Further investigation suspects a problem with udev and systemd: # udevadm test $(udevadm info -q path -n kvm) calling: test version 204 This program is for debugging only, it does not run any program specified by a RUN key. It may show incorrect results, because some values may be different, or not available at a simulation run.
=== trie on-disk === tool version: 204 file size: 5759486 bytes header size 80 bytes strings 1267110 bytes nodes 4492296 bytes load module index read rules file: /lib/udev/rules.d/40-bridge-network-interface.rules read rules file: /lib/udev/rules.d/40-crda.rules read rules file: /lib/udev/rules.d/40-gnupg.rules read rules file: /lib/udev/rules.d/40-hyperv-hotadd.rules read rules file: /lib/udev/rules.d/40-libgphoto2-6.rules GOTO 'libgphoto2_usb_end' has no matching label in: '/lib/udev/rules.d/40-libgphoto2-6.rules' read rules file: /lib/udev/rules.d/40-libsane.rules read rules file: /lib/udev/rules.d/40-qemu-system-common.rules read rules file: /lib/udev/rules.d/40-vlan-network-interface.rules read rules file: /lib/udev/rules.d/42-usb-hid-pm.rules read rules file: /lib/udev/rules.d/50-firmware.rules read rules file: /lib/udev/rules.d/50-rbd.rules read rules file: /lib/udev/rules.d/50-udev-default.rules read rules file: /lib/udev/rules.d/55-dm.rules read rules file: /lib/udev/rules.d/56-lvm.rules read rules file: /lib/udev/rules.d/60-cdrom_id.rules read rules file: /lib/udev/rules.d/60-keyboard.rules read rules file: /lib/udev/rules.d/60-persistent-alsa.rules read rules file: /lib/udev/rules.d/60-persistent-input.rules read rules file: /lib/udev/rules.d/60-persistent-serial.rules read rules file: /lib/udev/rules.d/60-persistent-storage-dm.rules read rules file: /lib/udev/rules.d/60-persistent-storage-tape.rules read rules file: /lib/udev/rules.d/60-persistent-storage.rules read rules file: /lib/udev/rules.d/60-persistent-v4l.rules read rules file: /lib/udev/rules.d/61-accelerometer.rules read rules file: /lib/udev/rules.d/62-google-cloudimg.rules read rules file: /lib/udev/rules.d/64-btrfs.rules read rules file: /lib/udev/rules.d/69-cd-sensors.rules IMPORT found builtin 'usb_id --export %p', replacing /lib/udev/rules.d/69-cd-sensors.rules:89 read rules file: /etc/udev/rules.d/70-persistent-net.rules read rules file: /lib/udev/rules.d/70-power-switch.rules read rules file: /etc/udev/rules.d/70-smartcard-hsm.rules read rules file: /lib/udev/rules.d/70-uaccess.rules read rules file: /lib/udev/rules.d/71-biosdevname.rules read rules file: /lib/udev/rules.d/71-seat.rules read rules file: /lib/udev/rules.d/73-idrac.rules read rules