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php 7.1.6 + mysql_xdevapi + ast 0.1.4 = segfault #59

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remicollet opened this issue Jun 14, 2017 · 2 comments
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php 7.1.6 + mysql_xdevapi + ast 0.1.4 = segfault #59

remicollet opened this issue Jun 14, 2017 · 2 comments

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@remicollet
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Working on phan test suite

$ gdb php71
(gdb) run -d extension=mysql_xdevapi.so /usr/bin/phan --version
Program received signal SIGSEGV, Segmentation fault.
(gdb) bt
#0  0x00007ffff48b8f86 in strlen () from /lib64/libc.so.6
#1  0x000055555568b1ac in reflection_type_name (param=<optimized out>) at /usr/src/debug/php-7.1.6/ext/reflection/php_reflection.c:3020
#2  0x00005555556992ba in zim_reflection_type___toString (execute_data=0x7ffff3813c30, return_value=0x7fffffff9d60)
    at /usr/src/debug/php-7.1.6/ext/reflection/php_reflection.c:3046
#3  0x000055555579ccd3 in zend_call_function (fci=fci@entry=0x7fffffff9c90, fci_cache=<optimized out>, fci_cache@entry=0x7fffffff9c60)
    at /usr/src/debug/php-7.1.6/Zend/zend_execute_API.c:871
#4  0x00005555557cb3d4 in zend_call_method (object=object@entry=0x7ffff3813ac0, obj_ce=obj_ce@entry=0x555555cc7920, fn_proxy=fn_proxy@entry=0x555555cc7a50, 
    function_name=function_name@entry=0x5555558a99ab "__tostring", function_name_len=function_name_len@entry=10, retval_ptr=retval_ptr@entry=0x7fffffff9d60, param_count=0, 
    arg1=0x0, arg2=0x0) at /usr/src/debug/php-7.1.6/Zend/zend_interfaces.c:99
#5  0x00005555557e7a83 in zend_std_cast_object_tostring (readobj=0x7ffff3813ac0, writeobj=0x7fffffff9de0, type=<optimized out>)
    at /usr/src/debug/php-7.1.6/Zend/zend_object_handlers.c:1631
#6  0x00005555557a350e in _zval_get_string_func (op=op@entry=0x7ffff3813ac0) at /usr/src/debug/php-7.1.6/Zend/zend_operators.c:887
#7  0x000055555583e768 in _zval_get_string (op=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_operators.h:276
#8  ZEND_CAST_SPEC_CV_HANDLER () at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:35429
#9  0x00005555557f68bb in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:429
#10 0x000055555584f68e in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER () at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:1076
#11 0x00005555557f68bb in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:429
#12 0x000055555584f68e in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER () at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:1076
#13 0x00005555557f68bb in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:429
#14 0x000055555584f68e in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER () at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:1076
#15 0x00005555557f68bb in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:429
#16 0x000055555579cbb4 in zend_call_function (fci=0x7ffff3813a70, fci@entry=0x7fffffffa100, fci_cache=<optimized out>, fci_cache@entry=0x7fffffffa0d0)
    at /usr/src/debug/php-7.1.6/Zend/zend_execute_API.c:855
#17 0x00005555556e033e in zif_array_map (execute_data=<optimized out>, return_value=0x7ffff38137d0) at /usr/src/debug/php-7.1.6/ext/standard/array.c:5359
#18 0x000055555584f5bc in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER () at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:1099
#19 0x00005555557f68bb in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:429
#20 0x000055555584f68e in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER () at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:1076
#21 0x00005555557f68bb in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:429
#22 0x000055555584f68e in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER () at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:1076
#23 0x00005555557f68bb in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:429
#24 0x000055555584f68e in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER () at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:1076
#25 0x00005555557f68bb in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:429
#26 0x000055555584f68e in ZEND_DO_FCALL_SPEC_RETVAL_USED_HANDLER () at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:1076
#27 0x00005555557f68bb in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:429
#28 0x000055555584fc1c in ZEND_DO_FCALL_SPEC_RETVAL_UNUSED_HANDLER () at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:949
#29 0x00005555557f68bb in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:429
#30 0x000055555584fc1c in ZEND_DO_FCALL_SPEC_RETVAL_UNUSED_HANDLER () at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:949
#31 0x00005555557f68bb in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:429
#32 0x000055555584c774 in ZEND_INCLUDE_OR_EVAL_SPEC_CONST_HANDLER () at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:3479
#33 0x00005555557f68bb in execute_ex (ex=<optimized out>) at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:429
#34 0x0000555555851c28 in zend_execute (op_array=op_array@entry=0x7ffff3887000, return_value=return_value@entry=0x7fffd2a5ce50)
    at /usr/src/debug/php-7.1.6/Zend/zend_vm_execute.h:474
#35 0x00005555557acd33 in zend_execute_scripts (type=-209635472, type@entry=8, retval=0x7fffd2a5ce50, retval@entry=0x0, file_count=file_count@entry=3)
    at /usr/src/debug/php-7.1.6/Zend/zend.c:1476
#36 0x0000555555748d20 in php_execute_script (primary_file=0x7fffffffca20) at /usr/src/debug/php-7.1.6/main/main.c:2537
#37 0x0000555555853e8c in do_cli (argc=5, argv=0x555555bcc200) at /usr/src/debug/php-7.1.6/sapi/cli/php_cli.c:993
#38 0x000055555562158a in main (argc=5, argv=0x555555bcc200) at /usr/src/debug/php-7.1.6/sapi/cli/php_cli.c:1381
@remicollet
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Ok, mysql_xdevapi looks like another Abandonware... so probably only FYI, but perhaps may happens with some other extension.

@nikic
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nikic commented Jun 20, 2017

Pretty unlikely that this is a bug in php-ast. Most likely some refcounting issue in the ext that happens to manifest in this way.

@nikic nikic closed this as completed Jun 20, 2017
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@nikic @remicollet