linux-kernel - Re: sparc64, mm BUG in 3.9-rc8

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Message-Id: <20130422.185745.546880614466260395.davem@davemloft.net>
Date:	Mon, 22 Apr 2013 18:57:45 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	mroos@...ux.ee
Cc:	linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org
Subject: Re: sparc64, mm BUG in 3.9-rc8

From: Meelis Roos <mroos@...ux.ee>
Date: Tue, 23 Apr 2013 00:19:49 +0300 (EEST)

>> > Hello, I got a non-booting Sun E420R (sparc64) with 3.9-rc8: BUG-s in 
>> > mm/slub.c:925 and mm/memory.c:1267 (the latter keeps scrolling until 
>> > other things break and panic comes from trying to kill init). This is 
>> > reproducible. Same machine runs 3.9.0-rc7-00004-gbb33db7 successfully.
>> > Configuration is below.
>> 
>> It's certainly a bug in the TLB shootdown fix, please verify that
>> reverting the following fixes things:
>> 
>> >From f36391d2790d04993f48da6a45810033a2cdf847 Mon Sep 17 00:00:00 2001
>> From: "David S. Miller" <davem@...emloft.net>
>> Date: Fri, 19 Apr 2013 17:26:26 -0400
>> Subject: [PATCH] sparc64: Fix race in TLB batch processing.
> 
> Yes, reverting that makes it work again.

Thanks, could you post a prtconf dump from this machine?  I'll
add it to the prtconf GIT repo as well.
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