file: /lib/udev/rules.d/73-seat-late.rules read rules file: /lib/udev/rules.d/75-net-description.rules read rules file: /lib/udev/rules.d/75-persistent-net-generator.rules read rules file: /lib/udev/rules.d/75-probe_mtd.rules read rules file: /lib/udev/rules.d/75-tty-description.rules read rules file: /lib/udev/rules.d/78-graphics-card.rules read rules file: /lib/udev/rules.d/78-sound-card.rules read rules file: /lib/udev/rules.d/80-drivers.rules read rules file: /lib/udev/rules.d/80-udisks2.rules read rules file: /lib/udev/rules.d/85-hdparm.rules read rules file: /lib/udev/rules.d/85-keyboard-configuration.rules read rules file: /lib/udev/rules.d/85-lvm2.rules read rules file: /lib/udev/rules.d/85-regulatory.rules read rules file: /lib/udev/rules.d/95-cd-devices.rules read rules file: /lib/udev/rules.d/95-udev-late.rules rules contain 98304 bytes tokens (8192 * 12 bytes), 17986 bytes strings 6230 strings (56539 bytes), 4793 de-duplicated (39991 bytes), 1438 trie nodes used IMPORT builtin 'usb_id' /lib/udev/rules.d/40-libgphoto2-6.rules:3 unable to access usb_interface device of '/sys/devices/virtual/misc/kvm' IMPORT builtin 'usb_id' returned non-zero GROUP 106 /lib/udev/rules.d/40-qemu-system-common.rules:1 MODE 0660 /lib/udev/rules.d/40-qemu-system-common.rules:1 OWNER 0 /etc/udev/rules.d/70-smartcard-hsm.rules:2 GROUP 0 /etc/udev/rules.d/70-smartcard-hsm.rules:2 MODE 0660 /etc/udev/rules.d/70-smartcard-hsm.rules:2 IMPORT builtin 'path_id' /lib/udev/rules.d/71-seat.rules:43 IMPORT builtin 'path_id' returned non-zero RUN 'uaccess' /lib/udev/rules.d/73-seat-late.rules:15 handling device node '/dev/kvm', devnum=c10:232, mode=0660, uid=0, gid=0 preserve permissions /dev/kvm, 020660, uid=0, gid=0 preserve already existing symlink '/dev/char/10:232' to '../kvm' ACTION=add DEVNAME=/dev/kvm DEVPATH=/devices/virtual/misc/kvm MAJOR=10 MINOR=232 SUBSYSTEM=misc TAGS=:seat:uaccess: USEC_INITIALIZED=73725 run: 'uaccess' unload module index but # cat /lib/udev/rules.d/40-qemu-system-common.rules KERNEL=="kvm", GROUP="kvm", MODE="0660" so /dev/kvm should have group "kvm" instead of root. Every device is owned by root:root: # l /dev/ insgesamt 12 drwxr-xr-x 16 root root 4360 Feb 24 17:00 . drwxr-xr-x 22 root root 4096 Feb 23 05:04 .. crw------- 1 root root 10, 235 Feb 24 17:32 autofs -rw-r--r-- 1 root root 1105 Feb 24 17:00 .blkid.tab -rw-r--r-- 1 root root 1109 Feb 24 17:00 .blkid.tab.old drwxr-xr-x 2 root root 780 Feb 24 16:59 block drwxr-xr-x 2 root root 60 Feb 24 16:59 bsg crw------- 1 root root 10, 234 Feb 24 17:32 btrfs-control drwxr-xr-x 3 root root 60 Feb 24 