Closed
Description
my English is so pool , so ...
this problem was happened in php7、php5.
php coredump info:
(gdb) where
#0 0x0000003dcbf8ff08 in main_arena () from /lib64/libc.so.6
#1 0x000000000079fa29 in _php_stream_set_option (stream=0x23d95e0, option=12, value=0,
ptrparam=<value optimized out>) at /root/workspace/php-5.5.22/main/streams/streams.c:1357
#2 0x000000000079fad8 in _php_stream_eof (stream=0x23d95e0)
at /root/workspace/php-5.5.22/main/streams/streams.c:781
#3 0x00007f5f33a705ec in redis_check_eof (redis_sock=0x7f5f32f1d990)
at /root/workspace/php-5.5.22/ext/phpredis/library.c:148
#4 0x00007f5f33a70abf in redis_sock_write (redis_sock=0x7f5f32f1d990,
cmd=0x7f5f32f2c0a8 "*2\r\n$3\r\nGET\r\n$12\r\nxiyuan_test3\r\n", sz=32)
at /root/workspace/php-5.5.22/ext/phpredis/library.c:1805
#5 0x00007f5f33a68bb8 in zim_Redis_get (ht=1, return_value=0x7f5f32f24638, return_value_ptr=0x7fff177895d0,
this_ptr=0x7f5f32f154b8, return_value_used=1) at /root/workspace/php-5.5.22/ext/phpredis/redis.c:1299
#6 0x00000000007dabd2 in zend_call_function (fci=0x7fff17789550, fci_cache=<value optimized out>)
at /root/workspace/php-5.5.22/Zend/zend_execute_API.c:952
#7 0x00000000006fffa7 in zif_call_user_func_array (ht=<value optimized out>, return_value=0x7f5f32f248d8,
return_value_ptr=<value optimized out>, this_ptr=<value optimized out>,
return_value_used=<value optimized out>) at /root/workspace/php-5.5.22/ext/standard/basic_functions.c:4813
#8 0x000000000086a843 in zend_do_fcall_common_helper_SPEC (execute_data=<value optimized out>)
at /root/workspace/php-5.5.22/Zend/zend_vm_execute.h:550
#9 0x000000000085c0c0 in execute_ex (execute_data=0x7f5f39e83b50)
at /root/workspace/php-5.5.22/Zend/zend_vm_execute.h:363
#10 0x00000000007dac2e in zend_call_function (fci=0x7fff17789860, fci_cache=<value optimized out>)
at /root/workspace/php-5.5.22/Zend/zend_execute_API.c:934
#11 0x0000000000800d47 in zend_call_method (object_pp=0x7fff17789988, obj_ce=<value optimized out>,
fn_proxy=0x7f5f32f1d438, function_name=0xd96513 "__call", function_name_len=<value optimized out>,
retval_ptr_ptr=0x7fff17789998, param_count=2, arg1=0x7f5f32f1fd38, arg2=0x7f5f32f16828)
at /root/workspace/php-5.5.22/Zend/zend_interfaces.c:97
#12 0x000000000080f6ed in zend_std_call_user_call (ht=<value optimized out>, return_value=0x7f5f32f23e18,
return_value_ptr=<value optimized out>, this_ptr=0x7f5f32f15430, return_value_used=<value optimized out>)
at /root/workspace/php-5.5.22/Zend/zend_object_handlers.c:899
#13 0x000000000086a843 in zend_do_fcall_common_helper_SPEC (execute_data=<value optimized out>)
at /root/workspace/php-5.5.22/Zend/zend_vm_execute.h:550
#14 0x000000000085c0c0 in execute_ex (execute_data=0x7f5f39e83778)
at /root/workspace/php-5.5.22/Zend/zend_vm_execute.h:363
#15 0x00000000007dac2e in zend_call_function (fci=0x7fff17789c30, fci_cache=<value optimized out>)
(gdb) zbacktrace
[0x7f0547e15bf0] Redis->get("u_c_2788480652167_dr") [internal function]
[0x7f0547e15b70] call_user_func_array(array(2)[0x7f0547e15bd0], array(1)[0x7f0547e15be0]) [internal function]
[0x7f0547e15a80] Beatles\Utils\Redis->__call("get", array(1)[0x7f0547e15af0]) /home/webroot/beatles/public/phputils/libraries/redis.php:98
[0x7f0547e159c0] Beatles\Api\Helper\UserCounter::getCount("2788480652167", 2) /home/webroot/beatles/application/api/helper/usercounter.php:273
