, desc->count);
        mutex_lock(&wdm_mutex);
 
        /* the spinlock makes sure no new urbs are generated in the callbacks */


I first ran a sequence with the above and the "revert patch" as well,
just to have something to compare with:


[ 1177.685923] usbcore: registered new interface driver cdc_wdm
[ 1177.693384] qmi_wwan 4-4:1.8: cdc-wdm0: USB WDM device
[ 1177.695245] qmi_wwan 4-4:1.8: wwan0: register 'qmi_wwan' at usb-0000:00:1d.7-4, Sierra Wireless wwan/QMI device, d2:47:09:95:68:e0
[ 1177.699114] qmi_wwan 4-4:1.19: cdc-wdm1: USB WDM device
[ 1177.700185] qmi_wwan 4-4:1.19: wwan1: register 'qmi_wwan' at usb-0000:00:1d.7-4, Sierra Wireless wwan/QMI device, d2:47:09:95:68:e0
[ 1177.702008] qmi_wwan 4-4:1.20: not on our whitelist - ignored
[ 1177.702063] usbcore: registered new interface driver qmi_wwan
[ 1181.840179] ehci_hcd 0000:00:1d.7: PCI INT D disabled
[ 1181.856147] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D3
[ 1187.861962] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 1187.876321] ehci_hcd 0000:00:1d.7: BAR 0: set to [mem 0xf0827000-0xf08273ff] (PCI address [0xf0827000-0xf08273ff])
[ 1187.876369] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 1187.876521] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 1187.876536] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 1187.876572] ehci_hcd 0000:00:1d.7: PCI INT D -> GSI 19 (level, low) -> IRQ 19
[ 1187.953701] qmi_wwan 4-4:1.8: wdm_write: desc->count=1
[ 1187.954167] qmi_wwan 4-4:1.8: wdm_write: desc->count=1
[ 1187.955931] qmi_wwan 4-4:1.8: wdm_flush: desc->count=1
[ 1187.955951] qmi_wwan 4-4:1.8: wdm_release: desc->count=1
[ 1191.988301] ehci_hcd 0000:00:1d.7: PCI INT D disabled
[ 1192.004159] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D3
[ 1223.302379] usbcore: deregistering interface driver qmi_wwan
[ 1223.302462] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 1223.316263] ehci_hcd 0000:00:1d.7: BAR 0: set to [mem 0xf0827000-0xf08273ff] (PCI address [0xf0827000-0xf08273ff])
[ 1223.316301] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 1223.316466] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 1223.316480] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 1223.316510] ehci_hcd 0000:00:1d.7: PCI INT D -> GSI 19 (level, low) -> IRQ 19
[ 1223.393069] qmi_wwan 4-4:1.19: wwan1: unregister 'qmi_wwan' usb-0000:00:1d.7-4, Sierra Wireless wwan/QMI device
[ 1223.412248] qmi_wwan 4-4:1.19: wdm_disconnect: desc->count=0
[ 1223.412345] qmi_wwan 4-4:1.8: wwan0: unregister 'qmi_wwan' usb-0000:00:1d.7-4, Sierra Wireless wwan/QMI device
[ 1223.432210] qmi_wwan 4-4:1.8: wdm_disconnect: desc->count=0
[ 1223.435471] usbcore: deregistering interface driver cdc_wdm



Then I removed the "revert patch" and ran without it:


[ 1223.439884] usbcore: registered new interface driver cdc_wdm
[ 1223.447409] qmi_wwan 4-4:1.8: cdc-wdm0: USB WDM device
[ 1223.449372] qmi_wwan 4-4:1.8: wwan0: register 'qmi_wwan' at usb-0000:00:1d.7-4, Sierra Wireless wwan/QMI device, d2:47:09:95:68:e0
[ 1223.453588] qmi_wwan 4-4:1.19: cdc-wdm1: USB WDM device
[ 1223.454687] qmi_wwan 4-4:1.19: wwan1: register 'qmi_wwan' at usb-0000:00:1d.7-4, Sierra Wireless wwan/QMI device, d2:47:09:95:68:e0
[ 1223.454730] qmi_wwan 4-4:1.20: not on our whitelist - ignored
[ 1223.454775] usbcore: registered new interface driver qmi_wwan
[ 1227.840301] ehci_hcd 0000:00:1d.7: PCI INT D disabled
[ 1227.856160] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D3
[ 1231.569269] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 1231.584277] ehci_hcd 0000:00:1d.7: BAR 0: set to [mem 0xf0827000-0xf08273ff] (PCI address [0xf0827000-0xf08273ff])
[ 1231.584325] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 1231.584496] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 1231.584512] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 1231.584543] ehci_hcd 0000:00:1d.7: PCI INT D -> GSI 19 (level, low) -> IRQ 19
[ 1231.661756] qmi_wwan 4-4:1.8: wdm_write: desc->count=1
[ 1231.662326] qmi_wwan 4-4:1.8: wdm_write: desc->count=1
[ 1231.664525] qmi_wwan 4-4:1.8: wdm_flush: desc->count=1