16:59 bus drwxr-xr-x 2 root root 3360 Feb 24 17:00 char crw-rw---- 1 root root 5, 1 Feb 24 17:35 console lrwxrwxrwx 1 root root 11 Feb 24 16:59 core -> /proc/kcore drwxr-xr-x 2 root root 60 Feb 24 16:59 cpu crw-rw---- 1 root root 10, 60 Feb 24 17:35 cpu_dma_latency crw------- 1 root root 10, 203 Feb 24 17:32 cuse drwxr-xr-x 6 root root 120 Feb 24 16:59 disk brw-rw---- 1 root root 252, 0 Feb 24 17:35 dm-0 brw-rw---- 1 root root 252, 1 Feb 24 17:35 dm-1 brw-rw---- 1 root root 252, 2 Feb 24 17:35 dm-2 brw-rw---- 1 root root 252, 3 Feb 24 17:46 dm-3 brw-rw---- 1 root root 252, 4 Feb 24 17:39 dm-4 brw-rw---- 1 root root 252, 5 Feb 24 17:35 dm-5 brw-rw---- 1 root root 252, 6 Feb 24 17:46 dm-6 brw-rw---- 1 root root 252, 7 Feb 24 17:35 dm-7 brw-rw---- 1 root root 252, 8 Feb 24 17:35 dm-8 crw-rw---- 1 root root 10, 61 Feb 24 17:35 ecryptfs crw-rw---- 1 root root 29, 0 Feb 24 17:35 fb0 lrwxrwxrwx 1 root root 13 Feb 24 16:59 fd -> /proc/self/fd crw-rw---- 1 root root 1, 7 Feb 24 17:35 full crw-rw---- 1 root root 10, 229 Feb 24 17:35 fuse crw-rw---- 1 root root 249, 0 Feb 24 17:35 hidraw0 crw-rw---- 1 root root 249, 1 Feb 24 17:35 hidraw1 crw-rw---- 1 root root 10, 228 Feb 24 17:35 hpet lrwxrwxrwx 1 root root 14 Feb 24 16:59 .initramfs -> /run/initramfs drwxr-xr-x 4 root root 220 Feb 24 17:00 input crw-rw---- 1 root root 248, 0 Feb 24 17:35 ipmi0 crw-rw---- 1 root root 1, 11 Feb 24 17:35 kmsg crw-rw---- 1 root root 10, 232 Feb 24 17:46 kvm srw-rw-rw- 1 root root 0 Feb 24 17:00 log brw-rw---- 1 root root 7, 0 Feb 24 17:35 loop0 brw-rw---- 1 root root 7, 1 Feb 24 17:35 loop1 brw-rw---- 1 root root 7, 2 Feb 24 17:35 loop2 brw-rw---- 1 root root 7, 3 Feb 24 17:35 loop3 brw-rw---- 1 root root 7, 4 Feb 24 17:35 loop4 brw-rw---- 1 root root 7, 5 Feb 24 17:35 loop5 brw-rw---- 1 root root 7, 6 Feb 24 17:35 loop6 brw-rw---- 1 root root 7, 7 Feb 24 17:35 loop7 crw-rw---- 1 root root 10, 237 Feb 24 17:35 loop-control drwxr-xr-x 2 root root 240 Feb 24 16:59 mapper crw-rw---- 1 root root 10, 227 Feb 24 17:35 mcelog crw-rw---- 1 root root 1, 1 Feb 24 17:35 mem crw-rw---- 1 root root 10, 57 Feb 24 17:35 memory_bandwidth drwxr-xr-x 2 root root 60 Feb 24 16:59 net crw-rw---- 1 root root 10, 59 Feb 24 17:35 network_latency crw-rw---- 1 root root 10, 58 Feb 24 17:35 network_throughput crw-rw---- 1 root root 1, 3 Feb 24 17:35 null crw-rw---- 1 root root 1, 4 Feb 24 17:35 port crw-rw---- 1 root root 108, 0 Feb 24 17:35 ppp crw-rw---- 1 root root 10, 1 Feb 24 17:35 psaux crw-rw---- 1 root root 5, 2 Feb 24 17:46 ptmx crw-rw---- 1 root root 250, 0 Feb 24 17:35 ptp0 crw-rw---- 1 root root 