Re: per-cpu related?

[Ingo Molnar]

* Yinghai Lu <yhlu.kernel@xxxxxxxxx> wrote:

> thanks
> 
> could be caused by max_low_pfn_mapped patch...because hpet still use 
> fixmap address that is cleared by others.
> 
> will check that.

got another weird crash:

[   12.431572] device: 'sda1': device_add
[   12.435498] PM: Adding info for No Bus:sda1
[   12.439795] device: 'sda2': device_add
[   12.443606] PM: Adding info for No Bus:sda2
[   12.447945] ------------[ cut here ]------------
[   12.452585] WARNING: at kernel/mutex.c:134 mutex_lock_nested+0x327/0x350()
[   12.459481] Modules linked in:
[   12.462597] Pid: 1, comm: swapper Not tainted 2.6.26-rc9-tip #14453
[   12.468884] 
[   12.468885] Call Trace:
[   12.472882]  [<ffffffff802522b3>] warn_on_slowpath+0x73/0xc0
[   12.478565]  [<ffffffff80280520>] ? trace_hardirqs_on+0x20/0x40
[   12.484509]  [<ffffffff804505d8>] ? debug_locks_off+0x8/0x70
[   12.490190]  [<ffffffff802acb03>] ? ftrace_record_ip+0x193/0x2b0
[   12.496220]  [<ffffffff80280520>] ? trace_hardirqs_on+0x20/0x40
[   12.502159]  [<ffffffff8020c9f4>] ? mcount_call+0x5/0x31
[   12.507494]  [<ffffffff8069b7fd>] ? scsi_disk_put+0x3d/0x80
[   12.513089]  [<ffffffff808a55f7>] mutex_lock_nested+0x327/0x350
[   12.519030]  [<ffffffff8069b7fd>] ? scsi_disk_put+0x3d/0x80
[   12.524624]  [<ffffffff8069b7fd>] scsi_disk_put+0x3d/0x80
[   12.530044]  [<ffffffff8069c5db>] sd_release+0x5b/0xa0
[   12.535207]  [<ffffffff8032e708>] __blkdev_put+0x1d8/0x200
[   12.540713]  [<ffffffff8020c9f4>] ? mcount_call+0x5/0x31
[   12.546047]  [<ffffffff8032e753>] blkdev_put+0x23/0x40
[   12.551209]  [<ffffffff803576c5>] register_disk+0x1a5/0x1c0
[   12.556806]  [<ffffffff80441c2a>] add_disk+0x5a/0xc0
[   12.561794]  [<ffffffff8069c004>] sd_probe+0x2e4/0x440
[   12.566955]  [<ffffffff8050a644>] driver_probe_device+0x104/0x260
[   12.573068]  [<ffffffff8050a860>] ? __device_attach+0x0/0x40
[   12.578750]  [<ffffffff8050a881>] __device_attach+0x21/0x40
[   12.584347]  [<ffffffff805095bb>] bus_for_each_drv+0x7b/0xc0
[   12.590027]  [<ffffffff8050a9a9>] device_attach+0xa9/0xc0
[   12.595450]  [<ffffffff805092f5>] bus_attach_device+0x75/0xa0
[   12.601216]  [<ffffffff80507619>] device_add+0x599/0x670
[   12.606550]  [<ffffffff8020c9f4>] ? mcount_call+0x5/0x31
[   12.611884]  [<ffffffff806277e5>] scsi_sysfs_add_sdev+0x75/0x2a0
[   12.617914]  [<ffffffff8062461b>] scsi_probe_and_add_lun+0xbbb/0xc70
[   12.624289]  [<ffffffff8062586a>] __scsi_add_device+0x13a/0x150
[   12.630229]  [<ffffffff806ada2b>] ata_scsi_scan_host+0xeb/0x330
[   12.636171]  [<ffffffff806aa376>] ata_host_register+0x286/0x310
[   12.642111]  [<ffffffff8050e150>] ? devres_open_group+0xc0/0xf0
[   12.648053]  [<ffffffff806b7380>] ? ata_sff_interrupt+0x0/0x2c0
[   12.653995]  [<ffffffff806b478f>] ata_pci_sff_activate_host+0x12f/0x240
[   12.660628]  [<ffffffff80892af4>] piix_init_one+0x334/0x7f0
[   12.666225]  [<ffffffff804660c3>] pci_call_probe+0xa3/0x100
[   12.671817]  [<ffffffff804662d9>] pci_device_probe+0x99/0xd0
[   12.677499]  [<ffffffff8050a644>] driver_probe_device+0x104/0x260
[   12.683615]  [<ffffffff8050a84b>] __driver_attach+0xab/0xc0
[   12.689208]  [<ffffffff8050a7a0>] ? __driver_attach+0x0/0xc0
[   12.694891]  [<ffffffff80509a4b>] bus_for_each_dev+0x7b/0xc0
[   12.700570]  [<ffffffff8050a324>] driver_attach+0x34/0x50
[   12.705991]  [<ffffffff80508f96>] bus_add_driver+0x116/0x2a0
[   12.711670]  [<ffffffff8050ab67>] driver_register+0x87/0x1a0
[   12.717353]  [<ffffffff80454ff7>] ? __spin_lock_init+0x47/0x90
[   12.723206]  [<ffffffff80deda70>] ? piix_init+0x0/0x60
[   12.728368]  [<ffffffff804665ee>] __pci_register_driver+0x7e/0xe0
[   12.734483]  [<ffffffff80dedaa1>] piix_init+0x31/0x60
[   12.739558]  [<ffffffff80dbbaac>] kernel_init+0x26f/0x39c
[   12.744981]  [<ffffffff808a79af>] ? _spin_unlock_irq+0x3f/0x70
[   12.750834]  [<ffffffff808a7313>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[   12.757297]  [<ffffffff80280499>] ? trace_hardirqs_on_caller+0x169/0x1d0
[   12.764019]  [<ffffffff8020e0c9>] child_rip+0xa/0x11
[   12.769006]  [<ffffffff8020d3de>] ? restore_args+0x0/0x30
[   12.774429]  [<ffffffff80dbb83d>] ? kernel_init+0x0/0x39c
[   12.779850]  [<ffffffff8020e0bf>] ? child_rip+0x0/0x11
[   12.785012] 
[   12.786538] ---[ end trace 0361c3a3643346eb ]---
[   12.791214] BUG: scheduling while atomic: swapper/1/0x92899fb1
[   12.797072] INFO: lockdep is turned off.
[   12.801020] Modules linked in:

task structure got corrupted here too - the preempt count is 0x92899fb1.

	Ingo
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