David Miller writes:
> From: Will Simoneau <[email protected]>
> Date: Wed, 20 Sep 2006 13:21:23 -0400
>
> > I upgraded from 2.6.17.7 to 2.6.18 today, and in dmesg I have 5 of these
> > messages in a row:
> >
> > Kernel unaligned access at TPC[100be8c8] ehci_hub_control+0x350/0x680 [ehci_hcd]
> >
> > This message wasn't there before... I suppose it is pretty harmless as
> > the kernel is supposed to handle unaligned accesses (right?) but this is
> > the first time it's happened.
>
> Yes, I've been meaning to send Greg KH patches to fix these
> cases, thanks for reminding me about it.
I don't think it's harmless. My Ultra5 has an add-on PCI USB controller
card (Belkin). A 2.6.18-rc kernel compiled with gcc-4.1.1 will throw a few
unaligned accesses when I initialise USB by inserting a USB memory stick.
Removing the memory stick then results in PCI errors and other breakage.
The same kernel compiled with gcc-3.4.6 has no problems at all, so I've
been assuming it's a gcc-4 issue and not a kernel issue.
/Mikael
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