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From: "Philip Müller" <philm@manjaro.org>
To: linux-kernel@vger.kernel.org, Sudeep Holla <sudeep.holla@arm.com>,
	Guenter Roeck <linux@roeck-us.net>,
	manjaro-dev@manjaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
	Andre Przywara <andre.przywara@arm.com>,
	Borislav Petkov <bp@suse.de>
Subject: [linux41] regression with 'x86/cacheinfo: Move cacheinfo sysfs code to generic infrastructure' on AMD i686
Date: Sun, 26 Jul 2015 08:18:32 +0200
Message-ID: <55B47BB8.6080202@manjaro.org> (raw)
In-Reply-To: <55B16967.1040609@manjaro.org>

Hi Guenter, Sudeep,

It now came down to 'x86/cacheinfo: Move cacheinfo sysfs code to generic
infrastructure'[1] as you can see here[2].

The facts are:

- You can't boot on i686 only with more than one CPU core on AMD
hardware (x86_64 however works)
- Using Ubuntu config[3] it boots but creates an kernel >= 1 GB in size
on Manjaro
- By reverting 0d55ba4[4] the kernel boots.

So we have to find out what is causing this issue[5].

kind regards
Philip Müller
--------------------------
Manjaro Project-Lead

[1]
https://github.com/torvalds/linux/commit/0d55ba46bfbee64fd2b492b87bfe2ec172e7b056
[2]
https://raw.githubusercontent.com/philmmanjaro/linux41/master/git-bisect.txt
[3]
https://raw.githubusercontent.com/philmmanjaro/linux41/master/config.4.1.3-040103-generic
[4]
https://github.com/manjaro/packages-core/commit/f7b77f3e84295a6313a9181d520fb48e60453b64
[5] https://github.com/manjaro/packages-core/issues/14


On 24.07.2015 00:23, Philip Müller wrote:
> Hi all,
> 
> I started to test linux 4.1 series with rc6. However, I was never able
> to boot that kernel in i686 architecture. Trying it again with
> VirtualBox gave me more conclusions. Using one core it simply boots up.
> Using more than one CPU core it crashes with:
> 
> Failed to access perfctr msr (MSR c0010007 is 0)
> 
> task: f58e0000 ti: f58e8000 task.ti: f58e800
> EIP: 0060:[<c135a903>] EFLAGS: 00010206 CPU: 0
> EIP is at free_cache_attributes+0x83/0xd0
> EAX: 00000001 EBX: f589d46c ECX: 00000090 EDX: 360c2000
> ESI: 00000000 EDI: c1724a80 EBP: f58e9ec0 ESP: f58e9ea0
>  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
> CR0: 8005003b CR2: 000000ac CR3: 01731000 CR4: 000006d0
> 
> In more rich detail you can find that problem on my bug-tracker for
> Manjaro Linux:
> 
> https://github.com/manjaro/packages-core/issues/14
> 
> I just want to know if you are aware of it. With current 4.1.3 release I
> still face that issue ...
> 
> kind regards
> Philip Müller
> --------------------------
> Manjaro Project-Lead
> 


  reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-23 22:23 [linux41] Kernel panic at i686 Philip Müller
2015-07-26  6:18 ` Philip Müller [this message]
2015-07-26  8:13   ` [linux41] regression with 'x86/cacheinfo: Move cacheinfo sysfs code to generic infrastructure' on AMD i686 Thomas Gleixner
2015-07-26  8:41     ` Borislav Petkov
2015-07-26 10:54       ` Philip Müller
2015-07-26 14:42         ` Borislav Petkov
2015-07-26 15:59           ` Philip Müller
2015-07-26 16:11             ` Guenter Roeck
2015-09-16 23:52           ` Josh Boyer
2015-09-17  5:36             ` Philip Müller
2015-09-17  7:15             ` Borislav Petkov
2015-09-17 12:54               ` Greg KH
2015-07-27  7:58   ` [PATCH] cpu/cacheinfo: Fix teardown path Borislav Petkov
2015-07-27  8:56     ` Sudeep Holla
2015-07-27 11:10     ` Thomas Gleixner
2015-07-27 18:49       ` Philip Müller
2015-08-05 20:14     ` [tip:x86/urgent] x86/cpu/cacheinfo: " tip-bot for Borislav Petkov
2015-08-08  8:46     ` [PATCH] cpu/cacheinfo: " Borislav Petkov
2015-08-08 15:41       ` Greg KH
2015-08-08 18:23         ` Philip Müller
2015-08-08 19:42           ` Borislav Petkov
2015-08-08 19:47         ` Borislav Petkov
2015-09-13  7:03           ` Philip Müller

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