[ 1231.664546] qmi_wwan 4-4:1.8: wdm_release: desc->count=1
[ 1235.840299] ehci_hcd 0000:00:1d.7: PCI INT D disabled
[ 1235.856311] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D3
[ 1256.085474] general protection fault: 0000 [#1] SMP 
[ 1256.098900] CPU 0 
[ 1256.098900] Modules linked in: qmi_wwan(O) cdc_wdm(O) netconsole configfs acpi_cpufreq mperf cpufreq_userspace cpufreq_stats cpufreq_conservative cpufreq_powersave xt_hl xt_multiport ip6t_LOG iptable_filter ip_tables ip6table_filter ip6_tables x_tables parport_pc ppdev lp parport bnep rfcomm binfmt_misc uinput microcode fuse nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc kvm_intel kvm 8021q garp stp tun ext2 coretemp loop snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss thinkpad_acpi joydev arc4 nvram snd_pcm snd_page_alloc snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq sierra(O) uvcvideo snd_seq_device usbserial snd_timer btusb videodev bluetooth i915 snd usbnet iwlwifi v4l2_compat_ioctl32 crc16 media mii drm_kms_helper psmouse drm iTCO_wdt iTCO_vendor_support i2c_i801 serio_raw mac80211 evdev i2c_algo_bit i2c_core cfg80211 battery ac soundcore rfkill power_supply wmi video processor button ext3 mbcache jbd sha256_generic cryptd aes_x86_64 aes_generic cbc dm_crypt dm_mod nbd sr_mod cdrom sd_mod crc_t10dif ahci libahci libata scsi_mod thermal thermal_sys uhci_hcd ehci_hcd e1000e usbcore usb_common [last unloaded: cdc_wdm]
[ 1256.120336] 
[ 1256.120336] Pid: 2762, comm: Xorg Tainted: G           O 3.2.0-2-amd64 #1 LENOVO 2776LEG/2776LEG
[ 1256.120336] RIP: 0010:[<ffffffffa0226e0b>]  [<ffffffffa0226e0b>] drm_vm_close_locked+0x9c/0xa8 [drm]
[ 1256.120336] RSP: 0018:ffff880231505ea8  EFLAGS: 00010217
[ 1256.120336] RAX: 0200000000000000 RBX: ffff8802300ea978 RCX: ffffffffa023b7e1
[ 1256.120336] RDX: ffffffffa0235a80 RSI: ffffffffa023b7b0 RDI: 0200000000000000
[ 1256.120336] RBP: ffff880230cfd168 R08: 00007fc02abba000 R09: 0000000000004000
[ 1256.120336] R10: ffff88021623b558 R11: ffff88021623b558 R12: ffff8802300ea978
[ 1256.120336] R13: ffff8802300ea978 R14: 00007fc02abbe000 R15: ffff8802300ea978
[ 1256.120336] FS:  00007fc030a5e880(0000) GS:ffff88023bc00000(0000) knlGS:0000000000000000
[ 1256.242037] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1256.242037] CR2: 00007fc02abaf000 CR3: 0000000230040000 CR4: 00000000000006f0
[ 1256.242037] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1256.242037] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 1256.242037] Process Xorg (pid: 2762, threadinfo ffff880231504000, task ffff88022fead710)
[ 1256.242037] Stack:
[ 1256.242037]  ffff88022fead710 ffff880230cfd020 ffff88022059c200 ffffffffa0222ab4
[ 1256.242037]  0000000000000000 ffff8802300ea978 00007fc02abba000 ffffffff810d3503
[ 1256.242037]  ffff88021623b558 ffff88022f4cd400 ffff88021623b558 ffffffff810d46f3
[ 1256.242037] Call Trace:
[ 1256.242037]  [<ffffffffa0222ab4>] ? drm_gem_vm_close+0x26/0x46 [drm]
[ 1256.242037]  [<ffffffff810d3503>] ? remove_vma+0x29/0x6b
[ 1256.242037]  [<ffffffff810d46f3>] ? do_munmap+0x2da/0x2f3
[ 1256.242037]  [<ffffffff810d483a>] ? sys_munmap+0x3c/0x52
[ 1256.242037]  [<ffffffff8134e252>] ? system_call_fastpath+0x16/0x1b
[ 1256.242037] Code: 42 08 48 89 10 48 b8 00 01 10 00 00 00 ad de 48 89 07 48 b8 00 02 20 00 00 00 ad de 48 89 47 08 58 5b 5d e9 e9 37 ec e0 48 89 c7 <48> 8b 00 48 39 ef 75 be 58 5b 5d c3 55 48 89 fd 53 52 48 8b 87 
[ 1256.242037] RIP  [<ffffffffa0226e0b>] drm_vm_close_locked+0x9c/0xa8 [drm]
[ 1256.242037]  RSP <ffff880231505ea8>
[ 1316.432906] INFO: rcu_sched detected stalls on CPUs/tasks: { 0} (detected by 1, t=15050 jiffies)
[ 1316.436884] sending NMI to all CPUs:
[ 1287.965603] NMI backtrace for cpu 0
[ 1287.965603] CPU 0 
