BUG/MINOR: hlua: fix missing lock in hlua_filter_delete()

hlua_filter_delete() calls hlua_unref() on the stream hlua stack, but
we should own the lock prior to manipulating the stack.

This should be backported up to 2.6.

diff --git a/src/hlua.c b/src/hlua.c
index 4dfee0e..7f1dfed 100644 (file)
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -12037,7 +12037,9 @@ static void hlua_filter_delete(struct stream *s, struct filter *filter)
 {
        struct hlua_flt_ctx *flt_ctx = filter->ctx;
 
+       hlua_lock(s->hlua);
        hlua_unref(s->hlua->T, flt_ctx->ref);
+       hlua_unlock(s->hlua);
        hlua_ctx_destroy(flt_ctx->hlua[0]);
        hlua_ctx_destroy(flt_ctx->hlua[1]);
        pool_free(pool_head_hlua_flt_ctx, flt_ctx);