[Bug 1136432] Re: luaL_loadfile segfault in _IO_file_underflow

2013-07-25 Thread Mooky 
Hi, 
  I'm a committer of Lua Development Tools (an eclipse plug-in), and this bug 
affect us too.
  We integrate the Lua VM and have this kind of exception at launch :

Current thread (0xb6706c00):  JavaThread main [_thread_in_native,
id=2110, stack(0xb6837000,0xb6888000)]

siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR),
si_addr=0x0037

Stack: [0xb6837000,0xb6888000],  sp=0xb6882d40,  free space=303k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C  [libc.so.6+0x12ef98]  _IO_file_underflow+0x68
C  [liblua5.1.so+0x21c89]  luaopen_string+0xef9
C  [liblua5.1.so+0xa2ea]  lua_resume+0x36a
C  [liblua5.1.so+0xa784]  lua_resume+0x804
C  [liblua5.1.so+0x57b5]  lua_call+0x35
C  [liblua5.1.so+0x210aa]  luaopen_string+0x31a
C  [liblua5.1.so+0xa2ea]  lua_resume+0x36a
C  [liblua5.1.so+0x1545a]  lua_newstate+0x3f9a
C  [liblua5.1.so+0xa7d0]  lua_resume+0x850
C  [liblua5.1.so+0x5771]  lua_pushcclosure+0x1a1
C  [liblua5.1.so+0x9df3]  lua_yield+0x723
C  [liblua5.1.so+0x9e55]  lua_yield+0x785
C  [liblua5.1.so+0x5598]  lua_pcall+0x68
C  [libjnlua5.1.so+0xb085]  Java_com_naef_jnlua_LuaState_lua_1pcall+0x205
j  com.naef.jnlua.LuaState.lua_pcall(II)V+0
j  com.naef.jnlua.LuaState.call(II)V+7

We can reproduce it only, on 32bit version and with a JVM 1.7. It seems this 
does not happened on older version of ubuntu.
I precise we do not use the lua VM packaged in ubuntu repository.

(LDT issue :  https://bugs.eclipse.org/bugs/show_bug.cgi?id=413740)

** Bug watch added: Eclipse bugs #413740
   https://bugs.eclipse.org/bugs/show_bug.cgi?id=413740

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1136432

Title:
  luaL_loadfile segfault in _IO_file_underflow

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lua5.1/+bug/1136432/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 1136432] Re: luaL_loadfile segfault in _IO_file_underflow

2013-04-02 Thread Bolick 
Luckily I found out that this issue was caused by 1 special .so I had loaded 
automatically with LD_PRELOAD.
It was libusb-driver.so used by Xilinx Impact tool for communication with 
JTAG.
So with this library preloaded this simple test (built with gcc test.c) 
crashes on the second getc:
=
#include stdio.h
char * filename = luac.out;

int main (void)
{
FILE* f;
int c;

f = fopen(filename, r);
if (f == NULL) {
printf(Cannot open file %s\n, filename);
return -1;
}
printf(File %s opened successfully\n, filename);
c = getc(f);
printf(c: %x\n, c);

f = freopen(filename, rb, f);
if (f == NULL) {
printf(Cannot re-open file %s in binary mode\n, filename);
return -1;
}
printf(File %s re-opened in binary mode successfully\n, filename);
c = getc(f);
printf(c: %x\n, c);

if (filename)
fclose(f);
return 0;
}
=

If I disable library preload application gets executed without problems.
Moreover if I build this test statically everything will work as well.

So it is definitely not a problem in Lua.
Might be eglibc or dynamic linker.

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1136432

Title:
  luaL_loadfile segfault in _IO_file_underflow

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lua5.1/+bug/1136432/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 1136432] Re: luaL_loadfile segfault in _IO_file_underflow

2013-04-01 Thread Bolick 
I also may confirm this issue with lua.
I faced it trying to play a video from public web-cam.
===
$ gdb --args vlc http://83.64.164.6/mjpg/video.mjpg
GNU gdb (GDB) 7.5-ubuntu
Reading symbols from /usr/bin/vlc...Reading symbols from 
/usr/lib/debug/usr/bin/vlc...done.
done.
(gdb) run
Starting program: /usr/bin/vlc http://83.64.164.6/mjpg/video.mjpg
[Thread debugging using libthread_db enabled]
Using host libthread_db library /lib/i386-linux-gnu/libthread_db.so.1.
VLC media player 2.0.5 Twoflower (revision 2.0.5-0-g1661b7d)

