From: torvalds@transmeta.com (Linus Torvalds)
To: linux-kernel@vger.kernel.org
Subject: Re: [oops] linux-2.4.14-pre2 - __remove_from_queues+14/28
Date: Sat, 27 Oct 2001 20:07:43 +0000 (UTC) [thread overview]
Message-ID: <9rf46f$3ig$1@penguin.transmeta.com> (raw)
In-Reply-To: <20011027144624.A11364@lnuxlab.ath.cx>
In article <20011027144624.A11364@lnuxlab.ath.cx>,
khromy <khromy@lnuxlab.ath.cx> wrote:
>If you need more info, let me know.
Have you had any memory trouble or similar with this machine?
It looks very much like a single-bit error:
>Unable to handle kernel paging request at virtual address 00100000
>c012e694
>*pde = 00000000
>Oops: 0002
>CPU: 0
>EIP: 0010:[<c012e694>] Not tainted
>Using defaults from ksymoops -t elf32-i386 -a i386
>EFLAGS: 00010246
>eax: 00000000 ebx: c3135920 ecx: c3135920 edx: 00100000
>esi: c3135a40 edi: c3135a40 ebp: c10c4bc0 esp: c1311f2c
Here "edx" appears to be bh->b_pprev pointer, which can quite validly be
NULL for a non-hashed page.
So a value of all zeroes, or a kernel pointer value (ie 0xC.....) would
be valid, but 0x00100000 is not.
It doesn't have to be bad memory, of course - it could easily be a wild
pointer and a bit set operation.. But.
Linus
prev parent reply other threads:[~2001-10-27 20:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-27 18:46 [oops] linux-2.4.14-pre2 - __remove_from_queues+14/28 khromy
2001-10-27 20:07 ` Linus Torvalds [this message]
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