[Bug 190751] New: [PATCH] devel/lua-alien: mark as SSP_UNSAFE
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bz-noreply at freebsd.org
Sat Jun 7 13:32:57 UTC 2014
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=190751
Bug ID: 190751
Summary: [PATCH] devel/lua-alien: mark as SSP_UNSAFE
Product: Ports Tree
Version: Latest
Hardware: Any
OS: Any
Status: Needs Triage
Severity: Affects Only Me
Priority: ---
Component: Individual Port(s)
Assignee: freebsd-ports-bugs at FreeBSD.org
Reporter: sjyj+wok at sharklasers.com
Created attachment 143489
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=143489&action=edit
fix
Lua interpreter aborts with exit code 1 shortly after the first
foreign function if using alien built with Clang.
The following snippet successfully calls sleep(3) but aborts shortly after:
require 'alien'
local libc = alien.default
libc.sleep:types('int', 'int')
print "foo"
libc.sleep(3)
print "bar"
With clang -O0 a crash can be seen instead:
(gdb) r
Starting program: /usr/local/bin/lua52 test.lua
[New LWP 101132]
[New Thread 801c06400 (LWP 101132)]
foo
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 801c06400 (LWP 101132)]
0x0000000000407421 in lua_pushnumber (L=0x800000000, n=0) at lapi.c:475
475 setnvalue(L->top, n);
(gdb) bt
#0 0x0000000000407421 in lua_pushnumber (L=0x800000000, n=0) at lapi.c:475
#1 0x00000008014e84aa in ?? () from /usr/local/lib/lua/5.2/alien_c.so
#2 0x000000000040bf66 in luaD_precall (L=0x801c17300, func=0x801c8d570,
nresults=0) at ldo.c:319
#3 0x000000000040c1d0 in luaD_precall (L=0x801c17300, func=0x801c8d570,
nresults=0) at ldo.c:356
#4 0x000000000041f64f in luaV_execute (L=0x801c17300) at lvm.c:709
#5 0x000000000040c779 in luaD_call (L=0x801c17300, func=0x801c200d0,
nResults=-1, allowyield=0) at ldo.c:402
#6 0x0000000000408bd4 in f_call (L=0x801c17300, ud=0x7fffffffe080) at
lapi.c:923
#7 0x000000000040b78f in luaD_rawrunprotected (L=0x801c17300, f=0x408ba0
<f_call>, ud=0x7fffffffe080) at ldo.c:131
#8 0x000000000040cf19 in luaD_pcall (L=0x801c17300, func=0x408ba0 <f_call>,
u=0x7fffffffe080, old_top=80, ef=64) at ldo.c:603
#9 0x0000000000408a90 in lua_pcallk (L=0x801c17300, nargs=0, nresults=-1,
errfunc=3, ctx=0, k=0x0) at lapi.c:949
#10 0x0000000000405694 in docall (L=0x801c17300, narg=0, nres=-1) at
lua.c:179
#11 0x00000000004053b5 in handle_script (L=0x801c17300, argv=0x7fffffffe4a0,
n=1) at lua.c:337
#12 0x0000000000404a9c in pmain (L=0x801c17300) at lua.c:465
#13 0x000000000040bf66 in luaD_precall (L=0x801c17300, func=0x801c20090,
nresults=1) at ldo.c:319
#14 0x000000000040c765 in luaD_call (L=0x801c17300, func=0x801c20090,
nResults=1, allowyield=0) at ldo.c:401
#15 0x0000000000408bd4 in f_call (L=0x801c17300, ud=0x7fffffffe3d0) at
lapi.c:923
#16 0x000000000040b78f in luaD_rawrunprotected (L=0x801c17300, f=0x408ba0
<f_call>, ud=0x7fffffffe3d0) at ldo.c:131
#17 0x000000000040cf19 in luaD_pcall (L=0x801c17300, func=0x408ba0 <f_call>,
u=0x7fffffffe3d0, old_top=16, ef=0) at ldo.c:603
#18 0x0000000000408a90 in lua_pcallk (L=0x801c17300, nargs=2, nresults=1,
errfunc=0, ctx=0, k=0x0) at lapi.c:949
#19 0x00000000004047a2 in main (argc=2, argv=0x7fffffffe4a0) at lua.c:491
The workaround is to build with GCC, otherwise use the attached patch.
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