C++ demangling support missing from perf

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

apport-collect 1396654

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.

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probably caused by the use of HAVE_CPLUS_DEMANGLE in the make call, the variable has been renamed
see also debian bug 763002

People were pinging me about this bug and added some SO links of it affecting people so I thought I'd add these here if it helps triage severity:

http://stackoverflow.com/questions/33057653/perf-enable-demangling-of-callgraph
http://stackoverflow.com/questions/34234354/perf-shows-mangled-function-names
http://stackoverflow.com/questions/32468991/perf-report-function-names-and-extra-characters

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

apport-collect 1396654

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.

The following build dependency packages have to be installed when building perf in order to have C++ symbol demangling work.

Packages: libiberty-dev, binutils-dev

Otherwise if you're building perf via it's Makefile in the linux source code. It will print "libbfd [OFF]" when auto-detecting features.

Added binutils-dev. libiberty-dev was already in the Build-deps

This bug was fixed in the package linux - 4.10.0-14.16

---------------
linux (4.10.0-14.16) zesty; urgency=low

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1673805

  * msleep() bug causes Nuvoton I2C TPM device driver delays (LP: #1667567)
    - tpm: msleep() delays - replace with usleep_range() in i2c nuvoton driver
    - SAUCE: tpm: add sleep only for retry in i2c_nuvoton_write_status()

  * C++ demangling support missing from perf (LP: #1396654)
    - [Config] added binutils-dev to Build-deps

  * dm-queue-length module is not included in installer/initramfs (LP: #1673350)
    - [Config] d-i: Also add dm-queue-length to multipath modules

  * move aufs.ko from -extra to linux-image package (LP: #1673498)
    - [config] aufs.ko moved to linux-image package

  * Using an NVMe drive causes huge power drain (LP: #1664602)
    - nvme: Add a quirk mechanism that uses identify_ctrl
    - nvme: Enable autonomous power state transitions

  * Broadcom bluetooth modules sometimes fail to initialize (LP: #1483101)
    - Bluetooth: btbcm: Add a delay for module reset

  * Need support of Broadcom bluetooth device [413c:8143] (LP: #1166113)
    - Bluetooth: btusb: Add support for 413c:8143

  * Zesty update to v4.10.3 stable release (LP: #1673118)
    - serial: 8250_pci: Add MKS Tenta SCOM-0800 and SCOM-0801 cards
    - KVM: s390: Disable dirty log retrieval for UCONTROL guests
    - KVM: VMX: use correct vmcs_read/write for guest segment selector/base
    - Bluetooth: Add another AR3012 04ca:3018 device
    - phy: qcom-ufs: Don't kfree devres resource
    - phy: qcom-ufs: Fix misplaced jump label
    - s390/qdio: clear DSCI prior to scanning multiple input queues
    - s390/dcssblk: fix device size calculation in dcssblk_direct_access()
    - s390/kdump: Use "LINUX" ELF note name instead of "CORE"
    - s390/chsc: Add exception handler for CHSC instruction
    - s390: TASK_SIZE for kernel threads
    - s390/topology: correct allocation of topology information
    - s390: make setup_randomness work
    - s390: use correct input data address for setup_randomness
    - net: mvpp2: fix DMA address calculation in mvpp2_txq_inc_put()
    - cxl: Prevent read/write to AFU config space while AFU not configured
    - cxl: fix nested locking hang during EEH hotplug
    - brcmfmac: fix incorrect event channel deduction
    - mnt: Tuck mounts under others instead of creating shadow/side mounts.
    - IB/ipoib: Fix deadlock between rmmod and set_mode
    - IB/IPoIB: Add destination address when re-queue packet
    - IB/mlx5: Fix out-of-bound access
    - IB/SRP: Avoid using IB_MR_TYPE_SG_GAPS
    - IB/srp: Avoid that duplicate responses trigger a kernel bug
    - IB/srp: Fix race conditions related to task management
    - Btrfs: fix data loss after truncate when using the no-holes feature
    - orangefs: Use RCU for destroy_inode
    - memory/atmel-ebi: Fix ns <-> cycles conversions
    - tracing: Fix return value check in trace_benchmark_reg()
    - ktest: Fix child exit code processing
    - ceph: remove req from unsafe list when unregistering it
    - target: Fix NULL dereference during LUN lookup + active I/O shutdown
    - drivers/pci/hotplug: Han...

