I managed to get a trace of the ods-signerd crasher:
(gdb) bt
#0 0x000000000041c960 in namedb_del_denial (db=0x21d3590,
denial=0x7fc1592807c0) at signer/namedb.c:837
#1 0x000000000041cd9d in namedb_del_nsec3_trigger (db=0x21d3590,
domain=0x7fc19a12daf0, rollback=0) at signer/namedb.c:680
#2 namedb_del_denial_trigger (db=0x21d3590, domain=0x7fc19a12daf0, rollback=0)
at signer/namedb.c:712
#3 0x000000000041d37d in namedb_diff (db=0x21d3590, is_ixfr=0)
at signer/namedb.c:886
#4 0x0000000000406ac0 in adapi_trans_full (zone=0x21d1300)
at adapter/adapi.c:132
#5 0x0000000000409138 in adfile_read (zone=0x21d1300) at adapter/adfile.c:315
#6 0x0000000000421c85 in tools_input (zone=0x21d1300) at signer/tools.c:131
#7 0x00000000004109ee in worker_perform_task (worker=0x2269c90)
at daemon/worker.c:340
#8 worker_work (worker=0x2269c90) at daemon/worker.c:566
#9 0x0000000000411550 in worker_start (worker=0x2269c90)
at daemon/worker.c:700
#10 0x000000000040d501 in worker_thread_start (arg=<value optimized out>)
at daemon/engine.c:365
#11 0x00000036efa077f1 in start_thread () from /lib64/libpthread.so.0
#12 0x00000036ef2e5ccd in clone () from /lib64/libc.so.6
(gdb) f 0
#0 0x000000000041c960 in namedb_del_denial (db=0x21d3590,
denial=0x7fc1592807c0) at signer/namedb.c:837
837 if (denial->rrset->rr_count) {
(gdb) p denial->rrset->rr_count
Cannot access memory at address 0x30
Full back trace (with not much more):
in namedb_del_denial (db=0x21d3590,
denial=0x7fc1592807c0) at signer/namedb.c:837
node = <value optimized out>
pnode = <value optimized out>
pdenial = 0x0
__func__ = "namedb_del_denial"
#1 0x000000000041cd9d in namedb_del_nsec3_trigger (db=0x21d3590,
domain=0x7fc19a12daf0, rollback=0) at signer/namedb.c:680
dstatus = <value optimized out>
denial = <value optimized out>
#2 namedb_del_denial_trigger (db=0x21d3590, domain=0x7fc19a12daf0, rollback=0)
at signer/namedb.c:712
parent = <value optimized out>
zone = 0x21d1300
is_deleted = <value optimized out>
__func__ = "namedb_del_denial_trigger"
#3 0x000000000041d37d in namedb_diff (db=0x21d3590, is_ixfr=0)
at signer/namedb.c:886
node = 0x7fc19a12df30
domain = 0x7fc183c63f10
#4 0x0000000000406ac0 in adapi_trans_full (zone=0x21d1300)
at adapter/adapi.c:132
start = 0
end = 0
num_added = 0
#5 0x0000000000409138 in adfile_read (zone=0x21d1300) at adapter/adfile.c:315
fd = 0x7fc1592cbb60
adzone = 0x21d1300
status = ODS_STATUS_OK
#6 0x0000000000421c85 in tools_input (zone=0x21d1300) at signer/tools.c:131
status = ODS_STATUS_OK
start = 1337056810
end = 0
__func__ = "tools_input"
#7 0x00000000004109ee in worker_perform_task (worker=0x2269c90)
at daemon/worker.c:340
when = 1337056810
end = 0
engine = 0x21cc480
zone = 0x21d1300
task = 0x21e1df0
status = <value optimized out>
never = 31536000
what = TASK_SIGN
backup = 0
start = 0
status = <value optimized out>
never = 31536000
what = TASK_SIGN
backup = 0
start = 0
#8 worker_work (worker=0x2269c90) at daemon/worker.c:566
now = <value optimized out>
timeout = <value optimized out>
engine = <value optimized out>
zone = 0x21d1300
status = <value optimized out>
__func__ = "worker_work"
#9 0x0000000000411550 in worker_start (worker=0x2269c90)
at daemon/worker.c:700
__func__ = "worker_start"
#10 0x000000000040d501 in worker_thread_start (arg=<value optimized out>)
at daemon/engine.c:365
worker = 0x2269c90
#11 0x00000036efa077f1 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#12 0x00000036ef2e5ccd in clone () from /lib64/libc.so.6
No symbol table info available.
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