Unable to handle kernel NULL pointer dereference... and others!

Unable to handle kernel NULL pointer dereference... and others!

Post by Rod Troc » Tue, 08 Jul 1997 04:00:00



Since replacing the old 486/50MHz ISA m/b w/ 20MB of 30 pin RAM with a
newly acquired 486DX2/66MHz EISA m/b w 64MB of 30pin RAM I have been
having more errors with Linux then ever encountered, and I have been
running on that 50MHz m/b since the pre-1 kernels (since atleast late
1993).

I am getting very random and weird problems.  I will try to explain
here what is happening.  First off, the version I am running is:

Linux lonestar.texas.com 2.0.30 #11 Sat Jul 5 22:08:34 CDT 1997 i486

As you can see, the compile number is 11 as I have had to implement
the kernel software watchdog hopefully to catch the times when the
machine hangs or the load goes up to 70!  Yes, 70.x as it has a few
days ago.  Ultimately I had to reboot the machine.  I couldn't recover
from that level.

In a nutshell I was getting a lot of the "Unable to handle kernel NULL
pointer dereference at virtual address c0000040" (not always the same
virtual address).  Then picking through the /var/log/messages file I
noticed alot of the following type errors, included below is the
text.  With regards to "Process netscape", Netscape just shut down on
me, I then restarted it went to the same page and it shutdown again,
etc.  With respect to the grep process I was attempting to grep
through my httpd log.  In both of those (multiple) events the machine
stayed up and continued to fucntion.  I have experienced times though
where the box would appear "locked" not responding to any key or mouse
commands.

I would love to hear from you if you have any clues as to what may be
going on.  Oh, and for what it is worth, I was running 2.0.30 on the
old 50Mhz ISA m/b fine for quite some time.  It has only been
switching to the "new" m/b and "new" RAM that all of this has popped
up.

Here are pieces of my /var/log/messages file:

Jul  6 13:02:25 lonestar kernel: general protection: 0000
Jul  6 13:02:25 lonestar kernel: CPU:    0
Jul  6 13:02:25 lonestar kernel: EIP:    0010:[<0011cffb>]
Jul  6 13:02:25 lonestar kernel: EFLAGS: 00010282
Jul  6 13:02:25 lonestar kernel: eax: 00051000   ebx: 001bf810   ecx:
adbb43fe   edx: 00000370
Jul  6 13:02:25 lonestar kernel: esi: 012b1ccc   edi: 00051000   ebp:
00227d88   esp: 00b29f5c
Jul  6 13:02:25 lonestar kernel: ds: 0018   es: 0018   fs: 002b   gs:
002b   ss: 0018
Jul  6 13:02:25 lonestar kernel: Process netscape (pid: 1056, process
nr: 54, stackpage=00b29000)
Jul  6 13:02:25 lonestar kernel: Stack: 01ba3340 00000000 00002a31
012b1ccc 001bf810 00000000 00000000 00000000
Jul  6 13:02:25 lonestar kernel:        00000000 00000000 00000000
00051000 00002487 00000000 0012383a 012b1ccc
Jul  6 13:02:25 lonestar kernel:        01ba3340 085c9487 000005aa
01b26810 085c7000 00000013 bfffe18c 0010a822
Jul  6 13:02:25 lonestar kernel: Call Trace: [<0012383a>] [<0010a822>]
Jul  6 13:02:25 lonestar kernel: Code: 39 71 08 75 f0 39 41 0c 75 eb
ff 41 14 0f ba 69 18 02 19 d2
Jul  6 13:03:11 lonestar kernel: general protection: 0000
Jul  6 13:03:11 lonestar kernel: CPU:    0
Jul  6 13:03:11 lonestar kernel: EIP:    0010:[<0011cffb>]
Jul  6 13:03:11 lonestar kernel: EFLAGS: 00010282
Jul  6 13:03:11 lonestar kernel: eax: 00051000   ebx: 001bf810   ecx:
adbb43fe   edx: 00000370
Jul  6 13:03:11 lonestar kernel: esi: 012b1ccc   edi: 00051000   ebp:
00227d88   esp: 00d3af5c
Jul  6 13:03:11 lonestar kernel: ds: 0018   es: 0018   fs: 002b   gs:
002b   ss: 0018
Jul  6 13:03:11 lonestar kernel: Process netscape (pid: 1071, process
nr: 56, stackpage=00d3a000)
Jul  6 13:03:11 lonestar kernel: Stack: 038219c0 00000000 00002a31
012b1ccc 001bf810 00000000 00000000 00000000
Jul  6 13:03:11 lonestar kernel:        00000000 00000000 00000000
00051000 00002487 00000000 0012383a 012b1ccc
Jul  6 13:03:11 lonestar kernel:        038219c0 085c9487 000005aa
013b8414 085c7000 00000013 bfffe18c 0010a822
Jul  6 13:03:11 lonestar kernel: Call Trace: [<0012383a>] [<0010a822>]
Jul  6 13:03:11 lonestar kernel: Code: 39 71 08 75 f0 39 41 0c 75 eb
ff 41 14 0f ba 69 18 02 19 d2
Jul  6 13:04:23 lonestar kernel: general protection: 0000
Jul  6 13:04:23 lonestar kernel: CPU:    0
Jul  6 13:04:23 lonestar kernel: EIP:    0010:[<0011cffb>]
Jul  6 13:04:23 lonestar kernel: EFLAGS: 00010282
Jul  6 13:04:23 lonestar kernel: eax: 00051000   ebx: 001bf810   ecx:
adbb43fe   edx: 00000370
Jul  6 13:04:23 lonestar kernel: esi: 012b1ccc   edi: 00051000   ebp:
00227d88   esp: 01de0f5c
Jul  6 13:04:23 lonestar kernel: ds: 0018   es: 0018   fs: 002b   gs:
002b   ss: 0018
Jul  6 13:04:23 lonestar kernel: Process netscape (pid: 1128, process
nr: 54, stackpage=01de0000)
Jul  6 13:04:23 lonestar kernel: Stack: 01ba3540 00000000 00002a31
012b1ccc 001bf810 00000000 00000000 00000000
Jul  6 13:04:23 lonestar kernel:        00000000 00000000 00000000
00051000 00002487 00000000 0012383a 012b1ccc
Jul  6 13:04:23 lonestar kernel:        01ba3540 085c9487 000005aa
02074018 085c7000 00000013 bfffe18c 0010a822
Jul  6 13:04:23 lonestar kernel: Call Trace: [<0012383a>] [<0010a822>]
Jul  6 13:04:23 lonestar kernel: Code: 39 71 08 75 f0 39 41 0c 75 eb
ff 41 14 0f ba 69 18 02 19 d2

