<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">Hi All,<br>
<br>
I've filed a bug for this issue.<br>
<a class="moz-txt-link-freetext" href="https://bugzilla.yoctoproject.org/show_bug.cgi?id=13123">https://bugzilla.yoctoproject.org/show_bug.cgi?id=13123</a><br>
<br>
I could spend time to work on it, but I really don't know how to
start.<br>
Hope some experts could help or give me some advice.<br>
<br>
Best Regards,<br>
Chen Qi<br>
<br>
On 12/29/2018 11:26 AM, ChenQi wrote:<br>
</div>
<blockquote
cite="mid:90c78052-ac1a-cf6c-f252-28a074e029e3@windriver.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<div class="moz-cite-prefix">On 12/29/2018 01:09 AM, Khem Raj
wrote:<br>
</div>
<blockquote
cite="mid:ab613fa4-f4b8-9415-bedf-e2a2b6a52101@gmail.com"
type="cite"> <br>
<br>
On 12/28/18 8:31 AM, <a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:richard.purdie@linuxfoundation.org">richard.purdie@linuxfoundation.org</a>
wrote: <br>
<blockquote type="cite">On Fri, 2018-12-28 at 17:49 +0800,
ChenQi wrote: <br>
<blockquote type="cite">On 12/26/2018 07:06 PM, <a
moz-do-not-send="true" class="moz-txt-link-abbreviated"
href="mailto:richard.purdie@linuxfoundation.org">richard.purdie@linuxfoundation.org</a>
wrote: <br>
<blockquote type="cite">On Wed, 2018-12-26 at 10:09 +0800,
ChenQi wrote: <br>
<blockquote type="cite">Hi All, <br>
<br>
'oe-selftest -r
package.PackageTests.test_gdb_hardlink_debug' <br>
fails. <br>
I did the tests on both my Fedora27 and ubuntu16.04
servers. They <br>
both <br>
failed. <br>
I can also reproduce this issue manually. <br>
<br>
I did some investigation. No clue how to fix this it. So
I want <br>
to seek <br>
help from community. <br>
<br>
Below is some output from oe-selftest. <br>
[snip] <br>
2018-12-26 09:27:58,440 - oe-selftest - INFO - <br>
test_gdb_hardlink_debug <br>
(package.PackageTests) <br>
2018-12-26 09:37:55,333 - oe-selftest - INFO - gdbtest <br>
/usr/bin/hello1 <br>
2018-12-26 09:37:59,904 - oe-selftest - ERROR - GDB
result: <br>
1: Reading symbols from /usr/bin/hello1...Reading
symbols from <br>
/usr/bin/.debug/hello4...done. <br>
done. <br>
(gdb) Breakpoint 1 at 0x1060: file
/usr/include/bits/stdio2.h, <br>
line 107. <br>
(gdb) Starting program: /usr/bin/hello1 <br>
<br>
Breakpoint 1, main () at /usr/include/bits/stdio2.h:107
<br>
107 /usr/include/bits/stdio2.h: No such file or
directory. <br>
(gdb) Continuing. <br>
Hello World! <br>
[Inferior 1 (process 312) exited normally] <br>
(gdb) <br>
2018-12-26 09:38:00,907 - oe-selftest - INFO - ... FAIL
<br>
[snip] <br>
<br>
The hello world problem is as follows. <br>
$ cat <br>
meta-selftest/recipes-test/selftest-hardlink/selftest- <br>
hardlink/hello.c <br>
#include <stdio.h> <br>
<br>
int main() { <br>
printf("Hello World!\n"); <br>
} <br>
<br>
Some extra information: <br>
1. Remove '-O2' or '-D_FORTIFY_SOURCE=2', and it works
correctly. <br>
2. Adding some system call like daemon(0,0) before
printf also <br>
works. <br>
3. Reverting poky repo to <br>
1c048479af7cc98e30f9a33d1f3bef03711544aa, <br>
which adds this selftest case, does not work. It still
fails. <br>
4. Hongxu confirms that things work on his host. <br>
5. I also don't see failure about this test case on
yocto's <br>
autobuilder. <br>
<br>
Could somebody help to provide some suggestions? <br>
</blockquote>
<br>
This is strange and there must be some difference between
your <br>
configuration and what what we test on the autobuilder or
on <br>
Hongxu's <br>
