From: Paul Mackerras <paulus@samba.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org,
Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [BUG] 2.6.23-rc3-mm1 Oops: Machine check, sig: 7 [#1]
Date: Fri, 24 Aug 2007 09:41:17 +1000 [thread overview]
Message-ID: <18126.6941.186345.839232@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <20070822090858.b8f62539.akpm@linux-foundation.org>
Andrew Morton writes:
> Dunno, it beats me. powerpc booted OK for me. Ben, have you been playing
> around in powerpc mmap code? How come the oops claims it died at
> kernel_execve+0x8/0x14 but the call trace points up into the vma management
> code?
The exception c01 in kernel_execve is just the system call entry. The
real problem is the machine check that happened in rb_insert_color,
called from __vma_link_rb.
However, a machine check is an imprecise exception, so whatever caused
the problem may have happened a little earlier than that. Most likely
it is due to an attempt to access a physical address where nothing
exists.
Paul.
prev parent reply other threads:[~2007-08-23 23:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-22 13:22 Kamalesh Babulal
2007-08-22 16:08 ` Andrew Morton
2007-08-22 17:50 ` Kamalesh Babulal
2007-08-23 7:42 ` Benjamin Herrenschmidt
2007-08-23 23:41 ` Paul Mackerras [this message]
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