Tim wrote:

root@OpenWrt:/# dmesg 8kB, 2-way, VIPT, no aliases, linesize 16 bytes Memory: 13236k/16384k available (2231k kernel code, 3148k reserved, 476k data, 136k init, 0k highmem) Hierarchical RCU implementation. NR_IRQS:128 console [ttyS0] enabled Calibrating delay loop... 199.16 BogoMIPS (lpj=398336) Mount-cache hash table entries: 512 NET: Registered protocol family 16 bio: create slab <bio-0> at 0 Switching to clocksource MIPS NET: Registered protocol family 2 IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP established hash table entries: 512 (order: 0, 4096 bytes) TCP bind hash table entries: 512 (order: -1, 2048 bytes) TCP: Hash tables configured (established 512 bind 512) TCP reno registered NET: Registered protocol family 1 squashfs: version 4.0 (2009/01/31) Phillip Lougher Registering mini_fo version $Id$ JFFS2 version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc. msgmni has been set to 25 io scheduler noop registered io scheduler deadline registered (default) Serial: 8250/16550 driver, 2 ports, IRQ sharing enabled serial8250: ttyS0 at MMIO 0xb8000300 (irq = 3) is a 16550A serial8250: ttyS1 at MMIO 0xb8000400 (irq = 3) is a 16550A serial8250.0: ttyS0 at MMIO 0xb8000300 (irq = 3) is a 16550A serial8250.0: ttyS1 at MMIO 0xb8000400 (irq = 3) is a 16550A flash init: 0x1c000000 0x02000000 Physically mapped flash: Found 1 x16 devices at 0x0 in 16-bit bank Physically mapped flash: Found an alias at 0x400000 for the chip at 0x0 Physically mapped flash: Found an alias at 0x800000 for the chip at 0x0 Physically mapped flash: Found an alias at 0xc00000 for the chip at 0x0 Physically mapped flash: Found an alias at 0x1000000 for the chip at 0x0 Physically mapped flash: Found an alias at 0x1400000 for the chip at 0x0 Physically mapped flash: Found an alias at 0x1800000 for the chip at 0x0 Physically mapped flash: Found an alias at 0x1c00000 for the chip at 0x0 CFI mfr 0x000000c2 CFI id 0x000022a8 Amd/Fujitsu Extended Query Table at 0x0040 Amd/Fujitsu Extended Query version 1.1. number of CFI chips: 1 cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness. Flash device: 0x400000 at 0x1fc00000 bootloader size: 262144 Updating TRX offsets and length: old trx = [0x0000001c, 0x00000974, 0x000e2c00], len=0x00281000 crc32=0x16ba3b2e new trx = [0x0000001c, 0x00000974, 0x000e2c00], len=0x000e2c00 crc32=0x0ecec672 Done Creating 4 MTD partitions on "Physically mapped flash": 0x000000000000-0x000000040000 : "cfe" 0x000000040000-0x0000003f0000 : "linux" 0x000000122c00-0x0000003f0000 : "rootfs" mtd: partition "rootfs" must either start or end on erase block boundary or be smaller than an erase block -- forcing read-only mtd: partition "rootfs" set to be root filesystem mtd: partition "rootfs_data" created automatically, ofs=2A0000, len=150000 0x0000002a0000-0x0000003f0000 : "rootfs_data" 0x0000003f0000-0x000000400000 : "nvram" b44.c:v2.0 eth0: Broadcom 44xx/47xx 10/100BaseT Ethernet 00:25:9c:3c:46:04 BCM47xx Watchdog Timer enabled (30 seconds, nowayout) TCP westwood registered NET: Registered protocol family 17 802.1Q VLAN Support v1.8 Ben Greear greearb@candelatech.com All bugs added by David S. Miller davem@redhat.com