* [Bug 202213] New: bluez trunk tests fail with GCC 9 (or with -fsanitize=address with GCC 9)
@ 2019-01-10 13:45 bugzilla-daemon
2019-01-10 16:05 ` [Bug 202213] " bugzilla-daemon
` (10 more replies)
0 siblings, 11 replies; 12+ messages in thread
From: bugzilla-daemon @ 2019-01-10 13:45 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=202213
Bug ID: 202213
Summary: bluez trunk tests fail with GCC 9 (or with
-fsanitize=address with GCC 9)
Product: Drivers
Version: 2.5
Kernel Version: master
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Bluetooth
Assignee: linux-bluetooth@vger.kernel.org
Reporter: mliska@suse.cz
Regression: No
As of GCC r259641 there are new sanitizer errors:
$ export CFLAGS='-fsanitize=address -g'
$ make && make test
...
./unit/test-sdp
bluetoothd[24441]: Bluetooth daemon 5.50
/TP/SERVER/SS/BV-01-C/UUID-16 - init
/TP/SERVER/SS/BV-01-C/UUID-16 - setup
/TP/SERVER/SS/BV-01-C/UUID-16 - setup complete
/TP/SERVER/SS/BV-01-C/UUID-16 - run
=================================================================
==24441==ERROR: AddressSanitizer: stack-use-after-scope on address
0x7fffffff1a20 at pc 0x7ffff73fbbd8 bp 0x7fffffff1250 sp 0x7fffffff0a00
READ of size 13 at 0x7fffffff1a20 thread T0
#0 0x7ffff73fbbd7 in __interceptor_memcpy
/home/marxin/Programming/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:790
#1 0x404431 in send_pdu unit/test-sdp.c:204
#2 0x7ffff7ed8626 (/usr/lib64/libglib-2.0.so.0+0x4d626)
#3 0x7ffff7edbc14 in g_main_context_dispatch
(/usr/lib64/libglib-2.0.so.0+0x50c14)
#4 0x7ffff7edbfd7 (/usr/lib64/libglib-2.0.so.0+0x50fd7)
#5 0x7ffff7edc2d1 in g_main_loop_run (/usr/lib64/libglib-2.0.so.0+0x512d1)
#6 0x4a2783 in mainloop_run src/shared/mainloop-glib.c:79
#7 0x4a31ee in mainloop_run_with_signal src/shared/mainloop-notify.c:201
#8 0x4a180a in tester_run src/shared/tester.c:870
#9 0x461163 in main unit/test-sdp.c:2834
#10 0x7ffff7018fea in __libc_start_main ../csu/libc-start.c:308
#11 0x4039a9 in _start
(/home/marxin/Programming/bluez/unit/test-sdp+0x4039a9)
Address 0x7fffffff1a20 is located in stack of thread T0 at offset 1392 in frame
#0 0x40876c in main unit/test-sdp.c:779
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[39392, 39552) 'pdus' (line 1215)
[39616, 39776) 'pdus' (line 1235)
[39840, 40000) 'pdus' (line 1255)
[40064, 40224) 'pdus' (line 1275)
[40288, 40448) 'pdus' (line 1297)
[40512, 40672) 'pdus' (line 1319)
[40736, 40896) 'pdus' (line 1338)
[40960, 41120) 'pdus' (line 1371)
[41184, 41344) 'pdus' (line 1388)
[41408, 41568) 'pdus' (line 1865)
[41632, 41792) 'pdus' (line 1880)
[41856, 42016) 'pdus' (line 1895)
[42080, 42240) 'pdus' (line 1920)
[42304, 42464) 'pdus' (line 1935)
[42528, 42688) 'pdus' (line 1950)
[42752, 42912) 'pdus' (line 1975)
[42976, 43136) 'pdus' (line 1989)
[43200, 43360) 'pdus' (line 2003)
[43424, 43648) 'pdus' (line 1136)
[43712, 43936) 'pdus' (line 1163)
[44000, 44224) 'pdus' (line 1189)
[44288, 44512) 'pdus' (line 1518)