[ 1287.965603] Modules linked in: qmi_wwan(O) cdc_wdm(O) netconsole configfs acpi_cpufreq mperf cpufreq_userspace cpufreq_stats cpufreq_conservative cpufreq_powersave xt_hl xt_multiport ip6t_LOG iptable_filter ip_tables ip6table_filter ip6_tables x_tables parport_pc ppdev lp parport bnep rfcomm binfmt_misc uinput microcode fuse nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc kvm_intel kvm 8021q garp stp tun ext2 coretemp loop snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss thinkpad_acpi joydev arc4 nvram snd_pcm snd_page_alloc snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq sierra(O) uvcvideo snd_seq_device usbserial snd_timer btusb videodev bluetooth i915 snd usbnet iwlwifi v4l2_compat_ioctl32 crc16 media mii drm_kms_helper psmouse drm iTCO_wdt iTCO_vendor_support i2c_i801 serio_raw mac80211 evdev i2c_algo_bit i2c_core cfg80211 battery ac soundcore rfkill power_supply wmi video processor button ext3 mbcache jbd sha256_generic cryptd aes_x86_64 aes_generic cbc dm_crypt dm_mod nbd sr_mod cdrom sd_mod crc_t10dif ahci libahci libata scsi_mod thermal thermal_sys uhci_hcd ehci_hcd e1000e usbcore usb_common [last unloaded: cdc_wdm]
[ 1287.965603] 
[ 1287.965603] Pid: 2762, comm: Xorg Tainted: G           O 3.2.0-2-amd64 #1 LENOVO 2776LEG/2776LEG
[ 1287.965603] RIP: 0010:[<ffffffff81040074>]  [<ffffffff81040074>] mutex_spin_on_owner+0x20/0x39
[ 1287.965603] RSP: 0018:ffff880231505920  EFLAGS: 00000046
[ 1287.965603] RAX: 0000000000000000 RBX: ffff880230cfd020 RCX: ffff880232385e40
[ 1287.965603] RDX: 0000000000000000 RSI: ffff88022fead710 RDI: ffff880230cfd020
[ 1287.965603] RBP: ffff88022fead710 R08: ffffffffa034e2a0 R09: ffffffffa0240fe0
[ 1287.965603] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002
[ 1287.965603] R13: ffff88022fead710 R14: ffff880231505fd8 R15: 0000000000000000
[ 1287.965603] FS:  00007fc030a5e880(0000) GS:ffff88023bc00000(0000) knlGS:0000000000000000
[ 1287.965603] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1287.965603] CR2: 00007fc02abaf000 CR3: 0000000230040000 CR4: 00000000000006f0
[ 1287.965603] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1287.965603] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 1287.965603] Process Xorg (pid: 2762, threadinfo ffff880231504000, task ffff88022fead710)
[ 1287.965603] Stack:
[ 1287.965603]  ffff880230cfd020 ffff88022fead710 ffffffff813487ba 0000000000000016
[ 1287.965603]  ffff8802315059f0 ffffffffa0240fe5 ffffffffa0241000 ffffffffa0240fe0
[ 1287.965603]  ffffffffa023c0fb 0000000000000020 ffff880230cfd020 ffff880230cfd000
[ 1287.965603] Call Trace:
[ 1287.965603]  [<ffffffff813487ba>] ? __mutex_lock_common.isra.5+0x3a/0x164
[ 1287.965603]  [<ffffffff8134876d>] ? mutex_lock+0x1a/0x2d
[ 1287.965603]  [<ffffffffa031ee1a>] ? intel_pipe_set_base+0x94/0x254 [i915]
[ 1287.965603]  [<ffffffff811affaa>] ? snprintf+0x39/0x3e
[ 1287.965603]  [<ffffffffa02812a9>] ? drm_crtc_helper_set_config+0x7b8/0x933 [drm_kms_helper]
[ 1287.965603]  [<ffffffff810363c7>] ? should_resched+0x5/0x23
[ 1287.965603]  [<ffffffffa027e676>] ? drm_fb_helper_pan_display+0x64/0x9c [drm_kms_helper]
[ 1287.965603]  [<ffffffff811ae437>] ? put_dec+0x2e/0x33
[ 1287.965603]  [<ffffffff811d7752>] ? fb_pan_display+0xd4/0x10b
[ 1287.965603]  [<ffffffff811e3b4c>] ? bit_update_start+0x16/0x32
[ 1287.965603]  [<ffffffff811e189f>] ? fbcon_switch+0x343/0x3c5
[ 1287.965603]  [<ffffffff81234ade>] ? redraw_screen+0xe5/0x171
[ 1287.965603]  [<ffffffff811e0f5b>] ? fbcon_blank+0x183/0x1c7
[ 1287.965603]  [<ffffffff810706e1>] ? arch_local_irq_save+0x11/0x17
[ 1287.965603]  [<ffffffff81349294>] ? _raw_spin_lock_irqsave+0x9/0x25
[ 1287.965603]  [<ffffffff81051fa6>] ? lock_timer_base.isra.29+0x23/0x47
[ 1287.965603]  [<ffffffff81052262>] ? __mod_timer+0x139/0x14b
[ 1287.965603]  [<ffffffff812361ae>] ? do_unblank_screen+0xeb/0x144
[ 1287.965603]  [<ffffffff811b2766>] ? bust_spinlocks+0x12/0x34
[ 1287.965603]  [<ffffffff8134a050>] ? oops_end+0x33/0xb6
[ 1287.965603]  [<ffffffff81349805>] ? general_protection+0x25/0x30
[ 1287.965603]  [<ffffffffa0226e0b>] ? drm_vm_close_locked+0x9c/0xa8 [drm]
[ 1287.965603]  [<ffffffffa0226dba>] ? drm_vm_close_locked+0x4b/0xa8 [drm]
[ 1287.965603]  [<ffffffffa0222ab4>] ? drm_gem_vm_close+0x26/0x46 [drm]
[ 1287.965603]  [<ffffffff810d3503>] ? remove_vma+0x29/0x6b
[ 1287.965603]  [<ffffffff810d46f3>] ? do_munmap+0x2da/0x2f3
[ 1287.965603]  [<ffffffff810d483a>] ? sys_munmap+0x3c/0x52
