Bug 1400467 - Kernel panic - not syncing : VFS : Unable to mount root fs on unknown-block(0,0)
Summary: Kernel panic - not syncing : VFS : Unable to mount root fs on unknown-block(0,0)
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: dracut
Version: 25
Hardware: x86_64
OS: Linux
unspecified
urgent
Target Milestone: ---
Assignee: dracut-maint-list
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-12-01 10:11 UTC by Chrit van Ewijk
Modified: 2019-01-09 12:54 UTC (History)
12 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-12-12 10:06:25 UTC
Type: Bug


Attachments (Terms of Use)
Kernel panic messages when booting Fedora (4.8.10-300. fc25.x86_64) 25 (147.58 KB, image/jpeg)
2016-12-01 10:11 UTC, Chrit van Ewijk
no flags Details
Boot menu on my PC (82.36 KB, image/jpeg)
2016-12-01 10:14 UTC, Chrit van Ewijk
no flags Details
result of 'ls -l /boot/initramfs-*' (284 bytes, text/plain)
2016-12-01 15:20 UTC, Chrit van Ewijk
no flags Details
print of '/boot/grub2/grub.cfg' (6.77 KB, text/plain)
2016-12-01 15:22 UTC, Chrit van Ewijk
no flags Details
Selecting 4.8.10-300 fc25 still does not boot. (36.86 KB, image/jpeg)
2016-12-08 22:00 UTC, Chrit van Ewijk
no flags Details
But the new 4.8.11-300 kernel does boot correctly (23.45 KB, image/jpeg)
2016-12-08 22:03 UTC, Chrit van Ewijk
no flags Details
Proof that 4.8.11-300 boots correctly (20.01 KB, image/jpeg)
2016-12-08 22:07 UTC, Chrit van Ewijk
no flags Details
Better view-able boot error messages of 4.8.10-300 fc25 (135.96 KB, image/jpeg)
2016-12-08 22:22 UTC, Chrit van Ewijk
no flags Details
Dracut --regenerate-all output (399 bytes, text/plain)
2017-01-18 16:15 UTC, Chrit van Ewijk
no flags Details

Description Chrit van Ewijk 2016-12-01 10:11:10 UTC
Created attachment 1226726 [details]
Kernel panic messages when booting Fedora (4.8.10-300. fc25.x86_64) 25

Description of problem : Kernel panic - not syncing : VFS : Unable to mount root fs on unknown-block(0,0)


Version-Release number of selected component (if applicable): Fedora (4.8.10-300. fc25.x86_64) 25


How reproducible: The problem first occurred after running "dnf upgrade" from the earlier Fedoara version Fedora (4.8.8-300. fc25.x86_64) 25. 
Every boot with the new 4.8.10 results in hanging , see attachment . 
Booting with the older 4.8.8 still works well. 


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

Comment 1 Chrit van Ewijk 2016-12-01 10:14:05 UTC
Created attachment 1226727 [details]
Boot menu on my PC

Comment 2 Josh Boyer 2016-12-01 12:26:27 UTC
99% of the time this is because the corresponding initramfs isn't being loaded for the kernel.  Please attach your grub configuration file and the output of 'ls -l /boot/initramfs-*'

Comment 3 Chrit van Ewijk 2016-12-01 15:20:47 UTC
Created attachment 1226856 [details]
result of  'ls -l /boot/initramfs-*'

Comment 4 Chrit van Ewijk 2016-12-01 15:22:48 UTC
Created attachment 1226857 [details]
print of '/boot/grub2/grub.cfg'

Comment 5 Josh Boyer 2016-12-01 16:09:15 UTC
Yep, you're missing the corresponding initramfs (and the line to load it in grub).  This happens from time to time and is likely a dracut issue.

Comment 6 Chrit van Ewijk 2016-12-08 22:00:35 UTC
Created attachment 1229661 [details]
Selecting 4.8.10-300 fc25 still does not boot.

Selecting 4.8.10-330 still does not boot.

Comment 7 Chrit van Ewijk 2016-12-08 22:03:17 UTC
Created attachment 1229662 [details]
But the new 4.8.11-300 kernel does boot correctly

But selecting the new 3.8.11-300 kernel does boot correctly.

Comment 8 Chrit van Ewijk 2016-12-08 22:07:07 UTC
Created attachment 1229669 [details]
Proof that 4.8.11-300 boots correctly

Proof that 4.8.11-300 boots correctly.

So the immediate problem is solved so far as i am concerned. 

--Chrit

Comment 9 Chrit van Ewijk 2016-12-08 22:22:41 UTC
Created attachment 1229670 [details]
Better view-able  boot error messages of 4.8.10-300 fc25

Comment 10 Harald Hoyer 2017-01-18 10:43:22 UTC
try:

# dracut --regenerate-all

and attach the output please

Comment 11 Chrit van Ewijk 2017-01-18 16:15:28 UTC
Created attachment 1242215 [details]
Dracut --regenerate-all output

Comment 12 Harald Hoyer 2017-01-30 09:02:20 UTC
sorry, add the "--force" option of course.

Comment 13 Fedora End Of Life 2017-11-16 19:29:22 UTC
This message is a reminder that Fedora 25 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 25. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '25'.

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version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's
lifetime, sometimes those efforts are overtaken by events. Often a
more recent Fedora release includes newer upstream software that fixes
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Comment 14 Fedora End Of Life 2017-12-12 10:06:25 UTC
Fedora 25 changed to end-of-life (EOL) status on 2017-12-12. Fedora 25 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.

If you can reproduce this bug against a currently maintained version of
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