编译错误 #1

randall05 · 2010-06-25T08:19:41Z

编译时发生如下错误：
ake -f objs/Makefile
make[1]: Entering directory /root/nginx-0.7.65' gcc -c -DNDK -DNDK_SET_VAR -I src/core -I src/event -I src/event/modules -I src/os/unix -I objs -I src/http -I src/http/modules -I /root/nginx-module/simpl-it-ngx_devel_kit-7ccc46d -I /root/nginx-module/simpl-it-ngx_devel_kit-7ccc46d/src -I /root/nginx-module/simpl-it-ngx_devel_kit-7ccc46d/src/auto -I src/mail \ -o objs/addon/src/ngx_http_lua_util.o \ /root/nginx-module/lua-nginx-module/src/ngx_http_lua_util.c gcc -c -DNDK -DNDK_SET_VAR -I src/core -I src/event -I src/event/modules -I src/os/unix -I objs -I src/http -I src/http/modules -I /root/nginx-module/simpl-it-ngx_devel_kit-7ccc46d -I /root/nginx-module/simpl-it-ngx_devel_kit-7ccc46d/src -I /root/nginx-module/simpl-it-ngx_devel_kit-7ccc46d/src/auto -I src/mail \ -o objs/addon/src/ngx_http_lua_cache.o \ /root/nginx-module/lua-nginx-module/src/ngx_http_lua_cache.c /root/nginx-module/lua-nginx-module/src/ngx_http_lua_util.c: In function ‘ngx_http_lua_var_get’: /root/nginx-module/lua-nginx-module/src/ngx_http_lua_util.c:320: 错误：提供给函数 ‘ngx_http_get_variable’ 的实参太少 make[1]: *** [objs/addon/src/ngx_http_lua_util.o] 错误 1 make[1]: *** 正在等待未完成的任务.... make[1]: Leaving directory/root/nginx-0.7.65'
make: *** [build] 错误 2

环境：
CentOS 5.3
nginx-0.7.65
Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Rio
ReadMe文件中所说的三个模块均是从github上下载的最新tar包

The text was updated successfully, but these errors were encountered:

chaoslawful · 2010-06-25T08:37:21Z

nginx接口向前兼容问题，fixing....

chaoslawful · 2010-06-25T09:02:59Z

fixed，请用HEAD再试一下

randall05 · 2010-06-25T10:39:54Z

呃……我自己也是临时把第四个参数设成1了，编译可通过。

syn

This issue appeared in our EC2 test cluster, which compiles Nginx with `-DNGX_LUA_USE_ASSERT` and `-DNGX_LUA_ABORT_AT_PANIC`. The lua-resty-redis test: === TEST 1: github issue openresty#108: ngx.locaiton.capture + redis.set_keepalive in t/bugs.t [1] would produce core dumps in the check leak testing mode. The backtrace for these core dumps was: #0 0x00007fd417bee277 in raise () from /lib64/libc.so.6 openresty#1 0x00007fd417bef968 in abort () from /lib64/libc.so.6 openresty#2 0x00007fd417be7096 in __assert_fail_base () from /lib64/libc.so.6 openresty#3 0x00007fd417be7142 in __assert_fail () from /lib64/libc.so.6 openresty#4 0x000000000050d227 in ngx_http_lua_socket_tcp_resume_conn_op (spool=c/ngx_http_lua_socket_tcp.c:3963 openresty#5 0x000000000050e51a in ngx_http_lua_socket_tcp_finalize (r=r@entry=0x5628) at ../../src/ngx_http_lua_socket_tcp.c:4195 openresty#6 0x000000000050e570 in ngx_http_lua_socket_tcp_cleanup (data=0x7fd419p_lua_socket_tcp.c:3755 openresty#7 0x0000000000463aa5 in ngx_http_free_request (r=r@entry=0xbfaec0, rc=http_request.c:3508 ... Which was caused by the following assertion in ngx_http_lua_socket_tcp.c with `NGX_DEBUG`: #if (NGX_DEBUG) ngx_http_lua_assert(spool->connections >= 0); #else Thanks to Mozilla's rr, a recorded session showed that `spool->connections` was `-1`. Unfortunately, reproducing this case does not seem possible, since the failure is due to the request cleanup (`ngx_http_free_request`). Here is an explanation: -- thread 1 local sock = ngx.socket.tcp() sock:connect() sock:setkeepalive() -- pool created, connections: 1 -- thread 2 local sock = ngx.socket.tcp() sock:connect() -- from pool, connections: 1 -- thread 1 -- sock from thread 1 idle timeout, closes, and calls -- ngx_http_lua_socket_tcp_finalize, connections: 0 -- thread 2 sock:setkeepalive() -- connections: -1 -- ngx_http_lua_socket_tcp_resume_conn_op gets called, assertion fails In order to avoid this race condition, we must determine whether the socket pool exists or not, not from the `ngx_http_lua_socket_tcp_upstream` struct, but from the Lua Registry. This way, when thread 2's socket enters the keepalive state, it will respect the previous call to `ngx_http_lua_socket_free_pool` (which unset the pool from the registry). [1]: https://github.com/openresty/lua-resty-redis/blob/master/t/bugs.t