This bug was nominated against a series that is no longer supported, ie yakkety. The bug task representing the yakkety nomination is being closed as Won't Fix.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

@timg-tpi Thanks for fixing this. I’m running 16.04 with HWE stack. My kernel is `4.13.0-45-generic #50~16.04.1-Ubuntu`. Will this fix be also available in the `linux-tools-generic-hwe-16.04` package soon? Could you maybe add your fix to this package?

Will this fix be available in bionic (18.04) as well? I've recently tried installing perf from apt-get and symbol demangling still does not work.

Status changed to 'Confirmed' because the bug affects multiple users.

As #18 pointed out, this still affects 18.04. Could the fix be ported there?

Found the relevant commit that needs to get ported.
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/zesty/commit/?id=4f86b396b67c633d6f17fb8911ac51f6d93129a5

I checked this issue again, because it is really anoying.
The fix is already present in HWE kernel source.
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/xenial/tree/debian.hwe/control.stub.in?h=hwe
However perf (`/usr/bin/perf`) is comming from linux-tools-common package which is build from 4.4.0 kernel sources.
However even these sources already have the fix.

The reason this is still missing in current Xenial just seam to be that nobody rebuild the package after applying the fix.

After locally rebuilding the package it works for me now.

I was wrong. `/usr/bin/perf` is just a shell script calling a kernel specific version.
The real executable is in `linux-hwe-tools-4.**`.
I checked the source of `linux-hwe-tools-4.15.0-36` and it already has the necessary fix.
Rebuilding just the perf executable from withhin the source dir resulted in a binary with correct demangling support.
```
apt-get source linux-hwe-tools-4.15.0-36
sudo apt-get build-dep linux-hwe-tools-4.15.0-36
cd linux-hwe-4.15.0/tools/perf && make
```

However rebuilding and installing the package `linux-hwe-tools-4.15.0-36` resulted in a different binary with still broken demangling. I don’t know what’s the reason for that.
```
apt-get source linux-hwe-tools-4.15.0-36
sudo apt-get build-dep linux-hwe-tools-4.15.0-36
cd linux-hwe-4.15.0 && debuild -us -uc -b
sudo dpkg -i ../linux-hwe-tools-4.15.0-36_4.15.0-36.39~16.04.1_amd64.deb ../linux-tools-4.15.0-36-generic_4.15.0-36.39~16.04.1_amd64.deb
```

Status changed to 'Confirmed' because the bug affects multiple users.

I am affected by this on Ubuntu 18.04 (Bionic).

The only workaround I have seen, is to build/rebuild the `perf` tool from the source package. This does not fix the problem for me on 18.04.

```
sudo apt-get install libiberty-dev binutils-dev
mkdir tmp
cd tmp
apt-get source linux-tools-4.15.0-39-generic
cd linux-4.15.0/
sudo apt-get build-dep linux-tools-4.15.0-39-generic
debuild --no-sign
```

Then, the newly built `debian/linux-tools-4.15.0-39/usr/lib/linux-tools-4.15.0-39/perf` still does not do any demangling of C++ symbols.

Am I doing something wrong, or is it a new kind of problem with a different solution on 18.04?

Any help will be greatly appreciated.

Ok, on 18.04 (Bionic), if I do this

```
sudo apt-get build-dep linux-tools-4.15.0-39-generic
sudo apt-get install libiberty-dev binutils-dev
mkdir tmp
cd tmp
apt-get source linux-tools-4.15.0-39-generic
cd linux-4.15.0/tools/perf
make
```
I do get a perf command that demangles (so I now have a workaround)

Still, if I use `debuild` instead, as shown in my previous post, the command is apparently built differently and is not able to demangle.

So, I can confirm the findings similar to post #24.

Broken again in disco, let's update the state.

Status changed to 'Confirmed' because the bug affects multiple users.

