[pkg-apparmor] Bug#905339: Some open operations are DENIED by AppArmor

[Haruki TSURUMOTO]

Package: libvirt-daemon-system
Version: 3.0.0-4+deb9u3
Severity: normal
X-Debbugs-Cc: apparmor at packages.debian.org

Dear maintainers, (CCed: apparmor-maintainers)

I had enabled AppArmor on my debian stretch machine.
I found some libvirt's open operations are DENIED by apparmor.
Please see below.

```
Jul 30 20:35:22 debian-tsr-nuc1 kernel: [   39.503726] audit: type=1400 
audit(1532950522.067:41): apparmor="DENIED" operation="open" 
profile="libvirt-2453a1d1-16fd-446a-b7df-3b1b0ac4a506" 
name="/sys/devices/system/node/" pid=1307 comm="qemu-system-x86" 
requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
Jul 30 20:35:22 debian-tsr-nuc1 kernel: [   39.503778] audit: type=1400 
audit(1532950522.067:42): apparmor="DENIED" operation="open" 
profile="libvirt-2453a1d1-16fd-446a-b7df-3b1b0ac4a506" 
name="/sys/devices/system/cpu/" pid=1307 comm="qemu-system-x86" 
requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
Jul 30 20:35:22 debian-tsr-nuc1 kernel: [   39.538158] audit: type=1400 
audit(1532950522.103:43): apparmor="DENIED" operation="open" 
profile="libvirt-2453a1d1-16fd-446a-b7df-3b1b0ac4a506" 
name="/sys/module/vhost/parameters/max_mem_regions" pid=1307 
comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
Jul 30 20:35:36 debian-tsr-nuc1 kernel: [   54.393592] audit: type=1400 
audit(1532950536.959:46): apparmor="DENIED" operation="open" 
profile="libvirt-974b3462-9525-49d8-82db-2a3eb9bb972f" 
name="/sys/devices/system/node/" pid=1376 comm="qemu-system-x86" 
requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
Jul 30 20:35:36 debian-tsr-nuc1 kernel: [   54.393648] audit: type=1400 
audit(1532950536.959:47): apparmor="DENIED" operation="open" 
profile="libvirt-974b3462-9525-49d8-82db-2a3eb9bb972f" 
name="/sys/devices/system/cpu/" pid=1376 comm="qemu-system-x86" 
requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
Jul 30 20:35:36 debian-tsr-nuc1 kernel: [   54.404634] audit: type=1400 
audit(1532950536.967:48): apparmor="DENIED" operation="open" 
profile="libvirt-974b3462-9525-49d8-82db-2a3eb9bb972f" 
name="/sys/module/vhost/parameters/max_mem_regions" pid=1376 
comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
Jul 31 12:51:24 debian-tsr-nuc1 kernel: [58602.024293] audit: type=1400 
audit(1533009084.686:49): apparmor="DENIED" operation="open" 
profile="libvirt-2453a1d1-16fd-446a-b7df-3b1b0ac4a506" 
name="/proc/548/cmdline" pid=1307 comm="qemu-system-x86" 
requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
```

These policy conflicts were fixed in upstream.

I attached a patch which backported from these commit.
https://libvirt.org/git/?p=libvirt.git;a=commit;h=e7f5d627f93c1c71260d2a795a1227b16b0d3186
https://libvirt.org/git/?p=libvirt.git;a=commit;h=0af5ced4b81b68be7016d1f8755db3d0c3249278

Would you apply this patch for stretch?

Regards,
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