Attempt to discard dirty page during verify operation

 ++ SEGFAULT_SIGNALS=all

++ nice catchsegv ./t -1 -c ../../../test/format/CONFIG.stress

[1534214565:181172][39585:0x3ff47fff910], t, file:wt.wt, WT_SESSION.verify: __wt_page_out, 75: !__wt_page_is_modified(page)

[1534214565:181666][39585:0x3ff47fff910], t, file:wt.wt, WT_SESSION.verify: __wt_abort, 30: aborting WiredTiger library

t: process 39585

*** Aborted

Register dump:

 GPR0: 0000000000000000  GPR1: 000003ff47fff910  GPR2: 0000000000000000  GPR3: 0000000000009acd

 GPR4: 0000000000000006  GPR5: 000003ff00000002  GPR6: 000000008024fb2c  GPR7: 000003ffce67f170

 GPR8: 0000000080003948  GPR9: 000003ff47fff200  GPRA: 000003ff47fff910  GPRB: 000003ff948ac4a8

 GPRC: 000003ff948aa000  GPRD: 000003ff948ac4b8  GPRE: 000003ff94742300  GPRF: 000003ff47ffdbc0

 PSW.MASK: 0705200180000000  PSW.ADDR: 000003ff94740a78  TRAP: 

Backtrace:

/lib64/libc.so.6(gsignal+0x40)[0x3ff94740a78]

/lib64/libc.so.6(abort+0x128)[0x3ff94742300]

/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/os_common/os_alloc.c:34(__wt_calloc)[0x8006a4b8]

/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/btree/bt_discard.c:76(__wt_page_out)[0x8010d2ac]

/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/btree/bt_discard.c:45(__wt_ref_out)[0x8010d1c2]

/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/evict/evict_file.c:126(__wt_evict_file)[0x801ba95c]

/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/btree/bt_sync.c:434(__wt_cache_op)[0x8014720a]

/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/btree/bt_vrfy.c:249(__wt_verify)[0x8014a830]

/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/schema/schema_worker.c:35(__wt_exclusive_handle_operation)[0x800a6fd8]

/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/schema/schema_worker.c:75(__wt_schema_worker)[0x800a717a]

/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/schema/schema_worker.c:113(__wt_schema_worker)[0x800a74f2]

/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/session/session_api.c:1608 (discriminator 2)(__session_verify)[0x800b8cd6]

/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/test/format/../../../test/format/backup.c:53(check_copy)[0x80003cae]

/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/test/format/../../../test/format/backup.c:120(backup)[0x80004442]

/lib64/libpthread.so.0(+0x81f2)[0x3ff94a881f2]

/lib64/libc.so.6(+0x1098da)[0x3ff948098da]

############################################

#  RUN PARAMETERS

############################################

abort=0

alter=0

auto_throttle=1

backups=1

bitcnt=3

bloom=1

bloom_bit_count=17

bloom_hash_count=12

bloom_oldest=1

cache=30

cache_minimum=20

checkpoints=on

checkpoint_log_size=63

checkpoint_wait=94

checksum=on

chunk_size=6

compaction=1

compression=lz4

data_extend=0

data_source=table

delete_pct=4

dictionary=0

direct_io=0

encryption=none

evict_max=1

file_type=row-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=random

key_gap=6

key_max=65

key_min=21

leaf_page_max=13

leak_memory=0

logging=0

logging_archive=1

logging_compression=none

logging_file_max=207240

logging_prealloc=1

long_running_txn=0

lsm_worker_threads=3

merge_max=5

mmap=1

modify_pct=94

ops=0

prefix_compression=0

prefix_compression_min=8

prepare=0

quiet=1

read_pct=1

rebalance=1

repeat_data_pct=31

reverse=0

rows=1000000

runs=1

salvage=1

split_pct=53

statistics=1

statistics_server=0

threads=30

timer=4

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=12

truncate=1

value_max=3966

value_min=15

verify=1

wiredtiger_config=

write_pct=1

############################################