Bug 815397

Summary: regression when use systemtap probe tracepoint
Product: Red Hat Enterprise Linux 6 Reporter: langfang <flang>
Component: qemu-kvmAssignee: Virtualization Maintenance <virt-maint>
Status: CLOSED DUPLICATE QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 6.3CC: acathrow, bsarathy, dyasny, juzhang, mkenneth, virt-maint
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-04-24 02:50:16 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 langfang 2012-04-23 14:15:14 UTC
Description of problem:

regression when use systemtap  test tracepoint

Version-Release number of selected component (if applicable):

#uname -r
2.6.32-262.el6.x86_64
#rpm -qa |grep qemu-kvm
qemu-kvm-0.12.1.2-2.282.el6.x86_64
#rpm -qa |grep systemtap
systemtap-1.7-3.el6.x86_64

How reproducible:

100%
Steps to Reproduce:
#cat balloon_event.stp

probe qemu.kvm.balloon_event

{  printf("opaque = %p,  addr =%u ",opaque,addr);

}
1.[root@dhcp-65-153 tracing-script]# stap balloon_event.stp
parse error: expected literal string or number
        saw: operator '=' at /usr/share/systemtap/tapset/qemu-kvm.stp:814:8
     source:   next = $arg1;
                    ^
1 parse error.
WARNING: tapset '/usr/share/systemtap/tapset/qemu-kvm.stp' has errors, and will be skipped.
semantic error: probe point mismatch at position 0  (alternatives: __nfs __scheduler __signal __tcpmib __vm _linuxmib _signal _sunrpc _syscall _vfs begin begin(number) end end(number) error error(number) generic ioblock ioblock_trace ioscheduler ioscheduler_trace ipmib irq_handler kernel kprobe kprocess libvirt linuxmib module(string) nd_syscall netdev never nfs nfsd perf process process(number) process(string) procfs procfs(string) python scheduler scsi signal socket softirq stap staprun sunrpc syscall tcp tcpmib timer tty udp vfs vm workqueue): identifier 'qemu' at balloon_event.stp:1:7 while resolving probe point qemu.kvm.balloon_event
        source: probe qemu.kvm.balloon_event
                      ^
Pass 2: analysis failed.  Try again with another '--vp 01' option.


2.
3.
  
Actual results:
can not probe tracepoint

Expected results:

can be probe
Additional info:bug 720979 seem like the same problem,but fixed on virsion qemu-kvm-0.12.1.2-2.181.el6

Comment 2 langfang 2012-04-24 02:50:16 UTC

*** This bug has been marked as a duplicate of bug 798676 ***