Program received signal SIGSEGV, Segmentation fault.
0xb7b4425d in __GI___uflow (fp=0x80dc9c0) at genops.c:394
394 genops.c: No such file or directory.
(gdb) bt
#0  0xb7b4425d in __GI___uflow (fp=0x80dc9c0) at genops.c:394
#1  0xb7b3a772 in _IO_getc (fp=0x80dc9c0) at getc.c:41
#2  0xb4e4cd8c in luaL_loadfile (L=L@entry=0x81905a0, 
filename=filename@entry=0x81904e0 
/usr/lib/vlc/lua/meta/reader/filename.luac) at lauxlib.c:577
#3  0xb4e8c055 in run (p_this=p_this@entry=0x8188cc0, 
psz_filename=psz_filename@entry=0x81904e0 
/usr/lib/vlc/lua/meta/reader/filename.luac, 
L=L@entry=0x81905a0, luafunction=luafunction@entry=0xb4ea3f61 read_meta) 
at meta.c:100
#4  0xb4e8c2a0 in read_meta (p_this=p_this@entry=0x8188cc0, 
psz_filename=0x81904e0 /usr/lib/vlc/lua/meta/reader/filename.luac, 
user_data=user_data@entry=0x81c8dd8) at meta.c:192
#5  0xb4e8f689 in vlclua_scripts_batch_execute (p_this=p_this@entry=0x8188cc0, 
luadirname=luadirname@entry=0xb4ea3fa6 meta/reader, 
func=func@entry=0xb4e8c250 read_meta, 
user_data=0x81c8dd8) at vlc.c:317
#6  0xb4e8c506 in ReadMeta (p_this=0x8188cc0) at meta.c:227
#7  0xb7d2c6a0 in generic_start (func=0xb4e8c4d0 ReadMeta, ap=0xbfffe2c8 
\350\342\377\277, 
ap@entry=0xbfffe2c4 \300\214\030\b\350\342\377\277) at 
modules/modules.c:422
#8  0xb7d2cde3 in vlc_module_load (p_this=p_this@entry=0x8188cc0, 
psz_capability=psz_capability@entry=0xb7d7067f meta reader, 
psz_name=optimized out, 
psz_name@entry=0x0, b_strict=b_strict@entry=false, 
probe=probe@entry=0xb7d2c690 generic_start)
at modules/modules.c:347
#9  0xb7d2d302 in module_need (obj=obj@entry=0x8188cc0, 
cap=cap@entry=0xb7d7067f meta reader, 
name=name@entry=0x0, strict=strict@entry=false) at modules/modules.c:437
#10 0xb7ce679b in InputSourceMeta (p_input=p_input@entry=0x80d7188, 
p_meta=p_meta@entry=0x818c8d0, 
p_source=optimized out, p_source=optimized out) at input/input.c:2741
#11 0xb7ce9b5d in Init (p_input=p_input@entry=0x80d7188) at input/input.c:1315
#12 0xb7cedd5b in input_Read (p_parent=p_parent@entry=0x818af40, 
p_item=p_item@entry=0x81c8dd8)
at input/input.c:175
#13 0xb7cc6c05 in playlist_MLLoad (p_playlist=p_playlist@entry=0x818af40) at 
playlist/loadsave.c:171
#14 0xb7cc21a9 in playlist_Create (p_parent=p_parent@entry=0x804db78) at 
playlist/engine.c:271
#15 0xb7ca9fb5 in libvlc_InternalInit (p_libvlc=p_libvlc@entry=0x804db78, 
i_argc=4, 
ppsz_argv=ppsz_argv@entry=0xbfffe77c) at libvlc.c:557
#16 0xb7d9c1d8 in libvlc_new (argc=argc@entry=3, argv=argv@entry=0xbfffe7e4) at 
core.c:59
#17 0x08048f68 in main (i_argc=2, ppsz_argv=0xbfffea04) at vlc.c:217
===

So from this back-trace I made an assumption that lua falls in segfault 
processing /usr/lib/vlc/lua/meta/reader/filename.luac.
And indeed:
===
$ gdb --args lua /usr/lib/vlc/lua/meta/reader/filename.luac
GNU gdb (GDB) 7.5-ubuntu
Reading symbols from /usr/bin/lua...Reading symbols from 
/usr/lib/debug/.build-id/fc/b9cc5f5115c7a1dab4b5544c40751cb9ecdf4b.debug...done.
done.
(gdb) run
Starting program: /usr/bin/lua /usr/lib/vlc/lua/meta/reader/filename.luac
[Thread debugging using libthread_db enabled]
Using host libthread_db library /lib/i386-linux-gnu/libthread_db.so.1.