[ 1287.965603]  [<ffffffff8134e252>] ? system_call_fastpath+0x16/0x1b
[ 1287.965603] Code: db e8 f0 06 03 00 48 89 d8 5b c3 31 c0 f6 05 00 d7 64 00 04 55 48 89 f5 53 48 89 fb 75 0d eb 21 e8 3c 63 ff ff 85 c0 75 0e f3 90 <48> 39 6b 18 75 06 83 7d 28 00 75 e9 31 c0 48 83 7b 18 00 0f 94 
[ 1287.965603] Call Trace:
[ 1287.965603]  [<ffffffff813487ba>] ? __mutex_lock_common.isra.5+0x3a/0x164
[ 1287.965603]  [<ffffffff8134876d>] ? mutex_lock+0x1a/0x2d
[ 1287.965603]  [<ffffffffa031ee1a>] ? intel_pipe_set_base+0x94/0x254 [i915]
[ 1287.965603]  [<ffffffff811affaa>] ? snprintf+0x39/0x3e
[ 1287.965603]  [<ffffffffa02812a9>] ? drm_crtc_helper_set_config+0x7b8/0x933 [drm_kms_helper]
[ 1287.965603]  [<ffffffff810363c7>] ? should_resched+0x5/0x23
[ 1287.965603]  [<ffffffffa027e676>] ? drm_fb_helper_pan_display+0x64/0x9c [drm_kms_helper]
[ 1287.965603]  [<ffffffff811ae437>] ? put_dec+0x2e/0x33
[ 1287.965603]  [<ffffffff811d7752>] ? fb_pan_display+0xd4/0x10b
[ 1287.965603]  [<ffffffff811e3b4c>] ? bit_update_start+0x16/0x32
[ 1287.965603]  [<ffffffff811e189f>] ? fbcon_switch+0x343/0x3c5
[ 1287.965603]  [<ffffffff81234ade>] ? redraw_screen+0xe5/0x171
[ 1287.965603]  [<ffffffff811e0f5b>] ? fbcon_blank+0x183/0x1c7
[ 1287.965603]  [<ffffffff810706e1>] ? arch_local_irq_save+0x11/0x17
[ 1287.965603]  [<ffffffff81349294>] ? _raw_spin_lock_irqsave+0x9/0x25
[ 1287.965603]  [<ffffffff81051fa6>] ? lock_timer_base.isra.29+0x23/0x47
[ 1287.965603]  [<ffffffff81052262>] ? __mod_timer+0x139/0x14b
[ 1287.965603]  [<ffffffff812361ae>] ? do_unblank_screen+0xeb/0x144
[ 1287.965603]  [<ffffffff811b2766>] ? bust_spinlocks+0x12/0x34
[ 1287.965603]  [<ffffffff8134a050>] ? oops_end+0x33/0xb6
[ 1287.965603]  [<ffffffff81349805>] ? general_protection+0x25/0x30
[ 1287.965603]  [<ffffffffa0226e0b>] ? drm_vm_close_locked+0x9c/0xa8 [drm]
[ 1287.965603]  [<ffffffffa0226dba>] ? drm_vm_close_locked+0x4b/0xa8 [drm]
[ 1287.965603]  [<ffffffffa0222ab4>] ? drm_gem_vm_close+0x26/0x46 [drm]
[ 1287.965603]  [<ffffffff810d3503>] ? remove_vma+0x29/0x6b
[ 1287.965603]  [<ffffffff810d46f3>] ? do_munmap+0x2da/0x2f3
[ 1287.965603]  [<ffffffff810d483a>] ? sys_munmap+0x3c/0x52
[ 1287.965603]  [<ffffffff8134e252>] ? system_call_fastpath+0x16/0x1b
[ 1316.436884] NMI backtrace for cpu 1
[ 1316.436884] CPU 1 
[ 1316.436884] Modules linked in: qmi_wwan(O) cdc_wdm(O) netconsole configfs acpi_cpufreq mperf cpufreq_userspace cpufreq_stats cpufreq_conservative cpufreq_powersave xt_hl xt_multiport ip6t_LOG iptable_filter ip_tables ip6table_filter ip6_tables x_tables parport_pc ppdev lp parport bnep rfcomm binfmt_misc uinput microcode fuse nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc kvm_intel kvm 8021q garp stp tun ext2 coretemp loop snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss thinkpad_acpi joydev arc4 nvram snd_pcm snd_page_alloc snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq sierra(O) uvcvideo snd_seq_device usbserial snd_timer btusb videodev bluetooth i915 snd usbnet iwlwifi v4l2_compat_ioctl32 crc16 media mii drm_kms_helper psmouse drm iTCO_wdt iTCO_vendor_support i2c_i801 serio_raw mac80211 evdev i2c_algo_bit i2c_core cfg80211 battery ac soundcore rfkill power_supply wmi video processor button ext3 mbcache jbd sha256_generic cryptd aes_x86_64 aes_generic cbc dm_crypt dm_mod nbd sr_mod cdrom sd_mod crc_t10dif ahci libahci libata scsi_mod thermal thermal_sys uhci_hcd ehci_hcd e1000e usbcore usb_common [last unloaded: cdc_wdm]
[ 1316.436884] 
[ 1316.436884] Pid: 6173, comm: kworker/u:0 Tainted: G           O 3.2.0-2-amd64 #1 LENOVO 2776LEG/2776LEG
[ 1316.436884] RIP: 0010:[<ffffffff811b0bdb>]  [<ffffffff811b0bdb>] __const_udelay+0x9/0x20
[ 1316.436884] RSP: 0018:ffff88023bc83e20  EFLAGS: 00000046
[ 1316.436884] RAX: 0000000000000000 RBX: 0000000000002710 RCX: 0000000000000040
[ 1316.436884] RDX: 0000000000553c97 RSI: 0000000000000200 RDI: 0000000000418958
[ 1316.436884] RBP: ffffffff81622180 R08: 000000008b000052 R09: 0000000000000001
[ 1316.436884] R10: 0000000216390c00 R11: 0000000216390c00 R12: ffffffff81622280
[ 1316.436884] R13: 0000000000000001 R14: ffffffff81624280 R15: 0000000000000000
