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BUG/MINOR: hlua: add check for lua_newstate

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Calling lual_newstate(Init main lua stack) in the hlua_init_state()
function, the return value of lua_newstate() may be NULL (for example
in case of OOM). In this case, L will be NULL, and then crash happens
in lua_getextraspace(). So, we add a check for lua_newstate.

This should be backported at least to 2.4, maybe further.
This commit is contained in:
firexinghe 2023-07-13 11:03:34 +08:00 committed by Willy Tarreau
parent c0456f45c8
commit bfff46f411
1 changed files with 7 additions and 0 deletions
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7
src/hlua.c
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@ -13120,6 +13120,13 @@ lua_State *hlua_init_state(int thread_num)
/* Init main lua stack. */
L = lua_newstate(hlua_alloc, &hlua_global_allocator);
if (!L) {
fprintf(stderr,
"Lua init: critical error: lua_newstate() returned NULL."
" This may possibly be caused by a memory allocation error.\n");
exit(1);
}
/* Initialise Lua context to NULL */
context = lua_getextraspace(L);
*context = NULL;