Public bug reported:
On a 12.04 system I've been in the process of creating some custom udev rules
for removable USB devices. In fact I'm writing a udev rule that calls
cryptsetup luksOpen --key-file=/media/uuid/of/my/keyfile/on/usb. The rule
actually unlocks an internal spinning disk, and then mounts the disk. I was
just about finished creating the udev rule, as it was correctly unlocking the
encrypted container and mounting the real ext4 partition as well. The only
thing left I had to do was add to the rule options for when the USB device is
removed, run umount and luksClose. In between this came udev-175-0ubuntu9.1. I
did not think that this would break my work, but it has. My basis for this is
that when I call cryptsetup luksOpen from the command line when the latest
update to udev is installed the commands work succesully. However, the same
commands ran from my udev rule do not work correctly with 75-0ubuntu9.1.
In my syslog I see errors about timeouts, and dozens of temporary-crypt-00253
type entries in /dev/mapper, when there should only be the one entry the udev
rule contains. (/dev/mapper/cryptstorage1) Additionally, The machine starts to
lockup, and becomes unresponsive. It's an Intel Corei5 with 16GB ram, doing
absolutely so heavy lifting, so there is no valid reason for the machine to be
unresponsive. Since 175-0ubuntu9.1, I've seen errors about semaphores, and
"check if the kernel has support for the aes-xts-plain64 cipher." This is
especially infuriating because the root partition is encrypted with the same
exact cipher, and the rest of the system works fine until my udev rule is
brought into play. I am using kmod aesni_intel, for what it's worth.
To test my thoery, I have manually rolled back to the previous version of udev
and libudev0, and then once again my udev rule works correctly again.
** Affects: udev (Ubuntu)
Importance: Undecided
Status: New
** Tags: custom rules udev
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https://bugs.launchpad.net/bugs/1033443
Title:
udev-175-0ubuntu9.1 broken when custom udev rules are present
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