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Subjectcat /proc/dri/[01]/vm makes oops with tdfx
Hello,
I can generate this oops when ever I cat /proc/dri/[01]/vm, running
X or not, running as root or not. The computer is a ABIT VP6 with two
Pentium 3 procs, Highmem kernel (2 Gig ram), One voodoo 3500 AGP card,
and One voodoo 3000 PCI card. Kernel 2.4.10 with XFS patch and JFS 1.0.5
Patch. I built it with gcc 2.95.4, and a recent copy of binutils. Perhaps
I should try gcc-2.95.3. Anyway, on to the oops. By the way, DRI works great
on the first head (v3500), but dosen't work very well on the other. Will
tdfx.o ever work with two heads, or is it an X thing? If anyone needs more
info email me @ jack at i2net.com. Thanks for your time.

included here:
1) ksymoops(2.4.3) output of oops message.
2) lsmod output
3) Some of lspci -vvvvvvvvvvvvv



ksymoops 2.4.3 on i686 2.4.10-xfs. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.10-xfs/ (default)
-m /usr/src/linux/System.map (default)

Warning: You did not tell me where to find symbol information. I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
**** Dont Worry, they are... ****
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc. ksymoops -h explains the options.

<1>Unable to handle kernel NULL pointer dereference at virtual address 00000000
<4>f89b6594
<1>*pde = 00000000
<4>Oops: 0000
<4>CPU: 0
<4>EIP: 0010:[<f89b6594>]
Using defaults from ksymoops -t elf32-i386 -a i386
<4>EFLAGS: 00010287
<4>eax: 00000000 ebx: 00000032 ecx: f6c29000 edx: f6c3a634
<4>esi: f6c45f98 edi: f6c29000 ebp: f6c29000 esp: f6c45f0c
<4>ds: 0018 es: 0018 ss: 0018
<4>Process cat (pid: 141, stackpage=f6c45000)
<4>Stack: f6c3a634 f6c45f98 f6c29000 f6c3a654 00000000 f6c3a634 f89b93b4 f89b93b7
<4> f89b93bb f89b93bf f89b66e6 f6c29000 f6c45f98 00000000 00000c00 f6c45f94
<4> f6c3a634 f6d79320 00000c00 f6c29000 00001000 c015444a f6c29000 f6c45f98
<4>Call Trace: [<f89b93b4>] [<f89b93b7>] [<f89b93bb>] [<f89b93bf>] [<f89b66e6>]

*** Something like this i guess ....***
<4> [proc_file_read+242/404] [sys_read+143/196] [system_call+51/56]
*** ***

<4>Code: 8b 38 8b 07 0f 18 00 8b 44 24 14 8b 90 4c 01 00 00 39 d7 0f

>>EIP; f89b6594 <[tdfx]tdfx__vm_info+98/1b4> <=====
Trace; f89b93b4 <[tdfx].rodata.start+1394/197e>
Trace; f89b93b6 <[tdfx].rodata.start+1396/197e>
Trace; f89b93ba <[tdfx].rodata.start+139a/197e>
Trace; f89b93be <[tdfx].rodata.start+139e/197e>
Trace; f89b66e6 <[tdfx]tdfx_vm_info+36/4c>
Code; f89b6594 <[tdfx]tdfx__vm_info+98/1b4>
00000000 <_EIP>:
Code; f89b6594 <[tdfx]tdfx__vm_info+98/1b4> <=====
0: 8b 38 mov (%eax),%edi <=====
Code; f89b6596 <[tdfx]tdfx__vm_info+9a/1b4>
2: 8b 07 mov (%edi),%eax
Code; f89b6598 <[tdfx]tdfx__vm_info+9c/1b4>
4: 0f 18 00 prefetchnta (%eax)
Code; f89b659a <[tdfx]tdfx__vm_info+9e/1b4>
7: 8b 44 24 14 mov 0x14(%esp,1),%eax
Code; f89b659e <[tdfx]tdfx__vm_info+a2/1b4>
b: 8b 90 4c 01 00 00 mov 0x14c(%eax),%edx
Code; f89b65a4 <[tdfx]tdfx__vm_info+a8/1b4>
11: 39 d7 cmp %edx,%edi
Code; f89b65a6 <[tdfx]tdfx__vm_info+aa/1b4>
13: 0f 00 00 sldt (%eax)

