user space process as in parted or fdisk or update-grub2 that read partition tables freeze on my system:
/dev/sda/ GPT disk with efi, swap and ubuntu artful partition
/dev/sdb old style partition table with one ext4 partition
/dev/sdc GPT disk with efi partition, windows 10
I.e. if I run as root :
# fdisk -l
Disk /dev/sda: 232,9 GiB, 250059350016 bytes, 488397168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 56FF6AB0-076F-483C-890F-EC4B4FAF6313
Device Start End Sectors Size Type
/dev/sda1 2048 2000895 1998848 976M EFI System
/dev/sda2 2000896 10000383 7999488 3,8G Linux swap
/dev/sda3 10000384 488396799 478396416 228,1G Linux filesystem
Disk /dev/sdb: 489,1 GiB, 525112713216 bytes, 1025610768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x2f11f9c4
Device Boot Start End Sectors Size Id Type
/dev/sdb1 2048 1025609727 1025607680 489G 83 Linux
<...process hangs here forever...>
With gdb I stepped through fdisk -l and saw that the call to open ('dev/sdc'..) never returns.
--
ApportVersion: 2.20.7-0ubuntu3.6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/pcmC0D3p: andreas 1807 F...m pulseaudio
/dev/snd/controlC0: andreas 1807 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 17.10
HibernationDevice: RESUME=UUID=8a7a6077-0a3e-4641-8f15-bd6f09826510
InstallationDate: Installed on 2017-12-26 (1 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
IwConfig:
lo no wireless extensions.
enp8s0 no wireless extensions.
enp12s0 no wireless extensions.
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
Package: linux-image-4.13.0-21-generic 4.13.0-21.24
PackageArchitecture: amd64
ProcFB:
0 radeondrmfb
1 astdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-21-generic.efi.signed root=UUID=4f18ad67-a4f0-4e03-b061-66615751538e ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.13.0-21.24-generic 4.13.13
RelatedPackageVersions:
linux-restricted-modules-4.13.0-21-generic N/A
linux-backports-modules-4.13.0-21-generic N/A
linux-firmware 1.169.1
RfKill:
Tags: artful
Uname: Linux 4.13.0-21-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 12/09/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.80
dmi.board.name: EP2C602
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.80:bd12/09/2013:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnEP2C602:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To Be Filled By O.E.M.
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1740309
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.