On 12/28/18 8:31 AM, richard.pur...@linuxfoundation.org wrote:
On Fri, 2018-12-28 at 17:49 +0800, ChenQi wrote:
On 12/26/2018 07:06 PM, richard.pur...@linuxfoundation.org wrote:
On Wed, 2018-12-26 at 10:09 +0800, ChenQi wrote:
Hi All,
'oe-selftest -r package.PackageTests.test_gdb_hardlink_debug'
fails.
I did the tests on both my Fedora27 and ubuntu16.04 servers. They
both
failed.
I can also reproduce this issue manually.
I did some investigation. No clue how to fix this it. So I want
to seek
help from community.
Below is some output from oe-selftest.
[snip]
2018-12-26 09:27:58,440 - oe-selftest - INFO -
test_gdb_hardlink_debug
(package.PackageTests)
2018-12-26 09:37:55,333 - oe-selftest - INFO - gdbtest
/usr/bin/hello1
2018-12-26 09:37:59,904 - oe-selftest - ERROR - GDB result:
1: Reading symbols from /usr/bin/hello1...Reading symbols from
/usr/bin/.debug/hello4...done.
done.
(gdb) Breakpoint 1 at 0x1060: file /usr/include/bits/stdio2.h,
line 107.
(gdb) Starting program: /usr/bin/hello1
Breakpoint 1, main () at /usr/include/bits/stdio2.h:107
107 /usr/include/bits/stdio2.h: No such file or directory.
(gdb) Continuing.
Hello World!
[Inferior 1 (process 312) exited normally]
(gdb)
2018-12-26 09:38:00,907 - oe-selftest - INFO - ... FAIL
[snip]
The hello world problem is as follows.
$ cat
meta-selftest/recipes-test/selftest-hardlink/selftest-
hardlink/hello.c
#include <stdio.h>
int main() {
printf("Hello World!\n");
}
Some extra information:
1. Remove '-O2' or '-D_FORTIFY_SOURCE=2', and it works correctly.
2. Adding some system call like daemon(0,0) before printf also
works.
3. Reverting poky repo to
1c048479af7cc98e30f9a33d1f3bef03711544aa,
which adds this selftest case, does not work. It still fails.
4. Hongxu confirms that things work on his host.
5. I also don't see failure about this test case on yocto's
autobuilder.
Could somebody help to provide some suggestions?
This is strange and there must be some difference between your
configuration and what what we test on the autobuilder or on
Hongxu's
setup.
Hi Richard,
I have talked with Hongxu and we can now both confirm that there does
exist some problem.
Which DISTRO and MACHINE are you using?
DISTRO is poky
MACHINE is qemux86.
It seems that if MACHINE is qemux86-64, the test case could pass. But
that's just because the test case only checks 'Breakpoint 1, main ()
at hello.c:4'. See the console output below.
(gdb) b main
Breakpoint 1 at 0x1050: file /usr/include/bits/stdio2.h, line 107.
(gdb) r
Starting program: /usr/bin/hello1
Breakpoint 1, main () at hello.c:4
4 printf("Hello World!\n");
(gdb) c
Continuing.
Hello World!
[Inferior 1 (process 156) exited normally]
(gdb) q
Even in this case, the 'b main' does not give correct result. The
test case passes because 'Breakpoint 1, main () at hello.c:4' is
there.
On qemux86, we have:
(gdb) Breakpoint 1 at 0x1060: file /usr/include/bits/stdio2.h, line
107.
(gdb) Starting program: /usr/bin/hello1
Breakpoint 1, main () at /usr/include/bits/stdio2.h:107
107 /usr/include/bits/stdio2.h: No such file or directory.
(gdb) Continuing.
Hello World!
[Inferior 1 (process 156) exited normally]
(gdb)
I think the key to resolving this is will be to understanding how
to
reproduce it...
Two ways to reproduce the problem:
I) reproduce it via oe-selftest
1) . oe-init-build-env build-selftest
2) SANITY_TESTED_DISTROS = ""
3) oe-selftest -r package.PackageTests.test_gdb_hardlink_debug
II) reproduce it manually
1) add meta-selftest to bblayers.conf
2) IMAGE_INSTALL_append = " selftest-hardlink selftest-hardlink-dbg
selftest-hardlink-gdb"
3) bitbake core-image-minimal
4) On target:
gdb /usr/bin/hello1
(gdb) b main
I confirmed I could also reproduce it. We've just been lucky with the
configuration the autobuilder tests.
I think we need to improve the test case. Does installing the libc
headers/dev package so that stdio2.h is there help?
This is not exported API so libc headers may not work but installing
libc dev package should help here.
Cheers,
Richard
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