This bug was fixed in the package linux - 4.18.0-21.22
---------------
linux (4.18.0-21.22) cosmic; urgency=medium
* linux: 4.18.0-21.22 -proposed tracker (LP: #1829186)
* disable a.out support (LP: #1818552)
- [Config] Turn off a.out support
* ftrace in ubuntu_kernel_selftests hang with Cosmic kernel (LP: #1826385)
- kprobes/x86: Fix instruction patching corruption when copying more than
one
RIP-relative instruction
* touchpad not working on lenovo yoga 530 (LP: #1787775)
- Revert "UBUNTU: SAUCE: i2c:amd Depends on ACPI"
- Revert "UBUNTU: SAUCE: i2c:amd move out pointer in union i2c_event_base"
- Revert "UBUNTU: SAUCE: i2c:amd I2C Driver based on PCI Interface for
upcoming platform"
- i2c: add extra check to safe DMA buffer helper
- i2c: Add drivers for the AMD PCIe MP2 I2C controller
- [Config] Update config for AMD MP2 I2C driver
- [Config] Update I2C_AMD_MP2 annotations
* Geneve tunnels don't work when ipv6 is disabled (LP: #1794232)
- geneve: correctly handle ipv6.disable module parameter
* There are 4 HDMI/Displayport audio output listed in sound setting without
attach any HDMI/DP monitor (LP: #1827967)
- ALSA: hda/hdmi - Read the pin sense from register when repolling
- ALSA: hda/hdmi - Consider eld_valid when reporting jack event
* Headphone jack switch sense is inverted: plugging in headphones disables
headphone output (LP: #1824259)
- ASoC: rt5645: Headphone Jack sense inverts on the LattePanda board
* CTAUTO:DevOps:860.50:devops4fp1:Error occurred during LINUX Dmesg error
Checking for all LINUX clients for devops4p10 (LP: #1766201)
- SAUCE: integrity: downgrade error to warning
* potential memory corruption on arm64 on dev release (LP: #1827437)
- driver core: Postpone DMA tear-down until after devres release
* powerpc/pmu/ebb test in ubuntu_kernel_selftest failed with "error while
loading shared libraries" on Bionic/Cosmic PowerPC (LP: #1812805)
- selftests/powerpc/pmu: Link ebb tests with -no-pie
* unnecessary request_queue freeze (LP: #1815733)
- block: avoid setting nr_requests to current value
- block: avoid setting none scheduler if it's already none
* Kprobe event string type argument failed in ftrace from
ubuntu_kernel_selftests on B/C i386 (LP: #1825780)
- selftests/ftrace: Fix kprobe string testcase to not probe notrace function
* False positive test result in run_netsocktests from net in
ubuntu_kernel_selftest (LP: #1825777)
- selftests/net: correct the return value for run_netsocktests
-- Stefan Bader <stefan.ba...@canonical.com> Wed, 15 May 2019 13:18:36
+0200
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https://bugs.launchpad.net/bugs/1827437
Title:
potential memory corruption on arm64 on dev release
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
Fix Released
Status in linux source package in Cosmic:
Fix Released
Bug description:
[Impact]
Potential memory corruption.
[Test Case]
I've not seen a failure in practice (well, it's easy to crash 5.0 but, as the
commit message notes, that's because it includes an additional patch that
happens to "tickle" this. But to regression test, I boot a HiSilicon D06 to a
ramdisk and remove the hisi_sas_v3_hw module, which allocates memory as
described in the commit message.
[Fix]
376991db4b646 driver core: Postpone DMA tear-down until after devres release
[Regression Risk]
From the stable tree, so in theory would be applied eventually anyway.
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