[ 1316.436884] FS:  0000000000000000(0000) GS:ffff88023bc80000(0000) knlGS:0000000000000000
[ 1316.436884] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 1316.436884] CR2: 00007fe7fd417000 CR3: 0000000001605000 CR4: 00000000000006e0
[ 1316.436884] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1316.436884] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 1316.436884] Process kworker/u:0 (pid: 6173, threadinfo ffff8802205b4000, task ffff88022fee02c0)
[ 1316.436884] Stack:
[ 1316.436884]  ffffffff810249f1 ffff88023bc8ebc0 ffffffff810955a0 0000000000000048
[ 1316.436884]  ffffffff81624280 ffff88023bc8e250 0000000000000001 0000000000000000
[ 1316.436884]  0000000000000001 ffff88023bc83f50 7fffffffffffffff ffffffff8106ba20
[ 1316.436884] Call Trace:
[ 1316.436884]  <IRQ> 
[ 1316.436884]  [<ffffffff810249f1>] ? arch_trigger_all_cpu_backtrace+0x6c/0x7b
[ 1316.436884]  [<ffffffff810955a0>] ? __rcu_pending+0x21a/0x337
[ 1316.436884]  [<ffffffff8106ba20>] ? tick_nohz_handler+0xd0/0xd0
[ 1316.436884]  [<ffffffff810959ea>] ? rcu_check_callbacks+0x90/0xcc
[ 1316.436884]  [<ffffffff81052683>] ? update_process_times+0x31/0x63
[ 1316.436884]  [<ffffffff8106ba8a>] ? tick_sched_timer+0x6a/0x90
[ 1316.436884]  [<ffffffff81061d9a>] ? __run_hrtimer+0xac/0x135
[ 1316.436884]  [<ffffffff810624ca>] ? hrtimer_interrupt+0xdb/0x195
[ 1316.436884]  [<ffffffff8104b298>] ? __local_bh_enable+0x40/0x77
[ 1316.436884]  [<ffffffff81023fe3>] ? smp_apic_timer_interrupt+0x6f/0x82
[ 1316.436884]  [<ffffffff8134ed1e>] ? apic_timer_interrupt+0x6e/0x80
[ 1316.436884]  <EOI> 
[ 1316.436884]  [<ffffffff810358f4>] ? arch_local_irq_enable+0x4/0x8
[ 1316.436884]  [<ffffffff810397b2>] ? finish_task_switch+0x4e/0xba
[ 1316.436884]  [<ffffffff81347ef2>] ? __schedule+0x57a/0x5c3
[ 1316.436884]  [<ffffffff8105be17>] ? worker_thread+0x140/0x145
[ 1316.436884]  [<ffffffff8105bcd7>] ? manage_workers.isra.23+0x15b/0x15b
[ 1316.436884]  [<ffffffff8105eed5>] ? kthread+0x76/0x7e
[ 1316.436884]  [<ffffffff813503b4>] ? kernel_thread_helper+0x4/0x10
[ 1316.436884]  [<ffffffff8105ee5f>] ? kthread_worker_fn+0x139/0x139
[ 1316.436884]  [<ffffffff813503b0>] ? gs_change+0x13/0x13
[ 1316.436884] Code: eb 0e 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 48 ff c8 75 fb 48 ff c8 c3 48 8b 05 e8 2b 49 00 ff e0 65 48 8b 14 25 98 34 01 00 <48> 6b d2 3e 48 8d 04 bd 00 00 00 00 f7 e2 48 8d 7a 01 e9 d7 ff 
[ 1316.436884] Call Trace:
[ 1316.436884]  <IRQ>  [<ffffffff810249f1>] ? arch_trigger_all_cpu_backtrace+0x6c/0x7b
[ 1316.436884]  [<ffffffff810955a0>] ? __rcu_pending+0x21a/0x337
[ 1316.436884]  [<ffffffff8106ba20>] ? tick_nohz_handler+0xd0/0xd0
[ 1316.436884]  [<ffffffff810959ea>] ? rcu_check_callbacks+0x90/0xcc
[ 1316.436884]  [<ffffffff81052683>] ? update_process_times+0x31/0x63
[ 1316.436884]  [<ffffffff8106ba8a>] ? tick_sched_timer+0x6a/0x90
[ 1316.436884]  [<ffffffff81061d9a>] ? __run_hrtimer+0xac/0x135
[ 1316.436884]  [<ffffffff810624ca>] ? hrtimer_interrupt+0xdb/0x195
[ 1316.436884]  [<ffffffff8104b298>] ? __local_bh_enable+0x40/0x77
[ 1316.436884]  [<ffffffff81023fe3>] ? smp_apic_timer_interrupt+0x6f/0x82
[ 1316.436884]  [<ffffffff8134ed1e>] ? apic_timer_interrupt+0x6e/0x80
[ 1316.436884]  <EOI>  [<ffffffff810358f4>] ? arch_local_irq_enable+0x4/0x8
[ 1316.436884]  [<ffffffff810397b2>] ? finish_task_switch+0x4e/0xba
[ 1316.436884]  [<ffffffff81347ef2>] ? __schedule+0x57a/0x5c3
[ 1316.436884]  [<ffffffff8105be17>] ? worker_thread+0x140/0x145
[ 1316.436884]  [<ffffffff8105bcd7>] ? manage_workers.isra.23+0x15b/0x15b
[ 1316.436884]  [<ffffffff8105eed5>] ? kthread+0x76/0x7e
[ 1316.436884]  [<ffffffff813503b4>] ? kernel_thread_helper+0x4/0x10
[ 1316.436884]  [<ffffffff8105ee5f>] ? kthread_worker_fn+0x139/0x139
[ 1316.436884]  [<ffffffff813503b0>] ? gs_change+0x13/0x13
[ 1318.177517] INFO: rcu_bh detected stalls on CPUs/tasks: { 0} (detected by 1, t=15028 jiffies)
[ 1318.179705] sending NMI to all CPUs:
[ 1287.965603] NMI backtrace for cpu 0
[ 1287.965603] CPU 0 