Jul  6 13:32:25 lonestar kernel: ll_rw_block: Trying to read
nonexistent block-device 08:02 (54145048)

Jul  6 22:25:56 lonestar kernel: general protection: 0000
Jul  6 22:25:56 lonestar kernel: CPU:    0
Jul  6 22:25:56 lonestar kernel: EIP:    0010:[<0011cd67>]
Jul  6 22:25:56 lonestar kernel: EFLAGS: 00010282
Jul  6 22:25:56 lonestar kernel: eax: 00000370   ebx: 0027122c   ecx:
028f8000   edx: adbb43fe
Jul  6 22:25:56 lonestar kernel: esi: 002d2000   edi: 03dadccc   ebp:
001bf810   esp: 02272f08
Jul  6 22:25:56 lonestar kernel: ds: 0018   es: 0018   fs: 002b   gs:
002b   ss: 0018
Jul  6 22:25:56 lonestar kernel: Process grep (pid: 6440, process nr:
37, stackpage=02272000)
Jul  6 22:25:56 lonestar kernel: Stack: 0027122c 03dadccc 03dadccc
00000000 0011d6fb 03dadccc 002d2000 00000000
Jul  6 22:25:56 lonestar kernel:        00000000 023f907c 0801f000
02d0e6d8 002d1000 03dadccc 028ed000 001bf80c
Jul  6 22:25:56 lonestar kernel:        0011aa2b 02d0e6d8 0801f000
00000000 0011a920 0801f003 027f9b98 01f9f810
Jul  6 22:25:56 lonestar kernel: Call Trace: [<0011d6fb>] [<0011aa2b>]
[<0011a920>] [<001108ec>] [<001107c0>] [<0010a9ad>]
Jul  6 22:25:56 lonestar kernel: Code: 39 7a 08 75 f4 39 72 0c 75 ef
ff 42 14 0f ba 6a 18 02 19 c0
Jul  6 22:26:13 lonestar kernel: general protection: 0000
Jul  6 22:26:13 lonestar kernel: CPU:    0
Jul  6 22:26:13 lonestar kernel: EIP:    0010:[<0011d53b>]
Jul  6 22:26:13 lonestar kernel: EFLAGS: 00010282
Jul  6 22:26:13 lonestar kernel: eax: 00000370   ebx: 00000000   ecx:
03dadccc   edx: adbb43fe
Jul  6 22:26:13 lonestar kernel: esi: 001bf810   edi: 03dadccc   ebp:
00000000   esp: 02a51f28
Jul  6 22:26:13 lonestar kernel: ds: 0018   es: 0018   fs: 002b   gs:
002b   ss: 0018
Jul  6 22:26:13 lonestar kernel: Process grep (pid: 6449, process nr:
37, stackpage=02a51000)
Jul  6 22:26:13 lonestar kernel: Stack: 00000000 02925080 08020000
038d9958 002d2000 03dadccc 028f7000 001bf810
Jul  6 22:26:13 lonestar kernel:        0011aa2b 038d9958 08020000
00000000 0011a920 08020003 02b50998 0192e810
Jul  6 22:26:13 lonestar kernel:        038d9218 00000000 02b50998
0801e000 028f7025 028f7025 001108ec 0192e810
Jul  6 22:26:13 lonestar kernel: Call Trace: [<0011aa2b>] [<0011a920>]
[<001108ec>] [<001107c0>] [<0010a9ad>]
Jul  6 22:26:13 lonestar kernel: Code: 39 7a 08 75 f0 8b 4c 24 10 39
4a 0c 75 e7 ff 42 14 0f ba 6a
Jul  6 22:26:39 lonestar kernel: general protection: 0000
Jul  6 22:26:39 lonestar kernel: CPU:    0
Jul  6 22:26:39 lonestar kernel: EIP:    0010:[<0011d53b>]
Jul  6 22:26:39 lonestar kernel: EFLAGS: 00010282
Jul  6 22:26:39 lonestar kernel: eax: 00000370   ebx: 00000000   ecx:
03dadccc   edx: adbb43fe
Jul  6 22:26:39 lonestar kernel: esi: 001bf810   edi: 03dadccc   ebp:
00000000   esp: 0229df28
Jul  6 22:26:39 lonestar kernel: ds: 0018   es: 0018   fs: 002b   gs:
002b   ss: 0018
Jul  6 22:26:39 lonestar kernel: Process grep (pid: 6455, process nr:
37, stackpage=0229d000)
Jul  6 22:26:39 lonestar kernel: Stack: 00000000 026ae080 08020000
0222fe18 002d2000 03dadccc 00000246 001bf810
Jul  6 22:26:39 lonestar kernel:        0011aa2b 0222fe18 08020000
00000000 0011a920 08020004 00c64898 02bfb414
Jul  6 22:26:39 lonestar kernel:        03aea0fc 00000000 00001000
00001000 00123977 03aea0fc 001108ec 02bfb414
Jul  6 22:26:39 lonestar kernel: Call Trace: [<0011aa2b>] [<0011a920>]
[<00123977>] [<001108ec>] [<001107c0>] [<0010a9ad>]
Jul  6 22:26:39 lonestar kernel: Code: 39 7a 08 75 f0 8b 4c 24 10 39
4a 0c 75 e7 ff 42 14 0f ba 6a

