Re: [PATCH] x86, irq: Keep IRQ assignment for PCI devices during suspend/hibernation

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On 2014/7/31 18:39, Borislav Petkov wrote:
> On Thu, Jul 31, 2014 at 08:33:26AM +0800, Jiang Liu wrote:
>> Sorry for the incovenience, something is wrong when synchronizing
>> the patch. I have found that "pm" should be "power" when building and
>> testing this patch on my test machine. And I have also fixed it on
>> my development machine, but forgot to do "stg refresh" before "git
>> format-patch",
> 
> Yeah, use git only :-)
> 
> Anyway, still b0rked although I can get further and actually suspend.
> Full splat below.
> 
> The IOMMU PFs point to
> 
> 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV635 [Radeon HD 3650/3750/4570/4580]
> 
> and
> 
> 00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
> 
> respectively.
> 
> and the IOPFs are all this OHCI controller. Which points at a timing
> problem during suspend, I'm being told, when the device gets returned
> to the BIOS but IOMMU is still on and filters accesses. Or something to
> that effect. In any case, still b0rked.
Hi Borislav,
	I might have a theory based on above statement.
1) There's a race window between device_shutdown() and
syscore_shutdown(). USB device may be returned to BIOS
during device_shutdown() and IOMMU units are disabled
during syscore_shutdown().
2) Printing debug messages enlarges the race window,
especially when using serial console.
Then it triggers warning message "AMD-Vi: Event logged [IO_PAGE_FAULT
device=00:12.0 domain=0x0009 address=0x00000000ffffffc0 flags=0x0010]".

But I have no AMD platforms to verify this theory. Could you
please help to try adding delays between device_shutdown()
and syscore_shutdown() in function kernel_power_off()?
Regards!
Gerry

> 
> -> start suspend to disk:
> 
> [   31.422901] hib.sh (3786): drop_caches: 3
> [   31.427932] PM: Hibernation mode set to 'shutdown'
> [   31.444522] PM: Syncing filesystems ... done.
> [   31.452558] Freezing user space processes ... (elapsed 0.002 seconds) done.
> [   31.462404] PM: Marking nosave pages: [mem 0x0009e000-0x000fffff]
> [   31.468544] PM: Marking nosave pages: [mem 0xba9b8000-0xbca4dfff]
> [   31.474868] PM: Marking nosave pages: [mem 0xbca4f000-0xbcc54fff]
> [   31.480995] PM: Marking nosave pages: [mem 0xbd083000-0xbd7f3fff]
> [   31.487136] PM: Marking nosave pages: [mem 0xbd800000-0x100000fff]
> [   31.493891] PM: Basic memory bitmaps created
> [   31.498178] PM: Preallocating image memory... done (allocated 143539 pages)
> [   32.001145] PM: Allocated 574156 kbytes in 0.49 seconds (1171.74 MB/s)
> [   32.007690] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
> [   33.220531] serial 00:06: activated
> [   33.220959] [drm] PCIE gen 2 link speeds already enabled
> [   33.228236] [drm] PCIE GART of 512M enabled (table at 0x0000000000040000).
> [   33.228340] radeon 0000:01:00.0: WB enabled
> [   33.228347] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000020000c00 and cpu addr 0xffff88042939ac00
> [   33.233314] snd_hda_intel 0000:01:00.1: irq 49 for MSI/MSI-X
> [   33.259732] [drm] ring test on 0 succeeded in 0 usecs
> [   33.259890] [drm] ib test on ring 0 succeeded in 0 usecs
> [   33.319713] r8169 0000:02:00.0 eth0: link down
> [   33.448144] PM: thaw of devices complete after 229.835 msecs
> [   33.455071] PM: writing image.
> [   33.535747] ata5: SATA link down (SStatus 0 SControl 300)
> [   33.541393] ata6: SATA link down (SStatus 0 SControl 300)
> [   33.707603] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [   33.714056] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [   33.720477] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
> [   33.728938] ata4.00: configured for UDMA/133
> [   33.734567] ata3.00: configured for UDMA/133
> [   33.739453] ata2.00: configured for UDMA/133
> [   33.745111] PM: Using 3 thread(s) for compression.