[44576, 44800) 'pdus' (line 1534)
[44864, 45088) 'pdus' (line 1550)
[45152, 45376) 'pdus' (line 2620)
[45440, 45664) 'pdus' (line 2657)
[45728, 45952) 'pdus' (line 2694)
[46016, 46240) 'pdus' (line 2817)
[46304, 46592) 'pdus' (line 946)
[46656, 47968) 'pdus' (line 2241)
[48096, 49408) 'pdus' (line 2363)
[49536, 50848) 'pdus' (line 2485)
HINT: this may be a false positive if your program uses some custom stack
unwind mechanism, swapcontext or vfork
(longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-use-after-scope
/home/marxin/Programming/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:790
in __interceptor_memcpy
Shadow bytes around the buggy address:
0x10007fff62f0: f8 f2 f2 f2 f8 f2 f2 f2 f8 f2 00 00 00 f2 00 00
0x10007fff6300: f8 f8 00 00 f8 f8 00 00 f8 f8 00 00 f8 f8 00 00
0x10007fff6310: f8 f8 00 00 f8 f8 00 00 f8 f8 00 00 f8 f8 00 00
0x10007fff6320: f8 f8 00 00 f8 f8 00 00 f8 f8 00 00 f8 f8 00 00
0x10007fff6330: f8 f8 00 00 f8 f8 00 00 f8 f8 00 00 f8 f8 00 00
=>0x10007fff6340: f8 f8 00 00[f8]f8 00 00 f8 f8 00 00 f8 f8 00 00
0x10007fff6350: f8 f8 00 00 f8 f8 00 00 f8 f8 00 00 f8 f8 00 00
0x10007fff6360: f8 f8 00 00 f8 f8 00 00 f8 f8 00 00 f8 f8 00 00
0x10007fff6370: f8 f8 00 00 f8 f8 00 00 f8 f8 00 00 f8 f8 00 00
0x10007fff6380: f8 f8 00 00 f8 f8 00 00 f8 f8 00 00 f8 f8 00 00
0x10007fff6390: f8 f8 00 00 f8 f8 00 00 f8 f8 00 00 f8 f8 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
Shadow gap: cc
==24441==ABORTING
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2019-01-10 13:45 [Bug 202213] New: bluez trunk tests fail with GCC 9 (or with -fsanitize=address with GCC 9) bugzilla-daemon
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From: bugzilla-daemon @ 2019-01-10 16:05 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=202213
Luiz Von Dentz (luiz.dentz@gmail.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |luiz.dentz@gmail.com
--- Comment #1 from Luiz Von Dentz (luiz.dentz@gmail.com) ---
Can you try again after applying the following patch:
https://gist.github.com/Vudentz/eb85c3a3d02b2a9bef74d9d6a110561d
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From: bugzilla-daemon @ 2019-01-10 18:57 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=202213
Stefan Seyfried (stefan.seyfried@googlemail.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |stefan.seyfried@googlemail.
| |com
--- Comment #2 from Stefan Seyfried (stefan.seyfried@googlemail.com) ---
I'm trying the patch right now.
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To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=202213
--- Comment #3 from Stefan Seyfried (stefan.seyfried@googlemail.com) ---
I needed to massage the patch a bit to apply on bluez 5.50
http://paste.opensuse.org/63512977 this is the patch I used.
Builds and works with gcc8, could not really test with gcc9 due to OBS
shortcomings but will submit to openSUSE Factory, so it will get to the gcc9
staging area, too.
