[Olsr-dev] OLSR issues

[Ferry Huberts]

I've added a SEGV handler (Linux only) that outputs the stack trace to 
syslog and then tries to clean up (master branch).

Any strack traces: please report them.

On 07/02/16 10:01, Ferry Huberts wrote:
> Yes, we have been noticing crashes as well but are having trouble
> reproducing them.
>
> The assert you've hit we've been seeing too, so currently I'm running
> olsrd under gdb on 3 nodes:
> 1 with debug and with the triggering asserts
> 2 with debug but without the triggering asserts (since I think they're
> not the actual problem)
> 3 without debug
>
> Any help in getting this fixed will be truely appreciated.
> Any stracktraces of crashes will surely help!
>
>
> If someone can easily reproduce a crash, then please also try to do a
> bisect to pinpoint the bad commit.
> This may take sure way back in the commits but I sure hope not.
>
>
> On 06/02/16 23:10, Bluse wrote:
>> Hi all,
>>
>> Since a couple of month I observe some log messages from olsrd in our
>> Freifunk mesh, that I just want to share, although the actual routing
>> works fine.
>> Just in case there is something interesting for the development about
>> this issue. (There were a couple of email in Jan.2016 that went in the
>> same direction but their was no solution yet.)
>>
>> So here my observations
>>
>>
>> (A) regular olsrd start on nodes with a single wlan interface
>> (UBIQUITY Bullet M5 & Nanosation M5):
>> =>no dmesg output related to olsrd, routing works properly
>>
>> (B)regular olsrd start on nodes with 2x wlan interfaces (2,4GHz AP
>> mode & 5 GHz adhoc mode)
>>
>> (B.1) TPLink 4300 (MIPS):
>>
>> =>olsrd is running and routing works properly, dmesg shows:
>>
>> do_page_fault(): sending SIGSEGV to olsrd for invalid write access to
>> 00000000
>> epc = 7763d4d0 in libc.so[7760e000+9d000]
>> ra  = 00425c90 in olsrd[400000+4c000]
>>
>>
>> (B.2) TPLink 4900 (POWERPC):
>>
>> =>olsrd is running and routing works properly, dmesg shows:
>>
>> olsrd[19632]: unhandled signal 11 at 00000000 nip b78555b4 lr b78554b4
>> code 30001
>>
>>
>> MANUAL START OF OLSRD with debug level 6:
>>
>> olsrd -d 6 -file /var/etc/olsrd.conf -nofork
>>
>> -> just a single line of output:
>> *** olsr.org -
>> 0.9.0.3-git_10f0c39-hash_31e08ea6498c03a8f02694181402cf0d (2016-01-27
>> 11:30:48 on TPLink4900.lan) ***
>>
>> -no further debug output at all (should I use a different command ?)
>>
>>
>> after CRTL + C:
>>
>> ^C
>> Assertion failed: !memcmp(&branding->cmb_sig, "cookie", 6) &&
>> branding->cmb_id == ci->ci_id (src/olsr_cookie.c: olsr_cookie_free: 290)
>> sendto(v4): Bad file descriptor
>> sendto(v4): Bad file descriptor
>> sendto(v4): Bad file descriptor
>> sendto(v4): Bad file descriptor
>> Segmentation fault
>>
>>
>> SETUP:
>>
>> Openwrt DESIGNATED DRIVER (Bleeding Edge, r48548)
>> OLSR Version: 0.9.0.3-git_10f0c39-hash_31e08ea6498c03a8f02694181402cf0d
>>
>> cat /var/etc/olsrd.conf
>>
>> DebugLevel 0
>> AllowNoInt yes
>> IpVersion 4
>> FIBMetric "flat"
>> LinkQualityLevel 2
>> LinkQualityAlgorithm "etx_ff"
>> OlsrPort 698
>> Willingness 7
>> NatThreshold 1.0
>> UseHysteresis no
>> SmartGateway no
>> LinkQualityFishEye 1
>>
>> Hna4
>> {
>>                 10.10.4.0 255.255.255.0
>> }
>>
>> LoadPlugin "olsrd_arprefresh.so.0.1"
>> {
>> }
>>
>> LoadPlugin "olsrd_nameservice.so.0.3"
>> {
>>         PlParam "name" "TPLink-4900"
>>         PlParam "lat" "55.1"
>>         PlParam "lon" "10.8"
>>         PlParam "latlon-file" "/var/run/latlon.js"
>>         PlParam "hosts-file" "/var/etc/hosts.olsr"
>>         PlParam "sighup-pid-file" "/var/run/dnsmasq.pid"
>>         PlParam "suffix" ".freifunk"
>>         PlParam "interval" "180"
>>         PlParam "timeout" "3600"
>> }
>>
>> LoadPlugin "olsrd_txtinfo.so.0.1"
>> {
>>         PlParam "accept" "0.0.0.0"
>> }
>>
>> LoadPlugin "olsrd_watchdog.so.0.1"
>> {
>>         PlParam "interval" "30"
>>         PlParam "file" "/var/run/olsrd.watchdog"
>> }
>>
>> LoadPlugin "olsrd_jsoninfo.so.0.0"
>> {
>>         PlParam "accept" "0.0.0.0"
>> }
>>
>> InterfaceDefaults
>> {
>>         Ip4Broadcast 255.255.255.255
>>         Mode "mesh"
>> }
>>
>> Interface "wlan0"
>> {
>>         Mode "mesh"
>>         HelloInterval 11.0
>>         HelloValidityTime 500.0
>>         MidInterval 100.0
>>         MidValidityTime 2000.0
>>         HnaInterval 40.0
>>         HnaValidityTime 500.0
>> }
>>
>> Interface "eth0.10"
>> {
>>         Mode "ether"
>>         HelloInterval 11.0
>>         HelloValidityTime 500.0
>>         MidInterval 100.0
>>         MidValidityTime 2000.0
>>         HnaInterval 40.0
>>         HnaValidityTime 500.0
>> }
>>
>>
>> Greetings Bluse
>>
>>
>>
>>
>>
>>
>

-- 
Ferry Huberts