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Date: Sat, 8 Mar 2003 16:47:24 +0100 (MET)
From: Szakacsits Szabolcs <szaka@sienet.hu>
To: "Randy.Dunlap" <rddunlap@osdl.org>
cc: Anton Altaparmakov <aia21@cantab.net>, <linux-kernel@vger.kernel.org>,
       <linux-ntfs-dev@lists.sourceforge.net>
Subject: Re: [Linux-NTFS-Dev] ntfs OOPS (2.5.63)
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On Sat, 8 Mar 2003, Szakacsits Szabolcs wrote:
>
>  EFLAGS: 00010282
>  eax: f6c0f080   ebx: 0000416d   ecx: 00010282 edx: f6c0f0f8
>  esi: c040b078   edi: f6c0f0f8   ebp: f6dd1dbc esp: f6dd1db4
>  ds: 007b   es: 007b   ss: 0068
>
>  3c0:       b9 06 00 00 00          mov    $0x6,%ecx
>  ... not important ...
>  3cc:       89 d7                   mov    %edx,%edi
>  3ce:       89 55 f4                mov    %edx,0xfffffff4(%ebp)
>  3d1:       f3 a5                   repz movsl %ds:(%esi),%es:(%edi)
>  3d3:       8d 50 78                lea    0x78(%eax),%edx
>  3d6:       8b 4d f4                mov    0xfffffff4(%ebp),%ecx
>  3d9:       89 51 18                mov    %edx,0x18(%ecx)  ## OOPS ##
>
> So %ecx should be %edi-24 = f6c0f0e0, instead it's EFLAGS. Oops [indeed].
> %ebp value is correct, I checked. So it seems a hardware, strong
> radiation or an interrupt that didn't restore ecx.

Actually the "interrupt" did a pushfl and overwrote 0xfffffff4(%ebp).
esp = 0xfffffff4(%ebp). For kernel code the compiler shouldn't have
generated the above code.

	Szaka

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