Kernel error

hayf · 09-02-2011, 07:10 AM

Hello, i made a change to tcp stack and when launching the browser i get a kernel error.
Can anybody tell me what is the problem

error:

Quote:

Message from syslogd@prr at Sep 2 13:41:45 ...
kernel:[ 1536.337256] Oops: 0000 [#2] SMP

Message from syslogd@prr at Sep 2 13:41:45 ...
kernel:[ 1536.337259] last sysfs file: /sys/devices/pci0000:00/0000:00:14.1/host4/target4:0:0/4:0:0:0/block/sda/uevent

Message from syslogd@prr at Sep 2 13:41:45 ...
kernel:[ 1536.337371] Stack:

Message from syslogd@prr at Sep 2 13:41:45 ...
kernel:[ 1536.337387] Call Trace:

Message from syslogd@prr at Sep 2 13:41:45 ...
kernel:[ 1536.337434] Code: 8b 93 80 02 00 00 66 89 54 24 22 eb 3d 8b 93 80 02 00 00 66 89 54 24 22 8b 93 6c 02 00 00 89 54 24 24 eb 26 48 8b 93 58 02 00 00 <8b> 0a 89 4c 24 28 8b 52 04 89 54 24 2c eb 10 48 8d 4c 24 38 48

Message from syslogd@prr at Sep 2 13:41:45 ...
kernel:[ 1536.337472] CR2: 0000000000000000

smallpond · 09-02-2011, 01:48 PM

Oops can mean a number of things, but generally means you are mishandling memory: using a bad pointer, for example. Did you verify that this kernel builds and runs correctly without your change? How big a change did you make?

hayf · 09-05-2011, 02:50 AM

in fact what i made is adding a new tcp option that injects ipv6 address(or part of it) into the packet.
when this option is enabled, debian is not running and kernel is giving this error.
the kernel recompilation was successful.
is it a problem of memory allocation or that the pointer is not pointing correctly to an ipv6 address or smthg else?

Thanks!!

hayf · 09-05-2011, 06:59 AM

when dealing with ipv4 addresses only, the ipv6 address pointer can point to anything and this could be causing the kernel problem??