TRACE_syscall.ptrace_syscall_faked in seccomp from ubuntu_kernel_selftests failed on B/C PowerPC

Bug #1829363 reported by Po-Hsu Lin on 2019-05-16
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

This test will fail on Bionic / Cosmic PowerPC:

[ RUN ] TRACE_syscall.ptrace_syscall_faked
seccomp_bpf.c:1837:TRACE_syscall.ptrace_syscall_faked:Expected 45000 (45000) == syscall(207) (18446744073709551615)
TRACE_syscall.ptrace_syscall_faked: Test failed at step #13
[ FAIL ] TRACE_syscall.ptrace_syscall_faked

This test will pass on PowerPC with Disco kernel.

As this issue can be reproduced with the upsteam kernel tree, so it looks like a kernel issue instead of a test case issue to me.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.18.0-20-generic 4.18.0-20.21~18.04.1
ProcVersionSignature: Ubuntu 4.18.0-20.21~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-20-generic ppc64le
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: ppc64el
Date: Thu May 16 09:59:19 2019
ProcLoadAvg: 0.07 0.40 0.68 1/1315 7583
 1: POSIX ADVISORY WRITE 1767 00:17:402 0 EOF
 2: POSIX ADVISORY WRITE 3941 00:17:825 0 EOF
 3: FLOCK ADVISORY WRITE 3492 00:17:390 0 EOF
 4: FLOCK ADVISORY WRITE 3947 00:17:820 0 EOF
 5: POSIX ADVISORY WRITE 3872 00:17:799 0 EOF
 Filename Type Size Used Priority
 /swap.img file 8388544 0 -2
ProcVersion: Linux version 4.18.0-20-generic (buildd@bos02-ppc64el-019) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21~18.04.1-Ubuntu SMP Wed May 8 08:51:08 UTC 2019
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDump_list: total 0
cpu_cores: Number of cores present = 20
cpu_coreson: Number of cores online = 20
cpu_dscr: DSCR is 0
 min: 3.694 GHz (cpu 159)
 max: 3.695 GHz (cpu 0)
 avg: 3.694 GHz
 Could not retrieve current diagnostics mode,
 No kernel interface to firmware
cpu_smt: SMT=8

Po-Hsu Lin (cypressyew) wrote :
tags: added: cosmic
affects: linux-signed-hwe (Ubuntu) → linux (Ubuntu)

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1829363

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.

Changed in linux (Ubuntu):
status: New → Incomplete
Changed in linux (Ubuntu Bionic):
status: New → Incomplete
Changed in linux (Ubuntu Cosmic):
status: New → Incomplete
Po-Hsu Lin (cypressyew) on 2019-09-16
tags: added: ubuntu-kernel-selftests
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