mongo-php-driver mongoc_counters_cleanup coredump

[badxpgy]

contact method：China QQ: 37350968 or 37350968@qq.com
Operation environment
php7.0.2
install extension
opcache
swoole-1.8.2.tgz https://pecl.php.net/package/swoole
mongodb-1.1.2.tgz

Attach script files
mongo-core.zip

1. Run swoole-server example;

ulimit -c unlimited
/usr/local/php7/bin/php mongo_core_server.php

2. Reproduce coredump method

/usr/local/php7/bin/php mongo_core_client.php

3. View the root directory will find core.xxx file

4. core.xxx gdb bt

   _mongoc_counters_cleanup ()

warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7fff1b51e000
Core was generated by `/usr/local/php7/bin/php mongo_core.php'.
Program terminated with signal 11, Segmentation fault.
#0  zend_mm_free_heap (ptr=<value optimized out>) at /data/wwwroot/source_code/php-7.0.2/Zend/zend_alloc.c:1400
1400            ZEND_MM_CHECK(chunk->heap == heap, "zend_mm_heap corrupted");
(gdb) bt full
#0  zend_mm_free_heap (ptr=<value optimized out>) at /data/wwwroot/source_code/php-7.0.2/Zend/zend_alloc.c:1400
        chunk = 0x1f400000
        page_num = 500
        info = <value optimized out>
        page_offset = 2051360
#1  _efree (ptr=<value optimized out>) at /data/wwwroot/source_code/php-7.0.2/Zend/zend_alloc.c:2458
No locals.
#2  0x00002b7127f04d15 in _mongoc_counters_cleanup () at /data/wwwroot/swoole_server/extensions/mongodb-1.1.2/src/libmongoc/src/mongoc/mongoc-counters.c:132
No locals.
#3  0x0000003154a0c1d3 in pthread_once () from /lib64/libpthread.so.0
No symbol table info available.
#4  0x00002b7127ed376f in __do_global_dtors_aux () from /usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/mongodb.so
No symbol table info available.
#5  0x000000001f726070 in ?? ()
No symbol table info available.
#6  0x00007fff1b4405a0 in ?? ()
No symbol table info available.
#7  0x00002b7127f2c761 in _fini () from /usr/local/php7/lib/php/extensions/no-debug-non-zts-20151012/mongodb.so
No symbol table info available.
#8  0x00007fff1b4405a0 in ?? ()
No symbol table info available.
#9  0x0000003153e0da94 in _dl_fini () from /lib64/ld-linux-x86-64.so.2
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

[ixqbar]

used jemalloc？

[derickr]

Do you have a reproducible script to go with this segfault?

[badxpgy]

@derickr up

[badxpgy]

@Jonnywang
没有使用 ("did not use")

[badxpgy]

@derickr
mongo-core.zip

1. Run swoole-server example;
   ulimit -c unlimited
   /usr/local/php7/bin/php mongo_core_server.php
   2.Reproduce coredump method
   /usr/local/php7/bin/php mongo_core_client.php

[bjori]

This could be related to #209

[jmikola]

I've since released 1.1.5, which I believe may fix this issue if it is indeed a duplicate of #209. I will leave it open for you to confirm.

Note that the patch is only able to resolve the problem when libmongoc is bundled (i.e. statically compiled) with the driver. If libmongoc is loaded as a system library, that will rely on an upstream fix (see: CDRIVER-1165).

[badxpgy]

@jmikola Has been solved
Thank you!