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[Jürg Häfliger <1830856@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1830856

Title:
  bad-altstack in ubuntu_stress_smoke_tests failed on AWS ARM64 with
  X-4.15

Status in ubuntu-kernel-tests:
  Fix Released
Status in linux-aws-hwe package in Ubuntu:
  Invalid

Bug description:
  Issue found with 4.15 AWS kernel on X with ARM64 node (amd64 nodes are
  good)

  07:51:49 DEBUG| [stdout] bad-altstack STARTING
  07:51:50 DEBUG| [stdout] bad-altstack RETURNED 2
  07:51:50 DEBUG| [stdout] bad-altstack FAILED
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15194] 2 processors online, 2 processors configured
  07:51:51 DEBUG| [stdout] stress-ng: info:  [15194] dispatching hogs: 4 bad-altstack
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15194] cache allocate: reducing cache level from L3 (too high) to L2
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15194] cache allocate: default cache size: 2048K
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15194] starting stressors
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15195] stress-ng-bad-altstack: started [15195] (instance 0)
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15194] 4 stressors spawned
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15197] stress-ng-bad-altstack: started [15197] (instance 2)
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15196] stress-ng-bad-altstack: started [15196] (instance 1)
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15198] stress-ng-bad-altstack: started [15198] (instance 3)
  07:51:51 DEBUG| [stdout] stress-ng: ../sysdeps/nptl/fork.c:156: __libc_fork: Assertion `THREAD_GETMEM (self, tid) != ppid' failed.
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15196] stress-ng-bad-altstack: exited [15196] (instance 1)
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15195] stress-ng-bad-altstack: exited [15195] (instance 0)
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15194] process [15195] terminated
  07:51:51 DEBUG| [stdout] stress-ng: error: [15194] process 15196 (stress-ng-bad-altstack) terminated with an error, exit status=5 (killed by signal)
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15194] process [15196] terminated
  07:51:51 DEBUG| [stdout] stress-ng: ../sysdeps/nptl/fork.c:156: __libc_fork: Assertion `THREAD_GETMEM (self, tid) != ppid' failed.
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15198] stress-ng-bad-altstack: exited [15198] (instance 3)
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15197] stress-ng-bad-altstack: exited [15197] (instance 2)
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15194] process [15197] terminated
  07:51:51 DEBUG| [stdout] stress-ng: error: [15194] process 15198 (stress-ng-bad-altstack) terminated with an error, exit status=5 (killed by signal)
  07:51:51 DEBUG| [stdout] stress-ng: debug: [15194] process [15198] terminated
  07:51:51 DEBUG| [stdout] stress-ng: info:  [15194] unsuccessful run completed in 1.36s
  07:51:51 DEBUG| [stdout]  

  
  May 29 07:51:49 ip-172-31-14-254 stress-ng: info:  [15194] dispatching hogs: 4 bad-altstack
  May 29 07:51:49 ip-172-31-14-254 stress-ng: error: [15194] process 15196 (stress-ng-bad-altstack) terminated with an error, exit status=5 (killed by signal)
  May 29 07:51:49 ip-172-31-14-254 AutotestCrashHandler: Application stress-ng-bad-a, PID 15199 crashed
  May 29 07:51:49 ip-172-31-14-254 AutotestCrashHandler: Writing core files to ['/home/ubuntu/autotest/client/results/default/ubuntu_stress_smoke_test.stress-smoke-test/debug/crash.stress-ng-bad-a.15199']
  May 29 07:51:49 ip-172-31-14-254 AutotestCrashHandler: Application stress-ng-bad-a, PID 15204 crashed
  May 29 07:51:49 ip-172-31-14-254 AutotestCrashHandler: Writing core files to ['/home/ubuntu/autotest/client/results/default/ubuntu_stress_smoke_test.stress-smoke-test/debug/crash.stress-ng-bad-a.15204']

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.15.0-1032-aws 4.15.0-1032.34~16.04.1
  ProcVersionSignature: User Name 4.15.0-1032.34~16.04.1-aws 4.15.18
  Uname: Linux 4.15.0-1032-aws aarch64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: arm64
  Date: Wed May 29 08:00:25 2019
  Ec2AMI: ami-0ddba1929e996e2dc
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: us-west-2c
  Ec2InstanceType: a1.large
  Ec2Kernel: unavailable
  Ec2Ramdisk: unavailable
  SourcePackage: linux-aws-hwe
  UpgradeStatus: No upgrade log present (probably fresh install)

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