BUG/MINOR: hlua: prevent LJMP in hlua_traceback()
Function is often used on error paths where no precaution is taken
against LJMP. Since the function is used on error paths (which include
out-of-memory error paths) the function lua_getinfo() could also raise
a memory exception, causing the process to crash or improper error
handling if the caller isn't prepared against that eventually. Since the
function is only used on rare events (error handling) and is lacking the
__LJMP prototype pefix, let's make it safe by protecting the lua_getinfo()
call so that hlua_traceback() callers may use it safely now (the function
will always succeed, output will be truncated in case of error).
This could be backported to all stable versions.
(cherry picked from commit 365ee28510a11993176ffd22704676732c051a4f)
Signed-off-by: Amaury Denoyelle <adenoyelle@haproxy.com>
(cherry picked from commit 342d239c7dd482cd319850421b32fcf161c26824)
Signed-off-by: Amaury Denoyelle <adenoyelle@haproxy.com>
(cherry picked from commit ae226e55c397794f041d72e481984c5ae7a50bec)
Signed-off-by: Amaury Denoyelle <adenoyelle@haproxy.com>
1 file changed