> [   33.745111] PM: Compressing and saving image data (149256 pages)...
> [   33.756336] PM: Image saving progress:   0%
> [   33.915592] PM: Image saving progress:  10%
> [   33.995331] PM: Image saving progress:  20%
> [   34.123934] PM: Image saving progress:  30%
> [   34.362314] PM: Image saving progress:  40%
> [   34.463433] PM: Image saving progress:  50%
> [   34.550636] PM: Image saving progress:  60%
> [   34.651601] PM: Image saving progress:  70%
> [   34.756381] PM: Image saving progress:  80%
> [   34.863658] PM: Image saving progress:  90%
> [   34.973828] PM: Image saving progress: 100%
> [   34.993966] PM: Image saving done.
> [   34.998214] PM: Wrote 597024 kbytes in 1.23 seconds (485.38 MB/s)
> [   35.005742] PM: S|
> [   35.122141] r8169 0000:02:00.0 eth0: link up
> [   35.368945] sd 3:0:0:0: [sdc] Synchronizing SCSI cache
> [   35.376839] sd 3:0:0:0: [sdc] Stopping disk
> [   35.898610] sd 2:0:0:0: [sdb] Synchronizing SCSI cache
> [   35.906277] sd 2:0:0:0: [sdb] Stopping disk
> [   36.783830] sd 1:0:0:0: [sda] Synchronizing SCSI cache
> [   36.792035] sd 1:0:0:0: [sda] Stopping disk
> [   36.833993] pcieport 0000:00:04.0: System wakeup enabled by ACPI
> [   36.855314] ------------[ cut here ]------------
> [   36.862344] WARNING: CPU: 2 PID: 3786 at fs/proc/generic.c:521 remove_proc_entry+0x19c/0x1b0()
> [   36.864089] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0014 address=0x0000000020001000 flags=0x0000]
> [   36.886423] remove_proc_entry: removing non-empty directory 'irq/23', leaking at least 'ehci_hcd:usb3'
> [   36.898325] Modules linked in: xt_iprange ipt_MASQUERADE iptable_mangle iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter ip_tables x_tables cpufreq_powersave cpufreq_userspace cpufreq_stats cpufreq_conservative ipv6 vfat fat fuse dm_crypt dm_mod amd64_edac_mod edac_core fam15h_power k10temp radeon drm_kms_helper ttm acpi_cpufreq r8169
> [   36.934730] CPU: 3 PID: 3786 Comm: hib.sh Not tainted 3.16.0-rc7+ #1
> [   36.942103] Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 EVO R2.0, BIOS 1503 01/16/2013
> [   36.953051]  0000000000000009 ffff88041e4ebb40 ffffffff81617d4e ffff88041e4ebb88
> [   36.961616]  ffff88041e4ebb78 ffffffff8104f82c ffff880037a91e00 ffff880429842e30
> [   36.970232]  0000000000000002 ffff88041e4ebc4e ffff880037a91eb9 ffff88041e4ebbd8
> [   36.978822] Call Trace:
> [   36.982324]  [<ffffffff81617d4e>] dump_stack+0x4e/0x7a
> [   36.988496]  [<ffffffff8104f82c>] warn_slowpath_common+0x8c/0xc0
> [   36.995558]  [<ffffffff8104f8ac>] warn_slowpath_fmt+0x4c/0x50
> [   37.002395]  [<ffffffff811dc11c>] remove_proc_entry+0x19c/0x1b0
> [   37.011279]  [<ffffffff810b479e>] unregister_irq_proc+0xce/0xf0
> [   37.020129]  [<ffffffff810ae689>] free_desc+0x39/0x90
> [   37.028097]  [<ffffffff810ae729>] irq_free_descs+0x49/0x90
> [   37.036478]  [<ffffffff810b3f36>] irq_dispose_mapping+0x36/0x60
> [   37.045329]  [<ffffffff8103c2d2>] mp_unmap_irq+0x92/0xc0