This issue appeared in our EC2 test cluster, which compiles Nginx with `-DNGX_LUA_USE_ASSERT` and `-DNGX_LUA_ABORT_AT_PANIC`. The lua-resty-redis test: === TEST 1: github issue openresty#108: ngx.locaiton.capture + redis.set_keepalive in t/bugs.t [1] would produce core dumps in the check leak testing mode. The backtrace for these core dumps was: #0 0x00007fd417bee277 in raise () from /lib64/libc.so.6 openresty#1 0x00007fd417bef968 in abort () from /lib64/libc.so.6 openresty#2 0x00007fd417be7096 in __assert_fail_base () from /lib64/libc.so.6 openresty#3 0x00007fd417be7142 in __assert_fail () from /lib64/libc.so.6 openresty#4 0x000000000050d227 in ngx_http_lua_socket_tcp_resume_conn_op (spool=c/ngx_http_lua_socket_tcp.c:3963 openresty#5 0x000000000050e51a in ngx_http_lua_socket_tcp_finalize (r=r@entry=0x5628) at ../../src/ngx_http_lua_socket_tcp.c:4195 openresty#6 0x000000000050e570 in ngx_http_lua_socket_tcp_cleanup (data=0x7fd419p_lua_socket_tcp.c:3755 openresty#7 0x0000000000463aa5 in ngx_http_free_request (r=r@entry=0xbfaec0, rc=http_request.c:3508 ... Which was caused by the following assertion in ngx_http_lua_socket_tcp.c with `NGX_DEBUG`: #if (NGX_DEBUG) ngx_http_lua_assert(spool->connections >= 0); #else Thanks to Mozilla's rr, a recorded session showed that `spool->connections` was `-1`. Here is a reproducible test case: local sock1 = ngx.socket.tcp() local sock2 = ngx.socket.tcp() sock1:connect() sock2:connect() sock1:setkeepalive() -- pool created, connections: 1 sock2:setkeepalive() -- connections: 1 sock1:connect() -- connections: 1 sock2:connect() -- connections: 1 sock1:close() -- connections: 0 sock2:close() -- connections: -1 -- ngx_http_lua_socket_tcp_resume_conn_op gets called, assertion fails In order to avoid this race condition, we must determine whether the socket pool exists or not, not from the `ngx_http_lua_socket_tcp_upstream` struct, but from the Lua Registry. This way, when thread 2's socket enters the keepalive state, it will respect the previous call to `ngx_http_lua_socket_free_pool` (which unset the pool from the registry). [1]: https://github.com/openresty/lua-resty-redis/blob/master/t/bugs.t