VFS: Mounted root (squashfs filesystem) readonly on device 31:2. Freeing unused kernel memory: 136k freed Please be patient, while OpenWrt loads ... diag: Detected 'Linksys WRT54G/GS/GL' b44: eth0: Link is up at 100 Mbps, full duplex. b44: eth0: Flow control is off for TX and off for RX. roboswitch: Probing device eth0: found a 5325! It's a 5350. mini_fo: using base directory: / mini_fo: using storage directory: /tmp/root b44: eth0: powering down PHY b44: eth0: Link is up at 100 Mbps, full duplex. b44: eth0: Flow control is off for TX and off for RX. device eth0.0 entered promiscuous mode device eth0 entered promiscuous mode br-lan: port 1(eth0.0) entering forwarding state Compat-wireless backport release: compat-wireless-2010-07-13-4-g04898a5 Backport based on wireless-2.6.git v2.6.35-rc6-48432-gdce358e cfg80211: Calling CRDA to update world regulatory domain cfg80211: World regulatory domain updated: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) b43-phy0: Broadcom 5352 WLAN found (core revision 9) phy0: Selected rate control algorithm 'minstrel' Registered led device: b43-phy0::tx Registered led device: b43-phy0::rx Registered led device: b43-phy0::radio Broadcom 43xx driver loaded [ Features: PL, Firmware-ID: FW13 ] Broadcom 43xx-legacy driver loaded [ Features: PLID, Firmware-ID: FW10 ] PPP generic driver version 2.4.2 ip_tables: (C) 2000-2006 Netfilter Core Team NET: Registered protocol family 24 nf_conntrack version 0.5.0 (208 buckets, 832 max) batman-adv-dbg: go through if_list batman-adv-dbg: final min_mtu is 1500 batman-adv-dbg: got event 5 for net_dev 80845c00 batman-adv-dbg: will add net_device 80845c00 to if_list batman-adv-dbg: got batman_if (null) for net_dev 80845c00 batman-adv-dbg: got event 1 for net_dev 80845c00 batman-adv-dbg: got batman_if (null) for net_dev 80845c00 batman-adv-dbg: got event 5 for net_dev 8086f000 batman-adv-dbg: will add net_device 8086f000 to if_list batman-adv-dbg: added net_device 8086f000 to if_list as 80e7a900 batman-adv-dbg: got batman_if 80e7a900 for net_dev 8086f000 batman-adv-dbg: got event 1 for net_dev 8086f000 batman-adv-dbg: got batman_if 80e7a900 for net_dev 8086f000 batman-adv-dbg: hardif_activate_interface(80549ec0, 80e7a900) batman-adv-dbg: got event 5 for net_dev 80c16800 batman-adv-dbg: will add net_device 80c16800 to if_list batman-adv-dbg: added net_device 80c16800 to if_list as 80e7a880 batman-adv-dbg: got batman_if 80e7a880 for net_dev 80c16800 batman-adv-dbg: got event 1 for net_dev 80c16800 batman-adv-dbg: got batman_if 80e7a880 for net_dev 80c16800 batman-adv-dbg: hardif_activate_interface(80549ec0, 80e7a880) batman-adv-dbg: got event 5 for net_dev 808e2000 batman-adv-dbg: will add net_device 808e2000 to if_list batman-adv-dbg: added net_device 808e2000 to if_list as 80e7a800 batman-adv-dbg: got batman_if 80e7a800 for net_dev 808e2000 batman-adv-dbg: got event 1 for net_dev 808e2000 batman-adv-dbg: got batman_if 80e7a800 for net_dev 808e2000 batman-adv-dbg: hardif_activate_interface(80549ec0, 80e7a800) batman-adv-dbg: got event 5 for net_dev 80e21800 batman-adv-dbg: will add net_device 80e21800 to if_list batman-adv-dbg: added net_device 