Allow fuse user namespace mounts by default in xenial

Bug #1634964 reported by Seth Forshee on 2016-10-19
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
High
Seth Forshee
Xenial
High
Seth Forshee

Bug Description

This is a requirement for supporting snaps within lxd containers in xenial. It is already allowed in yakkety, so enablement in xenial consists of backporting some changes and changing the fuse userns_mounts parameter to be enabled by default.

Seth Forshee (sforshee) on 2016-10-19
Changed in linux (Ubuntu Xenial):
assignee: nobody → Seth Forshee (sforshee)
importance: Undecided → High
status: New → In Progress
Changed in linux (Ubuntu):
status: In Progress → Fix Released
description: updated
Luis Henriques (henrix) on 2016-11-08
Changed in linux (Ubuntu Xenial):
status: In Progress → Fix Committed
Luis Henriques (henrix) wrote :

This bug is awaiting verification that the 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-xenial' to 'verification-done-xenial'.

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!

tags: added: verification-needed-xenial
Seth Forshee (sforshee) wrote :

Verified in the proposed xenial kernel.

tags: added: verification-done-xenial
removed: verification-needed-xenial
Luis Henriques (henrix) on 2016-11-23
Changed in linux (Ubuntu Xenial):
status: Fix Committed → Triaged

The verification of the Stable Release Update for linux-lts-xenial has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

Launchpad Janitor (janitor) wrote :
Download full text (22.5 KiB)

This bug was fixed in the package linux - 4.4.0-51.72

---------------
linux (4.4.0-51.72) xenial; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1644611

  * 4.4.0-1037-snapdragon #41: kernel panic on boot (LP: #1644596)
    - Revert "dma-mapping: introduce the DMA_ATTR_NO_WARN attribute"
    - Revert "powerpc: implement the DMA_ATTR_NO_WARN attribute"
    - Revert "nvme: use the DMA_ATTR_NO_WARN attribute"

linux (4.4.0-50.71) xenial; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1644169

  * xenial 4.4.0-49.70 kernel breaks LXD userspace (LP: #1644165)
    - Revert "UBUNTU: SAUCE: (namespace) fuse: Allow user namespace mounts by
      default"
    - Revert "UBUNTU: SAUCE: (namespace) fs: Don't remove suid for CAP_FSETID for
      userns root"
    - Revert "(namespace) Revert "UBUNTU: SAUCE: fs: Don't remove suid for
      CAP_FSETID in s_user_ns""
    - Revert "UBUNTU: SAUCE: (namespace) fs: Allow superblock owner to change
      ownership of inodes"
    - Revert "(namespace) Revert "UBUNTU: SAUCE: fs: Allow superblock owner to
      change ownership of inodes with unmappable ids""
    - Revert "UBUNTU: SAUCE: (namespace) security/integrity: Harden against
      malformed xattrs"
    - Revert "(namespace) Revert "UBUNTU: SAUCE: ima/evm: Allow root in s_user_ns
      to set xattrs""
    - Revert "(namespace) dquot: For now explicitly don't support filesystems
      outside of init_user_ns"
    - Revert "(namespace) quota: Handle quota data stored in s_user_ns in
      quota_setxquota"
    - Revert "(namespace) quota: Ensure qids map to the filesystem"
    - Revert "(namespace) Revert "UBUNTU: SAUCE: quota: Convert ids relative to
      s_user_ns""
    - Revert "(namespace) Revert "UBUNTU: SAUCE: quota: Require that qids passed
      to dqget() be valid and map into s_user_ns""
    - Revert "(namespace) vfs: Don't create inodes with a uid or gid unknown to
      the vfs"
    - Revert "(namespace) vfs: Don't modify inodes with a uid or gid unknown to
      the vfs"
    - Revert "UBUNTU: SAUCE: (namespace) fuse: Translate ids in posix acl xattrs"
    - Revert "UBUNTU: SAUCE: (namespace) posix_acl: Export
      posix_acl_fix_xattr_userns() to modules"
    - Revert "(namespace) vfs: Verify acls are valid within superblock's
      s_user_ns."
    - Revert "(namespace) Revert "UBUNTU: SAUCE: fs: Update posix_acl support to
      handle user namespace mounts""
    - Revert "(namespace) fs: Refuse uid/gid changes which don't map into
      s_user_ns"
    - Revert "(namespace) Revert "UBUNTU: SAUCE: fs: Refuse uid/gid changes which
      don't map into s_user_ns""
    - Revert "(namespace) mnt: Move the FS_USERNS_MOUNT check into sget_userns"

linux (4.4.0-49.70) xenial; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1640921

  * Infiniband driver (kernel module) needed for Azure (LP: #1641139)
    - SAUCE: RDMA Infiniband for Windows Azure
    - [Config] CONFIG_HYPERV_INFINIBAND_ND=m
    - SAUCE: Makefile RDMA infiniband driver for Windows Azure
    - [Config] Add hv_network_direct.ko to generic inclusion list
    - SAUCE: RDMA Infiniband for Windows Azure is dependent on amd64...

