From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <00ca01c58e1f$fef44980$cd01a8c0@DESIGNLAB> From: "Bogdan Antonovici" To: "Dan Malek" References: <1121959795.800.18.camel@rd-lab> <1a928a85f53f5dcd972161356611a312@embeddededge.com> Date: Thu, 21 Jul 2005 13:14:12 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00C7_01C58DF6.15FF47D0" Cc: linuxppc-dev , ppckernel , linuxppc-embedded@ozlabs.org Subject: Re: swap_dup: Bad swap file entry 00480020 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. ------=_NextPart_000_00C7_01C58DF6.15FF47D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I wasn't so worry about the driver because the same driver worked with a = different application without seeing these kind of messages or oopses. Dan, from your answer i understand that the swap code discovers a = corruption in tables but why is swap code run when swap wasn't = activated? I will try to have a look on the driver code. Bogdan ----- Original Message -----=20 From: Dan Malek=20 To: bogdan antonovici=20 Cc: linuxppc-dev ; linuxppc-embedded@ozlabs.org ; ppckernel=20 Sent: Thursday, July 21, 2005 12:59 PM Subject: Re: swap_dup: Bad swap file entry 00480020 On Jul 21, 2005, at 11:29 AM, bogdan antonovici wrote: > At the time of swap messages i was running a proprietary driver, my > application and few daemons. Looks like your driver may have written over some of the page tables in the kernel space. > I look on the net for some clues but it's quite confusing, i noticed > many emails on swap_dup/swap_free error messages but i couldn't = figure > out what should i search for. Those messages are likely due to a bug with swapping to disk that has been in some 2.4 kernels, but I don't believe that is the case here, since you don't have a disk or swapping enabled. -- Dan ------=_NextPart_000_00C7_01C58DF6.15FF47D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I wasn't so worry about the driver = because the same=20 driver worked with a different application without seeing these kind of = messages=20 or oopses.
Dan, from your answer i understand that = the swap=20 code discovers a corruption in tables but why is swap code run when swap = wasn't=20 activated?
I will try to have a look on the driver = code.
 
Bogdan
----- Original Message -----
From:=20 Dan Malek=20
Cc: linuxppc-dev ; linuxppc-embedded@ozlabs.org= ;=20 ppckernel
Sent: Thursday, July 21, 2005 = 12:59=20 PM
Subject: Re: swap_dup: Bad swap = file=20 entry 00480020


On Jul 21, 2005, at 11:29 AM, bogdan antonovici=20 wrote:

> At the time of swap messages i was running a = proprietary=20 driver, my
> application and few daemons.

Looks like your = driver=20 may have written over some of the page
tables in the kernel=20 space.

> I look on the net for some clues but it's quite = confusing,=20 i noticed
> many emails on swap_dup/swap_free error messages but = i=20 couldn't figure
> out what should i search for.

Those = messages=20 are likely due to a bug with swapping to disk
that has been in some = 2.4=20 kernels, but I don't believe that is
the case here, since you don't = have a=20 disk or swapping enabled.


-- = Dan
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