Bug 585951

Summary: A process using kvm can enter a non-killable state
Product: Red Hat Enterprise Linux 5 Reporter: Naphtali Sprei <nsprei>
Component: kvmAssignee: Virtualization Maintenance <virt-maint>
Status: CLOSED DUPLICATE QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: low    
Version: 5.4CC: mtosatti, virt-maint, ykaul
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2010-05-04 07:38:59 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
test-case for the bug none

Description Naphtali Sprei 2010-04-26 14:19:45 UTC
Description of problem:

While running one of the qemu-kvm unit test (called access), the qemu process
gets to a state that it cannot be killed. When killed, the process get's zombied
but continue to consume resources.

Version-Release number of selected component (if applicable):
kvm-83-143.el5

How reproducible:
Consistently, every time.

Steps to Reproduce:
1. qemu-kvm -kernel access.flat (the attached test-case)

   This test-case was/can be built from qemu-kvm unit tests.
   clone an upstream qemu-kvm git repo, go to its subdir kvm/user and type make
   test-cases are created in test/x86 subdir, including access.flat
   Intended test runs with following parameters to produce output:
    "-kernel access.flat -device testdev,chardev=testlog -chardev file,id=testlog,path=access.log", where access.log is an example of an output file
2. wait about 5 minutes

   Actually, the test-case runs lots of sub-test-cases until it reaches the problematic sub-test-case that causes this problem. You can follow the output to see when it's stuck.

3. try to kill qemu-kvm process
  
Actual results:
qemu-kvm process keeps running

Expected results:
qemu-kvm process killed and disappear

Additional info:

Comment 1 Naphtali Sprei 2010-04-26 14:22:19 UTC
Created attachment 409187 [details]
test-case for the bug

Comment 2 Marcelo Tosatti 2010-05-04 07:38:59 UTC

*** This bug has been marked as a duplicate of bug 588251 ***