kernel bug in dcache?

Hi folks!

Had a pretty strange experience, which I found out to be a kernel-bug.

I wanted to start a terminal in X, which resulted in a gnome-msg saying something like "can't open terminal, if using kernel so-and-so maybe related to mis-configured unixpt?" Afterward, I was unable to use _any_ console, but everything else worked fine. I know, the kernel is tainted (nvidia, but I think this is unrelated). Maybe, this is known already.

If you don't want to care due to the nvidia-module loaded, fine, I know the issue, but in that case, please, don't bother to start some thread about it. :-)

Here's the syslog:

Jan  5 20:17:34 maniac kernel: kernel BUG at dcache.c:654!
Jan  5 20:17:34 maniac kernel: invalid operand: 0000
Jan  5 20:17:34 maniac kernel: CPU:    0
Jan  5 20:17:34 maniac kernel: EIP:    0010:[d_instantiate+33/204]    Tainted: PF
Jan  5 20:17:34 maniac kernel: EFLAGS: 00010282
Jan  5 20:17:34 maniac kernel: eax: 0000001c   ebx: f184423c   ecx: c0328324   edx: 0000c92e
Jan  5 20:17:34 maniac kernel: esi: ecc4b790   edi: ecc4b790   ebp: f7967824   esp: c4a63ea4
Jan  5 20:17:34 maniac kernel: ds: 0018   es: 0018   ss: 0018
Jan  5 20:17:34 maniac kernel: Process gnome-pty-helpe (pid: 7084, stackpage=c4a63000)
Jan  5 20:17:34 maniac kernel: Stack: c02c44f8 0000028e cf4229ac f184423c c0194d27 ecc4b790 f184423c fffffff4 
Jan  5 20:17:34 maniac kernel:        f796788c f7967824 ecc4b790 f7da0c9c c032d260 e1658d04 00000000 0002e005 
Jan  5 20:17:34 maniac kernel:        c5e8b000 f7db6d74 00000246 00000000 f796788c f7967824 c4a63f74 f79ca3d0 
Jan  5 20:17:34 maniac kernel: Call Trace: [devfs_lookup+535/596] [in_group_p+30/40] [d_alloc+24/504] [real_lookup+176/404] [link_path_walk+2205/2992] 
Jan  5 20:17:34 maniac kernel:    [getname+93/156] [path_walk+26/28] [__user_walk+53/80] [sys_stat64+25/112] [sys_ioctl+722/740] [system_call+51/56] 
Jan  5 20:17:34 maniac kernel: 
Jan  5 20:17:34 maniac kernel: Code: 0f 0b 83 c4 08 81 3d a4 b6 38 c0 ad 4e ad de 74 26 68 56 86 

And here's ksymoops:
Using defaults from ksymoops -t elf32-i386 -a i386

Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: 0f 0b ud2a
Code; 00000002 Before first symbol
2: 83 c4 08 add $0x8,%esp
Code; 00000004 Before first symbol
5: 81 3d a4 b6 38 c0 ad cmpl $0xdead4ead,0xc038b6a4
Code; 0000000c Before first symbol
c: 4e ad de
Code; 0000000e Before first symbol
f: 74 26 je 37 <_EIP+0x37> 00000036 Before first symbol
Code; 00000010 Before first symbol
11: 68 56 86 00 00 push $0x8656

Tschoe,                http://gecius.de/gpg-key.txt - Fingerprint:
 Jens                  1AAB 67A2 1068 77CA 6B0A  41A4 18D4 A89B 28D0 F097