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Bug 1940761

Summary: example strace.stp doesn't work on RHEL8.3 and RHEL8.4 beta
Product: Red Hat Enterprise Linux 8 Reporter: Masahiro Matsuya <mmatsuya>
Component: systemtapAssignee: Frank Ch. Eigler <fche>
systemtap sub component: system-version QA Contact: Martin Cermak <mcermak>
Status: CLOSED ERRATA Docs Contact:
Severity: high    
Priority: high CC: lberk, mcermak, mjw
Version: 8.4Keywords: Bugfix, Patch, Triaged
Target Milestone: rcFlags: pm-rhel: mirror+
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: systemtap-4.5-1.el8 Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-11-09 18:15:41 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Masahiro Matsuya 2021-03-19 05:42:41 UTC
Description of problem:

An example strace.stp doesn't work with the following error on RHEL8.3 and RHEL8.4 beta.


# stap -v /usr/share/systemtap/examples/process/strace.stp -w -c "echo hello world" 
Pass 1: parsed user script and 485 library scripts using 284084virt/129000res/12384shr/116244data kb, in 280usr/30sys/313real ms.
Pass 2: analyzed script: 1827 probes, 217 functions, 103 embeds, 176 globals using 315768virt/162332res/13948shr/147928data kb, in 8010usr/310sys/8391real ms.
Pass 3: translated to C into "/tmp/stapdGSBwq/stap_b506758f926165a2353c8b0dc22ecf63_1664129_src.c" using 316640virt/163280res/14012shr/148800data kb, in 420usr/10sys/432real ms.
/tmp/stapdGSBwq/stap_b506758f926165a2353c8b0dc22ecf63_1664129_src.c: In function ‘function___global__struct_compat_timex_u__overload_0’:
/tmp/stapdGSBwq/stap_b506758f926165a2353c8b0dc22ecf63_1664129_src.c:257114:22: error: storage size of ‘ts’ isn’t known
  struct compat_timex ts;
                      ^~
/tmp/stapdGSBwq/stap_b506758f926165a2353c8b0dc22ecf63_1664129_src.c:257122:14: error: invalid application of ‘sizeof’ to incomplete type ‘struct old_timex32’
       sizeof(struct compat_timex)) == 0)
              ^~~~~~
make[1]: *** [scripts/Makefile.build:315: /tmp/stapdGSBwq/stap_b506758f926165a2353c8b0dc22ecf63_1664129_src.o] Error 1
make: *** [Makefile:1563: _module_/tmp/stapdGSBwq] Error 2
WARNING: kbuild exited with status: 2
Pass 4: compiled C into "stap_b506758f926165a2353c8b0dc22ecf63_1664129.ko" in 29730usr/850sys/30906real ms.
Pass 4: compilation failed.  [man error::pass4]



Version-Release number of selected component (if applicable):
Red Hat Enterprise Linux 8.3
Red Hat Enterprise Linux 8.4 Beta

How reproducible:
Always

Steps to Reproduce:
1. run: 
  # stap -v /usr/share/systemtap/examples/process/strace.stp -w -c "echo hello world" 

Actual results:
The stap failed for strace.stp example.

Expected results:
The stap doesn't fail for strace.stp example.

Additional info:

I wanted to use the strace.stp for analyzing fapolicyd daemon, since
strace command using ptrace system call can not be used for fapolicyd daemon, causing the whole system hang.

It's same even with gcc-toolset-10.

Comment 4 Frank Ch. Eigler 2021-03-24 00:41:12 UTC
upstream commit 59c84145ac38 tweaks the original patch a little more selectively

Comment 5 Martin Cermak 2021-05-21 14:34:16 UTC
Verified with systemtap-4.5-1.el8.

Comment 8 errata-xmlrpc 2021-11-09 18:15:41 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (systemtap bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:4215