Note: This is a public test instance of Red Hat Bugzilla. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback at bugzilla.redhat.com.
Bug 1311685 - no modules loaded after boot: Unknown symbol mcount (err 0)
Summary: no modules loaded after boot: Unknown symbol mcount (err 0)
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: rawhide
Hardware: ppc64
OS: Linux
medium
high
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: PPCTracker F-ExcludeArch-ppc64le, PPC64LETracker
TreeView+ depends on / blocked
 
Reported: 2016-02-24 18:05 UTC by Karsten Hopp
Modified: 2016-04-09 17:16 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-04-09 17:16:01 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)
dmesg output (48.97 KB, text/plain)
2016-02-24 18:05 UTC, Karsten Hopp
no flags Details

Description Karsten Hopp 2016-02-24 18:05:32 UTC
Created attachment 1130286 [details]
dmesg output

Description of problem:
kernel-4.5.0-0.rc4.git3.1.fc24 on a tyan-openpower system can't load any modules, each one complains about a missing symbol mcount.

[    2.198813] usb_storage: Unknown symbol mcount (err 0)
[    2.328162] usb_storage: Unknown symbol mcount (err 0)
[    2.840449] pps_core: Unknown symbol mcount (err 0)
....

Output of dmesg attached

Version-Release number of selected component (if applicable):
kernel-4.5.0-0.rc4.git3.1.fc24.ppc64

How reproducible:
always

Actual results:
no modules loaded

Expected results:


Additional info:
Output of dmesg attached

Comment 1 Karsten Hopp 2016-02-24 18:07:54 UTC
The same kernel works just fine on an IBM Power-8 machine

Comment 2 Dan Horák 2016-02-24 20:42:04 UTC
I suspect the problem I mentioned couple days ago on IRC about network modules on s390x is the same as here.

Comment 3 Dan Horák 2016-02-25 19:20:03 UTC
(In reply to Dan Horák from comment #2)
> I suspect the problem I mentioned couple days ago on IRC about network
> modules on s390x is the same as here.

So my memory was wrong, kernel 4.5.0-0.rc2.git3.1.fc24 fails on s390x with

         Mounting /sysroot...
[    2.473809] SGI XFS with ACLs, security attributes, no debug enabled
[    2.483961] XFS (dm-0): Mounting V5 Filesystem
[    2.643433] XFS (dm-0): Torn write (CRC failure) detected at log block 0x3328
. Truncating head block from 0x3338.
[    2.736211] XFS (dm-0): failed to locate log tail
[    2.736220] XFS (dm-0): log mount/recovery failed: error -74
[    2.737130] XFS (dm-0): log mount failed
[    2.738982] mount (1113) used greatest stack depth: 11040 bytes left
[ [1;31mFAILED [0m] Failed to mount /sysroot.
See 'systemctl status sysroot.mount' for details.

If reproducable with latest 4.5 kernel I'll open a separate bug report.

Comment 4 Peter Robinson 2016-04-09 17:16:01 UTC
Presumably this is working with 4.5.0 GA


Note You need to log in before you can comment on or make changes to this bug.