On Tue, Sep 22, 2020 at 07:12:47AM -0000, Stuart Henderson wrote: > Sounds like they are trapping sigbus themselves but the handler isn't > giving useful information. > > Try just running it under gdb: > pkg_add gdb > egdb ods-signerd > set args -dv > run > > and see if you can get a backtrace. You may need to build opendnssec > with debug symbols to get a usable trace though (checkout the ports > tree and build it with "make DEBUG=-g repackage reinstall").
Hi Stuart, Thanks for that, concise and really helpful. The debug build process was easier than I expected :). For what is worth the results in egdb are: Thread 2 received signal SIGBUS, Bus error. [Switching to thread 478985] 0x00000851fb90f5f5 in ldns_rr_clone () from /usr/local/lib/libldns.so.7.1 (gdb) bt #0 0x00000851fb90f5f5 in ldns_rr_clone () from /usr/local/lib/libldns.so.7.1 #1 0x0000084fca6e4e55 in ixfr_del_rr (ixfr=0x852782d0d80, rr=0xdfdfdfdfdfdfdfdf) at signer/ixfr.c:134 #2 0x0000084fca6ea0da in rrset_sign (ctx=0x8522842d800, rrset=<optimized out>, signtime=1600781131) at signer/rrset.c:758 #3 0x0000084fca6ddd6c in drudge (worker=0x8521a9e4000) at daemon/signertasks.c:196 #4 0x0000084fca714e0b in runthread (data=0x851d1fc6300) at janitor.c:318 #5 0x00000852553ad0d1 in _rthread_start (v=<optimized out>) at /usr/src/lib/librthread/rthread.c:96 #6 0x00000851f742dc38 in __tfork_thread () at /usr/src/lib/libc/arch/amd64/sys/tfork_thread.S:77 #7 0x0000000000000000 in ?? () (gdb) info args No symbol table info available. (gdb) info local No symbol table info available. (gdb) up #1 0x0000084fca6e4e55 in ixfr_del_rr (ixfr=0x852782d0d80, rr=0xdfdfdfdfdfdfdfdf) at signer/ixfr.c:134 134 ldns_rr* rr_copy = ldns_rr_clone(rr); (gdb) info args ixfr = 0x852782d0d80 rr = 0xdfdfdfdfdfdfdfdf (gdb) info local rr_copy = <optimized out> I'm not a gdb expert, but I wonder why it says "No symbol table info available" ... In any case, I've forwarded the info. on to the opendnssec developer list. Thanks again. Cheers, Robb.