Changed in linux (Ubuntu Xenial):
status: Triaged → Fix Released
Seth Forshee (sforshee) wrote :

Not actually released yet since the patches were reverted.

Changed in linux (Ubuntu Xenial):
status: Fix Released → Confirmed
Luis Henriques (henrix) on 2016-12-15
Changed in linux (Ubuntu Xenial):
status: Confirmed → Fix Committed
Luis Henriques (henrix) wrote :

This bug is awaiting verification that the 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-xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed-xenial'.

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!

tags: added: verification-needed-xenial
removed: verification-done-xenial
Seth Forshee (sforshee) wrote :

Verified in linux 4.4.0-58.79.

tags: added: verification-done-xenial
removed: verification-needed-xenial
Launchpad Janitor (janitor) wrote :
Download full text (5.9 KiB)

This bug was fixed in the package linux - 4.4.0-59.80

---------------
linux (4.4.0-59.80) xenial; urgency=low

  [ John Donnelly ]

  * Release Tracking Bug
    - LP: #1654282

  * [2.1.1] MAAS has nvme0n1 set as boot disk, curtin fails (LP: #1651602)
    - (fix) nvme: only require 1 interrupt vector, not 2+

linux (4.4.0-58.79) xenial; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1651402

  * Support ACPI probe for IIO sensor drivers from ST Micro (LP: #1650123)
    - SAUCE: iio: st_sensors: match sensors using ACPI handle
    - SAUCE: iio: st_accel: Support sensor i2c probe using acpi
    - SAUCE: iio: st_pressure: Support i2c probe using acpi
    - [Config] CONFIG_HTS221=m, CONFIG_HTS221_I2C=m, CONFIG_HTS221_SPI=m

  * Fix channel data parsing in ST Micro sensor IIO drivers (LP: #1650189)
    - SAUCE: iio: common: st_sensors: fix channel data parsing

  * ST Micro lng2dm 3-axis "femto" accelerometer support (LP: #1650112)
    - SAUCE: iio: st-accel: add support for lis2dh12
    - SAUCE: iio: st_sensors: support active-low interrupts
    - SAUCE: iio: accel: Add support for the h3lis331dl accelerometer
    - SAUCE: iio: st_sensors: verify interrupt event to status
    - SAUCE: iio: st_sensors: support open drain mode
    - SAUCE: iio:st_sensors: fix power regulator usage
    - SAUCE: iio: st_sensors: switch to a threaded interrupt
    - SAUCE: iio: accel: st_accel: Add lis3l02dq support
    - SAUCE: iio: st_sensors: fix scale configuration for h3lis331dl
    - SAUCE: iio: accel: st_accel: add support to lng2dm
    - SAUCE: iio: accel: st_accel: inline per-sensor data
    - SAUCE: Documentation: dt: iio: accel: add lng2dm sensor device binding

  * ST Micro hts221 relative humidity sensor support (LP: #1650116)
    - SAUCE: iio: humidity: add support to hts221 rh/temp combo device
    - SAUCE: Documentation: dt: iio: humidity: add hts221 sensor device binding
    - SAUCE: iio: humidity: remove
    - SAUCE: iio: humidity: Support acpi probe for hts211

  * crypto : tolerate new crypto hardware for z Systems (LP: #1644557)
    - s390/zcrypt: Introduce CEX6 toleration

  * Acer, Inc ID 5986:055a is useless after 14.04.2 installed. (LP: #1433906)
    - uvcvideo: uvc_scan_fallback() for webcams with broken chain

  * vmxnet3 driver could causes kernel panic with v4.4 if LRO enabled.
    (LP: #1650635)
    - vmxnet3: segCnt can be 1 for LRO packets

  * system freeze when swapping to encrypted swap partition (LP: #1647400)
    - mm, oom: rework oom detection
    - mm: throttle on IO only when there are too many dirty and writeback pages

  * Kernel Fixes to get TCMU File Backed Optical to work (LP: #1646204)
    - target/user: Use sense_reason_t in tcmu_queue_cmd_ring
    - target/user: Return an error if cmd data size is too large
    - target/user: Fix comments to not refer to data ring
    - SAUCE: (no-up) target/user: Fix use-after-free of tcmu_cmds if they are
      expired

  * CVE-2016-9756
    - KVM: x86: drop error recovery in em_jmp_far and em_ret_far

  * Dell Precision 5520 & 3520 freezes at login screent (LP: #1650054)
    - ACPI / blacklist: add _REV quirks for Dell Precision 5520 and 3520

  * CVE-2016-979...

Read more...

Changed in linux (Ubuntu Xenial):
status: Fix Committed → Fix Released
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