There seems to be a mistype in the build flags; haven't checked whether it fixes the bug though.

UPD: the patch does seem to fix the issue.

Note that `perf` can crash when demangling. The (trivial) patch shown below fixes the issue for me:
http://lkml.iu.edu/hypermail/linux/kernel/1810.2/02663.html

Related libbfd issue for incorrect demangling:
https://sourceware.org/bugzilla/show_bug.cgi?id=23715

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!

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

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

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!

I've installed linux-tools-common 4.15.0-47.50 from bionic-proposed and checked that the new /usr/bin/perf binary still doesn't demangle C++ symbols (even when "perf report --demangle" is passed explicitly).

Tested the following on bionic:

$ cat main.cpp
#include <benchmark/benchmark.h>
#include <vector>

static __attribute__ ((noinline)) int my_really_big_function()
{
  for(size_t i = 0; i < 1000; ++i)
  {
    benchmark::DoNotOptimize(i % 5);
  }
  return 0;
}

static __attribute__ ((noinline)) void caller1()
{
  for(size_t i = 0; i < 1000; ++i)
  {
    benchmark::DoNotOptimize(my_really_big_function());
    benchmark::DoNotOptimize(i % 5);
  }
}

static __attribute__ ((noinline)) void myfun(benchmark::State& state)
{
  while(state.KeepRunning())
  {
    caller1();
  }
}

BENCHMARK(myfun);

BENCHMARK_MAIN();

$ clang++ main.cpp -o main -fno-omit-frame-pointer -O0 -lpthread -lbenchmark

$ perf record -g ./main

$ perf report -g 'graph,0.5,caller'

Result:

 - with linux-tools-common 4.15.0-46.49:

Samples: 3K of event 'cpu-clock', Event count (approx.): 757250000
  Children Self Command Shared Object Symbol
+ 99.67% 0.00% main libbenchmark.so.1.3.0 [.] 0x0000000000015b58
+ 99.67% 0.00% main main [.] _ZL5myfunRN9benchmark5StateE
+ 99.64% 0.17% main main [.] _ZL7caller1v
+ 99.50% 99.47% main main [.] _ZL22my_really_big_functionv
...

 - with linux-tools-common 4.15.0-47.50 (from -proposed):

Samples: 3K of event 'cpu-clock', Event count (approx.): 755000000
  Children Self Command Shared Object Symbol
+ 99.77% 0.00% main libbenchmark.so.1.3.0 [.] 0x0000000000015b58
+ 99.77% 0.00% main main [.] myfun
+ 99.70% 0.13% main main [.] caller1
+ 99.64% 99.64% main main [.] my_really_big_function
...

This problem seems fixed now.

Hmm, apparently /usr/bin/perf is only a wrapper script that runs the "right" version of the perf executable for the current kernel. But the perf executable (typically inside /usr/lib/linux-tools-VERSION) is part of the "linux-tools-VERSION" package.

So if I do:
$ sudo apt install linux-tools-4.15.0-47/bionic-proposed

and then run /usr/lib/linux-tools-4.15.0-47/perf directly, instead of the wrapper script which will still run the perf version for the LTS kernel, things finally work here.

I tested this on 16.04 for linux-tools-generic-hwe-16.04/xenial-proposed.

This bug was fixed in the package linux - 4.4.0-145.171

---------------
linux (4.4.0-145.171) xenial; urgency=medium

  * linux: 4.4.0-145.171 -proposed tracker (LP: #1821724)

  * linux-generic should depend on linux-base >=4.1 (LP: #1820419)
    - [Packaging] Fix linux-base dependency

linux (4.4.0-144.170) xenial; urgency=medium

  * linux: 4.4.0-144.170 -proposed tracker (LP: #1819660)

  * Packaging resync (LP: #1786013)
    - [Packaging] resync getabis
    - [Packaging] update helper scripts
    - [Packaging] resync retpoline extraction

  * C++ demangling support missing from perf (LP: #1396654)
    - [Packaging] fix a mistype

  * CVE-2019-9213
    - mm: enforce min addr even if capable() in expand_downwards()

