问个valgrind 调试nginx的问题

paulvon73 · 2016-06-17T15:55:07+00:00

Hello你这个问题，最好问 resty.mongol 的作者你可以尝试&#...

问个valgrind 调试nginx的问题

paulvon73

Hi all：

用valgrind跟踪调试nginx内存的分配问题，为了便于调试将nginx配置成单进程模式，调试命令如下：

[work@dev-local.test.com output]$ valgrind --leak-check=full --show-reachable=yes --log-file=memcheck.txt ./sbin/nginx -p ./ -c conf/nginx.conf

nginx: [warn] duplicate MIME type "text/html" in ./conf/nginx.conf:42

Illegal instruction

[work@dev-local.test.com output]$

出现Illegal instruction错误，并且还产生了相应的core文件：

... ...

Core was generated by `'.

Program terminated with signal 4, Illegal instruction.

#0 0x000000000052683b in lj_alloc_malloc ()

Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.80.el6.x86_64 libgcc-4.4.6-4.el6.x86_64 libstdc++-4.4.6-4.el6.x86_64 nss-softokn-freebl-3.12.9-11.el6.x86_64 valgrind-3.6.0-5.el6.x86_64 zlib-1.2.3-27.el6.x86_64

(gdb) bt

#0 0x000000000052683b in lj_alloc_malloc ()

#1 0x000000000052f190 in lj_mem_realloc ()

#2 0x0000000000516ebd in lj_str_new ()

#3 0x000000000051be5c in lua_setfield ()

#4 0x000000000055c115 in luaopen_package ()

#5 0x000000000052c2fb in lj_BC_FUNCC ()

#6 0x000000000052aa81 in luaL_openlibs ()

#7 0x00000000004f43c1 in ngx_http_lua_new_state (parent_vm=0x0, cycle=0x4c984e0, pool=<value optimized out>, lmcf=0x4ca4b88,

log=0x9fce40, pcln=0x0) at addon/lua-nginx-module-ssl-cert-by-lua/src/ngx_http_lua_util.c:207

#8 ngx_http_lua_init_vm (parent_vm=0x0, cycle=0x4c984e0, pool=<value optimized out>, lmcf=0x4ca4b88, log=0x9fce40, pcln=0x0)

at addon/lua-nginx-module-ssl-cert-by-lua/src/ngx_http_lua_util.c:3714

#9 0x00000000004ef9c0 in ngx_http_lua_init (cf=0x7ff0000f0)

at addon/lua-nginx-module-ssl-cert-by-lua/src/ngx_http_lua_module.c:579

#10 0x0000000000477cae in ngx_http_block (cf=<value optimized out>, cmd=<value optimized out>, conf=<value optimized out>)

at src/http/ngx_http.c:311

#11 0x000000000045dbbf in ngx_conf_handler (cf=0x7ff0000f0, filename=0x4c98668) at src/core/ngx_conf_file.c:391

#12 ngx_conf_parse (cf=0x7ff0000f0, filename=0x4c98668) at src/core/ngx_conf_file.c:247

#13 0x000000000045b411 in ngx_init_cycle (old_cycle=0x7ff0001a0) at src/core/ngx_cycle.c:264

#14 0x000000000044d628 in main (argc=<value optimized out>, argv=<value optimized out>) at src/core/nginx.c:345

(gdb)

看core文件好像是luajit里面malloc分配出现错误，但是不知道怎么解决。大家有没有遇到过，谢谢了。

doujiang24

Hello

你有按照这个方式构建 LuaJIT ？

https://groups.google.com/d/msg/openresty/riEO_YXTwz4/T8cmm7_DBAAJ

2016-06-17 15:55 GMT+08:00 Paul Von <paul...@gmail.com>:

Hi all：

用valgrind跟踪调试nginx内存的分配问题，为了便于调试将nginx配置成单进程模式，调试命令如下：

[work@dev-local.test.com output]$ valgrind --leak-check=full --show-reachable=yes --log-file=memcheck.txt ./sbin/nginx -p ./ -c conf/nginx.conf
nginx: [warn] duplicate MIME type "text/html" in ./conf/nginx.conf:42
Illegal instruction
[work@dev-local.test.com output]$

