Hi
Related thread on kernel mailinglist: https://lkml.org/lkml/2019/8/11/9
Regards,
Salvatore
Dear Maintainer,
this issue seems to start since patch:
features/all/lockdown/0031-tracefs-Restrict-tracefs-when-the-kernel-is-locked-d.patch
Therefore a vanialla build does not show this issue.
With either of the following changes on top of all
debian patches, the exception does not happen.
A selfcompiled kernel from git (version 5.3-rc3) does not show that error.
Processing control commands:
> found -1 linux/5.2.6-1
Bug #934304 [src:linux] linux-image-5.2.0-2-amd64: powertop aborts on version
5.2
Marked as found in versions linux/5.2.6-1.
--
934304: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=934304
Debian Bug Tracking System
Contact ow...@bugs.de
Control: found -1 linux/5.2.6-1
Dear Maintainer,
the bugreport https://bugs.debian.org/934292
seems about the same issue.
The issue can be reproduced by just accessing the file below.
root@debian:~# strace -f powertop
execve("/usr/sbin/powertop", ["powertop"], 0x7fff5df92d08 /* 11 vars */) = 0
As I rebooted the system after the abort, the abort is not seen in the log.
Attached is the relevant part of the log on the system, where the abort
happened.
ReinhardAug 09 09:00:41 apollon kernel: BUG: kernel NULL pointer dereference, address:
Aug 09 09:00:41 apollon kernel: #P
Package: src:linux
Version: 5.2.7-1
Severity: normal
Dear Maintainer,
starting with version 5.2.0-2, powertop aborts, version 4.19.0-5 is OK
-- Package-specific info:
** Version:
Linux version 5.2.0-2-amd64 (debian-kernel@lists.debian.org) (gcc version 8.3.0
(Debian 8.3.0-19)) #1 SMP Debian
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