  * CVE-2019-3460
    - Bluetooth: Check L2CAP option sizes returned from l2cap_get_conf_opt

  * Xenial update: 4.4.176 upstream stable release (LP: #1818815)
    - net: fix IPv6 prefix route residue
    - vsock: cope with memory allocation failure at socket creation time
    - hwmon: (lm80) Fix missing unlock on error in set_fan_div()
    - net: Fix for_each_netdev_feature on Big endian
    - net: Add header for usage of fls64()
    - tcp: tcp_v4_err() should be more careful
    - net: Do not allocate page fragments that are not skb aligned
    - tcp: clear icsk_backoff in tcp_write_queue_purge()
    - vxlan: test dev->flags & IFF_UP before calling netif_rx()
    - net: stmmac: Fix a race in EEE enable callback
    - net: ipv4: use a dedicated counter for icmp_v4 redirect packets
    - x86: livepatch: Treat R_X86_64_PLT32 as R_X86_64_PC32
    - mfd: as3722: Handle interrupts on suspend
    - mfd: as3722: Mark PM functions as __maybe_unused
    - net/x25: do not hold the cpu too long in x25_new_lci()
    - mISDN: fix a race in dev_expire_timer()
    - ax25: fix possible use-after-free
    - Linux 4.4.176

  * sky2 ethernet card don't work after returning from suspension
    (LP: #1798921) // Xenial update: 4.4.176 upstream stable release
    (LP: #1818815)
    - sky2: Increase D3 delay again

  * Xenial update: 4.4.175 upstream stable release (LP: #1818813)
    - drm/bufs: Fix Spectre v1 vulnerability
    - staging: iio: adc: ad7280a: handle error from __ad7280_read32()
    - ASoC: Intel: mrfld: fix uninitialized variable access
    - scsi: lpfc: Correct LCB RJT handling
    - ARM: 8808/1: kexec:offline panic_smp_self_stop CPU
    - dlm: Don't swamp the CPU with callbacks queued during recovery
    - x86/PCI: Fix Broadcom CNB20LE unintended sign extension (redux)
    - powerpc/pseries: add of_node_put() in dlpar_detach_node()
    - serial: fsl_lpuart: clear parity enable bit when disable parity
    - ptp: check gettime64 return code in PTP_SYS_OFFSET ioctl
    - staging:iio:ad2s90: Make probe handle spi_setup failure
    - staging: iio: ad7780: update voltage on read
    - ARM: OMAP2+: hwmod: Fix some section annotations
    - modpost: validate symbol names also in find_elf_symbol
    - perf tools: Add Hygon Dhyana support
    - soc/tegra: Don't leak device tree node reference
    - f2fs: move dir data flush to write checkpoint process
    - f2fs: fix wrong return value of f2fs_acl_create
    - sunvdc: Do not spin in an infin...

This bug was fixed in the package linux - 4.15.0-47.50

---------------
linux (4.15.0-47.50) bionic; urgency=medium

  * linux: 4.15.0-47.50 -proposed tracker (LP: #1819716)

  * Packaging resync (LP: #1786013)
    - [Packaging] resync getabis
    - [Packaging] update helper scripts
    - [Packaging] resync retpoline extraction

  * C++ demangling support missing from perf (LP: #1396654)
    - [Packaging] fix a mistype

  * arm-smmu-v3 arm-smmu-v3.3.auto: CMD_SYNC timeout (LP: #1818162)
    - iommu/arm-smmu-v3: Fix unexpected CMD_SYNC timeout

  * Crash in nvme_irq_check() when using threaded interrupts (LP: #1818747)
    - nvme-pci: fix out of bounds access in nvme_cqe_pending

  * CVE-2019-9213
    - mm: enforce min addr even if capable() in expand_downwards()

  * CVE-2019-3460
    - Bluetooth: Check L2CAP option sizes returned from l2cap_get_conf_opt