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To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=202213
--- Comment #4 from Stefan Seyfried (stefan.seyfried@googlemail.com) ---
With gcc9 (finally found a way to use it in OBS :-), it asserts:
abuild@strolchi:~/rpmbuild/BUILD/bluez-5.50> cat unit/test-sdp.log
bluetoothd[3066]: Bluetooth daemon 5.50
len: 7 raw_size: 14 cont_len: 0
**
ERROR:unit/test-sdp.c:258:client_handler: assertion failed: ((size_t) len ==
rsp_pdu->raw_size + rsp_pdu->cont_len)
FAIL unit/test-sdp (exit status: 134)
I added a printf before the assert (and shifted it down one line)
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From: bugzilla-daemon @ 2019-01-11 9:49 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=202213
--- Comment #5 from Martin Liška (mliska@suse.cz) ---
(In reply to Stefan Seyfried from comment #4)
> With gcc9 (finally found a way to use it in OBS :-), it asserts:
>
> abuild@strolchi:~/rpmbuild/BUILD/bluez-5.50> cat unit/test-sdp.log
> bluetoothd[3066]: Bluetooth daemon 5.50
> len: 7 raw_size: 14 cont_len: 0
> **
> ERROR:unit/test-sdp.c:258:client_handler: assertion failed: ((size_t) len ==
> rsp_pdu->raw_size + rsp_pdu->cont_len)
> FAIL unit/test-sdp (exit status: 134)
>
> I added a printf before the assert (and shifted it down one line)
The patch does not fix the root problem.
#define define_test(name, _mtu, args...) \
do { \
const struct sdp_pdu pdus[] = { \
args, { } \
}; \
static struct test_data data; \
data.mtu = _mtu; \
data.pdu_list = g_memdup(pdus, sizeof(pdus)); \
tester_add(name, &data, NULL, test_sdp, NULL); \
} while (0)
here you copy pdus, but you should also memdup .raw_data, otherwise
it will reach it's end of scope.
Slightly reduced test-case that illustrates that:
$ cat test-sdp.i
struct a {
void *b;
long c
};
enum { d = 5 } typedef *e;
e g_malloc0_n();
typedef enum { f, g } h;
*g_io_channel_unix_new();
e g_memdup();
struct i {
_Bool j;
void *k;
long l
};
struct m {
struct i *n
};
struct context {
int o;
int fd;
struct m *data
};
int q;
struct i r;
struct a s[];
t(e u) {
struct context *context = u;
r = context->data->n[q];
s[0].b = r.k;
s[0].c = r.l;
writev(context->fd, s, 2);
return 0;
}
v(int channel, h cond, e u) {
struct context *context = u;
g_source_remove(context->o);
g_free(u);
tester_test_passed();
}
int *w;
int aa[];
*x(data) {
struct context *context = g_malloc0_n(1, sizeof(struct context));
socketpair(1, d, 0, aa);
w = g_io_channel_unix_new(aa[0]);
context->o = g_io_add_watch(w, g, v, context);
context->fd = aa[1];
context->data = data;
}
y() {
struct context *context = x();
g_idle_add(t, context);
}
z;
main() {
tester_init(z);
{
struct i ab[] = {.1, (char[]){4, 11, 0, 1}, sizeof(0)};
static struct m data;
data.n = g_memdup(ab, sizeof(ab));
tester_add("", &data, 0, y);
}
tester_run();
}
$ ./test
- init
- setup
- setup complete
- run
=================================================================
==29724==ERROR: AddressSanitizer: stack-use-after-scope on address
0x7fffffffdc00 at pc 0x7ffff744c678 bp 0x7fffffffd9e0 sp 0x7fffffffd190
READ of size 4 at 0x7fffffffdc00 thread T0
#0 0x7ffff744c677 in read_iovec
/home/marxin/Programming/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:956
#1 0x7ffff744cded in __interceptor_writev
/home/marxin/Programming/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:1150
#2 0x408160 in t
/home/marxin/BIG/osc/Base:System/bluez/bluez-5.50/xxx/test-sdp.i:31
#3 0x7ffff7ed8626 (/usr/lib64/libglib-2.0.so.0+0x4d626)
#4 0x7ffff7edbc14 in g_main_context_dispatch
(/usr/lib64/libglib-2.0.so.0+0x50c14)
#5 0x7ffff7edbfd7 (/usr/lib64/libglib-2.0.so.0+0x50fd7)