setup. <br>
</blockquote>
Hi Richard, <br>
<br>
I have talked with Hongxu and we can now both confirm that
there does <br>
exist some problem. <br>
<br>
<blockquote type="cite">Which DISTRO and MACHINE are you
using? <br>
</blockquote>
DISTRO is poky <br>
MACHINE is qemux86. <br>
<br>
It seems that if MACHINE is qemux86-64, the test case could
pass. But <br>
that's just because the test case only checks 'Breakpoint 1,
main () <br>
at hello.c:4'. See the console output below. <br>
(gdb) b main <br>
Breakpoint 1 at 0x1050: file /usr/include/bits/stdio2.h,
line 107. <br>
(gdb) r <br>
Starting program: /usr/bin/hello1 <br>
<br>
Breakpoint 1, main () at hello.c:4 <br>
4 printf("Hello World!\n"); <br>
(gdb) c <br>
Continuing. <br>
Hello World! <br>
[Inferior 1 (process 156) exited normally] <br>
(gdb) q <br>
<br>
Even in this case, the 'b main' does not give correct
result. The <br>
test case passes because 'Breakpoint 1, main () at
hello.c:4' is <br>
there. <br>
<br>
On qemux86, we have: <br>
(gdb) Breakpoint 1 at 0x1060: file
/usr/include/bits/stdio2.h, line <br>
107. <br>
(gdb) Starting program: /usr/bin/hello1 <br>
<br>
Breakpoint 1, main () at /usr/include/bits/stdio2.h:107 <br>
107 /usr/include/bits/stdio2.h: No such file or
directory. <br>
(gdb) Continuing. <br>
Hello World! <br>
[Inferior 1 (process 156) exited normally] <br>
(gdb) <br>
<br>
<blockquote type="cite">I think the key to resolving this is
will be to understanding how <br>
to <br>
reproduce it... <br>
</blockquote>
Two ways to reproduce the problem: <br>
<br>
I) reproduce it via oe-selftest <br>
1) . oe-init-build-env build-selftest <br>
2) SANITY_TESTED_DISTROS = "" <br>
3) oe-selftest -r
package.PackageTests.test_gdb_hardlink_debug <br>
<br>
II) reproduce it manually <br>
1) add meta-selftest to bblayers.conf <br>
2) IMAGE_INSTALL_append = " selftest-hardlink
selftest-hardlink-dbg <br>
selftest-hardlink-gdb" <br>
3) bitbake core-image-minimal <br>
4) On target: <br>
gdb /usr/bin/hello1 <br>
(gdb) b main <br>
</blockquote>
<br>
I confirmed I could also reproduce it. We've just been lucky
with the <br>
configuration the autobuilder tests. <br>
<br>
I think we need to improve the test case. Does installing the
libc <br>
headers/dev package so that stdio2.h is there help? <br>
</blockquote>
<br>
This is not exported API so libc headers may not work but
installing libc dev package should help here. <br>
<br>
</blockquote>
<br>
Hi Richard and Khem,<br>
<br>
Unfortunately installing libc-dev package does not help.<br>
<br>
On qemux86:<br>
1: Reading symbols from /usr/bin/hello1...Reading symbols from
/usr/bin/.debug/hello4...done.<br>
done.<br>
<b>(gdb) Breakpoint 1 at 0x1060: file /usr/include/bits/stdio2.h,
line 107.</b><br>
(gdb) Starting program: /usr/bin/hello1 <br>
<br>
<b>Breakpoint 1, main () at /usr/include/bits/stdio2.h:107</b><b><br>
</b><b>107 return __printf_chk (__USE_FORTIFY_LEVEL - 1,
__fmt, __va_arg_pack ());</b><br>
(gdb) Continuing.<br>
Hello World!<br>
[Inferior 1 (process 309) exited normally]<br>
(gdb) <br>
2018-12-29 10:58:11,538 - oe-selftest - INFO - ... FAIL<br>
<br>
For qemux86-64, things are the same.<br>
<br>
Best Regards,<br>
Chen Qi<br>
<br>
<blockquote
cite="mid:ab613fa4-f4b8-9415-bedf-e2a2b6a52101@gmail.com"
type="cite">
<blockquote type="cite"> <br>
Cheers, <br>
<br>
Richard <br>
<br>
</blockquote>
<br>
</blockquote>
<p><br>
</p>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
</blockquote>
<p><br>
</p>
</body>
</html>