Bug 726701

Summary: slowpath warning with stacktrace from efi_enter_virtual_mode / __ioremap_caller
Product: [Fedora] Fedora Reporter: Mads Kiilerich <mads>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 16CC: aquini, collura, gansalmon, itamar, jonathan, jwboyer, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: kernel-3.0.1-3.fc16 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-08-22 14:51:24 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Attachments:
Description Flags
dmesg
none
dmesg from 3.0.0-4.1.fc16.i686 none

Description Mads Kiilerich 2011-07-29 14:43:18 UTC
Created attachment 515894 [details]
dmesg

[    0.001163] ------------[ cut here ]------------
[    0.001172] WARNING: at arch/x86/mm/ioremap.c:104 __ioremap_caller+0xa7/0x290()
[    0.001175] Hardware name: Macmini2,1
[    0.001177] Modules linked in:
[    0.001182] Pid: 0, comm: swapper Not tainted 3.0.0-1.fc16.i686 #1
[    0.001185] Call Trace:
[    0.001192]  [<c083331f>] ? printk+0x2d/0x2f
[    0.001198]  [<c043f040>] warn_slowpath_common+0x7c/0x91
[    0.001203]  [<c0421d67>] ? __ioremap_caller+0xa7/0x290
[    0.001207]  [<c0421d67>] ? __ioremap_caller+0xa7/0x290
[    0.001211]  [<c043f077>] warn_slowpath_null+0x22/0x24
[    0.001216]  [<c0421d67>] __ioremap_caller+0xa7/0x290
[    0.001223]  [<c0469064>] ? trace_hardirqs_off+0xb/0xd
[    0.001228]  [<c045db31>] ? local_clock+0x32/0x49
[    0.001233]  [<c0469534>] ? lock_release_holdtime.part.8+0x5d/0x63
[    0.001238]  [<c04686bc>] ? arch_local_irq_restore+0x9/0xb
[    0.001243]  [<c0421f82>] ioremap_cache+0x16/0x18
[    0.001249]  [<c0b67953>] ? efi_enter_virtual_mode+0x147/0x36f
[    0.001254]  [<c0b67953>] efi_enter_virtual_mode+0x147/0x36f
[    0.001261]  [<c0b55727>] start_kernel+0x2fd/0x376
[    0.001265]  [<c0b551b3>] ? loglevel+0x18/0x18
[    0.001270]  [<c0b550a9>] i386_start_kernel+0xa9/0xaf
[    0.001285] ---[ end trace a7919e7f17c0a725 ]---

kernel-3.0.0-1.fc16.i686 in EFI mode (obviuosly)

I noticed this occured after
Kernel-defined memdesc doesn't match the one from EFI!

Comment 1 Josh Boyer 2011-08-04 19:21:23 UTC
Could you try this scratch build and see if you get the same oops:

http://koji.fedoraproject.org/koji/taskinfo?taskID=3252673

Comment 2 Mads Kiilerich 2011-08-05 12:29:33 UTC
Created attachment 516890 [details]
dmesg from 3.0.0-4.1.fc16.i686

Yes, it seems like that fixed it.

Comment 3 Josh Boyer 2011-08-05 12:35:46 UTC
(In reply to comment #2)
> Created attachment 516890 [details]
> dmesg from 3.0.0-4.1.fc16.i686
> 
> Yes, it seems like that fixed it.

Excellent.  Thanks for testing.  I'll get this added into a kernel today.

Comment 4 Fedora Update System 2011-08-09 00:05:07 UTC
kernel-3.0.1-3.fc16 has been submitted as an update for Fedora 16.
https://admin.fedoraproject.org/updates/kernel-3.0.1-3.fc16

Comment 5 Fedora Update System 2011-08-09 02:53:33 UTC
Package kernel-3.0.1-3.fc16:
* should fix your issue,
* was pushed to the Fedora 16 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing kernel-3.0.1-3.fc16'
as soon as you are able to, then reboot.
Please go to the following url:
https://admin.fedoraproject.org/updates/kernel-3.0.1-3.fc16
then log in and leave karma (feedback).

Comment 6 Fedora Update System 2011-08-22 14:50:34 UTC
kernel-3.0.1-3.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.