80e21800 to if_list as 80e7a780 batman-adv-dbg: got batman_if 80e7a780 for net_dev 80e21800 batman-adv-dbg: got event 1 for net_dev 80e21800 batman-adv-dbg: got batman_if 80e7a780 for net_dev 80e21800 batman-adv-dbg: hardif_activate_interface(80549ec0, 80e7a780) batman-adv-dbg: got event 5 for net_dev 80fd1000 batman-adv-dbg: will add net_device 80fd1000 to if_list batman-adv-dbg: added net_device 80fd1000 to if_list as 80e7a700 batman-adv-dbg: got batman_if 80e7a700 for net_dev 80fd1000 batman-adv-dbg: got event 5 for net_dev 80549c00 batman-adv-dbg: will add net_device 80549c00 to if_list batman-adv-dbg: got batman_if (null) for net_dev 80549c00 batman-adv:B.A.T.M.A.N. advanced 2010.0.0 (compatibility version 8) loaded batman-adv:Adding interface: wlan0 batman-adv:Not using interface wlan0 (retrying later): interface not active jffs2_scan_eraseblock(): End of filesystem marker found at 0x0 jffs2_build_filesystem(): unlocking the mtd device... done. jffs2_build_filesystem(): erasing all blocks after the end marker... done. mini_fo: using base directory: / mini_fo: using storage directory: /overlay batman-adv-dbg: got event 9 for net_dev 80845c00 batman-adv-dbg: got batman_if (null) for net_dev 80845c00 batman-adv-dbg: got event 2 for net_dev 80845c00 batman-adv-dbg: got batman_if (null) for net_dev 80845c00 batman-adv-dbg: got event 9 for net_dev 80e21800 batman-adv-dbg: got batman_if 80e7a780 for net_dev 80e21800 batman-adv-dbg: hardif_deactivate_interface(80e7a780) br-lan: port 1(eth0.0) entering disabled state batman-adv-dbg: got event 2 for net_dev 80e21800 batman-adv-dbg: got batman_if 80e7a780 for net_dev 80e21800 batman-adv-dbg: hardif_deactivate_interface(80e7a780) batman-adv-dbg: got event 9 for net_dev 80c16800 batman-adv-dbg: got batman_if 80e7a880 for net_dev 80c16800 batman-adv-dbg: hardif_deactivate_interface(80e7a880) device eth0 left promiscuous mode batman-adv-dbg: got event 2 for net_dev 80c16800 batman-adv-dbg: got batman_if 80e7a880 for net_dev 80c16800 batman-adv-dbg: hardif_deactivate_interface(80e7a880) device eth0.0 left promiscuous mode br-lan: port 1(eth0.0) entering disabled state batman-adv-dbg: got event 6 for net_dev 80e21800 batman-adv-dbg: got batman_if 80e7a780 for net_dev 80e21800 batman-adv-dbg: hardif_remove_interface(80e7a780) batman-adv-dbg: will remove batman_if 80e7a780 batman-adv-dbg: putted netdev 80e21800 of batman_if 80e7a780 batman-adv-dbg: removed batman_if 80e7a780 batman-adv-dbg: got event 9 for net_dev 808e2000 batman-adv-dbg: got batman_if 80e7a800 for net_dev 808e2000 batman-adv-dbg: hardif_deactivate_interface(80e7a800) batman-adv-dbg: got event 2 for net_dev 808e2000 batman-adv-dbg: got batman_if 80e7a800 for net_dev 808e2000 batman-adv-dbg: hardif_deactivate_interface(80e7a800) batman-adv-dbg: got event 13 for net_dev 80845c00 batman-adv-dbg: got batman_if (null) for net_dev 80845c00 batman-adv-dbg: got event 1 for net_dev 80845c00 batman-adv-dbg: got batman_if (null) for net_dev 80845c00 batman-adv-dbg: got event 9 for net_dev 80845c00 batman-adv-dbg: got batman_if (null) for net_dev 80845c00 batman-adv-dbg: got event 2 for net_dev 80845c00 batman-adv-dbg: got batman_if (null) for net_dev 80845c00 batman-adv-dbg: got event 13 for net_dev 80845c00 batman-adv-dbg: got batman_if (null) for net_dev 80845c00 batman-adv-dbg: got event 1 for net_dev 80845c00 batman-adv-dbg: got batman_if (null) for net_dev 80845c00 batman-adv-dbg: got event 13 for net_dev 80c16800 batman-adv-dbg: got batman_if 80e7a880 for net_dev 80c16800 batman-adv-dbg: got event 1 for net_dev 80c16800 batman-adv-dbg: got batman_if 80e7a880 for net_dev 80c16800 batman-adv-dbg: hardif_activate_interface(80549ec0, 80e7a880) batman-adv-dbg: got event 4 for net_dev 80c16800 batman-adv-dbg: got batman_if 80e7a880 for net_dev 80c16800 batman-adv-dbg: got event 9 for net_dev 80c16800 batman-adv-dbg: got batman_if 80e7a880 for net_dev 80c16800 batman-adv-dbg: hardif_deactivate_interface(80e7a880) batman-adv-dbg: got event 2 for net_dev 80c16800 batman-adv-dbg: got batman_if 80e7a880 for net_dev 80c16800 batman-adv-dbg: hardif_deactivate_interface(80e7a880) batman-adv-dbg: got event 13 for net_dev 80c16800 batman-adv-dbg: got batman_if 80e7a880 for net_dev 80c16800 batman-adv-dbg: got event 1 for net_dev 80c16800 batman-adv-dbg: got batman_if 80e7a880 for net_dev 80c16800 batman-adv-dbg: hardif_activate_interface(80549ec0, 80e7a880) batman-adv-dbg: got event 5 for net_dev 80d66000 batman-adv-dbg: will add net_device 80d66000 to if_list batman-adv-dbg: added net_device 80d66000 to if_list as 808e6400 batman-adv-dbg: got batman_if 808e6400 for net_dev 80d66000 batman-adv-dbg: got event 13 for net_dev 80d66000 batman-adv-dbg: got batman_if 808e6400 for net_dev 80d66000 batman-adv-dbg: got event 1 for net_dev 80d66000 batman-adv-dbg: got batman_if 808e6400 for net_dev 80d66000 batman-adv-dbg: hardif_activate_interface(80549ec0, 808e6400) device eth0.0 entered promiscuous mode device eth0 entered promiscuous mode br-lan: port 1(eth0.0) entering forwarding state batman-adv-dbg: got event 4 for net_dev 80c16800 batman-adv-dbg: got batman_if 80e7a880 for net_dev 80c16800 batman-adv-dbg: got event 13 for net_dev 808e2000 batman-adv-dbg: got batman_if 80e7a800 for net_dev 808e2000 batman-adv-dbg: got event 1 for net_dev 808e2000 batman-adv-dbg: got batman_if 80e7a800 for net_dev 808e2000 batman-adv-dbg: hardif_activate_interface(80549ec0, 80e7a800) batman-adv-dbg: got event 9 for net_dev 808e2000 batman-adv-dbg: got batman_if 80e7a800 for net_dev 808e2000 batman-adv-dbg: hardif_deactivate_interface(80e7a800) batman-adv-dbg: got event 2 for net_dev 808e2000 batman-adv-dbg: got batman_if 80e7a800 for net_dev 808e2000 batman-adv-dbg: hardif_deactivate_interface(80e7a800) batman-adv-dbg: got event 13 for net_dev 808e2000 batman-adv-dbg: got batman_if 80e7a800 for net_dev 808e2000 batman-adv-dbg: got event 1 for net_dev 808e2000 batman-adv-dbg: got batman_if 80e7a800 for net_dev 808e2000 batman-adv-dbg: hardif_activate_interface(80549ec0, 80e7a800) batman-adv-dbg: got event 4 for net_dev 808e2000 batman-adv-dbg: got batman_if 80e7a800 for net_dev 808e2000 batman-adv-dbg: got event 6 for net_dev 80fd1000 batman-adv-dbg: got batman_if 80e7a700 for net_dev 80fd1000 batman-adv-dbg: hardif_remove_interface(80e7a700) batman-adv-dbg: will remove batman_if 