unmounting NTFS causes mount.ntfs process to get stuck in eternal kernel deep sleep
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| linux (Ubuntu) |
Confirmed
|
High
|
Unassigned | ||
| udisks2 (Ubuntu) |
Fix Released
|
High
|
Martin Pitt | ||
Bug Description
Since Mid-November the udisks2 test (https:/
This can be reproduced with
sudo apt install ntfs-3g
sudo modprobe scsi_debug
# check dmesg which drive this created; e. g. /dev/sda
sudo mkntfs -F /dev/sda
sudo mount /dev/sda /mnt
Now you have a process which is happy:
root 12821 0.0 0.0 15272 1948 ? Ss 15:49 0:00 /sbin/mount.ntfs /dev/sda /mnt -o rw
You can work with /mnt, edit files, etc. But now unmount:
sudo umount /mnt
This never returns, and the process goes into uninterruptible kernel sleep ("D"):
root 12928 0.0 0.0 15272 1948 ? Ds 15:55 0:00 /sbin/mount.ntfs /dev/sda /mnt -o rw
The strace for the umount until the hang is
ubuntu@
Process 12928 attached
15:56:17.938299 read(4, "0\0\0\
15:56:22.338931 read(4, "(\0\0\
15:56:22.339637 sendto(5, "<29>Dec 3 15:56:22 ntfs-3g[12928]: Unmounting /dev/sda ()\n", 59, MSG_NOSIGNAL, NULL, 0) = 59
15:56:22.340509 fsync(3) = 0
15:56:22.341188 fcntl(3, F_SETLK, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
15:56:22.341759 close(3
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ntfs-3g 1:2013.
ProcVersionSign
Uname: Linux 3.16.0-25-generic x86_64
ApportVersion: 2.15-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Dec 3 15:48:12 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-11-20 (13 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141119)
SourcePackage: ntfs-3g
UpgradeStatus: No upgrade log present (probably fresh install)
| Martin Pitt (pitti) wrote | #1 |
| Martin Pitt (pitti) wrote | #2 |
| Martin Pitt (pitti) wrote | #3 |
| affects: | ntfs-3g (Ubuntu) → systemd (Ubuntu) |
| Changed in systemd (Ubuntu): | |
| assignee: | nobody → Martin Pitt (pitti) |
| status: | New → Triaged |
| summary: |
- [regression] unmounting NTFS causes mount.ntfs process to get stuck in - eternal kernel deep sleep + [udev regression] unmounting NTFS causes mount.ntfs process to get stuck + in eternal kernel deep sleep |
| Changed in systemd (Ubuntu): | |
| importance: | Undecided → High |
| Martin Pitt (pitti) wrote Re: [udev regression] unmounting NTFS causes mount.ntfs process to get stuck in eternal kernel deep sleep | #4 |
| Martin Pitt (pitti) wrote | #5 |
| Martin Pitt (pitti) wrote | #6 |
| Martin Pitt (pitti) wrote | #7 |
| Martin Pitt (pitti) wrote | #8 |
| Martin Pitt (pitti) wrote | #9 |
| Martin Pitt (pitti) wrote | #10 |
| summary: |
- [udev regression] unmounting NTFS causes mount.ntfs process to get stuck - in eternal kernel deep sleep + unmounting NTFS causes mount.ntfs process to get stuck in eternal kernel + deep sleep |
| Martin Pitt (pitti) wrote | #11 |
| Changed in systemd (Ubuntu): | |
| milestone: | none → ubuntu-15.01 |
| status: | Triaged → In Progress |
| Martin Pitt (pitti) wrote | #12 |
| Martin Pitt (pitti) wrote | #13 |
| Changed in systemd (Ubuntu): | |
| status: | In Progress → Fix Committed |
| Launchpad Janitor (janitor) wrote | #14 |
| Changed in systemd (Ubuntu): | |
| status: | Fix Committed → Fix Released |
| Martin Pitt (pitti) wrote | #15 |
| Changed in systemd (Ubuntu): | |
| status: | Fix Released → In Progress |
| Martin Pitt (pitti) wrote | #16 |
| Martin Pitt (pitti) wrote | #17 |
| affects: | systemd (Ubuntu) → udisks2 (Ubuntu) |
| Changed in udisks2 (Ubuntu): | |
| status: | In Progress → Fix Committed |
| Phillip Susi (psusi) wrote | #18 |
| Martin Pitt (pitti) wrote | #19 |
| Phillip Susi (psusi) wrote | #20 |
| Changed in udisks2 (Ubuntu): | |
| status: | Fix Committed → In Progress |
| Martin Pitt (pitti) wrote | #21 |
| Changed in udisks2 (Ubuntu): | |
| status: | In Progress → Fix Committed |
| Launchpad Janitor (janitor) wrote | #22 |
| Changed in udisks2 (Ubuntu): | |
| status: | Fix Committed → Fix Released |
| Brad Figg (brad-figg) wrote Missing required logs. | #23 |
| Changed in linux (Ubuntu): | |
| status: | New → Incomplete |
| Changed in linux (Ubuntu): | |
| status: | Incomplete → Confirmed |
| tags: | added: bot-stop-nagging |
| Changed in linux (Ubuntu): | |
| importance: | Undecided → High |
| Martin Pitt (pitti) wrote | #24 |
| Changed in udisks2 (Ubuntu): | |
| milestone: | ubuntu-15.01 → ubuntu-16.03 |
| status: | Fix Released → In Progress |
| Martin Pitt (pitti) wrote | #25 |
| Changed in udisks2 (Ubuntu): | |
| milestone: | ubuntu-16.03 → none |
| status: | In Progress → Fix Released |
| Martin Pitt (pitti) wrote | #26 |
| Martin Pitt (pitti) wrote | #27 |
- ntfs-3g itself did not change since utopic.
- The hang happens with utopic's 3.16.0-23-generic and the previous 3.16.0-24-generic kernel too, so not a kernel regression.
- The hang happens with libc{6,-bin} 2.19-10ubuntu2, so not a glibc regression
- The hang happens with systemd+udev 215-5ubuntu2 (which we had from Nov 03 on), so not an udev regression either.