netdev - net: smsc95xx: aligment issues

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Date:   Sat, 28 Apr 2018 09:58:40 +0200 (CEST)
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Nisar Sayed <nisar.sayed@...rochip.com>,
        Woojung Huh <woojung.huh@...rochip.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        linux-usb <linux-usb@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        popcorn mix <popcornmix@...il.com>,
        James Hughes <james.hughes@...pberrypi.org>
Subject: net: smsc95xx: aligment issues

Hi,
after connecting a Raspberry Pi 1 B to my local network i'm seeing aligment issues under /proc/cpu/alignment:

User:		0
System:		142 (_decode_session4+0x12c/0x3c8)
Skipped:	0
Half:		0
Word:		0
DWord:		127
Multi:		15
User faults:	2 (fixup)

I've also seen outputs with _csum_ipv6_magic.

Kernel config: bcm2835_defconfig
Reproducible kernel trees: current linux-next, 4.17-rc2 and 4.14.37 (i didn't test older versions)

Please tell if you need more information to narrow down this issue.

Best regards
Stefan