[ 1287.965603] Modules linked in: qmi_wwan(O) cdc_wdm(O) netconsole configfs acpi_cpufreq mperf cpufreq_userspace cpufreq_stats cpufreq_conservative cpufreq_powersave xt_hl xt_multiport ip6t_LOG iptable_filter ip_tables ip6table_filter ip6_tables x_tables parport_pc ppdev lp parport bnep rfcomm binfmt_misc uinput microcode fuse nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc kvm_intel kvm 8021q garp stp tun ext2 coretemp loop snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss thinkpad_acpi joydev arc4 nvram snd_pcm snd_page_alloc snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq sierra(O) uvcvideo snd_seq_device usbserial snd_timer btusb videodev bluetooth i915 snd usbnet iwlwifi v4l2_compat_ioctl32 crc16 media mii drm_kms_helper psmouse drm iTCO_wdt iTCO_vendor_support i2c_i801 serio_raw mac80211 evdev i2c_algo_bit i2c_core cfg80211 battery ac soundcore rfkill power_supply wmi video processor button ext3 mbcache jbd sha256_generic cryptd aes_x86_64 aes_generic cbc dm_crypt dm_mod nbd sr_mod cdrom sd_mod crc_t10dif ahci libahci libata scsi_mod thermal thermal_sys uhci_hcd ehci_hcd e1000e usbcore usb_common [last unloaded: cdc_wdm]
[ 1287.965603] 
[ 1287.965603] Pid: 2762, comm: Xorg Tainted: G           O 3.2.0-2-amd64 #1 LENOVO 2776LEG/2776LEG
[ 1287.965603] RIP: 0010:[<ffffffff81040078>]  [<ffffffff81040078>] mutex_spin_on_owner+0x24/0x39
[ 1287.965603] RSP: 0018:ffff880231505920  EFLAGS: 00000046
[ 1287.965603] RAX: 0000000000000000 RBX: ffff880230cfd020 RCX: ffff880232385e40
[ 1287.965603] RDX: 0000000000000000 RSI: ffff88022fead710 RDI: ffff880230cfd020
[ 1287.965603] RBP: ffff88022fead710 R08: ffffffffa034e2a0 R09: ffffffffa0240fe0
[ 1287.965603] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002
[ 1287.965603] R13: ffff88022fead710 R14: ffff880231505fd8 R15: 0000000000000000
[ 1287.965603] FS:  00007fc030a5e880(0000) GS:ffff88023bc00000(0000) knlGS:0000000000000000
[ 1287.965603] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1287.965603] CR2: 00007fc02abaf000 CR3: 0000000230040000 CR4: 00000000000006f0
[ 1287.965603] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1287.965603] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 1287.965603] Process Xorg (pid: 2762, threadinfo ffff880231504000, task ffff88022fead710)
[ 1287.965603] Stack:
[ 1287.965603]  ffff880230cfd020 ffff88022fead710 ffffffff813487ba 0000000000000016
[ 1287.965603]  ffff8802315059f0 ffffffffa0240fe5 ffffffffa0241000 ffffffffa0240fe0
[ 1287.965603]  ffffffffa023c0fb 0000000000000020 ffff880230cfd020 ffff880230cfd000
[ 1287.965603] Call Trace:
[ 1287.965603]  [<ffffffff813487ba>] ? __mutex_lock_common.isra.5+0x3a/0x164
[ 1287.965603]  [<ffffffff8134876d>] ? mutex_lock+0x1a/0x2d
[ 1287.965603]  [<ffffffffa031ee1a>] ? intel_pipe_set_base+0x94/0x254 [i915]
[ 1287.965603]  [<ffffffff811affaa>] ? snprintf+0x39/0x3e
[ 1287.965603]  [<ffffffffa02812a9>] ? drm_crtc_helper_set_config+0x7b8/0x933 [drm_kms_helper]
[ 1287.965603]  [<ffffffff810363c7>] ? should_resched+0x5/0x23
[ 1287.965603]  [<ffffffffa027e676>] ? drm_fb_helper_pan_display+0x64/0x9c [drm_kms_helper]
[ 1287.965603]  [<ffffffff811ae437>] ? put_dec+0x2e/0x33
[ 1287.965603]  [<ffffffff811d7752>] ? fb_pan_display+0xd4/0x10b
[ 1287.965603]  [<ffffffff811e3b4c>] ? bit_update_start+0x16/0x32
[ 1287.965603]  [<ffffffff811e189f>] ? fbcon_switch+0x343/0x3c5
[ 1287.965603]  [<ffffffff81234ade>] ? redraw_screen+0xe5/0x171
[ 1287.965603]  [<ffffffff811e0f5b>] ? fbcon_blank+0x183/0x1c7
[ 1287.965603]  [<ffffffff810706e1>] ? arch_local_irq_save+0x11/0x17
[ 1287.965603]  [<ffffffff81349294>] ? _raw_spin_lock_irqsave+0x9/0x25
[ 1287.965603]  [<ffffffff81051fa6>] ? lock_timer_base.isra.29+0x23/0x47
[ 1287.965603]  [<ffffffff81052262>] ? __mod_timer+0x139/0x14b
[ 1287.965603]  [<ffffffff812361ae>] ? do_unblank_screen+0xeb/0x144
[ 1287.965603]  [<ffffffff811b2766>] ? bust_spinlocks+0x12/0x34
[ 1287.965603]  [<ffffffff8134a050>] ? oops_end+0x33/0xb6
[ 1287.965603]  [<ffffffff81349805>] ? general_protection+0x25/0x30
[ 1287.965603]  [<ffffffffa0226e0b>] ? drm_vm_close_locked+0x9c/0xa8 [drm]
[ 1287.965603]  [<ffffffffa0226dba>] ? drm_vm_close_locked+0x4b/0xa8 [drm]
[ 1287.965603]  [<ffffffffa0222ab4>] ? drm_gem_vm_close+0x26/0x46 [drm]