  * amdgpu with mst WARNING on blanking (LP: #1814308)
    - drm/amd/display: Don't use dc_link in link_encoder
    - drm/amd/display: Move wait for hpd ready out from edp power control.
    - drm/amd/display: eDP sequence BL off first then DP blank.
    - drm/amd/display: Fix unused variable compilation error
    - drm/amd/display: Fix warning about misaligned code
    - drm/amd/display: Fix MST dp_blank REG_WAIT timeout

  * tun/tap: unable to manage carrier state from userland (LP: #1806392)
    - tun: implement carrier change

  * CVE-2019-8980
    - exec: Fix mem leak in kernel_read_file

  * raw_skew in timer from the ubuntu_kernel_selftests failed on Bionic
    (LP: #1811194)
    - selftest: timers: Tweak raw_skew to SKIP when ADJ_OFFSET/other clock
      adjustments are in progress

  * [Packaging] Allow overlay of config annotations (LP: #1752072)
    - [Packaging] config-check: Add an include directive

  * CVE-2019-7308
    - bpf: move {prev_,}insn_idx into verifier env
    - bpf: move tmp variable into ax register in interpreter
    - bpf: enable access to ax register also from verifier rewrite
    - bpf: restrict map value pointer arithmetic for unprivileged
    - bpf: restrict stack pointer arithmetic for unprivileged
    - bpf: restrict unknown scalars of mixed signed bounds for unprivileged
    - bpf: fix check_map_access smin_value test when pointer contains offset
    - bpf: prevent out of bounds speculation on pointer arithmetic
    - bpf: fix sanitation of alu op with pointer / scalar type from different
      paths
    - bpf: add various test cases to selftests

  * CVE-2017-5753
    - bpf: properly enforce index mask to prevent out-of-bounds speculation
    - bpf: fix inner map masking to prevent oob under speculation

  * BPF: kernel pointer leak to unprivileged userspace (LP: #1815259)
    - bpf/verifier: disallow pointer subtraction

  * squashfs hardening (LP: #1816756)
    - squashfs: more metadata hardening
    - squashfs metadata 2: electric boogaloo
    - squashfs: more metadata hardening
    - Squashfs: Compute expected length from inode size rather than block length

  * efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted (LP: #1814982)
    - efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted

  * Update ENA driver to version 2.0.3K (LP: #1816806)...

This bug was fixed in the package linux - 4.18.0-17.18

---------------
linux (4.18.0-17.18) cosmic; urgency=medium

  * linux: 4.18.0-17.18 -proposed tracker (LP: #1819624)

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

  * C++ demangling support missing from perf (LP: #1396654)
    - [Packaging] fix a mistype

  * arm-smmu-v3 arm-smmu-v3.3.auto: CMD_SYNC timeout (LP: #1818162)
    - iommu/arm-smmu-v3: Fix unexpected CMD_SYNC timeout

  * Crash in nvme_irq_check() when using threaded interrupts (LP: #1818747)
    - nvme-pci: fix out of bounds access in nvme_cqe_pending

  * CVE-2019-9003
    - ipmi: fix use-after-free of user->release_barrier.rda

  * CVE-2019-9162
    - netfilter: nf_nat_snmp_basic: add missing length checks in ASN.1 cbs

  * CVE-2019-9213
    - mm: enforce min addr even if capable() in expand_downwards()

  * CVE-2019-3460
    - Bluetooth: Check L2CAP option sizes returned from l2cap_get_conf_opt

  * tun/tap: unable to manage carrier state from userland (LP: #1806392)
    - tun: implement carrier change

  * CVE-2019-8980
    - exec: Fix mem leak in kernel_read_file

  * [Packaging] Allow overlay of config annotations (LP: #1752072)
    - [Packaging] config-check: Add an include directive

  * amdgpu with mst WARNING on blanking (LP: #1814308)
    - drm/amd/display: Fix MST dp_blank REG_WAIT timeout

  * CVE-2019-7308
    - bpf: move {prev_,}insn_idx into verifier env
    - bpf: move tmp variable into ax register in interpreter
    - bpf: enable access to ax register also from verifier rewrite
    - bpf: restrict map value pointer arithmetic for unprivileged
    - bpf: restrict stack pointer arithmetic for unprivileged
    - bpf: restrict unknown scalars of mixed signed bounds for unprivileged
    - bpf: fix check_map_access smin_value test when pointer contains offset
    - bpf: prevent out of bounds speculation on pointer arithmetic
    - bpf: fix sanitation of alu op with pointer / scalar type from different
      paths
    - bpf: add various test cases to test_verifier
    - bpf: add various test cases to selftests