出现Illegal instruction错误，并且还产生了相应的core文件：
... ...
Core was generated by `'.
Program terminated with signal 4, Illegal instruction.
#0 0x000000000052683b in lj_alloc_malloc ()
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.80.el6.x86_64 libgcc-4.4.6-4.el6.x86_64 libstdc++-4.4.6-4.el6.x86_64 nss-softokn-freebl-3.12.9-11.el6.x86_64 valgrind-3.6.0-5.el6.x86_64 zlib-1.2.3-27.el6.x86_64
(gdb) bt
#0 0x000000000052683b in lj_alloc_malloc ()
#1 0x000000000052f190 in lj_mem_realloc ()
#2 0x0000000000516ebd in lj_str_new ()
#3 0x000000000051be5c in lua_setfield ()
#4 0x000000000055c115 in luaopen_package ()
#5 0x000000000052c2fb in lj_BC_FUNCC ()
#6 0x000000000052aa81 in luaL_openlibs ()
#7 0x00000000004f43c1 in ngx_http_lua_new_state (parent_vm=0x0, cycle=0x4c984e0, pool=<value optimized out>, lmcf=0x4ca4b88,
log=0x9fce40, pcln=0x0) at addon/lua-nginx-module-ssl-cert-by-lua/src/ngx_http_lua_util.c:207
#8 ngx_http_lua_init_vm (parent_vm=0x0, cycle=0x4c984e0, pool=<value optimized out>, lmcf=0x4ca4b88, log=0x9fce40, pcln=0x0)
at addon/lua-nginx-module-ssl-cert-by-lua/src/ngx_http_lua_util.c:3714
#9 0x00000000004ef9c0 in ngx_http_lua_init (cf=0x7ff0000f0)
at addon/lua-nginx-module-ssl-cert-by-lua/src/ngx_http_lua_module.c:579
#10 0x0000000000477cae in ngx_http_block (cf=<value optimized out>, cmd=<value optimized out>, conf=<value optimized out>)
at src/http/ngx_http.c:311
#11 0x000000000045dbbf in ngx_conf_handler (cf=0x7ff0000f0, filename=0x4c98668) at src/core/ngx_conf_file.c:391
#12 ngx_conf_parse (cf=0x7ff0000f0, filename=0x4c98668) at src/core/ngx_conf_file.c:247
#13 0x000000000045b411 in ngx_init_cycle (old_cycle=0x7ff0001a0) at src/core/ngx_cycle.c:264
#14 0x000000000044d628 in main (argc=<value optimized out>, argv=<value optimized out>) at src/core/nginx.c:345
(gdb)

看core文件好像是luajit里面malloc分配出现错误，但是不知道怎么解决。大家有没有遇到过，谢谢了。

--

agentzh

Hello!

On Fri, Jun 17, 2016 at 12:55 AM, Paul Von wrote:
> 用valgrind跟踪调试nginx内存的分配问题，为了便于调试将nginx配置成单进程模式，调试命令如下：
>
> [work@dev-local.test.com output]$ valgrind --leak-check=full
> --show-reachable=yes --log-file=memcheck.txt ./sbin/nginx -p ./ -c
> conf/nginx.conf
> nginx: [warn] duplicate MIME type "text/html" in ./conf/nginx.conf:42
> Illegal instruction
> [work@dev-local.test.com output]$
>
> 出现Illegal instruction错误，并且还产生了相应的core文件：
> ... ...
> Core was generated by `'.
> Program terminated with signal 4, Illegal instruction.

Valgrind 运行出现非法指令错误，通常是因为 Valgrind 版本过低所致。建议升级到最新的 3.11 版：

    http://valgrind.org/

> Missing separate debuginfos, use: debuginfo-install
> glibc-2.12-1.80.el6.x86_64 libgcc-4.4.6-4.el6.x86_64
> libstdc++-4.4.6-4.el6.x86_64 nss-softokn-freebl-3.12.9-11.el6.x86_64
> valgrind-3.6.0-5.el6.x86_64 zlib-1.2.3-27.el6.x86_64

貌似你用的还是 Valgrind 3.6.0. 果然很老啊！

Regards,
-agentzh