[PATCH v1 1/1] box: fix crash in ncurses on fedora 28

[Kirill Shcherbatov <kshcherbatov@tarantool.org>]

Tarantool has been crashing when trying to go into an
interactive loop in ncurses-libs/libtinfo library via
lbox_console_readline. This SIGABORT caused by stack
probing code that present in new ncurses distributions.

  lea r11,[rsp-frameSize]
label:
  sub rsp,pageSize
  or QWORD PTR [rsp],0x0
  cmp rsp,r11
  jne label

Where frameSize is 0x8000 and pageSize is 0x1000 for
version we've dedugged.
Code above tests marker value on pages start.
0x8000 frameSize is a precompiled ncurse's binary
internal value.
This third-party library is called by tarantool
fiber that have fiber stack of size 2*0x8000.
To the moment of crash, stack memory distributed:
ncurses   stack usage 0x91A8  bytes
total     stack usage 0x9488  bytes

We have to increase interactive console main loop
fiber stack to work with third-party libraries normally.

Closes #3418.
---
Branch: https://github.com/tarantool/tarantool/tree/kshch/gh-3418-crash-on-fedora
Issue: https://github.com/tarantool/tarantool/issues/3418

 src/lua/init.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/lua/init.c b/src/lua/init.c
index a0a7f63..217640f 100644
--- a/src/lua/init.c
+++ b/src/lua/init.c
@@ -610,8 +610,10 @@ tarantool_lua_run_script(char *path, bool interactive,
 	 * To work this problem around we must run init script in
 	 * a separate fiber.
 	 */
-
-	script_fiber = fiber_new(title, run_script_f);
+	struct fiber_attr fiber_attr =
+		{.stack_size = 0x8000 * 4,
+		 .flags = FIBER_DEFAULT_FLAGS | FIBER_CUSTOM_STACK};
+	script_fiber = fiber_new_ex(title, &fiber_attr, run_script_f);
 	if (script_fiber == NULL)
 		panic("%s", diag_last_error(diag_get())->errmsg);
 	fiber_start(script_fiber, tarantool_L, path, interactive,
-- 
2.7.4