…found by coverity deref_ptr: Directly dereferencing pointer c. 419 if (c->addr_text.len) { 420 p = ngx_snprintf(buf, len, ", client: %V", &c->addr_text); 421 len -= p - buf; 422 buf = p; 423 } 424 CID 149837 (openresty#1 of 1): Dereference before null check (REVERSE_INULL)check_after_deref: Null-checking c suggests that it may be null, but it has already been dereferenced on all paths leading to the check. 425 if (c && c->listening && c->listening->addr_text.len) { 426 p = ngx_snprintf(buf, len, ", server: %V", &c->listening->addr_text); 427 /* len -= p - buf; */ 428 buf = p; 429 }

…found by coverity deref_ptr: Directly dereferencing pointer c. 419 if (c->addr_text.len) { 420 p = ngx_snprintf(buf, len, ", client: %V", &c->addr_text); 421 len -= p - buf; 422 buf = p; 423 } 424 CID 149837 (#1 of 1): Dereference before null check (REVERSE_INULL)check_after_deref: Null-checking c suggests that it may be null, but it has already been dereferenced on all paths leading to the check. 425 if (c && c->listening && c->listening->addr_text.len) { 426 p = ngx_snprintf(buf, len, ", server: %V", &c->listening->addr_text); 427 /* len -= p - buf; */ 428 buf = p; 429 }

…eference found by Coverity 443 c = log->data; 444 deref_ptr: Directly dereferencing pointer c. 445 if (c->addr_text.len) { 446 p = ngx_snprintf(buf, len, ", client: %V", &c->addr_text); 447 len -= p - buf; 448 buf = p; 449 } 450 CID 251611 (openresty#1 of 1): Dereference before null check (REVERSE_INULL)check_after_deref: Null-checking c suggests that it may be null, but it has already been dereferenced on all paths leading to the check. 451 if (c && c->listening && c->listening->addr_text.len) { 452 p = ngx_snprintf(buf, len, ", server: %V", &c->listening->addr_text); 453 buf = p; 454 }

…eference found by Coverity 329 c = log->data; 330 deref_ptr: Directly dereferencing pointer c. 331 if (c->addr_text.len) { 332 p = ngx_snprintf(buf, len, ", client: %V", &c->addr_text); 333 len -= p - buf; 334 buf = p; 335 } 336 CID 251578 (openresty#1 of 1): Dereference before null check (REVERSE_INULL)check_after_deref: Null-checking c suggests that it may be null, but it has already been dereferenced on all paths leading to the check. 337 if (c && c->listening && c->listening->addr_text.len) { 338 p = ngx_snprintf(buf, len, ", server: %V", &c->listening->addr_text); 339 buf = p; 340 } 341

… by Coverity 734 buf = p; 735 deref_ptr: Directly dereferencing pointer c. 736 if (c->addr_text.len) { 737 p = ngx_snprintf(buf, len, ", client: %V", &c->addr_text); 738 len -= p - buf; 739 buf = p; 740 } 741 CID 149839 (openresty#1 of 1): Dereference before null check (REVERSE_INULL)check_after_deref: Null-checking c suggests that it may be null, but it has already been dereferenced on all paths leading to the check. 742 if (c && c->listening && c->listening->addr_text.len) { 743 p = ngx_snprintf(buf, len, ", server: %V", &c->listening->addr_text); 744 /* len -= p - buf; */ 745 buf = p; 746 }

734 buf = p; 735 deref_ptr: Directly dereferencing pointer c. 736 if (c->addr_text.len) { 737 p = ngx_snprintf(buf, len, ", client: %V", &c->addr_text); 738 len -= p - buf; 739 buf = p; 740 } 741 CID 149839 (#1 of 1): Dereference before null check (REVERSE_INULL)check_after_deref: Null-checking c suggests that it may be null, but it has already been dereferenced on all paths leading to the check. 742 if (c && c->listening && c->listening->addr_text.len) { 743 p = ngx_snprintf(buf, len, ", server: %V", &c->listening->addr_text); 744 /* len -= p - buf; */ 745 buf = p; 746 }

