This occurs when the 3c509-module is being loaded at startup, and in
/proc/modules it is listed as (initialising). It it worth mentioning
that I have two 3c509-cards in my computer. This worked in test8.
Unable to handle kernel NULL pointer dereference at virtual address
00000070
c6d485a5
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<c6d485a5>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010282
eax: 9c24a000 ebx: 00000004 ecx: 6b5f6768 edx: 00000070
esi: 00000006 edi: 00000003 ebp: 00000220 esp: c54eff08
ds: 0018 es: 0018 ss: 0018
Process modprobe (pid: 348, stackpage=c54ef000)
Stack: 00000000 00000000 c6d4804e ffffffea 00000070 c54eff3c c54eff2c
00000005
00ff0000 c6d4804e ffffffea c1044010 c039a280 9c24a000 ffff6edf
c6d49295
00000000 c6d48000 00000000 c011b1d8 c54ee000 0804b17c 08061798
bfffe118
Call Trace: [<c6d4804e>] [<c6d4804e>] [<c6d49295>] [<c6d48000>]
[<c011b1d8>] [<c6d48048>] [<c6d0f000>]
[<c6d48048>] [<c010a7cf>] [<c030002b>]
Code: 89 02 8b 44 24 38 66 89 42 04 8b 4c 24 40 89 69 20 8b 44 24
>>EIP; c6d485a5 <[3c509].text.start+545/6e0> <=====
Trace; c6d4804e <[hisax].bss.end+15ab/15bd>
Trace; c6d4804e <[hisax].bss.end+15ab/15bd>
Trace; c6d49295 <[3c509]init_module+59/74>
Trace; c6d48000 <[hisax].bss.end+155d/15bd>
Trace; c011b1d8 <sys_init_module+3f8/4a0>
Trace; c6d48048 <[hisax].bss.end+15a5/15bd>
Trace; c6d0f000 <[isdn].bss.end+19b79/19bd9>
Trace; c6d48048 <[hisax].bss.end+15a5/15bd>
Trace; c010a7cf <system_call+33/38>
Trace; c030002b <stext_lock+809f/aff4>
Code; c6d485a5 <[3c509].text.start+545/6e0>
00000000 <_EIP>:
Code; c6d485a5 <[3c509].text.start+545/6e0> <=====
0: 89 02 mov %eax,(%edx) <=====
Code; c6d485a7 <[3c509].text.start+547/6e0>
2: 8b 44 24 38 mov 0x38(%esp,1),%eax
Code; c6d485ab <[3c509].text.start+54b/6e0>
6: 66 89 42 04 mov %ax,0x4(%edx)
Code; c6d485af <[3c509].text.start+54f/6e0>
a: 8b 4c 24 40 mov 0x40(%esp,1),%ecx
Code; c6d485b3 <[3c509].text.start+553/6e0>
e: 89 69 20 mov %ebp,0x20(%ecx)
Code; c6d485b6 <[3c509].text.start+556/6e0>
11: 8b 44 24 00 mov 0x0(%esp,1),%eax
1 warning issued. Results may not be reliable.
Index: linux_2_4/drivers/net/3c509.c
diff -u linux_2_4/drivers/net/3c509.c:1.1.1.5 linux_2_4/drivers/net/3c509.c:1.1.1.3
--- linux_2_4/drivers/net/3c509.c:1.1.1.5 Tue Oct 31 13:21:47 2000
+++ linux_2_4/drivers/net/3c509.c Sun Oct 22 13:29:58 2000
@@ -434,6 +436,13 @@
/* Free the interrupt so that some other card can use it. */
outw(0x0f00, ioaddr + WN0_IRQ);
found:
+ if (dev == NULL) {
+ dev = init_etherdev(dev, sizeof(struct el3_private));
+ if (dev == NULL) {
+ release_region(ioaddr, EL3_IO_EXTENT);
+ return -ENOMEM;
+ }
+ }
memcpy(dev->dev_addr, phys_addr, sizeof(phys_addr));
dev->base_addr = ioaddr;
dev->irq = irq;