> [   37.053540]  [<ffffffff81033a81>] acpi_unregister_gsi_ioapic+0x31/0x40
> [   37.063012]  [<ffffffff81033987>] acpi_unregister_gsi+0x17/0x20
> [   37.071870]  [<ffffffff81340c44>] acpi_pci_irq_disable+0x5c/0x63
> [   37.080756]  [<ffffffff81532b6e>] pcibios_disable_device+0x2e/0x40
> [   37.089838]  [<ffffffff8130bb22>] do_pci_disable_device+0x52/0x60
> [   37.098860]  [<ffffffff8130bb88>] pci_disable_device+0x58/0xd0
> [   37.107561]  [<ffffffff81459182>] usb_hcd_pci_shutdown+0x42/0x50
> [   37.116425]  [<ffffffff8130db28>] pci_device_shutdown+0x28/0x40
> [   37.125248]  [<ffffffff813cf112>] device_shutdown+0xd2/0x1f0
> [   37.133792]  [<ffffffff810754b5>] kernel_power_off+0x35/0x80
> [   37.142348]  [<ffffffff81617455>] power_down+0x45/0xa1
> [   37.150335]  [<ffffffff810a527d>] hibernate+0x19d/0x1d0
> [   37.158377]  [<ffffffff810a1c9c>] state_store+0xec/0x100
> [   37.166526]  [<ffffffff812d448f>] kobj_attr_store+0xf/0x20
> [   37.174858]  [<ffffffff811e91d0>] sysfs_kf_write+0x50/0x70
> [   37.183144]  [<ffffffff811e84e5>] kernfs_fop_write+0x105/0x190
> [   37.191700]  [<ffffffff81171dcd>] vfs_write+0xbd/0x1d0
> [   37.199609]  [<ffffffff81172942>] SyS_write+0x52/0xc0
> [   37.207357]  [<ffffffff81620216>] system_call_fastpath+0x1a/0x1f
> [   37.216091] ---[ end trace 555995a6cab7d4fe ]---
> [   37.222168] ------------[ cut here ]------------
> [   37.227753] WARNING: CPU: 2 PID: 3786 at fs/proc/generic.c:521 remove_proc_entry+0x19c/0x1b0()
> [   37.237344] remove_proc_entry: removing non-empty directory 'irq/22', leaking at least 'ohci_hcd:usb7'
> [   37.247595] Modules linked in: xt_iprange ipt_MASQUERADE iptable_mangle iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter ip_tables x_tables cpufreq_powersave cpufreq_userspace cpufreq_stats cpufreq_conservative ipv6 vfat fat fuse dm_crypt dm_mod amd64_edac_mod edac_core fam15h_power k10temp radeon drm_kms_helper ttm acpi_cpufreq r8169
> [   37.284164] CPU: 3 PID: 3786 Comm: hib.sh Tainted: G        W     3.16.0-rc7+ #1
> [   37.292669] Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 EVO R2.0, BIOS 1503 01/16/2013
> [   37.303684]  0000000000000009 ffff88041e4ebb40 ffffffff81617d4e ffff88041e4ebb88
> [   37.312346]  ffff88041e4ebb78 ffffffff8104f82c ffff8804298b7500 ffff880429b2e630
> [   37.321035]  0000000000000002 ffff88041e4ebc4e ffff8804298b75b9 ffff88041e4ebbd8
> [   37.329713] Call Trace:
> [   37.333294]  [<ffffffff81617d4e>] dump_stack+0x4e/0x7a
> [   37.339569]  [<ffffffff8104f82c>] warn_slowpath_common+0x8c/0xc0
> [   37.346722]  [<ffffffff8104f8ac>] warn_slowpath_fmt+0x4c/0x50
> [   37.353623]  [<ffffffff811dc11c>] remove_proc_entry+0x19c/0x1b0
> [   37.360688]  [<ffffffff810b479e>] unregister_irq_proc+0xce/0xf0
> [   37.367776]  [<ffffffff810ae689>] free_desc+0x39/0x90
> [   37.374023]  [<ffffffff810ae729>] irq_free_descs+0x49/0x90
> [   37.382851]  [<ffffffff810b3f36>] irq_dispose_mapping+0x36/0x60
