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

Sat Jun 21 12:36:07 EDT 2014

21.06.2014 0:23, Rafał Miłecki:
> On 20 June 2014 22:12, Nikolai Zhubr<n-a-zhubr at yandex.ru>  wrote:
> There are tons of updates in trunk, this bug can be fixed for a long
> time already ;)

Unfortunately it seems no :/
Also, with trunk version, routing speed limit seems to be noticably 
lower (~27 Mbit trunk compared to ~34 Mbit 12.09)
Serial log follows (Unaligned access and something)
Please let me know what else I can do to find and fix it :)

Thank you,
Nikolai
  -----------------------------------------------------
  BARRIER BREAKER (Bleeding Edge, r41293)
  -----------------------------------------------------
   * 1/2 oz Galliano         Pour all ingredients into
   * 4 oz cold Coffee        an irish coffee mug filled
   * 1 1/2 oz Dark Rum       with crushed ice. Stir.
   * 2 tsp. Creme de Cacao
  -----------------------------------------------------
root at OpenWrt:/# exit
Please press Enter to activate this console.
[  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 ]---
[  637.610000] Unhandled kernel unaligned access[#1]:
[  637.610000] CPU: 0 PID: 3 Comm: ksoftirqd/0 Tainted: G        W 
3.10.36 #1
[  637.610000] task: 81820028 ti: 8182a000 task.ti: 8182a000
[  637.610000] $ 0   : 00000000 00000001 80d72b68 00000028
[  637.610000] $ 4   : c36ae951 ffffffff 00007088 00000000
[  637.610000] $ 8   : 0000002d 36643832 62393835 5d206363
[  637.610000] $12   : 00000000 03bf0000 00000000 bc000000
[  637.610000] $16   : 80ea6ce0 00000001 00000001 00000014
[  637.610000] $20   : 00000000 00000008 802b76e4 00000000
[  637.610000] $24   : 00000003 801507e8
[  637.610000] $28   : 8182a000 8182bd28 802b76dc 801aadc0
[  637.610000] Hi    : 00000000
[  637.610000] Lo    : 00000083
[  637.610000] epc   : 80064208 put_page+0x0/0x4c
[  637.610000]     Tainted: G        W
[  637.610000] ra    : 801aadc0 skb_release_data+0xc4/0x118
[  637.610000] Status: 1000b803	KERNEL EXL IE
[  637.610000] Cause : 00800010
[  637.610000] BadVA : c36ae951
[  637.610000] PrId  : 00029006 (Broadcom BMIPS3300)
[  637.610000] 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
[  637.610000] Process ksoftirqd/0 (pid: 3, threadinfo=8182a000, 
task=81820028, tls=00000000)
[  637.610000] Stack : 80ea6ce0 801aae28 80ea6ce0 00007088 00000000 
80ea6ce0 ffffffea 801aae64
	  802b76e4 80ea6ce0 80d6f6c0 00000001 80ea6ce0 801de0f4 00000258 8088de40
	  81a9e000 801ddfd4 00000001 80ea6ce0 802b8a98 802b8a98 802b76d0 81ab5000
	  80ea6ce0 801b386c 00000183 81ac8964 80cf65c0 801a9f78 802b76e4 8018e1f0
	  0000004b 00000082 81ab53e8 81ab53c0 00000183 80ea6ce0 0000000e 000005ea
	  ...
[  637.610000] Call Trace:
[  637.610000] [<80064208>] put_page+0x0/0x4c
[  637.610000] [<801aadc0>] skb_release_data+0xc4/0x118
[  637.610000] [<801aae64>] __kfree_skb+0x14/0xd4
[  637.610000] [<801de0f4>] ip_forward_finish+0x120/0x1bc
[  637.610000] [<801b386c>] __netif_receive_skb_core+0x46c/0x52c
[  637.610000] [<81acc16c>] 0x81acc16c
[  637.610000]
[  637.610000]
Code: 3c058006  0801903b  24a536ac <8c820000> 3042c000  10400003 
00801821  08018f12  00000000
[  637.850000] ---[ end trace 2c2a6a28d6589bcd ]---
[  637.860000] Kernel panic - not syncing: Fatal exception in interrupt
[  637.860000] Rebooting in 3 seconds..

CFE version 1.0.37 for BCM947XX (32bit,SP,LE)


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