partprobe is broken on empty loopback device

A fix is available upstream: https://<email address hidden>/T/

It is expected to be released in 2 weeks

> It is expected to be released in 2 weeks

Thanks! Is there anywhere we can get access to a proposed/pre-release package with the fix inside to verify that it fixes the issue in our CI?

This bug is awaiting verification that the linux/5.15.0-100.110 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux' to 'verification-done-jammy-linux'. If the problem still exists, change the tag 'verification-needed-jammy-linux' to 'verification-failed-jammy-linux'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux/6.5.0-25.25 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-mantic-linux' to 'verification-done-mantic-linux'. If the problem still exists, change the tag 'verification-needed-mantic-linux' to 'verification-failed-mantic-linux'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

Allison Karlitskaya (desrt) sorry, just saw your question now.
You can install the new version from -proposed 5.15.0-100.110.

I tested it in a vm following the instruction from the description and the error is not reproducible anymore. I'll mark this as verified so that we can release the kernel

This bug is awaiting verification that the linux-nvidia-tegra/5.15.0-1022.22 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-nvidia-tegra' to 'verification-done-jammy-linux-nvidia-tegra'. If the problem still exists, change the tag 'verification-needed-jammy-linux-nvidia-tegra' to 'verification-failed-jammy-linux-nvidia-tegra'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug was fixed in the package linux - 5.15.0-97.107

---------------
linux (5.15.0-97.107) jammy; urgency=medium

  * jammy/linux: 5.15.0-97.107 -proposed tracker (LP: #2052600)

  * Packaging resync (LP: #1786013)
    - [Packaging] update annotations scripts

  * partproke is broken on empty loopback device (LP: #2049689)
    - block: Move checking GENHD_FL_NO_PART to bdev_add_partition()

  * CVE-2023-51781
    - appletalk: Fix Use-After-Free in atalk_ioctl

  * CVE-2023-51780
    - atm: Fix Use-After-Free in do_vcc_ioctl

  * CVE-2023-6915
    - ida: Fix crash in ida_free when the bitmap is empty

  * CVE-2024-0565
    - smb: client: fix OOB in receive_encrypted_standard()

  * CVE-2024-0646
    - net: tls, update curr on splice as well

 -- Manuel Diewald <email address hidden> Wed, 07 Feb 2024 11:17:02 +0100

This bug is awaiting verification that the linux-gcp-tcpx/5.15.0-1005.5 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-gcp-tcpx' to 'verification-done-focal-linux-gcp-tcpx'. If the problem still exists, change the tag 'verification-needed-focal-linux-gcp-tcpx' to 'verification-failed-focal-linux-gcp-tcpx'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug was fixed in the package linux - 6.5.0-21.21

---------------
linux (6.5.0-21.21) mantic; urgency=medium

  * mantic/linux: 6.5.0-21.21 -proposed tracker (LP: #2052603)

  * The display becomes frozen after some time when a HDMI device is connected.
    (LP: #2049027)
    - drm/i915/dmc: Don't enable any pipe DMC events

  * partproke is broken on empty loopback device (LP: #2049689)
    - block: Move checking GENHD_FL_NO_PART to bdev_add_partition()

  * CVE-2023-51781
    - appletalk: Fix Use-After-Free in atalk_ioctl

  * CVE-2023-51780
    - atm: Fix Use-After-Free in do_vcc_ioctl

  * CVE-2023-6915
    - ida: Fix crash in ida_free when the bitmap is empty

  * CVE-2024-0565
    - smb: client: fix OOB in receive_encrypted_standard()

  * CVE-2024-0582
    - io_uring: enable io_mem_alloc/free to be used in other parts
    - io_uring/kbuf: defer release of mapped buffer rings

  * CVE-2024-0646
    - net: tls, update curr on splice as well

 -- Manuel Diewald <email address hidden> Wed, 07 Feb 2024 13:06:01 +0100

This bug is awaiting verification that the linux-gke/5.15.0-1051.56 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-gke' to 'verification-done-jammy-linux-gke'. If the problem still exists, change the tag 'verification-needed-jammy-linux-gke' to 'verification-failed-jammy-linux-gke'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-lowlatency/6.5.0-21.21.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-mantic-linux-lowlatency' to 'verification-done-mantic-linux-lowlatency'. If the problem still exists, change the tag 'verification-needed-mantic-linux-lowlatency' to 'verification-failed-mantic-linux-lowlatency'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-starfive-6.5/6.5.0-1008.9~22.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-starfive-6.5' to 'verification-done-jammy-linux-starfive-6.5'. If the problem still exists, change the tag 'verification-needed-jammy-linux-starfive-6.5' to 'verification-failed-jammy-linux-starfive-6.5'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-aws/5.15.0-1055.60 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-aws' to 'verification-done-jammy-linux-aws'. If the problem still exists, change the tag 'verification-needed-jammy-linux-aws' to 'verification-failed-jammy-linux-aws'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-aws-fips/5.15.0-1055.60+fips1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-aws-fips' to 'verification-done-jammy-linux-aws-fips'. If the problem still exists, change the tag 'verification-needed-jammy-linux-aws-fips' to 'verification-failed-jammy-linux-aws-fips'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-ibm-gt-fips/5.15.0-1055.58+fips1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-ibm-gt-fips' to 'verification-done-jammy-linux-ibm-gt-fips'. If the problem still exists, change the tag 'verification-needed-jammy-linux-ibm-gt-fips' to 'verification-failed-jammy-linux-ibm-gt-fips'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-mtk/5.15.0-1030.34 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-mtk' to 'verification-done-jammy-linux-mtk'. If the problem still exists, change the tag 'verification-needed-jammy-linux-mtk' to 'verification-failed-jammy-linux-mtk'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

