Udisk related kernel panic upon boot

I am seeing these lines in the journalctl and my system is behaving very weird, slow boot process:

Aug 20 19:30:58 M1 kernel: INFO: task udisksd:16724 blocked for more than 120 seconds.
Aug 20 19:30:58 M1 kernel: Tainted: P OE 3.19.0-26-generic #28-Ubuntu
Aug 20 19:30:58 M1 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 20 19:30:58 M1 kernel: udisksd D ffff880199a6bac8 0 16724 1 0x00000004
Aug 20 19:30:58 M1 kernel: ffff880199a6bac8 ffff8801ab4444b0 0000000000014240 ffff880199a6bfd8
Aug 20 19:30:58 M1 kernel: 0000000000014240 ffffffff81c1a580 ffff8801ab4444b0 0000000000800000
Aug 20 19:30:58 M1 kernel: ffff8801b76b1398 ffff8801b76b139c ffff8801ab4444b0 00000000ffffffff
Aug 20 19:30:58 M1 kernel: Call Trace:
Aug 20 19:30:58 M1 kernel: [<ffffffff817c72d9>] schedule_preempt_disabled+0x29/0x70
Aug 20 19:30:58 M1 kernel: [<ffffffff817c9195>] __mutex_lock_slowpath+0x95/0x100
Aug 20 19:30:58 M1 kernel: [<ffffffff817c9216>] ? mutex_lock+0x16/0x40
Aug 20 19:30:58 M1 kernel: [<ffffffff817c9223>] mutex_lock+0x23/0x40
Aug 20 19:30:58 M1 kernel: [<ffffffff8122ef03>] __blkdev_get+0x63/0x490
Aug 20 19:30:58 M1 kernel: [<ffffffff8122f371>] blkdev_get+0x41/0x390
Aug 20 19:30:58 M1 kernel: [<ffffffff8122f720>] ? blkdev_get_by_dev+0x60/0x60
Aug 20 19:30:58 M1 kernel: [<ffffffff8122f77f>] blkdev_open+0x5f/0x90
Aug 20 19:30:58 M1 kernel: [<ffffffff811f2392>] do_dentry_open+0x1d2/0x330
Aug 20 19:30:58 M1 kernel: [<ffffffff811f2659>] vfs_open+0x49/0x50
Aug 20 19:30:58 M1 kernel: [<ffffffff812027c7>] do_last+0x247/0x12c0
Aug 20 19:30:58 M1 kernel: [<ffffffff81205830>] path_openat+0x80/0x5f0
Aug 20 19:30:58 M1 kernel: [<ffffffff811a822c>] ? tlb_finish_mmu+0x1c/0x50
Aug 20 19:30:58 M1 kernel: [<ffffffff81206fba>] do_filp_open+0x3a/0xb0
Aug 20 19:30:58 M1 kernel: [<ffffffff81213d47>] ? __alloc_fd+0xa7/0x130
Aug 20 19:30:58 M1 kernel: [<ffffffff811f3faa>] do_sys_open+0x12a/0x280
Aug 20 19:30:58 M1 kernel: [<ffffffff811f411e>] SyS_open+0x1e/0x20
Aug 20 19:30:58 M1 kernel: [<ffffffff817cb70d>] system_call_fastpath+0x16/0x1b
Aug 20 19:31:18 M1 org.gnome.zeitgeist.SimpleIndexer[16462]: ** (zeitgeist-fts:17025): WARNING **: Unable to get info on application://gnome-terminal-server.desktop
Aug 20 19:31:20 M1 systemd[1]: udisks2.service still around after final SIGKILL. Entering failed mode.
Aug 20 19:31:20 M1 systemd[1]: Failed to start Disk Manager.
Aug 20 19:31:20 M1 systemd[1]: Unit udisks2.service entered failed state.
Aug 20 19:31:20 M1 systemd[1]: udisks2.service failed.

Any ideas how to fix the above?

Thanks
---
ApportVersion: 2.17.2-0ubuntu1.4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: michael-heuberger 6343 F.... pulseaudio
 /dev/snd/controlC2: michael-heuberger 6343 F.... pulseaudio
 /dev/snd/controlC0: michael-heuberger 6343 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 15.04
HibernationDevice: RESUME=UUID=b0b47183-895a-4f27-bb25-40bd23028028
InstallationDate: Installed on 2014-10-31 (313 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
MachineType: System manufacturer System Product Name
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcFB:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-28-generic root=UUID=b5b38333-3694-4441-8a13-50bf4dbf2f41 ro quiet
ProcVersionSignature: Ubuntu 3.19.0-28.30-generic 3.19.8-ckt5
RelatedPackageVersions:
 linux-restricted-modules-3.19.0-28-generic N/A
 linux-backports-modules-3.19.0-28-generic N/A
 linux-firmware 1.143.3
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: yes
  Hard blocked: no
Tags: vivid
Uname: Linux 3.19.0-28-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo wireshark www-data
_MarkForUpload: True
dmi.bios.date: 08/06/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0803
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P6X58D-E
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0803:bd08/06/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP6X58D-E:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
---
ApportVersion: 2.17.2-0ubuntu1.4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: michael-heuberger 6343 F.... pulseaudio
 /dev/snd/controlC2: michael-heuberger 6343 F.... pulseaudio
 /dev/snd/controlC0: michael-heuberger 6343 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 15.04
HibernationDevice: RESUME=UUID=b0b47183-895a-4f27-bb25-40bd23028028
InstallationDate: Installed on 2014-10-31 (313 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
MachineType: System manufacturer System Product Name
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcFB:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-28-generic root=UUID=b5b38333-3694-4441-8a13-50bf4dbf2f41 ro quiet
ProcVersionSignature: Ubuntu 3.19.0-28.30-generic 3.19.8-ckt5
RelatedPackageVersions:
 linux-restricted-modules-3.19.0-28-generic N/A
 linux-backports-modules-3.19.0-28-generic N/A
 linux-firmware 1.143.3
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: yes
  Hard blocked: no
Tags: vivid
Uname: Linux 3.19.0-28-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo wireshark www-data
_MarkForUpload: True
dmi.bios.date: 08/06/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0803
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P6X58D-E
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0803:bd08/06/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP6X58D-E:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer