qemu-kvm AVC

[Daniel J Walsh]

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Tom London wrote:
> On Wed, Feb 13, 2008 at 11:51 AM, Tom London <selinux at gmail.com> wrote:
>> Hadn't run qemu-kvm for a bit.
>>
>>  Now get this AVC (both enforcing/targeted):
>>
>>
>>  type=AVC msg=audit(1202932089.281:48): avc:  denied  { execmem } for
>>  pid=10351 comm="qemu-kvm"
>>  scontext=unconfined_u:unconfined_r:unconfined_t:s0
>>  tcontext=unconfined_u:unconfined_r:unconfined_t:s0 tclass=process
>>  type=SYSCALL msg=audit(1202932089.281:48): arch=40000003 syscall=125
>>  success=no exit=-13 a0=8df0000 a1=1001000 a2=7 a3=a7d5358 items=0
>>  ppid=3049 pid=10351 auid=500 uid=500 gid=500 euid=500 suid=500
>>  fsuid=500 egid=500 sgid=500 fsgid=500 tty=pts1 comm="qemu-kvm"
>>  exe="/usr/bin/qemu-kvm" subj=unconfined_u:unconfined_r:unconfined_t:s0
>>  key=(null)
>>
>>  Not sure if it interferes with anything....
>>
> Believe this causes this:
> 
> Feb 14 07:55:10 localhost kernel: qemu-kvm[7350] general protection
> ip:80d6ffd sp:bfb48e40 error:0 in qemu-kvm[8047000+12d000]
> Feb 14 07:55:10 localhost setroubleshoot: SELinux is preventing
> qemu-kvm from changing a writable memory segment executable. For
> complete SELinux messages. run sealert -l
> f7ee40db-9506-48d2-bde6-396eb39ef085
> 
> 

There is a new boolean
allow_unconfined_qemu_transition

That will run qemu under a confined domain.  So if you turn it on, you
get execmem.

Todays rawhide should give it execmem if the transition is off also.

I use virt-manager to start my qemu. which runs them in  a confined domain.
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