Bug 12802

Summary:	[Yocto-2.6_M1.RC1] Crosstap doesn't work on 2.6 M1 RC1
Product:	[Build System, Metadata & Runtime] Meta-yocto	Reporter:	pankaj yadav <pankaj-y>
Component:	meta-yocto	Assignee:	Manish Das <manish.das>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	Medium	CC:	manish.das, poky.bs.watcher, poky.watcher
Version:	2.6
Target Milestone:	2.7
Hardware:	x86
OS:	Multiple
Whiteboard:
OS type for building Yocto:	---	Type of Regression:	---
Verified:		Documentation change:	No (bug/feature does not impact docs)

Description pankaj yadav 2018-06-20 10:16:14 UTC

Test case ID :
https://bugzilla.yoctoproject.org/tr_show_case.cgi?case_id=319

Please find the logs :
pankajsx@andromeda02:/data/pankajsx/2.6M1.RC1/poky/build$ crosstap root@192.168.7.4 trace_open.stp
WARNING: cannot find module kernel debuginfo: No DWARF information found [man warning::debuginfo]

logs at Qemu target:
[ 991.809597] stap_d5fb6880184e693d95a69a3af202fd39_5_321: loading out-of-tree module traints kernel.

Debug Information at Qemu target:
Output of lsmod command :
Tainted: G
stap_d5fb6880184e693d95a69a3af202fd39_5_321 61440 2 - Live 0xffffffffc011c000 (0)
vvesafb 28672 1 - Live 0xffffffffc0114000

Comment 1 pankaj yadav 2018-06-21 08:19:53 UTC

While Regression, I am unable to see this issue with below mentioned cofiguration :
Branch: master
Build name: yocto-2.5_M1.rc1
poky commit: b73e96e7f3f5d1ba3a221d99792a7a3c7ef42c21  
Architecture : x86-64

Comment 2 Richard Purdie 2018-06-21 09:18:09 UTC

Does the test work other than showing a WARNING or are there other issues as well?

Comment 3 pankaj yadav 2018-06-22 03:19:10 UTC

With 2.6_M1.RC1 : 
I don't see "crosstap" has related output on host machine with WARNING message.

With 2.5_M1.RC1 (regression with previous build):
I see "crosstap" has related output on host machine but with WARNING message.

Comment 4 Stephen K Jolley 2018-06-29 15:06:22 UTC

The question appears to have been answered, if not put it back into NEEDINFO.

Comment 5 pankaj yadav 2018-07-02 05:38:26 UTC

Regression with 2.5_M4.RC1 :
I don't see "crosstap" has related output on host machine with WARNING message.

Comment 6 Manish Das 2018-07-24 05:58:14 UTC

I am able to see this issue with below mentioned configuration :
Build name: yocto-2.6M2.rc1
poky commit:  b0f2f690a3513e4c9fa30fee1b8d7ac2d7140657  
Architecture : x86-64

Comment 7 Victor Kamensky 2018-12-31 06:25:57 UTC

It seems it is another instance of non-bug also reported as [YOCTO #12974]
https://bugzilla.yoctoproject.org/show_bug.cgi?id=12974.

In short it seems that some output was expected from SystemTap script but
since nothing in the system uses 'open' system call none of output was produced.
Please look at 'Comment 2 of YOCTO #12974' https://bugzilla.yoctoproject.org/show_bug.cgi?id=12974#c2 for more details.

Please note I am guessing that trace_open.stp script has the same content as
it was reported in [YOCTO #12974]. To be 100% sure it is the case I put this
PR in NEEDINFO state. Upon response if it is the same trace_open.stp script
please consider putting this PR into RESOLVED state INVALID resolution based
on the same rational as it was explained in [YOCTO #12974]

Comment 8 Manish Das 2019-01-25 01:17:23 UTC

@Victor, we checked the behavior by testing with 2.6.1 rc1 release. The behavior is the same as what is described in the bug 12974.
Moving the status of the bug to the RESOLVED state. Thanks for the explanation.