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BUG/MEDIUM: lua-thread: some parts must be initialized once

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Lua dedicated TCP, HTTP and SSL socket and proxies must be initialized
once. Right now, they are initialized from the Lua init state, but since
commit 59f11be43 ("MEDIUM: lua-thread: Add the lua-load-per-thread
directive") this function is called one time per lua context. This
caused some fields to be cleared and overwritten, and pre-allocated
object to be lost. This is why the address sanitizer detected memory
leaks from the socket_ssl server initialization.

Let's move all the state-independent part of the function to the
hlua_init() function to avoid this.

No backport is needed, this is only 2.4-dev.
This commit is contained in:
Thierry Fournier 2020-12-04 11:47:47 +01:00 committed by Willy Tarreau
parent 51058d64a6
commit aafc777854
1 changed files with 34 additions and 32 deletions
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66
src/hlua.c
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@ -8675,17 +8675,6 @@ lua_State *hlua_init_state(int thread_num)
void **context;
lua_State *L;
struct prepend_path *pp;
#ifdef USE_OPENSSL
struct srv_kw *kw;
int tmp_error;
char *error;
char *args[] = { /* SSL client configuration. */
"ssl",
"verify",
"none",
NULL
};
#endif
/* Init main lua stack. */
L = lua_newstate(hlua_alloc, &hlua_global_allocator);
@ -9136,6 +9125,40 @@ lua_State *hlua_init_state(int thread_num)
/* Register previous table in the registry with reference and named entry. */
class_socket_ref = hlua_register_metatable(L, CLASS_SOCKET);
lua_atpanic(L, hlua_panic_safe);
return L;
}
void hlua_init(void) {
int i;
int idx;
#ifdef USE_OPENSSL
struct srv_kw *kw;
int tmp_error;
char *error;
char *args[] = { /* SSL client configuration. */
"ssl",
"verify",
"none",
NULL
};
#endif
/* Init post init function list head */
for (i = 0; i < MAX_THREADS + 1; i++)
LIST_INIT(&hlua_init_functions[i]);
/* Init state for common/shared lua parts */
hlua_state_id = 0;
ha_set_tid(0);
hlua_states[0] = hlua_init_state(0);
/* Init state 1 for thread 0. We have at least one thread. */
hlua_state_id = 1;
ha_set_tid(0);
hlua_states[1] = hlua_init_state(1);
/* Proxy and server configuration initialisation. */
memset(&socket_proxy, 0, sizeof(socket_proxy));
init_new_proxy(&socket_proxy);
@ -9260,27 +9283,6 @@ lua_State *hlua_init_state(int thread_num)
}
#endif
lua_atpanic(L, hlua_panic_safe);
return L;
}
void hlua_init(void) {
int i;
/* Init post init function list head */
for (i = 0; i < MAX_THREADS + 1; i++)
LIST_INIT(&hlua_init_functions[i]);
/* Init state for common/shared lua parts */
hlua_state_id = 0;
ha_set_tid(0);
hlua_states[0] = hlua_init_state(0);
/* Init state 1 for thread 0. We have at least one thread. */
hlua_state_id = 1;
ha_set_tid(0);
hlua_states[1] = hlua_init_state(1);
}
static void hlua_deinit()