250, 1 Feb 24 17:35 ptp1 drwxr-xr-x 2 root root 0 Feb 24 16:59 pts brw-rw---- 1 root root 1, 0 Feb 24 17:35 ram0 brw-rw---- 1 root root 1, 1 Feb 24 17:35 ram1 brw-rw---- 1 root root 1, 10 Feb 24 17:35 ram10 brw-rw---- 1 root root 1, 11 Feb 24 17:35 ram11 brw-rw---- 1 root root 1, 12 Feb 24 17:35 ram12 brw-rw---- 1 root root 1, 13 Feb 24 17:35 ram13 brw-rw---- 1 root root 1, 14 Feb 24 17:35 ram14 brw-rw---- 1 root root 1, 15 Feb 24 17:35 ram15 brw-rw---- 1 root root 1, 2 Feb 24 17:35 ram2 brw-rw---- 1 root root 1, 3 Feb 24 17:35 ram3 brw-rw---- 1 root root 1, 4 Feb 24 17:35 ram4 brw-rw---- 1 root root 1, 5 Feb 24 17:35 ram5 brw-rw---- 1 root root 1, 6 Feb 24 17:35 ram6 brw-rw---- 1 root root 1, 7 Feb 24 17:35 ram7 brw-rw---- 1 root root 1, 8 Feb 24 17:35 ram8 brw-rw---- 1 root root 1, 9 Feb 24 17:35 ram9 crw-rw---- 1 root root 1, 8 Feb 24 17:35 random crw-rw---- 1 root root 10, 62 Feb 24 17:35 rfkill lrwxrwxrwx 1 root root 4 Feb 24 17:35 rtc -> rtc0 crw-rw---- 1 root root 254, 0 Feb 24 17:35 rtc0 brw-rw---- 1 root root 8, 0 Feb 24 17:35 sda brw-rw---- 1 root root 8, 1 Feb 24 17:35 sda1 brw-rw---- 1 root root 8, 2 Feb 24 17:35 sda2 brw-rw---- 1 root root 8, 3 Feb 24 17:35 sda3 crw-rw---- 1 root root 21, 0 Feb 24 17:35 sg0 lrwxrwxrwx 1 root root 8 Feb 24 17:00 shm -> /run/shm crw-rw---- 1 root root 10, 231 Feb 24 17:35 snapshot drwxr-xr-x 2 root root 80 Feb 24 17:00 snd lrwxrwxrwx 1 root root 15 Feb 24 16:59 stderr -> /proc/self/fd/2 lrwxrwxrwx 1 root root 15 Feb 24 16:59 stdin -> /proc/self/fd/0 lrwxrwxrwx 1 root root 15 Feb 24 16:59 stdout -> /proc/self/fd/1 crw-rw---- 1 root root 5, 0 Feb 24 17:35 tty crw-rw---- 1 root root 4, 0 Feb 24 17:35 tty0 crw-rw---- 1 root root 4, 1 Feb 24 17:35 tty1 crw-rw---- 1 root root 4, 10 Feb 24 17:35 tty10 crw-rw---- 1 root root 4, 11 Feb 24 17:35 tty11 crw-rw---- 1 root root 4, 12 Feb 24 17:35 tty12 crw-rw---- 1 root root 4, 13 Feb 24 17:35 tty13 crw-rw---- 1 root root 4, 14 Feb 24 17:35 tty14 crw-rw---- 1 root root 4, 15 Feb 24 17:35 tty15 crw-rw---- 1 root root 4, 16 Feb 24 17:35 tty16 crw-rw---- 1 root root 4, 17 Feb 24 17:35 tty17 crw-rw---- 1 root root 4, 18 Feb 24 17:35 tty18 crw-rw---- 1 root root 4, 19 Feb 24 17:35 tty19 crw-rw---- 1 root root 4, 2 Feb 24 17:35 tty2 crw-rw---- 1 root root 4, 20 Feb 24 17:35 tty20 crw-rw---- 1 root root 4, 21 Feb 24 17:35 tty21 crw-rw---- 1 root root 4, 22 Feb 24 17:35 tty22 crw-rw---- 1 root root 4, 23 Feb 24 17:35 tty23 crw-rw---- 1 root root 4, 24 Feb 24 17:35 tty24 crw-rw---- 1 root root 4, 25 Feb 24 17:35 tty25 crw-rw---- 1 root root 4, 26 Feb 24 17:35 tty26 crw-rw---- 1 root