  * CVE-2017-5753
    - bpf: fix inner map masking to prevent oob under speculation

  * Use memblock quirk instead of delayed allocation for GICv3 LPI tables
    (LP: #1816425)
    - efi/arm: Revert "Defer persistent reservations until after paging_init()"
    - arm64, mm, efi: Account for GICv3 LPI tables in static memblock reserve
      table

  * efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted (LP: #1814982)
    - efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted

  * Update ENA driver to version 2.0.3K (LP: #1816806)
    - net: ena: update driver version from 2.0.2 to 2.0.3
    - net: ena: fix race between link up and device initalization
    - net: ena: fix crash during failed resume from hibernation

  * Silent "Unknown key" message when pressing keyboard backlight hotkey
    (LP: #1817063)
    - platform/x86: dell-wmi: Ignore new keyboard backlight change event

  * CVE-2018-19824
    - ALSA: usb-audio: Fix UAF decrement if card has no live interfaces in card.c

  * CVE-2019-3459
    - Bluetooth: Verify that l2cap_get...

This bug was fixed in the package linux-hwe - 4.15.0-47.50~16.04.1

---------------
linux-hwe (4.15.0-47.50~16.04.1) xenial; urgency=medium

  * linux-hwe: 4.15.0-47.50~16.04.1 -proposed tracker (LP: #1819715)

  * Packaging resync (LP: #1786013)
    - [Packaging] update helper scripts
    - [Packaging] update update.conf

  * Strip specific changes from update-from-*master (LP: #1817734)
    - Packaging: Introduce copy-files and local-mangle
    - Packaging: Make update-from-*master call copy-files

  [ Ubuntu: 4.15.0-47.50 ]

  * linux: 4.15.0-47.50 -proposed tracker (LP: #1819716)
  * Packaging resync (LP: #1786013)
    - [Packaging] resync getabis
    - [Packaging] update helper scripts
    - [Packaging] resync retpoline extraction
  * C++ demangling support missing from perf (LP: #1396654)
    - [Packaging] fix a mistype
  * arm-smmu-v3 arm-smmu-v3.3.auto: CMD_SYNC timeout (LP: #1818162)
    - iommu/arm-smmu-v3: Fix unexpected CMD_SYNC timeout
  * Crash in nvme_irq_check() when using threaded interrupts (LP: #1818747)
    - nvme-pci: fix out of bounds access in nvme_cqe_pending
  * CVE-2019-9213
    - mm: enforce min addr even if capable() in expand_downwards()
  * CVE-2019-3460
    - Bluetooth: Check L2CAP option sizes returned from l2cap_get_conf_opt
  * amdgpu with mst WARNING on blanking (LP: #1814308)
    - drm/amd/display: Don't use dc_link in link_encoder
    - drm/amd/display: Move wait for hpd ready out from edp power control.
    - drm/amd/display: eDP sequence BL off first then DP blank.
    - drm/amd/display: Fix unused variable compilation error
    - drm/amd/display: Fix warning about misaligned code
    - drm/amd/display: Fix MST dp_blank REG_WAIT timeout
  * tun/tap: unable to manage carrier state from userland (LP: #1806392)
    - tun: implement carrier change
  * CVE-2019-8980
    - exec: Fix mem leak in kernel_read_file
  * raw_skew in timer from the ubuntu_kernel_selftests failed on Bionic
    (LP: #1811194)
    - selftest: timers: Tweak raw_skew to SKIP when ADJ_OFFSET/other clock
      adjustments are in progress
  * [Packaging] Allow overlay of config annotations (LP: #1752072)
    - [Packaging] config-check: Add an include directive
  * CVE-2019-7308
    - bpf: move {prev_,}insn_idx into verifier env
    - bpf: move tmp variable into ax register in interpreter
    - bpf: enable access to ax register also from verifier rewrite
    - bpf: restrict map value pointer arithmetic for unprivileged
    - bpf: restrict stack pointer arithmetic for unprivileged
    - bpf: restrict unknown scalars of mixed signed bounds for unprivileged
    - bpf: fix check_map_access smin_value test when pointer contains offset
    - bpf: prevent out of bounds speculation on pointer arithmetic
    - bpf: fix sanitation of alu op with pointer / scalar type from different
      paths
    - bpf: add various test cases to selftests
  * CVE-2017-5753
    - bpf: properly enforce index mask to prevent out-of-bounds speculation
    - bpf: fix inner map masking to prevent oob under speculation
  * BPF: kernel pointer leak to unprivileged userspace (LP: #1815259)
    - bpf/verifier: disallow pointer subtraction
  * squashfs hardening (LP: #1816756)
 ...

This bug was fixed in the package linux-hwe - 4.18.0-17.18~18.04.1

---------------
linux-hwe (4.18.0-17.18~18.04.1) bionic; urgency=medium

  * linux-hwe: 4.18.0-17.18~18.04.1 -proposed tracker (LP: #1819623)

  * Packaging resync (LP: #1786013)
    - [Packaging] update update.conf

  * Strip specific changes from update-from-*master (LP: #1817734)
    - Packaging: Introduce copy-files and local-mangle
    - Packaging: Make update-from-*master call copy-files

  [ Ubuntu: 4.18.0-17.18 ]

  * linux: 4.18.0-17.18 -proposed tracker (LP: #1819624)
  * Packaging resync (LP: #1786013)
    - [Packaging] resync getabis
    - [Packaging] update helper scripts
  * C++ demangling support missing from perf (LP: #1396654)
    - [Packaging] fix a mistype
  * arm-smmu-v3 arm-smmu-v3.3.auto: CMD_SYNC timeout (LP: #1818162)
    - iommu/arm-smmu-v3: Fix unexpected CMD_SYNC timeout
  * Crash in nvme_irq_check() when using threaded interrupts (LP: #1818747)
    - nvme-pci: fix out of bounds access in nvme_cqe_pending
  * CVE-2019-9003
    - ipmi: fix use-after-free of user->release_barrier.rda
  * CVE-2019-9162
    - netfilter: nf_nat_snmp_basic: add missing length checks in ASN.1 cbs
  * CVE-2019-9213
    - mm: enforce min addr even if capable() in expand_downwards()
  * CVE-2019-3460
    - Bluetooth: Check L2CAP option sizes returned from l2cap_get_conf_opt
  * tun/tap: unable to manage carrier state from userland (LP: #1806392)
    - tun: implement carrier change
  * CVE-2019-8980
    - exec: Fix mem leak in kernel_read_file
  * [Packaging] Allow overlay of config annotations (LP: #1752072)
    - [Packaging] config-check: Add an include directive
  * amdgpu with mst WARNING on blanking (LP: #1814308)
    - drm/amd/display: Fix MST dp_blank REG_WAIT timeout
  * CVE-2019-7308
    - bpf: move {prev_,}insn_idx into verifier env
    - bpf: move tmp variable into ax register in interpreter
    - bpf: enable access to ax register also from verifier rewrite
    - bpf: restrict map value pointer arithmetic for unprivileged
    - bpf: restrict stack pointer arithmetic for unprivileged
    - bpf: restrict unknown scalars of mixed signed bounds for unprivileged
    - bpf: fix check_map_access smin_value test when pointer contains offset
    - bpf: prevent out of bounds speculation on pointer arithmetic
    - bpf: fix sanitation of alu op with pointer / scalar type from different
      paths
    - bpf: add various test cases to test_verifier
    - bpf: add various test cases to selftests
  * CVE-2017-5753
    - bpf: fix inner map masking to prevent oob under speculation
  * Use memblock quirk instead of delayed allocation for GICv3 LPI tables
    (LP: #1816425)
    - efi/arm: Revert "Defer persistent reservations until after paging_init()"
    - arm64, mm, efi: Account for GICv3 LPI tables in static memblock reserve
      table
  * efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted (LP: #1814982)
    - efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted
  * Update ENA driver to version 2.0.3K (LP: #1816806)
    - net: ena: update driver version from 2.0.2 to 2.0.3
    - net: ena: fix race between link up and device initalization
    - net: ena: fix crash dur...

This bug was fixed in the package linux - 5.0.0-11.12

---------------
linux (5.0.0-11.12) disco; urgency=medium

  * linux: 5.0.0-11.12 -proposed tracker (LP: #1824383)

  * hns3: PPU_PF_ABNORMAL_INT_ST over_8bd_no_fe found [error status=0x1]
    (LP: #1824194)
    - net: hns3: fix for not calculating tx bd num correctly

  * disco: unable to use iptables/enable ufw under -virtual kernel
    (LP: #1823862)
    - [Packaging] add bpfilter to linux-modules

  * Make shiftfs a module rather than built-in (LP: #1824354)
    - [Config] CONFIG_SHIFT_FS=m

  * shiftfs: chown sets untranslated ids in lower fs (LP: #1824350)
    - SAUCE: shiftfs: use translated ids when chaning lower fs attrs

  * [Hyper-V] KVP daemon fails to start on first boot of disco VM (LP: #1820063)
    - [Packaging] bind hv_kvp_daemon startup to hv_kvp device

linux (5.0.0-10.11) disco; urgency=medium

  * linux: 5.0.0-10.11 -proposed tracker (LP: #1823936)

  * Apparmor enforcement failure in lxc selftests (LP: #1823379)
    - SAUCE: apparmor: Restore Y/N in /sys for apparmor's "enabled"

  * systemd cause kernel trace "BUG: unable to handle kernel paging request at
    6db23a14" on Cosmic i386 (LP: #1813244)
    - openvswitch: fix flow actions reallocation

linux (5.0.0-9.10) disco; urgency=medium

  * linux: 5.0.0-9.10 -proposed tracker (LP: #1823228)

  * Packaging resync (LP: #1786013)
    - [Packaging] resync git-ubuntu-log
    - [Packaging] update helper scripts
    - [Packaging] resync retpoline extraction

  * Huawei Hi1822 NIC has poor performance (LP: #1820187)
    - net-next/hinic: replace disable_irq_nosync/enable_irq

  * Add uid shifting overlay filesystem (shiftfs) (LP: #1823186)
    - shiftfs: uid/gid shifting bind mount
    - shiftfs: rework and extend
    - shiftfs: support some btrfs ioctls
    - [Config] enable shiftfs

  * Cannot boot or install - have to use nomodeset (LP: #1821820)
    - Revert "drm/i915/fbdev: Actually configure untiled displays"

  * Disco update: v5.0.6 upstream stable release (LP: #1823060)
    - netfilter: nf_tables: fix set double-free in abort path
    - dccp: do not use ipv6 header for ipv4 flow
    - genetlink: Fix a memory leak on error path
    - gtp: change NET_UDP_TUNNEL dependency to select
    - ipv6: make ip6_create_rt_rcu return ip6_null_entry instead of NULL
    - mac8390: Fix mmio access size probe
    - mISDN: hfcpci: Test both vendor & device ID for Digium HFC4S
    - net: aquantia: fix rx checksum offload for UDP/TCP over IPv6
    - net: datagram: fix unbounded loop in __skb_try_recv_datagram()
    - net/packet: Set __GFP_NOWARN upon allocation in alloc_pg_vec
    - net: phy: meson-gxl: fix interrupt support
    - net: rose: fix a possible stack overflow
    - net: stmmac: fix memory corruption with large MTUs
    - net-sysfs: call dev_hold if kobject_init_and_add success
    - net: usb: aqc111: Extend HWID table by QNAP device
    - packets: Always register packet sk in the same order
    - rhashtable: Still do rehash when we get EEXIST
    - sctp: get sctphdr by offset in sctp_compute_cksum
    - sctp: use memdup_user instead of vmemdup_user
    - tcp: do not use ipv6 header for ipv4 flow
    - tipc: allow servic...