On Thu, 23 Dec 2004 11:20:28 +0000, Tim Waugh <twaugh@xxxxxxxxxx> wrote: > Well, that really looks like a kernel oops. Sure there's not one in > dmesg output? I don't really know what else would cause that. No, there is no message from the kernel at all. The only messages regarding this is ohci_hcd 0000:00:02.1: wakeup usb 3-2: new full speed USB device using address 2 drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 2 if 0 alt 0 proto 2 vid 0x043D pid 0x000C usbcore: registered new driver usblp drivers/usb/class/usblp.c: v0.13: USB Printer Device Class driver when I switch the printer on > You could try 'ulimit -c unlimited' and run gdb on /usr/bin/perl and > the resulting core file; that might give more clues. [root@skymoo ~]# gdb /usr/bin/perl core.7388 GNU gdb Red Hat Linux (6.1post-1.20040607.43rh) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-redhat-linux-gnu"...(no debugging symbols found)...Using host libthread_db library "/lib/tls/libthread_db.so.1". Reading symbols from shared object read from target memory...(no debugging symbols found)...done. Loaded system supplied DSO at 0xffffe000 Core was generated by `perl -e ioctl(STDIN,0x84005001,$result);print $result'. Program terminated with signal 6, Aborted. warning: svr4_current_sos: Can't read pathname for load map: Input/output error Reading symbols from /usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE/libperl.so Reading symbols from /lib/libnsl.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/libnsl.so.1 Reading symbols from /lib/libdl.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/libdl.so.2 Reading symbols from /lib/tls/libm.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/tls/libm.so.6 Reading symbols from /lib/libcrypt.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/libcrypt.so.1 Reading symbols from /lib/libutil.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/libutil.so.1 Reading symbols from /lib/tls/libpthread.so.0...(no debugging symbols found)...done. Loaded symbols for /lib/tls/libpthread.so.0 Reading symbols from /lib/tls/libc.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/tls/libc.so.6 Reading symbols from /lib/ld-linux.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/ld-linux.so.2 #0 0xffffe410 in __kernel_vsyscall () (gdb) Cheers Adam