linux-kernel - Re: kernel BUG at arch/x86_64/mm/../../i386/mm/hugetlbpage.c:140!

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Message-ID: <20070306201932.GC18774@holomorphy.com>
Date:	Tue, 6 Mar 2007 12:19:32 -0800
From:	Bill Irwin <bill.irwin@...cle.com>
To:	"Alexander Y. Fomichev" <gluk@...4.ru>
Cc:	Bill Irwin <bill.irwin@...cle.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	admin@...t.net.ru
Subject: Re: kernel BUG at arch/x86_64/mm/../../i386/mm/hugetlbpage.c:140!

On Saturday 03 March 2007, Bill Irwin wrote:
>> If you have a known-working kernel version, git-bisect might help you
>> track down where it was introduced. Given the messages prior to the
>> hugetlbpage.c BUG_ON I'd say that this is something else besides the
>> specific code listed by line number, 

On Tue, Mar 06, 2007 at 03:45:23PM +0300, Alexander Y. Fomichev wrote:
> Nop, seems like it is hugetlb bug fixed by Adam 
> commit 516dffdcd8827a40532798602830dfcfc672294c
> [PATCH] Fix get_unmapped_area and fsync for hugetlb shm segments
> I've disregard it thoughtlessly so Adam marks it specific for powerpc/ia64.
> (hmm.. i donno realy why, huge pages should be alined anyway and if i 
> understend it correctly it may not be if is_file_hugepages() fails)
> As of "junk" just before the BUG this again IIUC because o-direct staff
> catches this issue before hugetlb.

I'm not terribly surprised. The issue Adam fixed is relatively easily
triggered. Bisecting probably wouldn't have been useful, sorry.


-- wli
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