==openresty==70603==ERROR: AddressSanitizer: memcpy-param-overlap: memory ranges [0x621000001500,0x621000002181) and [0x62100000187f, 0x621000002500) overlap #0 0x7f3db1899ffe (/lib64/libasan.so.5+0x99ffe) #1 0x9da926 (/usr/local/openresty-debug/nginx/sbin/nginx+0x9da926) #2 0x9dd1a1 (/usr/local/openresty-debug/nginx/sbin/nginx+0x9dd1a1) #3 0x4c89c6 (/usr/local/openresty-debug/nginx/sbin/nginx+0x4c89c6) #4 0x5d1e4e (/usr/local/openresty-debug/nginx/sbin/nginx+0x5d1e4e) #5 0x4c89c6 (/usr/local/openresty-debug/nginx/sbin/nginx+0x4c89c6) #6 0x5b8583 (/usr/local/openresty-debug/nginx/sbin/nginx+0x5b8583) #7 0x4c89c6 (/usr/local/openresty-debug/nginx/sbin/nginx+0x4c89c6) #8 0x4b4419 (/usr/local/openresty-debug/nginx/sbin/nginx+0x4b4419) #9 0x427f16 (/usr/local/openresty-debug/nginx/sbin/nginx+0x427f16) #10 0x7f3daff27554 (/lib64/libc.so.6+0x22554) #11 0x42d537 (/usr/local/openresty-debug/nginx/sbin/nginx+0x42d537)

deref_ptr: Directly dereferencing pointer ctx. 1143 *ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module); CID 258020 (openresty#1 of 1): Dereference before null check (REVERSE_INULL)check_after_deref: Null-checking ctx suggests that it may be null, but it has already been dereferenced on all paths leading to the check. 1144 if (ctx == NULL) { 1145 return NGX_HTTP_LUA_FFI_NO_REQ_CTX; 1146 }

…2051) deref_ptr: Directly dereferencing pointer ctx. 1143 *ctx = ngx_http_get_module_ctx(r, ngx_http_lua_module); CID 258020 (#1 of 1): Dereference before null check (REVERSE_INULL)check_after_deref: Null-checking ctx suggests that it may be null, but it has already been dereferenced on all paths leading to the check. 1144 if (ctx == NULL) { 1145 return NGX_HTTP_LUA_FFI_NO_REQ_CTX; 1146 }

} else if (tctx.pool) { CID 251579 (#1 of 1): Use after free (USE_AFTER_FREE) 18. deref_arg: Calling ngx_destroy_pool dereferences freed pointer tctx.pool. 762 ngx_destroy_pool(tctx.pool); 763 } 764}

…t_peer at function end. Avoid inserting new parameters in the middle of the function to prevent core dumps when using old lua-resty-core with new lua-nginx-module. Example stack trace: ``` Message: Process 1414245 (nginx) of user 1000 dumped core. Stack trace of thread 1414245: #0 0x00007ff596938285 __strlen_avx2 (libc.so.6 + 0x162285) openresty#1 0x00007ff596f623d2 lj_cf_ffi_string (libluajit-5.1.so.2 + 0x523d2) openresty#2 0x00007ff596f1bb4b lj_BC_FUNCC (libluajit-5.1.so.2 + 0xbb4b) openresty#3 0x00007ff596f74223 lua_pcall (libluajit-5.1.so.2 + 0x64223) openresty#4 0x00000000005044b7 n/a (/home/jiahao/work/org/lua-resty-core/work/nginx/sbin/nginx + 0x1044b7) ```

…t function end. Avoid inserting new parameters in the middle of the function to prevent core dumps when using old lua-resty-core with new lua-nginx-module. Example stack trace: ``` Message: Process 2199905 (nginx) of user 1000 dumped core. Stack trace of thread 2199905: #0 0x00007ffaf1e4b385 in OPENSSL_sk_num (st=st@entry=0xffffffff) at crypto/stack/stack.c:382 openresty#1 0x0000000000510aba in sk_X509_num (sk=0xffffffff) at /opt/ssl/include/openssl/x509.h:99 openresty#2 ngx_http_lua_ffi_ssl_verify_client (r=<optimized out>, client_certs=<optimized out>, trusted_certs=0xffffffff, depth=<optimized out>, err=0x0) at /home/jiahao/work/org/lua-nginx-module/src/ngx_http_lua_ssl_certby.c:1588 ```

