Created attachment 95344
requested diagnostics for a bug report

I'm dealing with problem that in some cases, randomly, udisks-daemon can take 100% of one CPU core and stops only when I kill it. I must admit also that my system battery is below 3V and I haven't changed it yet so there can be some connection.

I also found here: https://forums.gentoo.org/viewtopic-p-6472936.html#6472936
that it can be a problem with locale.

There is a post which suggests that the problem occurs when user is not having quote mark at the first line of the locale:

[root@linux mk]# locale
LANG=pl_PL.UTF-8 << missing "quote" mark
LC_CTYPE="pl_PL.UTF-8"
LC_NUMERIC="pl_PL.UTF-8"
[...]


Messages which appeared in journalctl when udisks-daemon hanged up:

lut 18 09:30:51 linux udisks-daemon[301]: **** Refreshing ATA SMART data for /sys/devices/pci0000:00/0000:00:08.0/ata1/host0/target0:0:0/0:0:0:0/block/sda
lut 18 09:30:52 linux udisks-daemon[301]: helper(pid 1868): launched job udisks-helper-ata-smart-collect on /dev/sda
lut 18 09:30:52 linux udisks-daemon[301]: **** Refreshing ATA SMART data for /sys/devices/pci0000:00/0000:00:08.1/ata3/host2/target2:0:0/2:0:0:0/block/sdb
lut 18 09:30:52 linux udisks-daemon[301]: helper(pid 1869): launched job udisks-helper-ata-smart-collect on /dev/sdb
lut 18 09:30:52 linux udisks-daemon[301]: helper(pid 1868): completed with exit code 0
lut 18 09:30:52 linux udisks-daemon[301]: **** EMITTING CHANGED for /sys/devices/pci0000:00/0000:00:08.0/ata1/host0/target0:0:0/0:0:0:0/block/sda

I mounted and unmnounted /dev/sdb thinking this could cause the problem:

lut 18 09:35:14 linux su[2030]: (to root) mk on pts/0
lut 18 09:35:14 linux su[2030]: pam_unix(su:session): session opened for user root by mk(uid=1000)
lut 18 09:35:20 linux kernel: XFS (sdb5): Mounting Filesystem
lut 18 09:35:20 linux udisks-daemon[301]: **** /proc/self/mountinfo changed
lut 18 09:35:20 linux udisks-daemon[301]: **** MOUNTED /sys/devices/pci0000:00/0000:00:08.1/ata3/host2/target2:0:0/2:0:0:0/block/sdb/sdb5
lut 18 09:35:20 linux udisks-daemon[301]: **** CHANGING /sys/devices/pci0000:00/0000:00:08.1/ata3/host2/target2:0:0/2:0:0:0/block/sdb/sdb5
lut 18 09:35:20 linux udisks-daemon[301]: **** UPDATING /sys/devices/pci0000:00/0000:00:08.1/ata3/host2/target2:0:0/2:0:0:0/block/sdb/sdb5
lut 18 09:35:20 linux udisks-daemon[301]: **** EMITTING CHANGED for /sys/devices/pci0000:00/0000:00:08.1/ata3/host2/target2:0:0/2:0:0:0/block/sdb/sdb5
lut 18 09:35:20 linux udisks-daemon[301]: **** CHANGED /sys/devices/pci0000:00/0000:00:08.1/ata3/host2/target2:0:0/2:0:0:0/block/sdb/sdb5
lut 18 09:35:20 linux kernel: XFS (sdb5): Ending clean mount

Then I killed udisks-daemon:

lut 18 09:35:27 linux udisks-daemon[301]: **** /proc/self/mountinfo changed
lut 18 09:35:27 linux udisks-daemon[301]: **** UNMOUNTED /sys/devices/pci0000:00/0000:00:08.1/ata3/host2/target2:0:0/2:0:0:0/block/sdb/sdb5
lut 18 09:35:27 linux udisks-daemon[301]: **** CHANGING /sys/devices/pci0000:00/0000:00:08.1/ata3/host2/target2:0:0/2:0:0:0/block/sdb/sdb5
lut 18 09:35:27 linux udisks-daemon[301]: **** UPDATING /sys/devices/pci0000:00/0000:00:08.1/ata3/host2/target2:0:0/2:0:0:0/block/sdb/sdb5
lut 18 09:35:27 linux udisks-daemon[301]: **** EMITTING CHANGED for /sys/devices/pci0000:00/0000:00:08.1/ata3/host2/target2:0:0/2:0:0:0/block/sdb/sdb5
lut 18 09:35:27 linux udisks-daemon[301]: **** CHANGED /sys/devices/pci0000:00/0000:00:08.1/ata3/host2/target2:0:0/2:0:0:0/block/sdb/sdb5
lut 18 09:35:27 linux org.gtk.Private.UDisks2VolumeMonitor[407]: ### debug: emit_signal: 0x1447470
lut 18 09:35:27 linux org.gtk.Private.UDisks2VolumeMonitor[407]: ### debug: emit_signal: 0x149b0f0
lut 18 09:35:27 linux org.gtk.Private.UDisks2VolumeMonitor[407]: ### debug: emit_signal: 0x149b0f0


Steps to reproduce:

Unknown. It happens even if PC is playing music and nothing is done on it.

Here's more or less the same report for Archlinux: https://bugs.archlinux.org/task/38952