[OpenWrt-Devel] AA on brcm47xx: Unhandled kernel unaligned access

[Rafał Miłecki]

On 21 June 2014 18:36, Nikolai Zhubr <n-a-zhubr at yandex.ru> wrote:
> [  637.430000] ------------[ cut here ]------------
> [  637.440000] WARNING: at net/core/dev.c:2194
> skb_warn_bad_offload+0xc0/0xe8()
> [  637.450000] b44: caps=(0x0000000000004000, 0x0000000000000000) len=1500
> data_len=0 gso_size=53118 gso_type=59551 ip_summed=0
> [  637.460000] Modules linked in: pppoe ppp_async iptable_nat b43legacy b43
> pppox ppp_generic nf_nat_ipv4 nf_conntrack_ipv4 mac80211 ipt_MASQUERADE
> cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac
> xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_CT slhc
> nf_nat_irc nf_nat_ftp nf_nat nf_defrag_ipv4 nf_conntrack_irc
> nf_conntrack_ftp iptable_raw iptable_mangle iptable_filter ipt_REJECT
> ip_tables crc_ccitt compat ip6t_REJECT ip6table_raw ip6table_mangle
> ip6table_filter ip6_tables x_tables nf_conntrack_ipv6 nf_conntrack
> nf_defrag_ipv6 ipv6 arc4 crypto_blkcipher leds_gpio gpio_button_hotplug tg3
> hwmon bgmac b44 ptp pps_core
> [  637.520000] CPU: 0 PID: 3 Comm: ksoftirqd/0 Not tainted 3.10.36 #1
> [  637.520000] Stack : 00000000 00000000 00000000 00000000 8030d552 00000036
> 818201d0 00000008
>           8026cfd0 802bb23b 00000003 8030cd00 818201d0 00000008 802b76e4
> 00000000
>           802b76dc 8001c118 00000003 80019ad8 80293ecc 00000008 8026e870
> 8182bc5c
>           00000000 00000000 00000000 00000000 00000000 00000000 00000000
> 00000000
>           00000000 00000000 00000000 00000000 00000000 00000000 00000000
> 8182bbe8
>           ...
> [  637.560000] Call Trace:
> [  637.560000] [<80010bb4>] show_stack+0x48/0x70
> [  637.570000] [<80019bd4>] warn_slowpath_common+0x78/0xa8
> [  637.570000] [<80019c30>] warn_slowpath_fmt+0x2c/0x38
> [  637.580000] [<801b27dc>] skb_warn_bad_offload+0xc0/0xe8
> [  637.580000] [<801b6390>] __skb_gso_segment+0x50/0xec
> [  637.590000] [<801de0dc>] ip_forward_finish+0x108/0x1bc
> [  637.590000] [<801b386c>] __netif_receive_skb_core+0x46c/0x52c
> [  637.600000] [<81acc16c>] 0x81acc16c
> [  637.600000]
> [  637.600000] ---[ end trace 2c2a6a28d6589bcc ]---

Any idea anyone? Does above mean b44 provided a corrupted packet? Or
some wrong pointer?
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