*** This bug is a duplicate of bug 1888332 ***
https://bugs.launchpad.net/bugs/1888332
Same issue as LP: #1888332. If we use DSCR privileged MSR when writing
in the tracee, it will set dscr_inherit, which will properly restore the
DSCR that is written by the tracer.
Cascardo.
** This bug
A bisect for arch/powerpc/ shows this is the first bad commit:
$ git bisect bad
7d10952e8a56f87a53fc57594078555a9dfd4a07 is the first bad commit
commit 7d10952e8a56f87a53fc57594078555a9dfd4a07
Author: Michael Ellerman
Date: Thu May 28 00:58:42 2020 +1000
powerpc/64s: Save FSCR to
Note for Bionic P9, this test didn't fail on node baltar.
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https://bugs.launchpad.net/bugs/1888339
Title:
[Potential Regression] ptrace-tar from powerpc in
ubuntu_kernel_selftests
On Bionic P8, I can reproduce this issue against proposed kernel
(4.15.0-114.115) with source code in 4.15.0-112. Indicating this might
be a kernel issue instead of a test case issue.
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This failure can be found on 4.15.0-114.115 / 4.15.0-114.115~16.04.1
PowerPC as well
** Summary changed:
- [Potential Regression] ptrace-tar from powerpc in ubuntu_kernel_selftests
failed on E/F
+ [Potential Regression] ptrace-tar from powerpc in ubuntu_kernel_selftests
failed on B/E/F
**