root 4, 27 Feb 24 17:35 tty27 crw-rw---- 1 root root 4, 28 Feb 24 17:35 tty28 crw-rw---- 1 root root 4, 29 Feb 24 17:35 tty29 crw-rw---- 1 root root 4, 3 Feb 24 17:35 tty3 crw-rw---- 1 root root 4, 30 Feb 24 17:35 tty30 crw-rw---- 1 root root 4, 31 Feb 24 17:35 tty31 crw-rw---- 1 root root 4, 32 Feb 24 17:35 tty32 crw-rw---- 1 root root 4, 33 Feb 24 17:35 tty33 crw-rw---- 1 root root 4, 34 Feb 24 17:35 tty34 crw-rw---- 1 root root 4, 35 Feb 24 17:35 tty35 crw-rw---- 1 root root 4, 36 Feb 24 17:35 tty36 crw-rw---- 1 root root 4, 37 Feb 24 17:35 tty37 crw-rw---- 1 root root 4, 38 Feb 24 17:35 tty38 crw-rw---- 1 root root 4, 39 Feb 24 17:35 tty39 crw-rw---- 1 root root 4, 4 Feb 24 17:35 tty4 crw-rw---- 1 root root 4, 40 Feb 24 17:35 tty40 crw-rw---- 1 root root 4, 41 Feb 24 17:35 tty41 crw-rw---- 1 root root 4, 42 Feb 24 17:35 tty42 crw-rw---- 1 root root 4, 43 Feb 24 17:35 tty43 crw-rw---- 1 root root 4, 44 Feb 24 17:35 tty44 crw-rw---- 1 root root 4, 45 Feb 24 17:35 tty45 crw-rw---- 1 root root 4, 46 Feb 24 17:35 tty46 crw-rw---- 1 root root 4, 47 Feb 24 17:35 tty47 crw-rw---- 1 root root 4, 48 Feb 24 17:35 tty48 crw-rw---- 1 root root 4, 49 Feb 24 17:35 tty49 crw-rw---- 1 root root 4, 5 Feb 24 17:35 tty5 crw-rw---- 1 root root 4, 50 Feb 24 17:35 tty50 crw-rw---- 1 root root 4, 51 Feb 24 17:35 tty51 crw-rw---- 1 root root 4, 52 Feb 24 17:35 tty52 crw-rw---- 1 root root 4, 53 Feb 24 17:35 tty53 crw-rw---- 1 root root 4, 54 Feb 24 17:35 tty54 crw-rw---- 1 root root 4, 55 Feb 24 17:35 tty55 crw-rw---- 1 root root 4, 56 Feb 24 17:35 tty56 crw-rw---- 1 root root 4, 57 Feb 24 17:35 tty57 crw-rw---- 1 root root 4, 58 Feb 24 17:35 tty58 crw-rw---- 1 root root 4, 59 Feb 24 17:35 tty59 crw-rw---- 1 root root 4, 6 Feb 24 17:35 tty6 crw-rw---- 1 root root 4, 60 Feb 24 17:35 tty60 crw-rw---- 1 root root 4, 61 Feb 24 17:35 tty61 crw-rw---- 1 root root 4, 62 Feb 24 17:35 tty62 crw-rw---- 1 root root 4, 63 Feb 24 17:35 tty63 crw-rw---- 1 root root 4, 7 Feb 24 17:35 tty7 crw-rw---- 1 root root 4, 8 Feb 24 17:35 tty8 crw-rw---- 1 root root 4, 9 Feb 24 17:35 tty9 crw-rw---- 1 root root 5, 3 Feb 24 17:35 ttyprintk crw-rw---- 1 root root 4, 64 Feb 24 17:35 ttyS0 crw-rw---- 1 root root 4, 65 Feb 24 17:35 ttyS1 crw-rw---- 1 root root 4, 74 Feb 24 17:35 ttyS10 crw-rw---- 1 root root 4, 75 Feb 24 17:35 ttyS11 crw-rw---- 1 root root 4, 76 Feb 24 17:35 ttyS12 crw-rw---- 1 root root 4, 77 Feb 24 17:35 ttyS13 crw-rw---- 1 root root 4, 78 Feb 24 17:35 ttyS14 crw-rw---- 1 root root 4, 79 Feb 24 17:35 ttyS15 crw-rw---- 1 root root 4, 80 Feb 24 17:35 ttyS16 crw-rw---- 1 root root 4, 