Program received signal SIGSEGV, Segmentation fault.
0xb7c1025d in __GI___uflow (fp=0x8078188) at genops.c:394
394 genops.c: No such file or directory.
(gdb) bt
#0  0xb7c1025d in __GI___uflow (fp=0x8078188) at genops.c:394
#1  0xb7c06772 in _IO_getc (fp=0x8078188) at getc.c:41
#2  0x0805a32c in luaL_loadfile (L=L@entry=0x8073278, 
filename=0xbfffec02 /usr/lib/vlc/lua/meta/reader/filename.luac) at 
lauxlib.c:577
#3  0x0804ba47 in handle_script (n=optimized out, argv=optimized out, 
L=optimized out)
at lua.c:247
#4  pmain (L=0x8073278) at lua.c:362
#5  0x0804f343 in luaD_precall (L=L@entry=0x8073278, func=optimized out, 
func@entry=0x80734ac, 
nresults=nresults@entry=0) at ldo.c:320
#6  0x0804f718 in luaD_call (L=L@entry=0x8073278, func=0x80734ac, 
nResults=nResults@entry=0)
at ldo.c:377
#7  0x0804bbb8 in f_Ccall (L=L@entry=0x8073278, ud=ud@entry=0xbfffe928) at 
lapi.c:846
#8  0x0804ea74 in luaD_rawrunprotected (L=L@entry=0x8073278, 
f=f@entry=0x804bb40 f_Ccall, 
ud=ud@entry=0xbfffe928) at ldo.c:116
#9  0x0804f8ff in luaD_pcall (L=L@entry=0x8073278, func=func@entry=0x804bb40 
f_Ccall, 
u=u@entry=0xbfffe928, old_top=12, ef=ef@entry=0) at

[Bug 1136432] Re: luaL_loadfile segfault in _IO_file_underflow

2013-04-01 Thread Bolick 
Snap-shot of filename.lua from VLC's git:
http://git.videolan.org/?p=vlc.git;a=blob_plain;f=share/lua/meta/reader/filename.lua;hb=HEAD

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1136432

Title:
  luaL_loadfile segfault in _IO_file_underflow

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lua5.1/+bug/1136432/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 1136432] Re: luaL_loadfile segfault in _IO_file_underflow

2013-04-01 Thread Bolick 
Confirm that only 32-bit machine is affected.
On 64-bit machine compiled script gets correctly executed.

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1136432

Title:
  luaL_loadfile segfault in _IO_file_underflow

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lua5.1/+bug/1136432/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 1136432] Re: luaL_loadfile segfault in _IO_file_underflow

2013-04-01 Thread Bolick 
As for Ubuntu-specific patches I don't agree.
Just got lua built from latest 5.2.2 sources from lua.org: 
http://www.lua.org/ftp/lua-5.2.2.tar.gz
and got the same behavior as with Ubuntu's binary packages:
==
$ gdb --args ./lua luac.out 
(gdb) run
Starting program: lua luac.out
[Thread debugging using libthread_db enabled]
Using host libthread_db library /lib/i386-linux-gnu/libthread_db.so.1.

Program received signal SIGSEGV, Segmentation fault.
0xb7c1025d in __GI___uflow (fp=0x807bd08) at genops.c:394
394 genops.c: No such file or directory.
(gdb) bt
#0  0xb7c1025d in __GI___uflow (fp=0x807bd08) at genops.c:394
#1  0xb7c06772 in _IO_getc (fp=0x807bd08) at getc.c:41
#2  0x0805aac3 in skipBOM ()
#3  0x0805c2df in luaL_loadfilex ()
#4  0x0804bf27 in pmain ()
#5  0x0804f9f3 in luaD_precall ()
#6  0x0804fc46 in luaD_call ()
#7  0x0804c218 in f_call ()
#8  0x0804f2b4 in luaD_rawrunprotected ()
#9  0x0804fe9d in luaD_pcall ()
#10 0x0804dac5 in lua_pcallk ()
#11 0x0804b091 in main ()
==

Once again on 64-bit machine everything works flawlessly.

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1136432

Title:
  luaL_loadfile segfault in _IO_file_underflow

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lua5.1/+bug/1136432/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 1136432] Re: luaL_loadfile segfault in _IO_file_underflow

2013-03-12 Thread Launchpad Bug Tracker 
Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: lua5.1 (Ubuntu)
   Status: New = Confirmed

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1136432

Title:
  luaL_loadfile segfault in _IO_file_underflow

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lua5.1/+bug/1136432/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 1136432] Re: luaL_loadfile segfault in _IO_file_underflow

2013-02-28 Thread Mark1-x 
My initial report was not entirely accurate.

If I use a Java6 JVM I do *not* see the problem, even on 32-bit Ubuntu.

So there is some interplay of Java7, LUA and 32-bit Ubuntu that triggers
the bug. I guess it is possible that this is a JVM bug, but the fact
remains that if I use a vanilla lua build rather than the Ubuntu lua
build my problem goes away, even on Java7.

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1136432

Title:
  luaL_loadfile segfault in _IO_file_underflow

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lua5.1/+bug/1136432/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs