Dear all, I got a kernel crash yesterday. A lot of functions didn't work anymore. Does someone know what the crash information means that is in the logging? Regards, Joop Boonen. I'm using kernel 2.2.13 on the firewall. Apr 11 12:15:08 world-citizen kernel: Unable to handle kernel NULL pointer dereference at virtual address 0000000d Apr 11 12:15:08 world-citizen kernel: current->tss.cr3 = 028a7000, %cr3 = 028a7000 Apr 11 12:15:08 world-citizen kernel: *pde = 00000000 Apr 11 12:15:08 world-citizen kernel: Oops: 0000 Apr 11 12:15:08 world-citizen kernel: CPU: 0 Apr 11 12:15:08 world-citizen kernel: EIP: 0010:[sys_semop+815/964] Apr 11 12:15:08 world-citizen kernel: EFLAGS: 00010286 Apr 11 12:15:08 world-citizen kernel: eax: ffffffff ebx: c3ffd800 ecx: c3f77400 edx: c3ffd800 Apr 11 12:15:08 world-citizen kernel: esi: 00000005 edi: 00026bd6 ebp: 00000075 esp: c2cd3f4c Apr 11 12:15:08 world-citizen kernel: ds: 0018 es: 0018 ss: 0018 Apr 11 12:15:08 world-citizen kernel: Process xntpd (pid: 29621, process nr: 31, stackpage=c2cd3000) Apr 11 12:15:08 world-citizen kernel: Stack: 00000000 c08c84a0 c156b000 00000005 c3f77400 00000000 c16628a0 c3ffd800 Apr 11 12:15:08 world-citizen kernel: c013a832 c19b0cc0 c01e76a0 c012fd23 c19b0cc0 c1acad60 c19b0cc0 c3f743e0 Apr 11 12:15:08 world-citizen kernel: c012e666 c19b0cc0 c3f743e0 00000000 c012b4c9 c1acad60 c2cd2000 00000020 Apr 11 12:15:08 world-citizen kernel: Call Trace: [sys_shmctl+566/1124] [posix_lock_file+355/828] [sys_select+322/1360] [pipe_write+457/524] [machine_r Apr 11 12:15:08 world-citizen kernel: Code: 00 ff 42 10 8b 5e 6c 0f ab 43 18 19 c0 85 c0 75 1a 6a 01 53