++ SEGFAULT_SIGNALS=all
++ nice catchsegv ./t -1 -c ../../../test/format/CONFIG.stress file_type=row leaf_page_max=9 internal_page_max=9 key_min=256 value_min=256
*** Error in `./t': invalid fastbin entry (free): 0x00003fff305f55d0 ***

(...)

Backtrace:
/lib64/libSegFault.so(+0x1734)[0x3fff9a371734]
??:0(??)[0x3fff9a3a0478]
/lib64/power8/libc.so.6(abort+0x27c)[0x3fff9a07072c]
/lib64/power8/libc.so.6(+0x84aa4)[0x3fff9a0b4aa4]
/lib64/power8/libc.so.6(+0x8fe94)[0x3fff9a0bfe94]
/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-ppc/build_posix/../src/os_common/os_alloc.c:327(__wt_free_int)[0x1008cfac]
/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-ppc/build_posix/../src/include/btree.i:680 (discriminator 1)(__wt_ref_addr_free)[0x1014dda8]
/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-ppc/build_posix/../src/btree/bt_discard.c:273(__wt_free_ref)[0x1014eb48]
/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-ppc/build_posix/../src/btree/bt_discard.c:293(__free_page_int)[0x1014ecc0]
/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-ppc/build_posix/../src/btree/bt_discard.c:120(__wt_page_out)[0x1014e4a4]
/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-ppc/build_posix/../src/btree/bt_discard.c:45(__wt_ref_out)[0x1014e170]
/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-ppc/build_posix/../src/evict/evict_page.c:445(__evict_page_dirty_update)[0x100730b8]
/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-ppc/build_posix/../src/evict/evict_page.c:205(__wt_evict)[0x10071d28]
/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-ppc/build_posix/../src/evict/evict_lru.c:2414(__evict_page)[0x1006dbc8]
/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-ppc/build_posix/../src/evict/evict_lru.c:1200(__evict_lru_pages)[0x100698e0]
/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-ppc/build_posix/../src/evict/evict_lru.c:337(__wt_evict_thread_run)[0x10067668]
/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-ppc/build_posix/../src/support/thread_group.c:31(__thread_run)[0x100f8578]
/lib64/power8/libpthread.so.0(+0x8944)[0x3fff9a2c8944]
/lib64/power8/libc.so.6(clone+0x98)[0x3fff9a147640] 

############################################
#  RUN PARAMETERS
############################################
abort=0
alter=1
assert_commit_timestamp=0
assert_read_timestamp=0
auto_throttle=1
backups=0
bitcnt=6
bloom=1
bloom_bit_count=44
bloom_hash_count=14
bloom_oldest=0
cache=468
cache_minimum=20
checkpoints=wiredtiger
checkpoint_log_size=50
checkpoint_wait=16
checksum=uncompressed
chunk_size=7
compaction=0
compression=snappy
data_extend=0
data_source=table
delete_pct=1
dictionary=0
direct_io=0
encryption=none
evict_max=3
file_type=row-store
firstfit=0
huffman_key=0
huffman_value=0
independent_thread_rng=0
in_memory=0
insert_pct=0
internal_key_truncation=1
internal_page_max=9
isolation=random
key_gap=10
key_max=256
key_min=256
leaf_page_max=9
leak_memory=0
logging=1
logging_archive=0
logging_compression=zlib
logging_file_max=422025
logging_prealloc=0
long_running_txn=0
lsm_worker_threads=4
memory_page_max=9
merge_max=8
mmap=1
modify_pct=0
ops=0
prefix_compression=1
prefix_compression_min=3
prepare=0
quiet=1
read_pct=59
rebalance=1
repeat_data_pct=11
reverse=0
rows=1000000
runs=1
salvage=1
split_pct=70
statistics=1
statistics_server=0
threads=26
timer=4
timing_stress_aggressive_sweep=0
timing_stress_checkpoint=0
timing_stress_lookaside_sweep=0
timing_stress_split_1=0
timing_stress_split_2=0
timing_stress_split_3=0
timing_stress_split_4=0
timing_stress_split_5=0
timing_stress_split_6=0
timing_stress_split_7=0
timing_stress_split_8=0
transaction_timestamps=0
transaction-frequency=50
truncate=1
value_max=3024
value_min=256
verify=1
wiredtiger_config=
write_pct=40
############################################