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Message-ID: <17682.27477.995475.57130@alkaid.it.uu.se> Date: Thu, 21 Sep 2006 12:37:09 +0200 From: Mikael Pettersson <mikpe@...uu.se> To: David Miller <davem@...emloft.net> Cc: simoneau@....uri.edu, sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [sparc64] 2.6.18 unaligned acccess in ehci_hub_control David Miller writes: > From: Will Simoneau <simoneau@....uri.edu> > 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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