Hi, I have made some changes to the memory management part of the kernel as an experiment. Now when I boot into that kernel and start some heavy processes (which cause paging), the kernel hangs. I can't even type anything. I have gone through the 'paper on debugging kernel oops or hang' (http://mail.nl.linux.org/kernelnewbies/2003-08/msg00347.html) In this paper Erik says that to get the stack trace we can type 'Alt-SysRq-t' which prints the stack trace and when it's not possible to type anything, then it's best to use serial port + console. he says the config for lilo would be: console=ttyS0,9600 console=tty0 As I have grub I am using the following lines: default=0 timeout=15 title Fedora (2.6.27.4) root (hd0,0) kernel /boot/vmlinuz-2.6.27.4 ro root=/dev/sda1 initrd /boot/initrd-2.6.27.4.img serial --unit=0 --speed=9600 --word=8 --parity=no --stop=1 terminal --dumb --timeout=10 serial console CONFIG_MAGIC_SYSRQ was enabled in my config file. My test kernel is running inside a Virtual machine (VM) (VMware), with its serial port 0 redirected to a file. VM OS: fedora Core 9 with modified kernel 2.6.27.4 Host OS: ubuntu hardy 2.6.24.3 My problem is I am not getting any kind of output in the file to which I redirected the serial port of the VM except a bunch of "Press any key to continue .. " messages. should I be providing the 'alt-sysrq-t' input through the serial port, if so, how ? can i connect a host terminal to the serial port of the VM. Vmware gives me three options about the serial port of the Virtual Machine i) connect it to physical port of the host, ii) connect to a named pipe and, iii)connect it to a file in the host. Please help ... -- Regards, Sukanto Ghosh -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
