[3.12][Regression] ACPI / processor: Use common hotplug infrastructure

v3.11 Joseph Salisbury 2 participants 5 messages Nov 15, 2013 ACPI

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Joseph Salisbury

author

2013-11-15 17:44 UTC #0 lore raw

Hi Rafael,

A kernel bug affecting several users was opened against Ubuntu[0]. After a bisect, it was found the following commit introduced the regression:

commit ac212b6980d8d5eda705864fc5a8ecddc6d6eacc
Author: Rafael J. Wysocki <[email protected]>
Date: Fri May 3 00:26:22 2013 +0200

ACPI / processor: Use common hotplug infrastructure

The regression was introduced as of v3.11-rc1.

This commit doesn't revert cleanly in 3.12, and requires the revert of other commits as well. I wanted to get your feedback since you are the author.

Thanks,

Joe

http://pad.lv/1237336

Rafael J. Wysocki

2013-11-15 22:42 UTC #1 lore raw

Quoted 9 lines · Joseph Salisbury

Hi Rafael,
A kernel bug affecting several users was opened against Ubuntu[0]. After a bisect, it was found the following commit introduced the regression:
commit ac212b6980d8d5eda705864fc5a8ecddc6d6eacc
Author: Rafael J. Wysocki <[email protected]>
Date: Fri May 3 00:26:22 2013 +0200

Quoted 7 lines

ACPI / processor: Use common hotplug infrastructure
The regression was introduced as of v3.11-rc1.
This commit doesn't revert cleanly in 3.12, and requires the revert of other commits as well. I wanted to get your feedback since you are the author.

Well, that commit has nothing to do with PCMCIA, so I'm not sure how the breakage is related to it.

Moreover, comment #8 reports 3.11.0-11.17 as working and the change you're asking about should be in that kernel as well.

Thanks!

Signature · 2 lines

I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.

Rafael J. Wysocki

2013-11-15 22:48 UTC #2 lore raw

Quoted 18 lines · Rafael J. Wysocki

Quoted 9 lines · Joseph Salisbury
Hi Rafael,
A kernel bug affecting several users was opened against Ubuntu[0]. After a bisect, it was found the following commit introduced the regression:
commit ac212b6980d8d5eda705864fc5a8ecddc6d6eacc
Author: Rafael J. Wysocki <[email protected]>
Date: Fri May 3 00:26:22 2013 +0200
Quoted 7 lines
ACPI / processor: Use common hotplug infrastructure
The regression was introduced as of v3.11-rc1.
This commit doesn't revert cleanly in 3.12, and requires the revert of other commits as well. I wanted to get your feedback since you are the author.

Quoted 5 lines

Well, that commit has nothing to do with PCMCIA, so I'm not sure how the breakage is related to it.
Moreover, comment #8 reports 3.11.0-11.17 as working and the change you're asking about should be in that kernel as well.

Ah, so that was bogus.

Well, I'm still not sure how the commit in question may affect PCMCIA. I have a test machine with PCMCIA and it boots correctly with 3.11+.

Thanks!

Signature · 2 lines

I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.

Rafael J. Wysocki

2013-11-15 23:03 UTC #3 lore raw

Quoted 22 lines · Rafael J. Wysocki

Quoted 21 lines · Rafael J. Wysocki
Quoted 9 lines · Joseph Salisbury
Hi Rafael,
A kernel bug affecting several users was opened against Ubuntu[0]. After a bisect, it was found the following commit introduced the regression:
commit ac212b6980d8d5eda705864fc5a8ecddc6d6eacc
Author: Rafael J. Wysocki <[email protected]>
Date: Fri May 3 00:26:22 2013 +0200
Quoted 7 lines
ACPI / processor: Use common hotplug infrastructure
The regression was introduced as of v3.11-rc1.
This commit doesn't revert cleanly in 3.12, and requires the revert of other commits as well. I wanted to get your feedback since you are the author.
Well, that commit has nothing to do with PCMCIA, so I'm not sure how the breakage is related to it.

Quoted 7 lines

Quoted 2 lines
Moreover, comment #8 reports 3.11.0-11.17 as working and the change you're asking about should be in that kernel as well.
Ah, so that was bogus.
Well, I'm still not sure how the commit in question may affect PCMCIA. I have a test machine with PCMCIA and it boots correctly with 3.11+.

The bisect could just trip over a different bug in that commit that was fixed later.

Moreover, comment #70 indicates that 3.11.0-11-generic works correctly for someone.

I'm also unsure what comment #43 means.

And I wonder if the reported who "bisected" this can boot without PCMCIA?

Rafael

Rafael J. Wysocki

2013-11-15 23:11 UTC #4 lore raw

Quoted 34 lines · Rafael J. Wysocki

Quoted 22 lines · Rafael J. Wysocki
Quoted 21 lines · Rafael J. Wysocki
Quoted 9 lines · Joseph Salisbury
Hi Rafael,
A kernel bug affecting several users was opened against Ubuntu[0]. After a bisect, it was found the following commit introduced the regression:
commit ac212b6980d8d5eda705864fc5a8ecddc6d6eacc
Author: Rafael J. Wysocki <[email protected]>
Date: Fri May 3 00:26:22 2013 +0200
Quoted 7 lines
ACPI / processor: Use common hotplug infrastructure
The regression was introduced as of v3.11-rc1.
This commit doesn't revert cleanly in 3.12, and requires the revert of other commits as well. I wanted to get your feedback since you are the author.
Well, that commit has nothing to do with PCMCIA, so I'm not sure how the breakage is related to it.
Quoted 7 lines
Quoted 2 lines
Moreover, comment #8 reports 3.11.0-11.17 as working and the change you're asking about should be in that kernel as well.
Ah, so that was bogus.
Well, I'm still not sure how the commit in question may affect PCMCIA. I have a test machine with PCMCIA and it boots correctly with 3.11+.
The bisect could just trip over a different bug in that commit that was fixed later.

Quoted 6 lines

Moreover, comment #70 indicates that 3.11.0-11-generic works correctly for someone.
I'm also unsure what comment #43 means.
And I wonder if the reported who "bisected" this can boot without PCMCIA?

One more thing. Comment #32 says that the reporter could not reproduce the problem without "the -extras package which contains the PCMCIA drivers." So I'm wondering why exactly the PCMCIA drivers are in that package?

Rafael