> [   37.392223]  [<ffffffff8103c2d2>] mp_unmap_irq+0x92/0xc0
> [   37.400915]  [<ffffffff81033a81>] acpi_unregister_gsi_ioapic+0x31/0x40
> [   37.410875]  [<ffffffff81033987>] acpi_unregister_gsi+0x17/0x20
> [   37.420244]  [<ffffffff81340c44>] acpi_pci_irq_disable+0x5c/0x63
> [   37.429713]  [<ffffffff81532b6e>] pcibios_disable_device+0x2e/0x40
> [   37.439354]  [<ffffffff8130bb22>] do_pci_disable_device+0x52/0x60
> [   37.448906]  [<ffffffff8130bb88>] pci_disable_device+0x58/0xd0
> [   37.458130]  [<ffffffff81459182>] usb_hcd_pci_shutdown+0x42/0x50
> [   37.467572]  [<ffffffff8130db28>] pci_device_shutdown+0x28/0x40
> [   37.476968]  [<ffffffff813cf112>] device_shutdown+0xd2/0x1f0
> [   37.486079]  [<ffffffff810754b5>] kernel_power_off+0x35/0x80
> [   37.495206]  [<ffffffff81617455>] power_down+0x45/0xa1
> [   37.503789]  [<ffffffff810a527d>] hibernate+0x19d/0x1d0
> [   37.512466]  [<ffffffff810a1c9c>] state_store+0xec/0x100
> [   37.521217]  [<ffffffff812d448f>] kobj_attr_store+0xf/0x20
> [   37.530104]  [<ffffffff811e91d0>] sysfs_kf_write+0x50/0x70
> [   37.538959]  [<ffffffff811e84e5>] kernfs_fop_write+0x105/0x190
> [   37.548096]  [<ffffffff81171dcd>] vfs_write+0xbd/0x1d0
> [   37.556513]  [<ffffffff81172942>] SyS_write+0x52/0xc0
> [   37.564743]  [<ffffffff81620216>] system_call_fastpath+0x1a/0x1f
> [   37.573837] ---[ end trace 555995a6cab7d4ff ]---
> [   37.583013] ------------[ cut here ]------------
> [   37.588736] WARNING: CPU: 0 PID: 3786 at fs/proc/generic.c:521 remove_proc_entry+0x19c/0x1b0()
> [   37.598369] remove_proc_entry: removing non-empty directory 'irq/21', leaking at least 'ehci_hcd:usb2'
> [   37.608655] Modules linked in: xt_iprange ipt_MASQUERADE iptable_mangle iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter ip_tables x_tables cpufreq_powersave cpufreq_userspace cpufreq_stats cpufreq_conservative ipv6 vfat fat fuse dm_crypt dm_mod amd64_edac_mod edac_core fam15h_power k10temp radeon drm_kms_helper ttm acpi_cpufreq r8169
> [   37.647451] CPU: 4 PID: 3786 Comm: hib.sh Tainted: G        W     3.16.0-rc7+ #1
> [   37.658115] Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 EVO R2.0, BIOS 1503 01/16/2013
> [   37.671304]  0000000000000009 ffff88041e4ebb40 ffffffff81617d4e ffff88041e4ebb88
> [   37.682276]  ffff88041e4ebb78 ffffffff8104f82c ffff880429f6c000 ffff880429842e30
> [   37.693179]  0000000000000002 ffff88041e4ebc4e ffff880429f6c0b9 ffff88041e4ebbd8
> [   37.704132] Call Trace:
> [   37.709898]  [<ffffffff81617d4e>] dump_stack+0x4e/0x7a
> [   37.718393]  [<ffffffff8104f82c>] warn_slowpath_common+0x8c/0xc0
> [   37.727774]  [<ffffffff8104f8ac>] warn_slowpath_fmt+0x4c/0x50
> [   37.736888]  [<ffffffff811dc11c>] remove_proc_entry+0x19c/0x1b0
> [   37.746167]  [<ffffffff810b479e>] unregister_irq_proc+0xce/0xf0
> [   37.755444]  [<ffffffff810ae689>] free_desc+0x39/0x90
> [   37.763897]  [<ffffffff810ae729>] irq_free_descs+0x49/0x90
> [   37.772742]  [<ffffffff810b3f36>] irq_dispose_mapping+0x36/0x60
> [   37.782019]  [<ffffffff8103c2d2>] mp_unmap_irq+0x92/0xc0
> [   37.790656]  [<ffffffff81033a81>] acpi_unregister_gsi_ioapic+0x31/0x40
> [   37.800534]  [<ffffffff81033987>] acpi_unregister_gsi+0x17/0x20
> [   37.809810]  [<ffffffff81340c44>] acpi_pci_irq_disable+0x5c/0x63
> [   37.819130]  [<ffffffff81532b6e>] pcibios_disable_device+0x2e/0x40
> [   37.828650]  [<ffffffff8130bb22>] do_pci_disable_device+0x52/0x60
> [   37.838120]  [<ffffffff8130bb88>] pci_disable_device+0x58/0xd0
> [   37.847324]  [<ffffffff81459182>] usb_hcd_pci_shutdown+0x42/0x50
> [   37.856698]  [<ffffffff8130db28>] pci_device_shutdown+0x28/0x40
> [   37.866005]  [<ffffffff813cf112>] device_shutdown+0xd2/0x1f0
> [   37.875035]  [<ffffffff810754b5>] kernel_power_off+0x35/0x80
> [   37.884060]  [<ffffffff81617455>] power_down+0x45/0xa1
> [   37.892580]  [<ffffffff810a527d>] hibernate+0x19d/0x1d0
> [   37.901173]  [<ffffffff810a1c9c>] state_store+0xec/0x100
> [   37.909851]  [<ffffffff812d448f>] kobj_attr_store+0xf/0x20
> [   37.918705]  [<ffffffff811e91d0>] sysfs_kf_write+0x50/0x70
> [   37.927558]  [<ffffffff811e84e5>] kernfs_fop_write+0x105/0x190
> [   37.936710]  [<ffffffff81171dcd>] vfs_write+0xbd/0x1d0
> [   37.945157]  [<ffffffff81172942>] SyS_write+0x52/0xc0
> [   37.953358]  [<ffffffff81620216>] system_call_fastpath+0x1a/0x1f
> [   37.962486] ---[ end trace 555995a6cab7d500 ]---
> [   37.971327] ------------[ cut here ]------------
> [   37.978904] WARNING: CPU: 2 PID: 3786 at fs/proc/generic.c:521 remove_proc_entry+0x19c/0x1b0()
> [   37.990542] remove_proc_entry: removing non-empty directory 'irq/20', leaking at least 'ohci_hcd:usb5'
> [   38.002874] Modules linked in: xt_iprange ipt_MASQUERADE iptable_mangle iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter ip_tables x_tables cpufreq_powersave cpufreq_userspace cpufreq_stats cpufreq_conservative ipv6 vfat fat fuse dm_crypt dm_mod amd64_edac_mod edac_core fam15h_power k10temp radeon drm_kms_helper ttm acpi_cpufreq r8169
> [   38.039571] CPU: 3 PID: 3786 Comm: hib.sh Tainted: G        W     3.16.0-rc7+ #1
> [   38.048075] Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 EVO R2.0, BIOS 1503 01/16/2013
> [   38.059363]  0000000000000009 ffff88041e4ebb40 ffffffff81617d4e ffff88041e4ebb88
> [   38.070381]  ffff88041e4ebb78 ffffffff8104f82c ffff880429843e00 ffff880429b2e630
> [   38.081335]  0000000000000002 ffff88041e4ebc4e ffff880429843eb9 ffff88041e4ebbd8
> [   38.092303] Call Trace:
> [   38.098120]  [<ffffffff81617d4e>] dump_stack+0x4e/0x7a
> [   38.106619]  [<ffffffff8104f82c>] warn_slowpath_common+0x8c/0xc0
> [   38.115986]  [<ffffffff8104f8ac>] warn_slowpath_fmt+0x4c/0x50
> [   38.125119]  [<ffffffff811dc11c>] remove_proc_entry+0x19c/0x1b0
> [   38.134401]  [<ffffffff810b479e>] unregister_irq_proc+0xce/0xf0
> [   38.143665]  [<ffffffff810ae689>] free_desc+0x39/0x90
> [   38.152113]  [<ffffffff810ae729>] irq_free_descs+0x49/0x90
