[Olsr-dev] segfault in -r3 reproduced

Henning Rogge (spam-protected)
Sat Dec 6 17:07:12 CET 2008

On Saturday 06 December 2008 14:26:06 L. Aaron Kaplan wrote:
> olsrd: src/lq_plugin.c:426: olsr_malloc_hello_neighbor: Assertion `
> (const char *)h + sizeof(*h) == (const char *)h->linkquality' failed.
> Program received signal SIGABRT, Aborted.
> [Switching to Thread 47720100218576 (LWP 19479)]
> 0x00002b66b37e607b in raise () from /lib/libc.so.6
> (gdb) bt
> #0  0x00002b66b37e607b in raise () from /lib/libc.so.6
> #1  0x00002b66b37e784e in abort () from /lib/libc.so.6
> #2  0x00002b66b37dfaf4 in __assert_fail () from /lib/libc.so.6
> #3  0x0000000000414484 in olsr_malloc_hello_neighbor (id=0x43d156
> "HELLO deserialization")
I will release a patch for this (small) problem tomorrow, but I think that's 
not our important bug:

this one is it:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 46937385240272 (LWP 21322)]
0x0000000000424407 in olsr_update_rt_path (rtp=0x5c6ad0, tc=0x5c69a0, 
link=0x5e29c0) at src/routing_table.c:221
221       rtp->rtp_nexthop.iif_index = link->inter->if_index;
(gdb) bt
#0  0x0000000000424407 in olsr_update_rt_path (rtp=0x5c6ad0, tc=0x5c69a0, 
    at src/routing_table.c:221
#1  0x00000000004246c2 in olsr_insert_rt_path (rtp=0x5c6ad0, tc=0x5c69a0, 
    at src/routing_table.c:343
#2  0x000000000041e015 in olsr_calculate_routing_table () at 
#3  0x000000000041c19d in olsr_process_changes () at src/olsr.c:166
#4  0x000000000041c2c8 in olsr_trigger_forced_update (unused=0x0) at 
#5  0x0000000000425b90 in olsr_walk_timers (last_run=0x555308) at 
#6  0x00000000004256e4 in olsr_scheduler () at src/scheduler.c:138
#7  0x00000000004163e5 in main (argc=2, argv=0x7fff34d4d208) at src/main.c:393
(gdb) quit

When a route is added AND the process fails, the internal route structures of 
olsr seems to get confused... which results in a segfault.


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