[Dri-devel] Xserver crashing 2.4.22 kernel (Intel 82845G/GL)

[<ha...@da...>]

Hi,

I have a MSI 845GL-P barebone, 
00:02.0 VGA compatible controller: Intel Corp. 82845G/GL [Brookdale-G] Chipset Integrated Graphics Device (rev 01)


and do use it with 2.4.22, i830 and agpgart kernel modules and
4.3.0-0pre1v1 xfree86-xserver (debian package).


Unfortunately the kernel crashes every few minutes. The problem is
that it does not crash immediately, it continuously degenerates. 
Some programs start to behave crazy or simply disappear, and the
kernel shows more and more malfunctions, like being unable to remove
kernel modules or finding hard discs. I manged to get a trace once
(see below), but I'm pretty sure it's useless, since this is not
what's causing the problem. 

I am pretty sure that the combination of the xserver with this 
vga device corrupts kernel memory structures (many normal programs 
suddenly die with segmentation fault or with a kernel error message
about mapping problems. When I finally get a Oops debug output, thing
have already gone wrong. 

I first used the machine without i830 and agpgart modules, but this
was even worse.

Do you have any idea whether this is a known bug?


regards
Hadmut




Unable to handle kernel paging request at virtual address 04004188
c013cc5a
*pde = 00000000
Oops: 0000
CPU:    0
EIP:    0010:[<c013cc5a>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010206
eax: 04004160   ebx: d6116500   ecx: 00000000   edx: 00000000
esi: c158e340   edi: dede6780   ebp: dedf8500   esp: d60f5e8c
ds: 0018   es: 0018   ss: 0018
Process .xsession (pid: 1543, stackpage=d60f5000)
Stack: d6116500 d5f7c084 d77f4180 00006000 deefa200 080dc000 c012cf1a deefa200 
       080dc000 00006000 d77f4480 deefa200 00000000 d60f4000 0000000f c011a7e7 
       deefa200 00000202 deefa200 c011f337 deefa200 c158631c d60f4000 00000000 
Call Trace:    [<c012cf1a>] [<c011a7e7>] [<c011f337>] [<c0124e2c>] [<c0125005>]
  [<c0108dfa>] [<c011f691>] [<c011f955>] [<c01090f8>]
Code: 8b 50 28 85 d2 0f 85 8d 00 00 00 85 c0 74 17 8b 00 85 c0 74 


>>EIP; c013cc5a <fput+5a/120>   <=====

>>ebx; d6116500 <_end+15e084a8/20612008>
>>esi; c158e340 <_end+12802e8/20612008>
>>edi; dede6780 <_end+1ead8728/20612008>
>>ebp; dedf8500 <_end+1eaea4a8/20612008>
>>esp; d60f5e8c <_end+15de7e34/20612008>

Trace; c012cf1a <exit_mmap+12a/140>
Trace; c011a7e7 <mmput+47/b0>
Trace; c011f337 <do_exit+77/260>
Trace; c0124e2c <sig_exit+ac/b0>
Trace; c0125005 <dequeue_signal+65/d0>
Trace; c0108dfa <do_signal+1ca/2c0>
Trace; c011f691 <sys_wait4+131/3d0>
Trace; c011f955 <sys_waitpid+25/30>
Trace; c01090f8 <signal_return+14/18>

Code;  c013cc5a <fput+5a/120>
00000000 <_EIP>:
Code;  c013cc5a <fput+5a/120>   <=====
   0:   8b 50 28                  mov    0x28(%eax),%edx   <=====
Code;  c013cc5d <fput+5d/120>
   3:   85 d2                     test   %edx,%edx
Code;  c013cc5f <fput+5f/120>
   5:   0f 85 8d 00 00 00         jne    98 <_EIP+0x98>
Code;  c013cc65 <fput+65/120>
   b:   85 c0                     test   %eax,%eax
Code;  c013cc67 <fput+67/120>
   d:   74 17                     je     26 <_EIP+0x26>
Code;  c013cc69 <fput+69/120>
   f:   8b 00                     mov    (%eax),%eax
Code;  c013cc6b <fput+6b/120>
  11:   85 c0                     test   %eax,%eax
Code;  c013cc6d <fput+6d/120>
  13:   74 00                     je     15 <_EIP+0x15>