linux <3.18: netlink notification is missing when an interface is modified

[Nicolas Dichtel]

The following upstream patches are missing:
ba9989069f4e rtnl/do_setlink(): notify when a netdev is modified
90c325e3bfe1 rtnl/do_setlink(): last arg is now a set of flags
1889b0e7efe8 rtnl/do_setlink(): set modified when IFLA_LINKMODE is updated
5d1180fcacc5 rtnl/do_setlink(): set modified when IFLA_TXQLEN is updated

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ba9989069f4e
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=90c325e3bfe1
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1889b0e7efe8
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d1180fcacc5

There is several ways to reproduce the problem. Here is an example:
ip monitor link&
ip link set eth1 txqueuelen 18

=> no notification

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1690094

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.

[Joseph Salisbury (jsalisbury)]

I'll take a look at backporting these patches.

[Joseph Salisbury (jsalisbury)]

I built a Trusty test kernel with the four requested commits. These commits also required mainline commit ba7d49b1f0f8e as a prereq.

The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1690094/trusty/

Can you test this kernel and see if it resolves this bug?

Note, with this test kernel, you need to install both the linux-image and linux-image-extra .deb packages.

[Nicolas Dichtel (nicolas-dichtel)]

My tests are ok, thank you.

[Kleber Sacilotto de Souza (kleber-souza)]

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-trusty' to 'verification-done-trusty'. If the problem still exists, change the tag 'verification-needed-trusty' to 'verification-failed-trusty'.

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!

[Kleber Sacilotto de Souza (kleber-souza)]

The patches for this bug seem to have introduced a regression on Trusty kernel, which is being investigated.

[Kleber Sacilotto de Souza (kleber-souza)]

These patches are being reverted from trusty kernel because of the regression introduced (see bug #1703401).

[Nicolas Dichtel (nicolas-dichtel)]

What is the plan?
Those patches will be applied again when bug #1703401 will be fixed?

[Kleber Sacilotto de Souza (kleber-souza)]

Hi,

Yes, the patch series will be re-applied once we fix the issue.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.13.0-125.174

---------------
linux (3.13.0-125.174) trusty; urgency=low

  * linux: 3.13.0-125.174 -proposed tracker (LP: #1703396)

  * NULL pointer dereference triggered by openvswitch autopkg testcase
    (LP: #1703401)
    - Revert "rtnl/do_setlink(): notify when a netdev is modified"
    - Revert "rtnl/do_setlink(): last arg is now a set of flags"
    - Revert "rtnl/do_setlink(): set modified when IFLA_LINKMODE is updated"
    - Revert "rtnl/do_setlink(): set modified when IFLA_TXQLEN is updated"
    - Revert "rtnetlink: provide api for getting and setting slave info"

linux (3.13.0-124.173) trusty; urgency=low

  * linux: 3.13.0-124.173 -proposed tracker (LP: #1701042)

  * CVE-2017-7895
    - nfsd: Remove assignments inside conditions
    - svcrdma: Do not add XDR padding to xdr_buf page vector
    - nfsd4: minor NFSv2/v3 write decoding cleanup
    - nfsd: stricter decoding of write-like NFSv2/v3 ops

  * CVE-2017-9605
    - drm/vmwgfx: Make sure backup_handle is always valid

  * CVE-2017-1000380
    - ALSA: timer: Fix race between read and ioctl
    - ALSA: timer: Fix missing queue indices reset at SNDRV_TIMER_IOCTL_SELECT

  * linux <3.18: netlink notification is missing when an interface is modified
    (LP: #1690094)
    - rtnetlink: provide api for getting and setting slave info
    - rtnl/do_setlink(): set modified when IFLA_TXQLEN is updated
    - rtnl/do_setlink(): set modified when IFLA_LINKMODE is updated
    - rtnl/do_setlink(): last arg is now a set of flags
    - rtnl/do_setlink(): notify when a netdev is modified

  * CVE-2015-8944
    - Make file credentials available to the seqfile interfaces
    - /proc/iomem: only expose physical resource addresses to privileged users

  * CVE-2016-10088
    - sg_write()/bsg_write() is not fit to be called under KERNEL_DS

  * CVE-2017-7346
    - drm/vmwgfx: limit the number of mip levels in vmw_gb_surface_define_ioctl()

  * CVE-2015-8966
    - arm: fix handling of F_OFD_... in oabi_fcntl64()

  * Missing IOTLB flush causes DMAR errors with SR-IOV (LP: #1697053)
    - iommu/vt-d: Fix missing IOTLB flush in intel_iommu_unmap()

  * CVE-2017-8924
    - USB: serial: io_ti: fix information leak in completion handler

  * CVE-2017-8925
    - USB: serial: omninet: fix reference leaks at open

  * CVE-2015-8967
    - arm64: make sys_call_table const

  * CVE-2015-8964
    - tty: Prevent ldisc drivers from re-using stale tty fields

  * CVE-2015-8955
    - arm64: perf: reject groups spanning multiple HW PMUs

  * CVE-2015-8962
    - sg: Fix double-free when drives detach during SG_IO

  * CVE-2015-8963
    - perf: Fix race in swevent hash

  * CVE-2017-9074
    - ipv6: Check ip6_find_1stfragopt() return value properly.

  * CVE-2014-9900
    - net: Zeroing the structure ethtool_wolinfo in ethtool_get_wol()

 -- Thadeu Lima de Souza Cascardo <email address hidden> Mon, 10 Jul 2017 13:02:31 -0300