[Xen-devel] 2.6.37 dom0 non-fatal BUG: sleeping function called from invalid context at kernel/mutex.c:85

[Pasi Kärkkäinen <pasik@xxxxxx>]

Hello,

First of all.. big thanks to everyone involved in upstreaming Xen dom0 bits! 

I just tried upstream pvops 2.6.37 dom0 kernel on one of my machines, and it 
worked
out-of-the-box ! Even nouveau kms/modesetting worked just fine.

There was non-fatal BUG/traceback though:

Full dmesg log available at: 
http://pasik.reaktio.net/xen/logs/dmesg-2.6.37-1.xendom0.fc15.x86_64-kms-modesetting.txt

[    9.930809] BUG: sleeping function called from invalid context at 
kernel/mutex.c:85
[    9.931616] in_atomic(): 0, irqs_disabled(): 1, pid: 572, name: kworker/0:2
[    9.932403] Pid: 572, comm: kworker/0:2 Not tainted 
2.6.37-1.xendom0.fc15.x86_64 #1
[    9.933188] Call Trace:
[    9.933973]  [<ffffffff81042005>] __might_sleep+0xeb/0xf0
[    9.934758]  [<ffffffff81476e9e>] mutex_lock+0x24/0x50
[    9.935533]  [<ffffffff810abe14>] free_desc+0x2e/0x5f
[    9.936296]  [<ffffffff810abe80>] irq_free_descs+0x3b/0x71
[    9.937064]  [<ffffffff812ac0c8>] irq_free_desc+0x13/0x15
[    9.937812]  [<ffffffff812aca85>] xen_destroy_irq+0xe1/0xf5
[    9.938545]  [<ffffffff81477d3f>] ? _raw_spin_unlock_irqrestore+0x17/0x19
[    9.939270]  [<ffffffff813b70b9>] xen_teardown_msi_irq+0xe/0x10
[    9.939982]  [<ffffffff81255630>] default_teardown_msi_irqs+0x57/0x80
[    9.940674]  [<ffffffff812550f6>] free_msi_irqs+0x8b/0xe9
[    9.941352]  [<ffffffff81255ff4>] pci_disable_msix+0x35/0x39
[    9.942030]  [<ffffffffa005111a>] xhci_cleanup_msix+0x31/0x51 [xhci_hcd]
[    9.942705]  [<ffffffffa0051d35>] xhci_suspend+0x199/0x1ab [xhci_hcd]
[    9.943370]  [<ffffffffa00565ce>] xhci_pci_suspend+0x23/0x25 [xhci_hcd]
[    9.944029]  [<ffffffff81350355>] suspend_common+0x65/0xe2
[    9.944677]  [<ffffffff810073df>] ? xen_restore_fl_direct_end+0x0/0x1
[    9.945318]  [<ffffffff813503eb>] hcd_pci_runtime_suspend+0x19/0x43
[    9.945955]  [<ffffffff8124549b>] pci_pm_runtime_suspend+0x58/0xea
[    9.946587]  [<ffffffff81245443>] ? pci_pm_runtime_suspend+0x0/0xea
[    9.947221]  [<ffffffff812ef7a0>] rpm_suspend+0x285/0x3c5
[    9.947836]  [<ffffffff810073df>] ? xen_restore_fl_direct_end+0x0/0x1
[    9.948445]  [<ffffffff8107d31f>] ? arch_local_irq_restore+0xb/0xd
[    9.949051]  [<ffffffff81477d3f>] ? _raw_spin_unlock_irqrestore+0x17/0x19
[    9.949648]  [<ffffffff8107d32c>] ? arch_local_irq_disable+0xb/0xd
[    9.950230]  [<ffffffff812f0357>] __pm_runtime_suspend+0x51/0x6d
[    9.950801]  [<ffffffff8124515b>] ? pci_pm_runtime_idle+0x0/0x4d
[    9.951359]  [<ffffffff812451a2>] pci_pm_runtime_idle+0x47/0x4d
[    9.951906]  [<ffffffff812efaa5>] rpm_idle+0x14d/0x18f
[    9.952445]  [<ffffffff812f042e>] ? pm_runtime_work+0x0/0xa0
[    9.952970]  [<ffffffff812f0499>] pm_runtime_work+0x6b/0xa0
[    9.953490]  [<ffffffff810665ab>] process_one_work+0x18c/0x285
[    9.954010]  [<ffffffff810673b2>] worker_thread+0x104/0x1a4
[    9.954526]  [<ffffffff810672ae>] ? worker_thread+0x0/0x1a4
[    9.955038]  [<ffffffff8106a9e3>] kthread+0x82/0x8a
[    9.955545]  [<ffffffff8100bae4>] kernel_thread_helper+0x4/0x10
[    9.956060]  [<ffffffff8100aee3>] ? int_ret_from_sys_call+0x7/0x1b
[    9.956575]  [<ffffffff814782dd>] ? retint_restore_args+0x5/0x6
[    9.957088]  [<ffffffff8100bae0>] ? kernel_thread_helper+0x0/0x10


-- Pasi


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