81 Feb 24 17:35 ttyS17 crw-rw---- 1 root root 4, 82 Feb 24 17:35 ttyS18 crw-rw---- 1 root root 4, 83 Feb 24 17:35 ttyS19 crw-rw---- 1 root root 4, 66 Feb 24 17:35 ttyS2 crw-rw---- 1 root root 4, 84 Feb 24 17:35 ttyS20 crw-rw---- 1 root root 4, 85 Feb 24 17:35 ttyS21 crw-rw---- 1 root root 4, 86 Feb 24 17:35 ttyS22 crw-rw---- 1 root root 4, 87 Feb 24 17:35 ttyS23 crw-rw---- 1 root root 4, 88 Feb 24 17:35 ttyS24 crw-rw---- 1 root root 4, 89 Feb 24 17:35 ttyS25 crw-rw---- 1 root root 4, 90 Feb 24 17:35 ttyS26 crw-rw---- 1 root root 4, 91 Feb 24 17:35 ttyS27 crw-rw---- 1 root root 4, 92 Feb 24 17:35 ttyS28 crw-rw---- 1 root root 4, 93 Feb 24 17:35 ttyS29 crw-rw---- 1 root root 4, 67 Feb 24 17:35 ttyS3 crw-rw---- 1 root root 4, 94 Feb 24 17:35 ttyS30 crw-rw---- 1 root root 4, 95 Feb 24 17:35 ttyS31 crw-rw---- 1 root root 4, 68 Feb 24 17:35 ttyS4 crw-rw---- 1 root root 4, 69 Feb 24 17:35 ttyS5 crw-rw---- 1 root root 4, 70 Feb 24 17:35 ttyS6 crw-rw---- 1 root root 4, 71 Feb 24 17:35 ttyS7 crw-rw---- 1 root root 4, 72 Feb 24 17:35 ttyS8 crw-rw---- 1 root root 4, 73 Feb 24 17:35 ttyS9 drwxr-xr-x 3 root root 60 Feb 24 17:00 .udev crw------- 1 root root 10, 239 Feb 24 17:32 uhid crw-rw---- 1 root root 10, 223 Feb 24 17:35 uinput crw-rw---- 1 root root 1, 9 Feb 24 17:35 urandom crw-rw---- 1 root root 7, 0 Feb 24 17:35 vcs crw-rw---- 1 root root 7, 1 Feb 24 17:35 vcs1 crw-rw---- 1 root root 7, 2 Feb 24 17:35 vcs2 crw-rw---- 1 root root 7, 3 Feb 24 17:35 vcs3 crw-rw---- 1 root root 7, 4 Feb 24 17:35 vcs4 crw-rw---- 1 root root 7, 5 Feb 24 17:35 vcs5 crw-rw---- 1 root root 7, 6 Feb 24 17:35 vcs6 crw-rw---- 1 root root 7, 7 Feb 24 17:35 vcs7 crw-rw---- 1 root root 7, 128 Feb 24 17:35 vcsa crw-rw---- 1 root root 7, 129 Feb 24 17:35 vcsa1 crw-rw---- 1 root root 7, 130 Feb 24 17:35 vcsa2 crw-rw---- 1 root root 7, 131 Feb 24 17:35 vcsa3 crw-rw---- 1 root root 7, 132 Feb 24 17:35 vcsa4 crw-rw---- 1 root root 7, 133 Feb 24 17:35 vcsa5 crw-rw---- 1 root root 7, 134 Feb 24 17:35 vcsa6 crw-rw---- 1 root root 7, 135 Feb 24 17:35 vcsa7 drwxr-xr-x 2 root root 60 Feb 24 17:00 vfio crw-rw---- 1 root root 10, 63 Feb 24 17:35 vga_arbiter drwxr-xr-x 2 root root 220 Feb 24 16:59 vg_s1200 crw------- 1 root root 10, 137 Feb 24 17:32 vhci crw-rw---- 1 root root 10, 238 Feb 24 17:35 vhost-net crw-rw---- 1 root root 1, 5 Feb 24 17:35 zero -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1549361 Title: /dev/kvm has wrong permissions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1549361/+subscriptions -- ubuntu-bugs mailing list 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