#6 0x7ffff7edc2d1 in g_main_loop_run (/usr/lib64/libglib-2.0.so.0+0x512d1)
#7 0x41ad10 in tester_run src/shared/tester.c:830
#8 0x408603 in main
/home/marxin/BIG/osc/Base:System/bluez/bluez-5.50/xxx/test-sdp.i:63
#9 0x7ffff7018fea in __libc_start_main ../csu/libc-start.c:308
#10 0x403789 in _start
(/home/marxin/BIG/osc/Base:System/bluez/bluez-5.50/xxx/test+0x403789)
Address 0x7fffffffdc00 is located in stack of thread T0 at offset 48 in frame
#0 0x408394 in main
/home/marxin/BIG/osc/Base:System/bluez/bluez-5.50/xxx/test-sdp.i:55
This frame has 2 object(s):
[48, 52) '<unknown>' <== Memory access at offset 48 is inside this variable
[64, 88) 'ab' (line 58)
HINT: this may be a false positive if your program uses some custom stack
unwind mechanism, swapcontext or vfork
(longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-use-after-scope
/home/marxin/Programming/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:956
in read_iovec
Shadow bytes around the buggy address:
0x10007fff7b30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7b40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7b50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7b60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7b70: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 f1 f1
=>0x10007fff7b80:[f8]f2 f8 f8 f8 f3 f3 f3 f3 f3 00 00 00 00 00 00
0x10007fff7b90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7ba0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7bb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7bc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7bd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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2019-01-10 13:45 [Bug 202213] New: bluez trunk tests fail with GCC 9 (or with -fsanitize=address with GCC 9) bugzilla-daemon
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From: bugzilla-daemon @ 2019-01-11 12:01 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=202213
--- Comment #6 from Luiz Von Dentz (luiz.dentz@gmail.com) ---
So something like the following is required:
@@ -59,7 +60,7 @@ struct test_data {
#define raw_pdu(args...) \
{ \
.valid = true, \
- .raw_data = raw_data(args), \
+ .raw_data = g_memdup(raw_data(args), sizeof(raw_data(args))),
\
.raw_size = sizeof(raw_data(args)), \
}
Most test actually build packets like that so I guess all of them are affected,
is there any particular reason why this behavior has changed in GCC 9?
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From: bugzilla-daemon @ 2019-01-11 13:07 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=202213
--- Comment #7 from Martin Liška (mliska@suse.cz) ---
The test works for me with:
diff --git a/unit/test-sdp.c b/unit/test-sdp.c
index 5a50cbbf1..ebe00571d 100644
--- a/unit/test-sdp.c
+++ b/unit/test-sdp.c
@@ -59,14 +59,14 @@ struct test_data {
#define raw_pdu(args...) \
{ \
.valid = true, \
- .raw_data = raw_data(args), \
+ .raw_data = g_memdup(raw_data(args), sizeof(raw_data(args))), \
.raw_size = sizeof(raw_data(args)), \
}
#define raw_pdu_cont(cont, args...) \
{ \
.valid = true, \
- .raw_data = raw_data(args), \
+ .raw_data = g_memdup(raw_data(args), sizeof(raw_data(args))), \
.raw_size = sizeof(raw_data(args)), \
.cont_len = cont, \
}
@@ -104,7 +104,7 @@ struct test_data_de {
#define define_test_de_attr(name, input, exp) \
do { \
static struct test_data_de data; \
- data.input_data = input; \
+ data.input_data = g_memdup(input, sizeof (input));
\
data.input_size = sizeof(input); \
data.expected = exp; \
tester_add("/sdp/DE/ATTR/" name, &data, NULL, \
thanks for help.