…t_peer at function end. Avoid inserting new parameters in the middle of the function to prevent core dumps when using old lua-resty-core with new lua-nginx-module. Example stack trace: ``` Message: Process 1414245 (nginx) of user 1000 dumped core. Stack trace of thread 1414245: #0 0x00007ff596938285 __strlen_avx2 (libc.so.6 + 0x162285) openresty#1 0x00007ff596f623d2 lj_cf_ffi_string (libluajit-5.1.so.2 + 0x523d2) openresty#2 0x00007ff596f1bb4b lj_BC_FUNCC (libluajit-5.1.so.2 + 0xbb4b) openresty#3 0x00007ff596f74223 lua_pcall (libluajit-5.1.so.2 + 0x64223) openresty#4 0x00000000005044b7 n/a (/home/jiahao/work/org/lua-resty-core/work/nginx/sbin/nginx + 0x1044b7) ```

…t function end. Avoid inserting new parameters in the middle of the function to prevent core dumps when using old lua-resty-core with new lua-nginx-module. Example stack trace: ``` Message: Process 2199905 (nginx) of user 1000 dumped core. Stack trace of thread 2199905: #0 0x00007ffaf1e4b385 in OPENSSL_sk_num (st=st@entry=0xffffffff) at crypto/stack/stack.c:382 openresty#1 0x0000000000510aba in sk_X509_num (sk=0xffffffff) at /opt/ssl/include/openssl/x509.h:99 openresty#2 ngx_http_lua_ffi_ssl_verify_client (r=<optimized out>, client_certs=<optimized out>, trusted_certs=0xffffffff, depth=<optimized out>, err=0x0) at /home/jiahao/work/org/lua-nginx-module/src/ngx_http_lua_ssl_certby.c:1588 ```

…t_peer at function end. Avoid inserting new parameters in the middle of the function to prevent core dumps when using old lua-resty-core with new lua-nginx-module. Example stack trace: ``` Message: Process 1414245 (nginx) of user 1000 dumped core. Stack trace of thread 1414245: #0 0x00007ff596938285 __strlen_avx2 (libc.so.6 + 0x162285) openresty#1 0x00007ff596f623d2 lj_cf_ffi_string (libluajit-5.1.so.2 + 0x523d2) openresty#2 0x00007ff596f1bb4b lj_BC_FUNCC (libluajit-5.1.so.2 + 0xbb4b) openresty#3 0x00007ff596f74223 lua_pcall (libluajit-5.1.so.2 + 0x64223) openresty#4 0x00000000005044b7 n/a (/home/jiahao/work/org/lua-resty-core/work/nginx/sbin/nginx + 0x1044b7) ```

…t function end. Avoid inserting new parameters in the middle of the function to prevent core dumps when using old lua-resty-core with new lua-nginx-module. Example stack trace: ``` Message: Process 2199905 (nginx) of user 1000 dumped core. Stack trace of thread 2199905: #0 0x00007ffaf1e4b385 in OPENSSL_sk_num (st=st@entry=0xffffffff) at crypto/stack/stack.c:382 openresty#1 0x0000000000510aba in sk_X509_num (sk=0xffffffff) at /opt/ssl/include/openssl/x509.h:99 openresty#2 ngx_http_lua_ffi_ssl_verify_client (r=<optimized out>, client_certs=<optimized out>, trusted_certs=0xffffffff, depth=<optimized out>, err=0x0) at /home/jiahao/work/org/lua-nginx-module/src/ngx_http_lua_ssl_certby.c:1588 ```

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编译错误 #1

编译错误 #1

randall05 commented Jun 25, 2010

chaoslawful commented Jun 25, 2010

chaoslawful commented Jun 25, 2010

randall05 commented Jun 25, 2010

编译错误 #1

编译错误 #1

Comments

randall05 commented Jun 25, 2010

chaoslawful commented Jun 25, 2010

chaoslawful commented Jun 25, 2010

randall05 commented Jun 25, 2010