80e7a700 batman-adv:Removing interface: wlan0 batman-adv-dbg: putted netdev 80fd1000 of batman_if 80e7a700 batman-adv-dbg: removed batman_if 80e7a700 batman-adv-dbg: got event 5 for net_dev 80fd1000 batman-adv-dbg: will add net_device 80fd1000 to if_list batman-adv-dbg: added net_device 80fd1000 to if_list as 80e7ae80 batman-adv-dbg: got batman_if 80e7ae80 for net_dev 80fd1000 batman-adv-dbg: got event 8 for net_dev 80fd1000 batman-adv-dbg: got batman_if 80e7ae80 for net_dev 80fd1000 CPU 0 Unable to handle kernel paging request at virtual address 00003aa1, epc == 80588300, ra == 805882e8 Oops[#1]: Cpu 0 $ 0 : 00000000 10009800 3c9c2500 80fd1000 $ 4 : 80a89e08 00003a9e 00003a98 00000000 $ 8 : 00000004 00000001 8029fd20 00000001 $12 : 0000000f 8023a728 ffffffff 8070fbc8 $16 : 80e7ae80 80fd1000 8058c8f4 00000008 $20 : 80549ec0 00460eb4 7f93b8a0 00000000 $24 : 00000003 8015f9dc $28 : 8070e000 8070fd58 00000000 805882e8 Hi : 00000000 Lo : 00000063 epc : 80588300 update_min_mtu+0x204/0x31c [batman_adv] Not tainted ra : 805882e8 update_min_mtu+0x1ec/0x31c [batman_adv] Status: 10009803 KERNEL EXL IE Cause : 0080000c BadVA : 00003aa1 PrId : 00029008 (Broadcom BCM3302) Modules linked in: batman_adv nf_nat_tftp nf_conntrack_tftp nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat nf_nat xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack pppoe pppox ipt_REJECT xt_TCPMSS ipt_LOG xt_comment xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables xt_tcpudp x_tables ppp_async ppp_generic slhc b43legacy b43 mac80211 crc_ccitt cfg80211 compat_firmware_class compat arc4 aes_generic deflate ecb cbc switch_robo switch_core diag Process ifconfig (pid: 1335, threadinfo=8070e000, task=805e96b0, tls=00000000) Stack : 80e7ae80 80fd1000 8058c8f4 00000008 80e7ae80 80588bb8 803d02a8 80e7ae80 80fd1000 0000405a 00000000 fffffff0 00000000 80fd1000 00000008 8004343c 00000500 00001805 000000bf 00000b3b 00000000 80fd1000 7f93b8e0 00000000 8070fe18 800435d8 80d35004 8073ff98 802ffc60 00000000 00000000 ffffffed 80fd1000 801a9450 802e6c90 801aa478 00000000 00000054 00008924 00008924 ... Call Trace: [<80588300>] update_min_mtu+0x204/0x31c [batman_adv]

Code: 24c50006 88820003 98820000 <a8a20003> b8a20000 90830004 a0a30004 90820005 a0a20005 Disabling lock debugging due to kernel taint

PS: Soll ich die nächsten Mails wieder auf Englisch an die Mailingliste schicken?

Yes, let's switch back to the ml. The the bug can be checked more easily now. The problem is that the compiler optimizes it a little bit.... too much. So the backtrace isn't always clear. If I understand the output (and the output of Lemonde) correctly then we have the problem with the changeaddr event and not the mtu update as the backtrace would suggest.

Now it really makes fun again to debug those things :D

I haven't wrote that code... so it may take a little bit until I feel in the right mood to hunt it real down.

Thanks a lot for your help in debugging it. Your name will definitely appear in the kernel changelog.

@Lemonde, it seems that you have the same problem. The patch will appear on the ml later. But please also add the other patches I'd suggested.

Greetings, Sven