[WT-1240] wtperf core dump - MongoDB Jira

XML

Word

Printable

JSON

The email Sue & have been exchanging was about a core dump in wtperf, with the shared-cache-stress.wtperf runner.

I've been running that runner locally on a couple of machines, and I've seen one core dump. Here's the stack:

(gdb) where

#0  0x0000000801ac0bdb in strlen () from /lib/libc.so.7

WT-1  0x00000000004a6009 in __wt_config_subgets (session=0x80651e080,

    cfg=0x7ffff1f8fd70,

    key=0x635f646572616873 <Address 0x635f646572616873 out of bounds>,

    value=0x7ffff1f8fd50) at src/config/config.c:742

WT-2  0x000000000040dbe6 in wiredtiger_open (

    home=0x80301b300 "/tmp/WT_TEST/D22", event_handler=0x0,

    config=0x803026920 "create,statistics=(none),shared_cache=(name=wt-cache,size=536870912,reserve=10MB,chunk=20MB,)", wt_connp=0x80302e528)

    at src/conn/conn_api.c:1352

WT-3  0x0000000000409207 in close_reopen (cfg=0x80302e500) at wtperf.c:1352

WT-4  0x000000000040780b in start_run (cfg=0x80302e500) at wtperf.c:1801

WT-5  0x0000000000407e2d in thread_run_wtperf (arg=0x80302e500) at wtperf.c:1735

WT-6  0x00000008011474a4 in pthread_create () from /lib/libthr.so.3

WT-7  0x0000000000000000 in ?? ()

(gdb) frame 2

WT-2  0x000000000040dbe6 in wiredtiger_open (

    home=0x80301b300 "/tmp/WT_TEST/D22", event_handler=0x0,

    config=0x803026920 "create,statistics=(none),shared_cache=(name=wt-cache,size=536870912,reserve=10MB,chunk=20MB,)", wt_connp=0x80302e528)

    at src/conn/conn_api.c:1352

1352			ret = __wt_config_subgets(session, &cval, ft->name, &sval);

Current language:  auto; currently minimal

(gdb) p *ft

$1 = {name = 0x0, flag = 0}

(gdb) down

WT-1  0x00000000004a6009 in __wt_config_subgets (session=0x80651e080,

    cfg=0x7ffff1f8fd70,

    key=0x635f646572616873 <Address 0x635f646572616873 out of bounds>,

    value=0x7ffff1f8fd50) at src/config/config.c:742

742		    { key, strlen(key), 0, WT_CONFIG_ITEM_STRING };

(gdb) p key

$2 = 0x635f646572616873 <Address 0x635f646572616873 out of bounds>

(gdb) printf "%s\n", &key

shared_cp????

Maybe the stack got overwritten?

I've been running under valgrind, but no joy so far.

@sueloverso, @agorrod: I've kept the core, if anybody has ideas on things to look at.

is related to

WT-1243 Fix a bug in configuration parsing for lists.

related to

WT-1 placeholder WT-1

WT-2 What does metadata look like?

WT-3 What file formats are required?

WT-4 Flexible cursor traversals

WT-5 How does pget work: is it necessary?

WT-6 Complex schema example

WT-7 Do we need the handle->err/errx methods?

(3 related to)