[ 1287.965603]  [<ffffffff810d3503>] ? remove_vma+0x29/0x6b
[ 1287.965603]  [<ffffffff810d46f3>] ? do_munmap+0x2da/0x2f3
[ 1287.965603]  [<ffffffff810d483a>] ? sys_munmap+0x3c/0x52
[ 1287.965603]  [<ffffffff8134e252>] ? system_call_fastpath+0x16/0x1b
[ 1287.965603] Code: 03 00 48 89 d8 5b c3 31 c0 f6 05 00 d7 64 00 04 55 48 89 f5 53 48 89 fb 75 0d eb 21 e8 3c 63 ff ff 85 c0 75 0e f3 90 48 39 6b 18 <75> 06 83 7d 28 00 75 e9 31 c0 48 83 7b 18 00 0f 94 c0 5b 5d c3 
[ 1287.965603] Call Trace:
[ 1287.965603]  [<ffffffff813487ba>] ? __mutex_lock_common.isra.5+0x3a/0x164
[ 1287.965603]  [<ffffffff8134876d>] ? mutex_lock+0x1a/0x2d
[ 1287.965603]  [<ffffffffa031ee1a>] ? intel_pipe_set_base+0x94/0x254 [i915]
[ 1287.965603]  [<ffffffff811affaa>] ? snprintf+0x39/0x3e
[ 1287.965603]  [<ffffffffa02812a9>] ? drm_crtc_helper_set_config+0x7b8/0x933 [drm_kms_helper]
[ 1287.965603]  [<ffffffff810363c7>] ? should_resched+0x5/0x23
[ 1287.965603]  [<ffffffffa027e676>] ? drm_fb_helper_pan_display+0x64/0x9c [drm_kms_helper]
[ 1287.965603]  [<ffffffff811ae437>] ? put_dec+0x2e/0x33
[ 1287.965603]  [<ffffffff811d7752>] ? fb_pan_display+0xd4/0x10b
[ 1287.965603]  [<ffffffff811e3b4c>] ? bit_update_start+0x16/0x32
[ 1287.965603]  [<ffffffff811e189f>] ? fbcon_switch+0x343/0x3c5
[ 1287.965603]  [<ffffffff81234ade>] ? redraw_screen+0xe5/0x171
[ 1287.965603]  [<ffffffff811e0f5b>] ? fbcon_blank+0x183/0x1c7
[ 1287.965603]  [<ffffffff810706e1>] ? arch_local_irq_save+0x11/0x17
[ 1287.965603]  [<ffffffff81349294>] ? _raw_spin_lock_irqsave+0x9/0x25
[ 1287.965603]  [<ffffffff81051fa6>] ? lock_timer_base.isra.29+0x23/0x47
[ 1287.965603]  [<ffffffff81052262>] ? __mod_timer+0x139/0x14b
[ 1287.965603]  [<ffffffff812361ae>] ? do_unblank_screen+0xeb/0x144
[ 1287.965603]  [<ffffffff811b2766>] ? bust_spinlocks+0x12/0x34
[ 1287.965603]  [<ffffffff8134a050>] ? oops_end+0x33/0xb6
[ 1287.965603]  [<ffffffff81349805>] ? general_protection+0x25/0x30
[ 1287.965603]  [<ffffffffa0226e0b>] ? drm_vm_close_locked+0x9c/0xa8 [drm]
[ 1287.965603]  [<ffffffffa0226dba>] ? drm_vm_close_locked+0x4b/0xa8 [drm]
[ 1287.965603]  [<ffffffffa0222ab4>] ? drm_gem_vm_close+0x26/0x46 [drm]
[ 1287.965603]  [<ffffffff810d3503>] ? remove_vma+0x29/0x6b
[ 1287.965603]  [<ffffffff810d46f3>] ? do_munmap+0x2da/0x2f3
[ 1287.965603]  [<ffffffff810d483a>] ? sys_munmap+0x3c/0x52
[ 1287.965603]  [<ffffffff8134e252>] ? system_call_fastpath+0x16/0x1b
[ 1318.181510] NMI backtrace for cpu 1
[ 1318.181510] CPU 1 
[ 1318.181510] Modules linked in: qmi_wwan(O) cdc_wdm(O) netconsole configfs acpi_cpufreq mperf cpufreq_userspace cpufreq_stats cpufreq_conservative cpufreq_powersave xt_hl xt_multiport ip6t_LOG iptable_filter ip_tables ip6table_filter ip6_tables x_tables parport_pc ppdev lp parport bnep rfcomm binfmt_misc uinput microcode fuse nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc kvm_intel kvm 8021q garp stp tun ext2 coretemp loop snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss thinkpad_acpi joydev arc4 nvram snd_pcm snd_page_alloc snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq sierra(O) uvcvideo snd_seq_device usbserial snd_timer btusb videodev bluetooth i915 snd usbnet iwlwifi v4l2_compat_ioctl32 crc16 media mii drm_kms_helper psmouse drm iTCO_wdt iTCO_vendor_support i2c_i801 serio_raw mac80211 evdev i2c_algo_bit i2c_core cfg80211 battery ac soundcore rfkill power_supply wmi video processor button ext3 mbcache jbd sha256_generic cryptd aes_x86_64 aes_generic cbc dm_crypt dm_mod nbd sr_mod cdrom sd_mod crc_t10dif ahci libahci libata scsi_mod thermal thermal_sys uhci_hcd ehci_hcd e1000e usbcore usb_common [last unloaded: cdc_wdm]
[ 1318.181510] 
[ 1318.181510] Pid: 0, comm: swapper/1 Tainted: G           O 3.2.0-2-amd64 #1 LENOVO 2776LEG/2776LEG
[ 1318.181510] RIP: 0010:[<ffffffff811b0be9>]  [<ffffffff811b0be9>] __const_udelay+0x17/0x20
[ 1318.181510] RSP: 0018:ffff88023bc83e20  EFLAGS: 00000847
[ 1318.181510] RAX: 00000000281dd0c0 RBX: 0000000000002710 RCX: 0000000000000040
[ 1318.181510] RDX: 000000000015238c RSI: 0000000000000200 RDI: 0000000000418958