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From: bugzilla-daemon @ 2019-01-11 13:09 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=202213
--- Comment #8 from Martin Liška (mliska@suse.cz) ---
But similar happens in following failing tests with -fsanitize=address:
FAIL: unit/test-avdtp
FAIL: unit/test-avctp
FAIL: unit/test-avrcp
FAIL: unit/test-hfp
FAIL: unit/test-gatt
FAIL: unit/test-hog
can you please prepare a patch where you'll factor out macros like
#define raw_pdu(args...) into a header file?
Thanks.
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From: bugzilla-daemon @ 2019-01-11 13:31 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=202213
--- Comment #9 from Luiz Von Dentz (luiz.dentz@gmail.com) ---
(In reply to Martin Liška from comment #8)
> But similar happens in following failing tests with -fsanitize=address:
>
> FAIL: unit/test-avdtp
> FAIL: unit/test-avctp
> FAIL: unit/test-avrcp
> FAIL: unit/test-hfp
> FAIL: unit/test-gatt
> FAIL: unit/test-hog
>
> can you please prepare a patch where you'll factor out macros like
> #define raw_pdu(args...) into a header file?
>
> Thanks.
Im fixing that, though it is not possible to have it in a common header because
the PDUs are different in each case.
Btw, does define_test_de_attr really needs to be changed? There is no
intermediate variable like in define_test so the variable should not go out of
scope since it is static.
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From: bugzilla-daemon @ 2019-01-11 13:53 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=202213
--- Comment #10 from Martin Liška (mliska@suse.cz) ---
Yes, it's problematic, please see explanation:
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg00629.html
and there's a reduced example:
$ cat /tmp/x.c
struct test_data_de {
const void *input_data;
int input_size;
};
int main()
{
struct test_data_de *ptr;
{
static struct test_data_de data;
data.input_size = sizeof((const unsigned char[]) { 0x25, 0x00 });
data.input_data = ((const unsigned char[]) { 0x25, 0x00 });
ptr = &data;
}
*(char*)ptr->input_data = 'x';
return 0;
}
$ gcc /tmp/x.c -fsanitize=address && ./a.out
=================================================================
==17535==ERROR: AddressSanitizer: stack-use-after-scope on address
0x7fffffffdc20 at pc 0x0000004012d9 bp 0x7fffffffdbe0 sp 0x7fffffffdbd8
WRITE of size 1 at 0x7fffffffdc20 thread T0
#0 0x4012d8 in main (/home/marxin/Programming/bluez/a.out+0x4012d8)
#1 0x7ffff7018fea in __libc_start_main ../csu/libc-start.c:308
#2 0x4010c9 in _start (/home/marxin/Programming/bluez/a.out+0x4010c9)
Address 0x7fffffffdc20 is located in stack of thread T0 at offset 32 in frame
#0 0x401181 in main (/home/marxin/Programming/bluez/a.out+0x401181)
This frame has 1 object(s):
[32, 34) '<unknown>' <== Memory access at offset 32 is inside this variable
HINT: this may be a false positive if your program uses some custom stack
unwind mechanism, swapcontext or vfork
(longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-use-after-scope
(/home/marxin/Programming/bluez/a.out+0x4012d8) in main
Shadow bytes around the buggy address:
0x10007fff7b30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7b40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7b50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7b60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7b70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x10007fff7b80: f1 f1 f1 f1[f8]f3 f3 f3 00 00 00 00 00 00 00 00
0x10007fff7b90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7ba0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7bb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7bc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7bd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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2019-01-10 13:45 [Bug 202213] New: bluez trunk tests fail with GCC 9 (or with -fsanitize=address with GCC 9) bugzilla-daemon
` (9 preceding siblings ...)
2019-01-11 13:53 ` bugzilla-daemon
@ 2019-01-11 16:36 ` bugzilla-daemon
10 siblings, 0 replies; 12+ messages in thread
From: bugzilla-daemon @ 2019-01-11 16:36 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=202213
--- Comment #11 from Luiz Von Dentz (luiz.dentz@gmail.com) ---
Ive sent the patches to the mailing list.
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