Re: 4.6-rc*: Kernel unaligned access at pci_bus_read_config_dword+0x64/0x80

[Anatoly Pugachev]

On Thu, Jun 2, 2016 at 10:11 PM, Meelis Roos <mroos@xxxxxxxx> wrote:
> Between 4.5.0 and 4.6.0-rc3, my Spar Enterprise T5120 has started
> showing the following messages during bootup:
>
> [   64.564608] Kernel unaligned access at TPC[69fb04] pci_bus_read_config_dword+0x64/0x80
> [   64.564688] Kernel unaligned access at TPC[69fb04] pci_bus_read_config_dword+0x64/0x80
> [   64.564760] Kernel unaligned access at TPC[69fb04] pci_bus_read_config_dword+0x64/0x80
> [   64.564832] Kernel unaligned access at TPC[69fb04] pci_bus_read_config_dword+0x64/0x80
> [   64.564904] Kernel unaligned access at TPC[69fb04] pci_bus_read_config_dword+0x64/0x80

got the same messages on my t5120 with kernel 4.6.1 :

Jun 09 15:48:24 nvg5120 kernel: io scheduler cfq registered (default)
Jun 09 15:48:24 nvg5120 kernel: Kernel unaligned access at TPC[73b92c]
pci_bus_read_config_dword+0x6c/0x80
Jun 09 15:48:24 nvg5120 kernel: Kernel unaligned access at TPC[73b92c]
pci_bus_read_config_dword+0x6c/0x80
Jun 09 15:48:24 nvg5120 kernel: Kernel unaligned access at TPC[73b92c]
pci_bus_read_config_dword+0x6c/0x80
Jun 09 15:48:24 nvg5120 kernel: Kernel unaligned access at TPC[73b92c]
pci_bus_read_config_dword+0x6c/0x80
Jun 09 15:48:24 nvg5120 kernel: Kernel unaligned access at TPC[73b92c]
pci_bus_read_config_dword+0x6c/0x80
Jun 09 15:48:24 nvg5120 kernel: f0286d78: ttyS0 at I/O 0x0 (irq = 17,
base_baud = 115200) is a SUN4V HCONS

but 4.7.0-rc2+ (from git), does not have it, probably fixed.