Jul  7 03:26:23 lonestar kernel: Unable to handle kernel NULL pointer
dereference at virtual address c0000040
Jul  7 03:26:23 lonestar kernel: current->tss.cr3 = 007b2000, Hr3 =
007b2000
Jul  7 03:26:23 lonestar kernel: *pde = 00102067
Jul  7 03:26:23 lonestar kernel: *pte = 00000027
Jul  7 03:26:23 lonestar kernel: Oops: 0000
Jul  7 03:26:23 lonestar kernel: CPU:    0
Jul  7 03:26:23 lonestar kernel: EIP:    0010:[<00126367>]
Jul  7 03:26:23 lonestar kernel: EFLAGS: 00010246
Jul  7 03:26:23 lonestar kernel: eax: 00000004   ebx: 00000001   ecx:
0072bb98   edx: 0009b698
Jul  7 03:26:23 lonestar kernel: esi: 00000802   edi: 000643d4   ebp:
00000400   esp: 007cfe0c
Jul  7 03:26:23 lonestar kernel: ds: 0018   es: 0018   fs: 002b   gs:
002b   ss: 0018
Jul  7 03:26:23 lonestar kernel: Process makewhatis (pid: 12928,
process nr: 34, stackpage=007cf000)
Jul  7 03:26:23 lonestar kernel: Stack: 000643d4 00000000 01223ccc
00000000 00000001 00159fd4 00000802 000643d4
Jul  7 03:26:23 lonestar kernel:        00000400 00000008 00000000
007cfebc 01223ccc 00000002 01223d58 0015a4c8
Jul  7 03:26:23 lonestar kernel:        01223ccc 00000000 00000000
00000000 007cfebc 01223ccc 007cff74 00000000
Jul  7 03:26:23 lonestar kernel: Call Trace: [<00159fd4>] [<0015a4c8>]
[<0015b02b>] [<00111ae1>] [<00111b18>] [<0015b3b4>] [<0012c1ae>]
Jul  7 03:26:23 lonestar kernel:        [<0012c3eb>] [<0012c4e0>]
[<0012a389>] [<0010a822>]
Jul  7 03:26:23 lonestar kernel: Code: 8b 40 3c 89 41 3c 8b 41 28 8b
04 85 44 8d 1a 00 8b 40 3c 89

--
Rod Troch  N2ZVV                             |
tr...@texas.com                              | Don't mess with TEXAS.
http://www.texas.com/                        |
ftp://lonestar.texas.com/                    | FTP for PGP key
Direct NeXTMail to tr...@bart.texas.com

 
 
 

1. INFO: kernel: Unable to handle kernel NULL pointer dereference

Out of the blue today I received this message across the system from the
kernel:

Kernel: Unable to handle NULL pointer dereference at virtual address c0000030
kernel: current->tss.cr3 = 075c0000,
kernel: *pde = 00102067
kernel: *pte = 00000027

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

I am running v2.0.14 w/ SMP enabled on a Tyan S1668 MB.  Kernel compiled
with pentium pro optimization.  Anyone have any ideas?  I've never seen
this before.

Stephen Costaras

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