[ 1318.181510] RBP: ffffffff8161ff80 R08: 000000008b000052 R09: 0000000000000001
[ 1318.181510] R10: 0000000231515a00 R11: 0000000231515a00 R12: ffffffff81620080
[ 1318.181510] R13: 0000000000000001 R14: ffffffff81622080 R15: 0000000000000000
[ 1318.181510] FS:  0000000000000000(0000) GS:ffff88023bc80000(0000) knlGS:0000000000000000
[ 1318.181510] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 1318.181510] CR2: 00007fe7fd417000 CR3: 0000000001605000 CR4: 00000000000006e0
[ 1318.181510] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1318.181510] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 1318.181510] Process swapper/1 (pid: 0, threadinfo ffff880232d44000, task ffff880232d160c0)
[ 1318.181510] Stack:
[ 1318.181510]  ffffffff810249f1 ffff88023bc8eab0 ffffffff810955a0 ffffffffa02c0b1d
[ 1318.181510]  ffffffff81622080 ffffffff810118f5 0000000000000001 0000000000000000
[ 1318.181510]  0000000000000001 ffff88023bc83f50 7fffffffffffffff ffffffff8106ba20
[ 1318.181510] Call Trace:
[ 1318.181510]  <IRQ> 
[ 1318.181510]  [<ffffffff810249f1>] ? arch_trigger_all_cpu_backtrace+0x6c/0x7b
[ 1318.181510]  [<ffffffff810955a0>] ? __rcu_pending+0x21a/0x337
[ 1318.181510]  [<ffffffffa02c0b1d>] ? iwl_irq_tasklet+0x5cb/0x6df [iwlwifi]
[ 1318.181510]  [<ffffffff810118f5>] ? arch_local_irq_save+0x5/0x13
[ 1318.181510]  [<ffffffff8106ba20>] ? tick_nohz_handler+0xd0/0xd0
[ 1318.181510]  [<ffffffff81095a09>] ? rcu_check_callbacks+0xaf/0xcc
[ 1318.181510]  [<ffffffff81052683>] ? update_process_times+0x31/0x63
[ 1318.181510]  [<ffffffff8106ba8a>] ? tick_sched_timer+0x6a/0x90
[ 1318.181510]  [<ffffffff81061d9a>] ? __run_hrtimer+0xac/0x135
[ 1318.181510]  [<ffffffff810624ca>] ? hrtimer_interrupt+0xdb/0x195
[ 1318.181510]  [<ffffffff81013a2c>] ? sched_clock+0x5/0x8
[ 1318.181510]  [<ffffffff81023fe3>] ? smp_apic_timer_interrupt+0x6f/0x82
[ 1318.181510]  [<ffffffff8134ed1e>] ? apic_timer_interrupt+0x6e/0x80
[ 1318.181510]  <EOI> 
[ 1318.181510]  [<ffffffffa0138398>] ? arch_local_irq_enable+0x4/0x8 [processor]
[ 1318.181510]  [<ffffffffa0138f18>] ? acpi_idle_enter_bm+0x220/0x262 [processor]
[ 1318.181510]  [<ffffffff8126b8ab>] ? cpuidle_idle_call+0xec/0x179
[ 1318.181510]  [<ffffffff8100d248>] ? cpu_idle+0xa5/0xf2
[ 1318.181510]  [<ffffffff810706c2>] ? arch_local_irq_restore+0x2/0x8
[ 1318.181510]  [<ffffffff8133b77f>] ? start_secondary+0x1d5/0x1db
[ 1318.181510] Code: 00 00 48 ff c8 75 fb 48 ff c8 c3 48 8b 05 e8 2b 49 00 ff e0 65 48 8b 14 25 98 34 01 00 48 6b d2 3e 48 8d 04 bd 00 00 00 00 f7 e2 <48> 8d 7a 01 e9 d7 ff ff ff 48 69 ff c7 10 00 00 e9 d4 ff ff ff 
[ 1318.181510] Call Trace:
[ 1318.181510]  <IRQ>  [<ffffffff810249f1>] ? arch_trigger_all_cpu_backtrace+0x6c/0x7b
[ 1318.181510]  [<ffffffff810955a0>] ? __rcu_pending+0x21a/0x337
[ 1318.181510]  [<ffffffffa02c0b1d>] ? iwl_irq_tasklet+0x5cb/0x6df [iwlwifi]
[ 1318.181510]  [<ffffffff810118f5>] ? arch_local_irq_save+0x5/0x13
[ 1318.181510]  [<ffffffff8106ba20>] ? tick_nohz_handler+0xd0/0xd0
[ 1318.181510]  [<ffffffff81095a09>] ? rcu_check_callbacks+0xaf/0xcc
[ 1318.181510]  [<ffffffff81052683>] ? update_process_times+0x31/0x63
[ 1318.181510]  [<ffffffff8106ba8a>] ? tick_sched_timer+0x6a/0x90
[ 1318.181510]  [<ffffffff81061d9a>] ? __run_hrtimer+0xac/0x135
[ 1318.181510]  [<ffffffff810624ca>] ? hrtimer_interrupt+0xdb/0x195
[ 1318.181510]  [<ffffffff81013a2c>] ? sched_clock+0x5/0x8
[ 1318.181510]  [<ffffffff81023fe3>] ? smp_apic_timer_interrupt+0x6f/0x82
[ 1318.181510]  [<ffffffff8134ed1e>] ? apic_timer_interrupt+0x6e/0x80
[ 1318.181510]  <EOI>  [<ffffffffa0138398>] ? arch_local_irq_enable+0x4/0x8 [processor]
[ 1318.181510]  [<ffffffffa0138f18>] ? acpi_idle_enter_bm+0x220/0x262 [processor]
[ 1318.181510]  [<ffffffff8126b8ab>] ? cpuidle_idle_call+0xec/0x179
[ 1318.181510]  [<ffffffff8100d248>] ? cpu_idle+0xa5/0xf2
[ 1318.181510]  [<ffffffff810706c2>] ? arch_local_irq_restore+0x2/0x8
[ 1318.181510]  [<ffffffff8133b77f>] ? start_secondary+0x1d5/0x1db




This doesn't really tell me anything, but I'm hoping that you see
something usable here...



Bjørn
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux