@ClaudeD,
could you please list either a kvm command line or a virsh dumpxml
output (or both) for a domain that has trouble? I tried to reproduce
jsut passing in a yubikey, but had no permission problems.
(in my test, the kvm command was started with specific
hostbus=2,hostaddr=4 information, so presumably you're passing in
something more generic which requires qemu to look for host info...)
** Also affects: libvirt (Ubuntu Saucy)
Importance: Undecided
Status: New
** Description changed:
+ =============================
+ SRU Justification:
+ 1. Impact: usb devices can't be used under libvirt kvm guests
+ 2. Development fix: allow libvirt to have read access to some information it
now insists on having.
+ 3. Stable fix: cherrypick of dev fix
+ 4. Test case: create a libvirt VM with a usb device passed from the host
+ 5. Regression potential: This allows libvirt to see a bit more host system
information, however the security team sees no problem with it.
+ ==============================
+
Upgraded a 13.04 64 bit to 13.10. Before the upgrade, I had KVM guest
with usb devices working well. Since the upgrade, apparmor blocks access
to usb devices with the following errors :
Oct 27 14:17:29 laptop kernel: [ 5771.844806] type=1400
audit(1382897849.445:339): apparmor="DENIED" operation="open" parent=1
profile="libvirt-655920dd-7b6f-f20b-bb77-b5bbaa133eee" name="/dev/bus/usb/"
pid=12253 comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=119
ouid=0
Oct 27 14:17:29 laptop kernel: [ 5771.844847] type=1400
audit(1382897849.445:340): apparmor="DENIED" operation="open" parent=1
profile="libvirt-655920dd-7b6f-f20b-bb77-b5bbaa133eee" name="/dev/" pid=12253
comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=119 ouid=0
Oct 27 14:17:29 laptop kernel: [ 5771.844947] type=1400
audit(1382897849.445:341): apparmor="DENIED" operation="open" parent=1
profile="libvirt-655920dd-7b6f-f20b-bb77-b5bbaa133eee" name="/dev/bus/usb/"
pid=12253 comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=119
ouid=0
Oct 27 14:17:29 laptop kernel: [ 5771.844967] type=1400
audit(1382897849.445:342): apparmor="DENIED" operation="open" parent=1
profile="libvirt-655920dd-7b6f-f20b-bb77-b5bbaa133eee" name="/dev/" pid=12253
comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=119 ouid=0
Oct 27 14:17:29 laptop kernel: [ 5771.845051] type=1400
audit(1382897849.445:343): apparmor="DENIED" operation="open" parent=1
profile="libvirt-655920dd-7b6f-f20b-bb77-b5bbaa133eee" name="/dev/bus/usb/"
pid=12253 comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=119
ouid=0
Oct 27 14:17:29 laptop kernel: [ 5771.845069] type=1400
audit(1382897849.445:344): apparmor="DENIED" operation="open" parent=1
profile="libvirt-655920dd-7b6f-f20b-bb77-b5bbaa133eee" name="/dev/" pid=12253
comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=119 ouid=0
The profile looks fine :
/etc/apparmor.d/libvirt/libvirt-655920dd-7b6f-f20b-bb77-b5bbaa133eee:
#
# This profile is for the domain whose UUID matches this file.
#
#include <tunables/global>
profile libvirt-655920dd-7b6f-f20b-bb77-b5bbaa133eee {
#include <abstractions/libvirt-qemu>
#include <libvirt/libvirt-655920dd-7b6f-f20b-bb77-b5bbaa133eee.files>
}
/etc/apparmor.d/libvirt/libvirt-655920dd-7b6f-f20b-bb77-b5bbaa133eee.files:
# DO NOT EDIT THIS FILE DIRECTLY. IT IS MANAGED BY LIBVIRT.
"/var/log/libvirt/**/windows-xp.log" w,
"/var/lib/libvirt/**/windows-xp.monitor" rw,
"/var/run/libvirt/**/windows-xp.pid" rwk,
"/run/libvirt/**/windows-xp.pid" rwk,
"/var/run/libvirt/**/*.tunnelmigrate.dest.windows-xp" rw,
"/run/libvirt/**/*.tunnelmigrate.dest.windows-xp" rw,
"/home/vm/windowsxp.img" rw,
"/dev/bus/usb/002/012" rw,
"/dev/bus/usb/002/011" rw,
"/dev/bus/usb/002/007" rw,
** Changed in: libvirt (Ubuntu Saucy)
Importance: Undecided => High
** Changed in: libvirt (Ubuntu Saucy)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1245251
Title:
Apparmor blocks usb devices in libvirt in Saucy
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