Re: A kernel bug

Mike A. Harris (mharris@blackwidow.saultc.on.ca)
Mon, 2 Jun 1997 21:31:19 -0400 (EDT)


On Mon, 2 Jun 1997, H.J. Lu wrote:

> While running linux 2.1.42, I got:
>
> Unable to handle kernel NULL pointer dereference at virtual address
> 00000004

I've also posted a message with the same error - different
address though. I did not receive a reply from anyone at all
though so I don't know if it was received. Here is my syslog
entries. This is kernel 2.0.30. If any more info is needed, I'm
expecting someone to ask for it because I'm not going to spend 45
minutes creating a full bug report - to not even know if someone
received it.

Please let me know if more info is needed.

Unable to handle kernel NULL pointer dereference at virtual address c0000018
current->tss.cr3 = 00b3d000, cr3 = 00b3d000
*pde = 00102067
*pte = 00000027
Oops: 0000
CPU: 0
EIP: 0010:[find_candidate+212/244]
EFLAGS: 00010206
eax: 00000000 ebx: 0027d318 ecx: 00000000
edx: 00207a84
esi: 00000000 edi: 00b3fee4 ebp: 00000400
esp: 00b3feac
ds: 0018 es: 0018 fs: 002b gs: 002b ss: 0018
Process update (pid: 8, process nr: 8, stackpage=00b3f000)
Stack: 0027d318 00000000 00000400 00005400 00000000 00123890
0027d318 00b3fee4
00000400 0000e005 00580303 00000001 00000400 00000009
00000014 00000000
00000000 0027d318 00000000 00000000 00123a5e 00000400
0000e005 00583ec4
Call Trace: [refill_freelist+836/948] [getblk+350/936]
[bread+24/124] [ext2_update_inode+274/704]
[ext2_write_inode+12/16] [write_inode+91/116] [sync_inodes+63/88]
[sync_old_buffers+20/224] [sys_bdflush+53/152]
[system_call+82/128]
Code: 8b 40 18 89 44 24 10 ff 0f 83 7c 24 10 00 0f 85 38 ff ff ff

--------------------------------------------------------------

Once again, this was on a linux 2.0.30 kernel. The system was
not deadlocked, but init had died so I had to hit the switch.

Take care.

Mike A. Harris | http://blackwidow.saultc.on.ca/~mharris
Computer Consultant | Coming soon: dynamic-IP-freedom...
My dynamic address: http://blackwidow.saultc.on.ca/~mharris/ip-address.html
Email: mharris at blackwidow.saultc.on.ca <-- Spam proof address

Close windows, and OpenDOS! http://www.caldera.com/dos/dos.htm