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SubjectRe: NULL pointer dereference with 2.0.17
> I had this error on one of our machines, it was bacause /dev/console 
> was not major 4, minor 0...

It IS 4,0 on my machine and i'm getting these too.

and it is almost reproducible: always happens when i kill an xterm.

just reproduced:

Warning: dev (04:c1) tty->count(1) != #fd's(2) in do_tty_hangup
Unable to handle kernel NULL pointer dereference at virtual address c0000010
current->tss.cr3 = 01eb2000, ^\r3 = 01eb2000
*pde = 00102067
*pte = 00000027
Oops: 0000
CPU: 0
EIP: 0010:[tty_fasync+19/284]
EFLAGS: 00010246
eax: 00000000 ebx: 0059e000 ecx: 001b3b94 edx: 01e21414
esi: 019b9440 edi: 00000000 ebp: 00000000 esp: 01f08f04
ds: 0018 es: 0018 fs: 002b gs: 002b ss: 0018
Process xterm (pid: 13619, process nr: 48, stackpage=01f08000)
Stack: 019b9440 00000081 001bc438 0059e000 00179059 00000000 019b9440 00000000
005a0000 00000001 01ccf440 0059e000 001791e7 0059e000 001bc438 001819ac
0059e000 005a0000 00179f87 005a0000 01ccf440 01ccf440 018163d0 018163d0
Call Trace: [do_tty_hangup+97/480] [tty_hangup+15/20] [pty_close+160/176] [release_dev+607/1184] [tty_release+10/16] [__fput+28/64] [close_fp+76/92]
[sys_close+68/80] [system_call+82/128]
Code: 66 8b 47 10 85 db 75 1d 68 a6 a8 1a 00 25 ff ff 00 00 50 e8



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