Kernel 5.15.0-97.107 resolves the issue for the test case documented in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2052842

However, I still see a regression with the following test case:

$ fallocate -l 1G /tmp/blob
$ sudo losetup $LOOPDEV /tmp/blob
$ sudo /usr/sbin/parted -s -m -a optimal $LOOPDEV -- unit KiB mklabel gpt mkpart primary 0% 100%
Error: Partition(s) 1 on /dev/loop3 have been written, but we have been unable to inform the kernel of the change, probably because it/they are in use. As a result, the old partition(s) will remain in use. You should reboot now before making further changes.

Expected results: parted return code is 0, partition is available at ${LOOPDEV}p1

Actual results: parted return code is 1, partition is not available at ${LOOPDEV}p1

On Monday we're supposed to release this. This feedback would have been crucial 1-2 weeks before.
Plus, we already started the next releases..

I'll try to prioritize this, but it's very late to be included in the next releases (I'll probably respin)

Sorry, I verified my original test case when 5.15.0-97.107 was made available in jammy-updates a few days ago, but this new failure was only caught by a CI job recently after new Ubuntu images became available.

It would be good to have a second bug report about the new finding. In some way this is now working as designed but not as expected. Basically loop block devices set a generic flag to disable partition support (/sys/block/loop?/capabilities -> 0x200 GENHD_FL_NO_PART). There is a change in 5.19 which stops disabling partition support and just prevents automatic partition scanning but that needs adjustments.
In the meantime there should be a work-around by using kpartx (kpartx -a /dev/loop? -> /dev/mapper/loop?p...)

Ok, so I created bug #2056143 for the fresh issue.

Thank you Stefan!

This bug is awaiting verification that the linux-aws/6.5.0-1015.15 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-mantic-linux-aws' to 'verification-done-mantic-linux-aws'. If the problem still exists, change the tag 'verification-needed-mantic-linux-aws' to 'verification-failed-mantic-linux-aws'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-azure/6.5.0-1016.16 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-mantic-linux-azure' to 'verification-done-mantic-linux-azure'. If the problem still exists, change the tag 'verification-needed-mantic-linux-azure' to 'verification-failed-mantic-linux-azure'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-hwe-6.5/6.5.0-25.25~22.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-hwe-6.5' to 'verification-done-jammy-linux-hwe-6.5'. If the problem still exists, change the tag 'verification-needed-jammy-linux-hwe-6.5' to 'verification-failed-jammy-linux-hwe-6.5'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-kvm/5.15.0-1052.57 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-kvm' to 'verification-done-jammy-linux-kvm'. If the problem still exists, change the tag 'verification-needed-jammy-linux-kvm' to 'verification-failed-jammy-linux-kvm'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-intel-iotg/5.15.0-1050.56 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-intel-iotg' to 'verification-done-jammy-linux-intel-iotg'. If the problem still exists, change the tag 'verification-needed-jammy-linux-intel-iotg' to 'verification-failed-jammy-linux-intel-iotg'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-oracle/5.15.0-1053.59 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-oracle' to 'verification-done-jammy-linux-oracle'. If the problem still exists, change the tag 'verification-needed-jammy-linux-oracle' to 'verification-failed-jammy-linux-oracle'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-raspi/5.15.0-1048.51 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-raspi' to 'verification-done-jammy-linux-raspi'. If the problem still exists, change the tag 'verification-needed-jammy-linux-raspi' to 'verification-failed-jammy-linux-raspi'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-gcp-fips/5.15.0-1055.63+fips2 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-gcp-fips' to 'verification-done-jammy-linux-gcp-fips'. If the problem still exists, change the tag 'verification-needed-jammy-linux-gcp-fips' to 'verification-failed-jammy-linux-gcp-fips'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-nvidia-6.5/6.5.0-1014.14 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-nvidia-6.5' to 'verification-done-jammy-linux-nvidia-6.5'. If the problem still exists, change the tag 'verification-needed-jammy-linux-nvidia-6.5' to 'verification-failed-jammy-linux-nvidia-6.5'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-nvidia-tegra-5.15/5.15.0-1023.23~20.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-nvidia-tegra-5.15' to 'verification-done-focal-linux-nvidia-tegra-5.15'. If the problem still exists, change the tag 'verification-needed-focal-linux-nvidia-tegra-5.15' to 'verification-failed-focal-linux-nvidia-tegra-5.15'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-nvidia-tegra-igx/5.15.0-1010.10 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-nvidia-tegra-igx' to 'verification-done-jammy-linux-nvidia-tegra-igx'. If the problem still exists, change the tag 'verification-needed-jammy-linux-nvidia-tegra-igx' to 'verification-failed-jammy-linux-nvidia-tegra-igx'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-xilinx-zynqmp/5.15.0-1029.33 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-xilinx-zynqmp' to 'verification-done-jammy-linux-xilinx-zynqmp'. If the problem still exists, change the tag 'verification-needed-jammy-linux-xilinx-zynqmp' to 'verification-failed-jammy-linux-xilinx-zynqmp'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!