** Description changed:

+ This is a two-folded issue:
+   1. DKMS module failed to build
+   2. Unable to modprobe sysdig-probe
+ 
  Steps:
-   1. Deploy a KVM instance with Bionic, install linux-kvm on it.
-   2. Install sysdig-dkms
+   1. Deploy a KVM instance with Bionic, install linux-kvm on it.
+   2. Install sysdig-dkms
  
  Result:
-     Setting up sysdig-dkms (0.19.1-1build2) ...
-     Loading new sysdig-0.19.1 DKMS files...
-     Building for 4.15.0-1004-kvm
-     Building initial module for 4.15.0-1004-kvm
-     Error! Bad return status for module build on kernel: 4.15.0-1004-kvm 
(x86_64)
+     Setting up sysdig-dkms (0.19.1-1build2) ...
+     Loading new sysdig-0.19.1 DKMS files...
+     Building for 4.15.0-1004-kvm
+     Building initial module for 4.15.0-1004-kvm
+     Error! Bad return status for module build on kernel: 4.15.0-1004-kvm 
(x86_64)
  
  The dkms make log:
-     DKMS make.log for sysdig-0.19.1 for kernel 4.15.0-1004-kvm (x86_64)
-     Tue Apr 17 09:11:09 UTC 2018
-     make: Entering directory '/usr/src/linux-headers-4.15.0-1004-kvm'
-     Makefile:974: *** "Cannot generate ORC metadata for 
CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or 
elfutils-libelf-devel".  Stop.
-     make: Leaving directory '/usr/src/linux-headers-4.15.0-1004-kvm'
+     DKMS make.log for sysdig-0.19.1 for kernel 4.15.0-1004-kvm (x86_64)
+     Tue Apr 17 09:11:09 UTC 2018
+     make: Entering directory '/usr/src/linux-headers-4.15.0-1004-kvm'
+     Makefile:974: *** "Cannot generate ORC metadata for 
CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or 
elfutils-libelf-devel".  Stop.
+     make: Leaving directory '/usr/src/linux-headers-4.15.0-1004-kvm'
  
- Install libelf-dev can solve this issue. Since we don't ask the test to
- install this package, and it runs smoothly on the other releases, I
- think this might be a bug.
+ Install libelf-dev can solve the module build issue. But note that we
+ don't ask the test to install this package, and it runs smoothly on the
+ other releases.
+ 
+ Furthermore, even with the libelf-dev, sysdig-dkms module install,
+ command "sudo modprobe sysdig-probe" will return:
+ 
+ [ 1667.146657] sysdig_probe: Unknown symbol tracepoint_probe_unregister (err 
0)
+ [ 1667.146766] sysdig_probe: Unknown symbol for_each_kernel_tracepoint (err 0)
+ [ 1667.146774] sysdig_probe: Unknown symbol tracepoint_probe_register (err 0)
+ 
  
  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-1004-kvm 4.15.0-1004.4
  ProcVersionSignature: User Name 4.15.0-1004.4-kvm 4.15.15
  Uname: Linux 4.15.0-1004-kvm x86_64
  ApportVersion: 2.20.9-0ubuntu5
  Architecture: amd64
  Date: Tue Apr 17 09:11:17 2018
  ProcEnviron:
-  TERM=xterm-256color
-  PATH=(custom, no user)
-  XDG_RUNTIME_DIR=<set>
-  LANG=C.UTF-8
-  SHELL=/bin/bash
+  TERM=xterm-256color
+  PATH=(custom, no user)
+  XDG_RUNTIME_DIR=<set>
+  LANG=C.UTF-8
+  SHELL=/bin/bash
  SourcePackage: linux-kvm
  UpgradeStatus: No upgrade log present (probably fresh install)

** Summary changed:

- Failed to install sysdig DKMS module on B-KVM kernel
+ Failed to run ubuntu_sysdig_smoke_test on B-KVM kernel

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https://bugs.launchpad.net/bugs/1764693

Title:
  Failed to run ubuntu_sysdig_smoke_test on B-KVM kernel

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