Calling require() ON vita-luajit crashes Vita

[Rinnegatamante]

With LUA_LROOT set to app0:, trying to call a require crashes the app in symbol_lookup (dl.c)

Coredump:
https://pastebin.com/V615iLtj

[hyln9]

@Rinnegatamante Sorry for the late reply. I'll fix this while documenting proper usage of FFI and JIT on vita-luajit. Hopefully I'll have time to do this one month later.

[0x8080]

ETA on a fix for this?

[svennd]

@hyln9 sorry to bump this once more, if you don't have time is there another developer who might be able to fix this ? Thx for all your work !

[ramersonw]

@hyln9 "require" crashes even setting LUA_LROOT to another location, "ux0:data" for example.

[Rinnegatamante]

@hyln9 Rinnegatamante/lpp-vita#41

[bb010g]

Tossed lpp-vita's eboot_unsafe.bin.elf into Ghidra and chased down where the coredump occurred. The crash is at

vita-libdl/source/dl.c

Line 110 in bf46551

DLERR("Error: failed to acquire read lock\n");

, specifically

vita-libdl/source/dl.c

Line 21 in bf46551

snprintf(_dl_errmsg, DLERRMSG_LENGTH_MAX+1, __VA_ARGS__); \

, inside an inlined snprintf() as far as I can tell, on the first instruction of the unrolled (4x str.w store word) copy loop.

(Just going to post this for now and comment again once I manage to figure out why it's crashing there; the draft's been here half a day and I started this overall yesterday.)