From: Andi Kleen <andi@firstfloor.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Yinghai Lu" <yhlu.kernel@gmail.com>,
"Ingo Molnar" <mingo@elte.hu>,
"the arch/x86 maintainers" <x86@kernel.org>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: Re: ioremap panic
Date: Wed, 20 Aug 2008 12:08:05 +0200 [thread overview]
Message-ID: <871w0kyp6i.fsf@basil.nowhere.org> (raw)
In-Reply-To: <20080819235106.d6776abc.akpm@linux-foundation.org> (Andrew Morton's message of "Tue, 19 Aug 2008 23:51:06 -0700")
Andrew Morton <akpm@linux-foundation.org> writes:
>
> Please work out what address qla2x00_probe_one() passed into ioremap(),
Note that ioremap doesn't get a virtual address, but a bus/phys one.
The virtual address checked in the BUG above comes internally
out of vmalloc's address space allocation.
> then see if you can work out what was already at that virtual address
> (/proc/iomem, dmesg output, etc).
The bug is more likely that either the kernel page tables or the
vmalloc vmlist are inconsistent somehow. In particularly it looks
like vmalloc gave out an address for ioremap on which there was
already a mapping.
I doubt it is qla2x00's fault.
-Andi
next prev parent reply other threads:[~2008-08-20 10:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-17 3:49 ioremap panic Yinghai Lu
2008-08-20 6:51 ` Andrew Morton
2008-08-20 10:08 ` Andi Kleen [this message]
2008-08-20 17:09 ` Yinghai Lu
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