RE: [squid-users] Re. Squid 2.5 with WCCP2 (on Redhat 9)

No idea..

to be able to tell anything from that oops/panic you must decode it with
ksymoops.

Regards
Henrik

On Fri, 24 Oct 2003, Simon Vella wrote:

> Henrik,
>
> We decided to go for WCCPv1. I tried to use your module ip_wccp.c which
> compiled fine. However, after a few minutes working fine, the server starts
> producing this output below. Can you please specify which (in your opinion)
> is a working version of Redhat, and which kernel version?
>
> 10x
>
> Simon
>
> Oct 24 19:37:41 frodo kernel: recvmsg bug: copied FB63EC97 seq FB63F097
> Oct 24 19:37:41 frodo kernel: recvmsg bug: copied 8045ED68 seq 8045F168
> Oct 24 19:37:41 frodo kernel: recvmsg bug: copied FB63EC97 seq FB63F097
> Oct 24 19:38:07 frodo last message repeated 3975 times
> Oct 24 19:40:09 frodo shutdown: shutting down for system reboot
> Oct 24 19:40:26 frodo kernel: Unable to handle kernel NULL pointer
> dereference at virtual address 00000000
> Oct 24 19:40:26 frodo kernel: printing eip:
> Oct 24 19:40:26 frodo kernel: c0115473
> Oct 24 19:40:26 frodo kernel: *pde = 00000000
> Oct 24 19:40:26 frodo kernel: Oops: 0000
> Oct 24 19:40:26 frodo kernel: CPU: 0
> Oct 24 19:40:26 frodo kernel: EIP: 0010:[<c0115473>] Not tainted
> Oct 24 19:40:26 frodo kernel: EFLAGS: 00010016
> Oct 24 19:40:26 frodo kernel: eax: 00000000 ebx: f537b800 ecx: 00000001
> edx: 00000000
> Oct 24 19:40:26 frodo kernel: esi: ecd64364 edi: 00000003 ebp: f591ff7c
> esp: f591ff60
> Oct 24 19:40:26 frodo kernel: ds: 0018 es: 0018 ss: 0018
> Oct 24 19:40:26 frodo kernel: Process shutdown (pid: 747,
> stackpage=f591f000)
> Oct 24 19:40:26 frodo kernel: Stack: 00000000 c015007e 00000001 00000282
> f537b800 f537b864 f537b85c f537b800
> Oct 24 19:40:27 frodo kernel: c014ed63 ecd642c0 00000000 f537b800
> 00000000 00000001 bffffbc8 c014ef06
> Oct 24 19:40:27 frodo kernel: f537b800 00000000 c013afa4 00000000
> 00000000 f591e000 c013afff 00000000
> Oct 24 19:40:27 frodo kernel: Call Trace: [<c015007e>] [<c014ed63>]
> [<c014ef06>] [<c013afa4>] [<c013afff>]
> Oct 24 19:40:27 frodo kernel: [<c01090ff>]
> Oct 24 19:40:27 frodo kernel:
> Oct 24 19:40:27 frodo kernel: Code: 8b 02 85 c7 75 17 8b 1b 39 f3 75 f1 ff
> 75 f0 9d 83 c4 10 5b
> Oct 24 19:40:58 frodo shutdown: shutting down for system reboot
> Oct 24 19:40:58 frodo kernel: <1>Unable to handle kernel NULL pointer
> dereference at virtual address 00000000
> Oct 24 19:40:58 frodo kernel: printing eip:
> Oct 24 19:40:58 frodo kernel: c0115473
> Oct 24 19:40:58 frodo kernel: *pde = 00000000
> Oct 24 19:40:58 frodo kernel: Oops: 0000
> Oct 24 19:40:58 frodo kernel: CPU: 0
> Oct 24 19:40:58 frodo kernel: EIP: 0010:[<c0115473>] Not tainted
> Oct 24 19:40:58 frodo kernel: EFLAGS: 00010012
> Oct 24 19:40:58 frodo kernel: eax: 00000000 ebx: f537b800 ecx: 00000001
> edx: 00000000
> Oct 24 19:40:58 frodo kernel: esi: e76c62e4 edi: 00000003 ebp: f591ff7c
> esp: f591ff60
> Oct 24 19:40:58 frodo kernel: ds: 0018 es: 0018 ss: 0018
> Oct 24 19:40:58 frodo kernel: Process shutdown (pid: 751,
> stackpage=f591f000)
> Oct 24 19:40:58 frodo kernel: Stack: 00000000 c015007e 00000001 00000286
> f537b800 f537b864 f537b85c f537b800
> Oct 24 19:40:58 frodo kernel: c014ed63 e76c6240 00000000 f537b800
> 00000000 00000001 bffffbc8 c014ef06
> Oct 24 19:40:58 frodo kernel: f537b800 00000000 c013afa4 00000000
> 00000000 f591e000 c013afff 00000000
> Oct 24 19:40:58 frodo kernel: Call Trace: [<c015007e>] [<c014ed63>]
> [<c014ef06>] [<c013afa4>] [<c013afff>]
> Oct 24 19:40:58 frodo kernel: [<c01090ff>]
> Oct 24 19:40:58 frodo kernel:
> Oct 24 19:40:58 frodo kernel: Code: 8b 02 85 c7 75 17 8b 1b 39 f3 75 f1 ff
> 75 f0 9d 83 c4 10 5b
> Oct 24 19:40:59 frodo shutdown: shutting down for system reboot
>
> -----Original Message-----
> From: Henrik Nordstrom [mailto:hno@squid-cache.org]
> Sent: Tuesday, October 21, 2003 12:12 PM
> To: Simon Vella
> Cc: squid-users@squid-cache.org
> Subject: Re: [squid-users] Re. Squid 2.5 with WCCP2 (on Redhat 9)
>
>
> On Tue, 21 Oct 2003, Simon Vella wrote:
>
> > a) The WCCPv2 patch (found at
> > http://www.swelltech.com/pengies/joe/patches/squid-2.2.wccp2.patch) should
> > work with Squid 2.5, right? Is there another patch for Squid 2.5 to
> support
> > WCCPv2?
>
> The patch found at http://devel.squid-cache.org/ probably has a higher
> likelyhood of working.
>
> > b) The WCCPv2 patch for Squid makes squid talk WCCPv2 with the routers. So
> > why do we need the ip_wccp.o module for the kernel?
>
> As WCCPv1, WCCPv2 consists of two protocols
>
> a) WCCPv2 UDP protocol used for announcements between the cache and the
> router
>
> b) WCCPv2 GRE protocol used for client traffic forwarded by the router to
> the cache. This GRE protocol is different from the normal GRE IP tunneling
> protocol and therefore requires a different GRE driver in the kernel. The
> ip_wccp module is one such driver. Please note that there exists two
> different ip_wccp modules, one for WCCPv1 and one for WCCPv2. It is
> important you use the correct one for the WCCP version you are using.
>
> > d) The Linux box must be set up to use ip_tables to redirect the HTTP
> > requests received through the GRE tunnel, to the squid port (8080 in our
> > case). The destination IP is not changed, so does the Squid still accept
> the
> > HTTP packet because it is set in HTTP_accelerator mode?
>
> Yes.
>
> Regards
> Henrik
>
>
Received on Fri Oct 24 2003 - 12:55:05 MDT