++ nice ./t -1 -c ../../../test/format/CONFIG.stress
snapshot-isolation error: Dumping page to RUNDIR/pagedump
ASAN:DEADLYSIGNAL
=================================================================
==13437==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x0000101a677c bp 0x3fff76efcc80 sp 0x3fff76efcc80 T53)
==13437==The signal is caused by a UNKNOWN memory access.
==13437==Hint: address points to the zero page.
snapshot-isolation error: Dumping page to RUNDIR/pagedump
ASAN:DEADLYSIGNAL
==13437==AddressSanitizer: while reporting a bug found another one. Ignoring.
snapshot-isolation error: Dumping page to RUNDIR/pagedump
ASAN:DEADLYSIGNAL
==13437==AddressSanitizer: while reporting a bug found another one. Ignoring.
snapshot-isolation error: Dumping page to RUNDIR/pagedump
ASAN:DEADLYSIGNAL
==13437==AddressSanitizer: while reporting a bug found another one. Ignoring.
snapshot-isolation error: Dumping page to RUNDIR/pagedump
ASAN:DEADLYSIGNAL
==13437==AddressSanitizer: while reporting a bug found another one. Ignoring.
    #0 0x101a6778 in __debug_page_metadata /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_debug.c:783:17
    #1 0x1019ae24 in __debug_page /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_debug.c:736:5
    #2 0x1019abb4 in __wt_debug_page /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_debug.c:678:5
    #3 0x1019b5cc in __wt_debug_cursor_page /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_debug.c:697:13
    #4 0x101768ac in snap_verify /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/test/format/../../../test/format/snap.c:197:5
    #5 0x10175220 in snap_repeat_txn /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/test/format/../../../test/format/snap.c:388:13
    #6 0x1015f230 in ops /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/test/format/../../../test/format/ops.c:946:19
    #7 0x1010dfdc in __asan::AsanThread::ThreadStart(unsigned long, __sanitizer::atomic_uintptr_t*) /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_thread.cc:257
    #8 0x1003a7b8 in asan_thread_start(void*) /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_interceptors.cc:305
    #9 0x3fff99678940 in start_thread (/lib64/power8/libpthread.so.0+0x8940)
    #10 0x3fff993c763c in __clone (/lib64/power8/libc.so.6+0x11763c)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/btree/bt_debug.c:783:17 in __debug_page_metadata
Thread T53 created by T0 here:
    #0 0x1003a878 in _ZN11__sanitizer18BufferedStackTraceC4Ev /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_interceptors.cc:314
    #1 0x1003a878 in pthread_create /home/dhows/llvm-git/projects/compiler-rt/lib/asan/asan_interceptors.cc:314
    #2 0x103a231c in __wt_thread_create /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/../src/os_posix/os_thread.c:28:5
    #3 0x10158dc0 in wts_ops /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/test/format/../../../test/format/ops.c:169:9
    #4 0x1017b21c in main /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer-ppc/build_posix/test/format/../../../test/format/t.c:212:17
    #5 0x3fff992d457c in generic_start_main.isra.0 (/lib64/power8/libc.so.6+0x2457c)
    #6 0x3fff992d4770 in __libc_start_main (/lib64/power8/libc.so.6+0x24770)

==13437==ABORTING
t: process 13437
/tmp/jenkins1635854801126787247.sh: line 20: 13437 Aborted                 (core dumped) nice ./t -1 -c ../../../test/format/CONFIG.stress 

############################################
#  RUN PARAMETERS
############################################
abort=0
alter=0
assert_commit_timestamp=1
assert_read_timestamp=0
auto_throttle=1
backups=0
bitcnt=3
bloom=1
bloom_bit_count=5
bloom_hash_count=26
bloom_oldest=0
cache=128
cache_minimum=20
checkpoints=wiredtiger
checkpoint_log_size=79
checkpoint_wait=96
checksum=uncompressed
chunk_size=4
compaction=0
compression=zlib
data_extend=0
data_source=table
delete_pct=5
dictionary=0
direct_io=0
encryption=rotn-7
evict_max=1
file_type=variable-length column-store
firstfit=0
huffman_key=0
huffman_value=0
independent_thread_rng=1
in_memory=0
insert_pct=0
internal_key_truncation=1
internal_page_max=9
isolation=snapshot
key_gap=11
key_max=46
key_min=15
leaf_page_max=17
leak_memory=0
logging=0
logging_archive=1
logging_compression=none
logging_file_max=337147
logging_prealloc=1
long_running_txn=0
lsm_worker_threads=3
memory_page_max=4
merge_max=7
mmap=1
modify_pct=0
ops=0
prefix_compression=1
prefix_compression_min=5
prepare=1
quiet=1
random_cursor=0
read_pct=92
rebalance=1
repeat_data_pct=42
reverse=0
rows=1000000
runs=1
salvage=1
split_pct=99
statistics=0
statistics_server=0
threads=16
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=1
transaction-frequency=100
truncate=1
value_max=903
value_min=18
verify=1
wiredtiger_config=
write_pct=3
############################################