Testing a product that does a lot of ftp transfers (about 200,000 files were transfered over a few days), with my linux 2.2.10 SMP redhat 6.0 box acting as the server crashed [kernel panic] my box Here is the kernel message: Aug 16 18:00:33 dilbert ftpd[21442]: FTP LOGIN FROM 130.151.18.243 [130.151.18.243], arkadiy Aug 16 18:00:34 dilbert kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000 Aug 16 18:00:34 dilbert kernel: current->tss.cr3 = 06335000, %cr3 = 06335000 Aug 16 18:00:34 dilbert kernel: *pde = 00000000 Aug 16 18:00:34 dilbert kernel: Oops: 0000 Aug 16 18:00:34 dilbert kernel: CPU: 1 Aug 16 18:00:34 dilbert kernel: EIP: 0010:[tcp_v4_rehash+227/344] Aug 16 18:00:34 dilbert kernel: EFLAGS: 00010287 Aug 16 18:00:34 dilbert kernel: eax: 00000170 ebx: c7a7d400 ecx: c74d1b70 edx: 00000000 Aug 16 18:00:34 dilbert kernel: esi: 00000001 edi: c7a7d420 ebp: 00000000 esp: c74d7f6c Aug 16 18:00:34 dilbert kernel: ds: 0018 es: 0018 ss: 0018 Aug 16 18:00:34 dilbert kernel: Process in.ftpd (pid: 21442, process nr: 106, stackpage=c74d7000) Aug 16 18:00:34 dilbert kernel: Stack: 40184008 c01717ce c7a7d400 c33d56ec c74d6000 c014e83e c33d56ec 00000001 Aug 16 18:00:34 dilbert kernel: 00000003 00000002 c014f494 c014f4fb 00000007 00000001 c74d6000 00000007 Aug 16 18:00:34 dilbert kernel: 00000001 bfffecc0 00000000 00000000 00000000 c0109f74 00000004 bfffec90 Aug 16 18:00:34 dilbert kernel: Call Trace: [inet_listen+138/240] [sys_listen+70/112] [sys_socketcall+52/480] [sys_socketcall+155/480] [system_call+52/56] Aug 16 18:00:34 dilbert kernel: Code: 66 39 0a 75 f8 8b 4a 08 85 c9 75 21 80 7b 2e 00 74 0f 8a 43 Aug 20 09:05:20 dilbert syslogd 1.3-3: restart. somebody lost a pointer somewhere. In the ftp xferlog shortly before the crash [5 seconds] there were many null's placed in the xferlog, implying it was already trashed at that point. I will put more logs in the attached url. I have upgraded to version 2.5 but nothing I found implied that any such bugs were fixed. Brynn
This is a kernel problem.