> [   38.160971]  [<ffffffff810b3f36>] irq_dispose_mapping+0x36/0x60
> [   38.170251]  [<ffffffff8103c2d2>] mp_unmap_irq+0x92/0xc0
> [   38.178918]  [<ffffffff81033a81>] acpi_unregister_gsi_ioapic+0x31/0x40
> [   38.188836]  [<ffffffff81033987>] acpi_unregister_gsi+0x17/0x20
> [   38.198133]  [<ffffffff81340c44>] acpi_pci_irq_disable+0x5c/0x63
> [   38.207534]  [<ffffffff81532b6e>] pcibios_disable_device+0x2e/0x40
> [   38.217056]  [<ffffffff8130bb22>] do_pci_disable_device+0x52/0x60
> [   38.226486]  [<ffffffff8130bb88>] pci_disable_device+0x58/0xd0
> [   38.235667]  [<ffffffff81459182>] usb_hcd_pci_shutdown+0x42/0x50
> [   38.245025]  [<ffffffff8130db28>] pci_device_shutdown+0x28/0x40
> [   38.254323]  [<ffffffff813cf112>] device_shutdown+0xd2/0x1f0
> [   38.263346]  [<ffffffff810754b5>] kernel_power_off+0x35/0x80
> [   38.272404]  [<ffffffff81617455>] power_down+0x45/0xa1
> [   38.280890]  [<ffffffff810a527d>] hibernate+0x19d/0x1d0
> [   38.289488]  [<ffffffff810a1c9c>] state_store+0xec/0x100
> [   38.298180]  [<ffffffff812d448f>] kobj_attr_store+0xf/0x20
> [   38.307040]  [<ffffffff811e91d0>] sysfs_kf_write+0x50/0x70
> [   38.315880]  [<ffffffff811e84e5>] kernfs_fop_write+0x105/0x190
> [   38.325035]  [<ffffffff81171dcd>] vfs_write+0xbd/0x1d0
> [   38.333471]  [<ffffffff81172942>] SyS_write+0x52/0xc0
> [   38.341680]  [<ffffffff81620216>] system_call_fastpath+0x1a/0x1f
> [   38.350836] ---[ end trace 555995a6cab7d501 ]---
> [   38.359898] ------------[ cut here ]------------
> [   38.367518] WARNING: CPU: 6 PID: 3786 at fs/proc/generic.c:521 remove_proc_entry+0x19c/0x1b0()
> [   38.377354] remove_proc_entry: removing non-empty directory 'irq/17', leaking at least 'ehci_hcd:usb1'
> [   38.387685] Modules linked in: xt_iprange ipt_MASQUERADE iptable_mangle iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter ip_tables x_tables cpufreq_powersave cpufreq_userspace cpufreq_stats cpufreq_conservative ipv6 vfat fat fuse dm_crypt dm_mod amd64_edac_mod edac_core fam15h_power k10temp radeon drm_kms_helper ttm acpi_cpufreq r8169
> [   38.424577] CPU: 7 PID: 3786 Comm: hib.sh Tainted: G        W     3.16.0-rc7+ #1
> [   38.433267] Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 EVO R2.0, BIOS 1503 01/16/2013
> [   38.444345]  0000000000000009 ffff88041e4ebb40 ffffffff81617d4e ffff88041e4ebb88
> [   38.452997]  ffff88041e4ebb78 ffffffff8104f82c ffff88042b199000 ffff880429842e30
> [   38.461711]  0000000000000002 ffff88041e4ebc4e ffff88042b1990b9 ffff88041e4ebbd8
> [   38.470362] Call Trace:
> [   38.474000]  [<ffffffff81617d4e>] dump_stack+0x4e/0x7a
> [   38.480276]  [<ffffffff8104f82c>] warn_slowpath_common+0x8c/0xc0
> [   38.487466]  [<ffffffff8104f8ac>] warn_slowpath_fmt+0x4c/0x50
> [   38.494344]  [<ffffffff811dc11c>] remove_proc_entry+0x19c/0x1b0
> [   38.501441]  [<ffffffff810b479e>] unregister_irq_proc+0xce/0xf0
> [   38.508498]  [<ffffffff810ae689>] free_desc+0x39/0x90
> [   38.514772]  [<ffffffff810ae729>] irq_free_descs+0x49/0x90
> [   38.523647]  [<ffffffff810b3f36>] irq_dispose_mapping+0x36/0x60
> [   38.532943]  [<ffffffff8103c2d2>] mp_unmap_irq+0x92/0xc0
> [   38.541628]  [<ffffffff81033a81>] acpi_unregister_gsi_ioapic+0x31/0x40
> [   38.551512]  [<ffffffff81033987>] acpi_unregister_gsi+0x17/0x20
> [   38.560841]  [<ffffffff81340c44>] acpi_pci_irq_disable+0x5c/0x63
> [   38.570218]  [<ffffffff81532b6e>] pcibios_disable_device+0x2e/0x40
> [   38.579774]  [<ffffffff8130bb22>] do_pci_disable_device+0x52/0x60
> [   38.589277]  [<ffffffff8130bb88>] pci_disable_device+0x58/0xd0
> [   38.598485]  [<ffffffff81459182>] usb_hcd_pci_shutdown+0x42/0x50
> [   38.607886]  [<ffffffff8130db28>] pci_device_shutdown+0x28/0x40
> [   38.617206]  [<ffffffff813cf112>] device_shutdown+0xd2/0x1f0
> [   38.626273]  [<ffffffff810754b5>] kernel_power_off+0x35/0x80
> [   38.635346]  [<ffffffff81617455>] power_down+0x45/0xa1
> [   38.643849]  [<ffffffff810a527d>] hibernate+0x19d/0x1d0
> [   38.652446]  [<ffffffff810a1c9c>] state_store+0xec/0x100
> [   38.661129]  [<ffffffff812d448f>] kobj_attr_store+0xf/0x20
> [   38.670047]  [<ffffffff811e91d0>] sysfs_kf_write+0x50/0x70
> [   38.678911]  [<ffffffff811e84e5>] kernfs_fop_write+0x105/0x190
> [   38.688123]  [<ffffffff81171dcd>] vfs_write+0xbd/0x1d0
> [   38.696609]  [<ffffffff81172942>] SyS_write+0x52/0xc0
> [   38.704866]  [<ffffffff81620216>] system_call_fastpath+0x1a/0x1f
> [   38.713983] ---[ end trace 555995a6cab7d502 ]---
> [   38.722834] ------------[ cut here ]------------
> [   38.730422] WARNING: CPU: 0 PID: 3786 at fs/proc/generic.c:521 remove_proc_entry+0x19c/0x1b0()
> [   38.740241] remove_proc_entry: removing non-empty directory 'irq/18', leaking at least 'ohci_hcd:usb6'
> [   38.750583] Modules linked in: xt_iprange ipt_MASQUERADE iptable_mangle iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4[   38.762023] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.0 domain=0x0009 address=0x0000000000000080 flags=0x0020]
> [   38.762030] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.0 domain=0x0009 address=0x0000000000000000 flags=0x0000]
> [   38.762034] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.0 domain=0x0009 address=0x00000000ffffffc0 flags=0x0010]
> [   38.762038] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.0 domain=0x0009 address=0x00000000ffffffc0 flags=0x0010]
> [   38.762041] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.0 domain=0x0009 address=0x00000000ffffffc0 flags=0x0010]
> [   38.762044] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.0 domain=0x0009 address=0x00000000ffffffc0 flags=0x0010]
> [   38.762048] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.0 domain=0x0009 address=0x00000000ffffffc0 flags=0x0010]
> [   38.762051] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.0 domain=0x0009 address=0x00000000ffffffc0 flags=0x0010]
> 
> lotta those...
> 
> [   45.876957] Clocksource tsc unstable (delta = 4686965640 ns)
> [   45.883734]  nf_nat nf_conntrack iptable_filter ip_tables x_tables cpufreq_powersave cpufreq_userspace cpufreq_stats cpufreq_conservative ipv6 vfat fat fuse dm_crypt dm_mod amd64_edac_mod edac_core fam15h_power k10temp radeon drm_kms_helper ttm acpi_cpufreq r8169
> [   45.909515] CPU: 0 PID: 3786 Comm: hib.sh Tainted: G        W     3.16.0-rc7+ #1
> [   45.909616] Switched to clocksource acpi_pm
> [   45.921887] Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 EVO R2.0, BIOS 1503 01/16/2013
> [   45.932301]  0000000000000009 ffff88041e4ebb40 ffffffff81617d4e ffff88041e4ebb88
> [   45.940316]  ffff88041e4ebb78 ffffffff8104f82c ffff880429842e00 ffff880429b2e630
> [   45.948346]  0000000000000002 ffff88041e4ebc4e ffff880429842eb9 ffff88041e4ebbd8
> [   45.956357] Call Trace:
> [   45.959304]  [<ffffffff81617d4e>] dump_stack+0x4e/0x7a
> [   45.964975]  [<ffffffff8104f82c>] warn_slowpath_common+0x8c/0xc0
> [   45.971491]  [<ffffffff8104f8ac>] warn_slowpath_fmt+0x4c/0x50
> [   45.977757]  [<ffffffff811dc11c>] remove_proc_entry+0x19c/0x1b0
> [   45.984240]  [<ffffffff810b479e>] unregister_irq_proc+0xce/0xf0
> [   45.990696]  [<ffffffff810ae689>] free_desc+0x39/0x90
> [   45.996299]  [<ffffffff810ae729>] irq_free_descs+0x49/0x90
> [   46.002380]  [<ffffffff810b3f36>] irq_dispose_mapping+0x36/0x60
> [   46.008893]  [<ffffffff8103c2d2>] mp_unmap_irq+0x92/0xc0
> [   46.014794]  [<ffffffff81033a81>] acpi_unregister_gsi_ioapic+0x31/0x40
> [   46.021911]  [<ffffffff81033987>] acpi_unregister_gsi+0x17/0x20
> [   46.028427]  [<ffffffff81340c44>] acpi_pci_irq_disable+0x5c/0x63
> [   46.035046]  [<ffffffff81532b6e>] pcibios_disable_device+0x2e/0x40
> [   46.041809]  [<ffffffff8130bb22>] do_pci_disable_device+0x52/0x60
> [   46.048495]  [<ffffffff8130bb88>] pci_disable_device+0x58/0xd0
> [   46.054996]  [<ffffffff81459182>] usb_hcd_pci_shutdown+0x42/0x50
> [   46.061611]  [<ffffffff8130db28>] pci_device_shutdown+0x28/0x40
> [   46.068202]  [<ffffffff813cf112>] device_shutdown+0xd2/0x1f0
> [   46.074543]  [<ffffffff810754b5>] kernel_power_off+0x35/0x80
> [   46.080886]  [<ffffffff81617455>] power_down+0x45/0xa1
> [   46.086695]  [<ffffffff810a527d>] hibernate+0x19d/0x1d0
> [   46.092603]  [<ffffffff810a1c9c>] state_store+0xec/0x100
> [   46.098599]  [<ffffffff812d448f>] kobj_attr_store+0xf/0x20
> [   46.104755]  [<ffffffff811e91d0>] sysfs_kf_write+0x50/0x70
> [   46.110921]  [<ffffffff811e84e5>] kernfs_fop_write+0x105/0x190
> [   46.117434]  [<ffffffff81171dcd>] vfs_write+0xbd/0x1d0
> [   46.123291]  [<ffffffff81172942>] SyS_write+0x52/0xc0
> [   46.129069]  [<ffffffff81620216>] system_call_fastpath+0x1a/0x1f
> [   46.135798] ---[ end trace 555995a6cab7d503 ]---
> [   46.142058] ACPI: Preparing to enter system sleep state S5
> [   46.148449] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query honored via cmdline
> [   46.159388] reboot: Power down
> [   46.163504] acpi_power_off called
> 
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