Bug 1378709 - Debugging dracut on shutdown does not work
Summary: Debugging dracut on shutdown does not work
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: 24
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Lukas Vrabec
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-09-23 07:29 UTC by Oleg Samarin
Modified: 2017-08-08 17:35 UTC (History)
10 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-08-08 17:35:20 UTC
Type: Bug


Attachments (Terms of Use)
The screenshot of 'shutdown -H now' (4.85 KB, image/png)
2016-09-23 07:29 UTC, Oleg Samarin
no flags Details
dracut log after 'setenforce 0' (1.80 KB, text/plain)
2016-09-23 18:21 UTC, Oleg Samarin
no flags Details

Description Oleg Samarin 2016-09-23 07:29:11 UTC
Created attachment 1203999 [details]
The screenshot of 'shutdown -H now'

Description of problem:

The recommended way of dropping shell during shutdown, described at https://www.kernel.org/pub/linux/utils/boot/dracut/dracut.html#debugging-dracut
doesn't work:
After creating /run/initramfs/etc/cmdline.d/debug.conf dracut can not read it and does not give a shell during shutdown process


Version-Release number of selected component (if applicable):

dracut-044-20.fc24.x86_64
kernel-4.7.4-200.fc24.x86_64
selinux-policy-3.13.1-191.16.fc24.noarch
selinux-policy-targeted-3.13.1-191.16.fc24.noarch


How reproducible:
Always


Steps to Reproduce:
1. Install F24
2. Enter the wollowing commands in the terminal window

mkdir -p /run/initramfs/etc/cmdline.d
echo "rd.debug rd.break=pre-shutdown rd.break=shutdown" >/run/initramfs/etc/cmdline.d/debug.conf
touch /run/initramfs/.need_shutdown
shutdown -H now

Actual results:

System haltes without dropping into shell

We can see the following message on the screen:

/lib/dracut-lib.sh: line 138: /etc/cmdline.d/debug.conf: Permission denied
Halting
reboot: System halted

Expected results:

dropping into shell at pre-shotdown and shutdown

Additional info:

Comment 1 Oleg Samarin 2016-09-23 07:38:32 UTC
If I boot with 'enforcing=0' kernel option, then dracut gives a shell during shutdown. So it is similar to a selinux related issue.

Comment 2 Oleg Samarin 2016-09-23 18:21:09 UTC
Created attachment 1204247 [details]
dracut log after 'setenforce 0'

If I run 'setenforce 0' before shutdown, dracut successfully gives me the emergency shell and this is it's log

How to fix selinux context in initramfs?

Comment 3 Harald Hoyer 2016-10-12 12:08:07 UTC
(In reply to Oleg Samarin from comment #2)
> Created attachment 1204247 [details]
> dracut log after 'setenforce 0'
> 
> If I run 'setenforce 0' before shutdown, dracut successfully gives me the
> emergency shell and this is it's log
> 
> How to fix selinux context in initramfs?

good question... reassigning to selinux-policy for advice

Comment 4 Fedora End Of Life 2017-07-25 23:11:55 UTC
This message is a reminder that Fedora 24 is nearing its end of life.
Approximately 2 (two) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 24. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
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Comment 5 Fedora End Of Life 2017-08-08 17:35:20 UTC
Fedora 24 changed to end-of-life (EOL) status on 2017-08-08. Fedora 24 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

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