[0x7f0547e15910] Beatles\Api\Helper\User::getUserTripNum("2788480652167") /home/webroot/beatles/application/api/helper/user.php:160
[0x7f0547e157c0] Beatles\Api\Helper\User::getUserDesc("2788480652167", 2, NULL, "4.3.5") /home/webroot/beatles/application/api/helper/user.php:173
[0x7f0547e153a0] Beatles\Api\Controller\Driver\Order\NearbyList->index(array(2)[0x7f0547e15400]) /home/webroot/beatles/application/api/controller/driver/order/nearbylist.php:433
[0x7f0547e15320] call_user_func_array(array(2)[0x7f0547e15380], array(1)[0x7f0547e15390]) [internal function]
[0x7f0547e15280] Beatles\Framework\Base\Router->run(array(2)[0x7f0547e152e0]) /home/webroot/beatles/public/phputils/base/router.php:109
[0x7f0547e15140] (main) /home/webroot/beatles/public/phputils/framework.php:79
[0x7f0547e15030] (main) /home/webroot/beatles/application/api/index.php:116repeate code :
<?php
//step 1
try{
$redis1 = testRedis();
if($redis1) {
var_dump($redis1->get('xiyuan_test1'));
echo "\n";
}
}catch(\RedisException $e){
echo 'redis error1: errno='.$e->getCode().' errmsg='.$e->getMessage()."\n";
}
//step 2
try{
$redis2 = testRedis();
sleep(10);
if($redis2) {
var_dump($redis2->get('xiyuan_test2')); // kill redis-server(/home/redis/bin/redis-server /home/redis/redis.conf && sleep 5 && ps -ef |grep redis |awk '{print $2}'|xargs kill -9) , force redis connection lost .
echo "\n";
}
}catch(\RedisException $e){
echo 'redis error2: errno='.$e->getCode().' errmsg='.$e->getMessage()."\n";
}
//step 3
try{
if($redis1){
var_dump($redis1->get('xiyuan_test3')); // at this line , core
echo "\n";
}
}catch(\RedisException $e){
echo 'redis error3: errno='.$e->getCode().' errmsg='.$e->getMessage()."\n";
}
function testRedis($ip='127.0.0.1',$port=6379,$timeout=0,$index=0){
try{
$instance = new \Redis();
$instance->pconnect($ip, $port, $timeout);
if($instance->select($index)){
return $instance;
}
}catch(\RedisException $e){
echo 'redis error4: errno='.$e->getCode().' errmsg='.$e->getMessage()."\n";
return false;
}
}program output :
`(gdb)` run test.php
Starting program: /usr/local/php/bin/php test.php
[Thread debugging using libthread_db enabled]
PHP Warning: PHP Startup: taint: Unable to initialize module
Module compiled with module API=20090626
PHP compiled with module API=20121212
These options need to match
in Unknown on line 0
bool(false)
redis error2: errno=0 errmsg=Connection lost
Program received signal SIGSEGV, Segmentation fault.
0x0000000300001800 in ?? ()Analysision && bug fix suggestion
step 1: new Redis1
Redis1 -> RedisSocket -> stream -> phpstream->context->fdstep 2: new Redis2
Redis1 -> RedisSocket ->
\
stream -> phpstream->context->fd
/
Redis2-> RedisSocket -> step2.1 $redis2->get
$redis2->get->redis_socket_write->check_stream_eof(*stream connection lost) -> php_stream_pclose(free *stream and resouce ).and then Redis2->redis_socket->stream = NULL;
but Redis1->redis_socket->stream is still exist. so the Redis1->redis_socket->stream is illegal.
step 3 $redis1->get
$redis1->get->redis_socket_write->check_stream_eof(core dump)because $redis1->redis_socket->stream has been free. so when check_stream_eof then core dump.
fix suggestion:
avoid muti Redis instance has the same *php_stream.
php:
use singleton ," ip+port+timeout" as key ;
phpredis
php_stream use singleton ," ip+port+timeout" as key ;
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