Alright, so I noticed that 4.9-rc1 is still good, so I did a reverse
commit bisect between 4.8 and r.9-rc1. Here was the final result:
2a5708409e4e05446eb1a89ecb48641d6fd5d5a9 is the first bad commit
commit 2a5708409e4e05446eb1a89ecb48641d6fd5d5a9
Author: Lv Zheng <lv.zh...@intel.com>
Date: Wed Sep 7 16:50:21 2016 +0800
ACPI / EC: Fix a gap that ECDT EC cannot handle EC events
It is possible to register _Qxx from namespace and use the ECDT EC to
perform event handling. The reported bug reveals that Windows is using ECDT
in this way in case the namespace EC is not present. This patch facilitates
Linux to support ECDT in this way.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=115021
Reported-and-tested-by: Luya Tshimbalanga <l...@fedoraproject.org>
Tested-by: Jonh Henderson <jw.he...@gmail.com>
Reviewed-by: Peter Wu <pe...@lekensteyn.nl>
Signed-off-by: Lv Zheng <lv.zh...@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
The parent of that commit (which I am assuming is the "good commit") is:
commit 46922d2a3aff5122253d97e64500801c08f4f2c0
Author: Lv Zheng <lv.zh...@intel.com>
Date: Wed Sep 7 16:50:14 2016 +0800
ACPI / EC: Fix a memory leakage issue in acpi_ec_add()
When the handler installation failed, there was no code to free the
allocated EC device. This patch fixes this memory leakage issue.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=115021
Reported-and-tested-by: Luya Tshimbalanga <l...@fedoraproject.org>
Tested-by: Jonh Henderson <jw.he...@gmail.com>
Signed-off-by: Lv Zheng <lv.zh...@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
Let me know if you need anything else.
** Bug watch added: Linux Kernel Bug Tracker #115021
http://bugzilla.kernel.org/show_bug.cgi?id=115021
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1653327
Title:
100% cpu usage with 4.8 kernel after upgrade to 16.10
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