<4> <1>Unable to handle kernel NULL pointer dereference at virtual address 00000000
<4>f89b6594
<1>*pde = 00000000
<4>Oops: 0000
<4>CPU: 0
<4>EIP: 0010:[<f89b6594>]
<4>EFLAGS: 00010287
<4>eax: 00000000 ebx: 00000032 ecx: f6c1e000 edx: f6c3a000
<4>esi: f6c45f98 edi: f6c1e000 ebp: f6c1e000 esp: f6c45f0c
<4>ds: 0018 es: 0018 ss: 0018
<4>Process cat (pid: 143, stackpage=f6c45000)
<4>Stack: f6c3a000 f6c45f98 f6c1e000 f6c3a020 00000000 f6c3a000 f89b93b4 f89b93b7
<4> f89b93bb f89b93bf f89b66e6 f6c1e000 f6c45f98 00000000 00000c00 f6c45f94
<4> f6c3a000 f6d79420 00000c00 f6c1e000 00001000 c015444a f6c1e000 f6c45f98
<4>Call Trace: [<f89b93b4>] [<f89b93b7>] [<f89b93bb>] [<f89b93bf>] [<f89b66e6>]
<4>Code: 8b 38 8b 07 0f 18 00 8b 44 24 14 8b 90 4c 01 00 00 39 d7 0f

>>EIP; f89b6594 <[tdfx]tdfx__vm_info+98/1b4> <=====
Trace; f89b93b4 <[tdfx].rodata.start+1394/197e>
Trace; f89b93b6 <[tdfx].rodata.start+1396/197e>
Trace; f89b93ba <[tdfx].rodata.start+139a/197e>
Trace; f89b93be <[tdfx].rodata.start+139e/197e>
Trace; f89b66e6 <[tdfx]tdfx_vm_info+36/4c>
Code; f89b6594 <[tdfx]tdfx__vm_info+98/1b4>
00000000 <_EIP>:
Code; f89b6594 <[tdfx]tdfx__vm_info+98/1b4> <=====
0: 8b 38 mov (%eax),%edi <=====
Code; f89b6596 <[tdfx]tdfx__vm_info+9a/1b4>
2: 8b 07 mov (%edi),%eax
Code; f89b6598 <[tdfx]tdfx__vm_info+9c/1b4>
4: 0f 18 00 prefetchnta (%eax)
Code; f89b659a <[tdfx]tdfx__vm_info+9e/1b4>
7: 8b 44 24 14 mov 0x14(%esp,1),%eax
Code; f89b659e <[tdfx]tdfx__vm_info+a2/1b4>
b: 8b 90 4c 01 00 00 mov 0x14c(%eax),%edx
Code; f89b65a4 <[tdfx]tdfx__vm_info+a8/1b4>
11: 39 d7 cmp %edx,%edi
Code; f89b65a6 <[tdfx]tdfx__vm_info+aa/1b4>
13: 0f 00 00 sldt (%eax)


1 warning issued. Results may not be reliable.

Modules Loaded:
Module Size Used by
tdfx 35840 1
es1371 30864 1
ac97_codec 9408 0 [es1371]

00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3 AGP] (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
Latency: 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00009000-00009fff
Memory behind bridge: d0000000-d3ffffff
Prefetchable memory behind bridge: d4000000-d5ffffff
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-

00:07.4 Bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 40)
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin ? routed to IRQ 4

00:09.0 VGA compatible controller: 3Dfx Interactive, Inc. Voodoo 3 (rev 01) (prog-if 00 [VGA])
Subsystem: 3Dfx Interactive, Inc.: Unknown device 0057
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR+
Interrupt: pin A routed to IRQ 16
Region 0: Memory at d6000000 (32-bit, non-prefetchable) [size=32M]
Region 1: Memory at d8000000 (32-bit, prefetchable) [size=32M]
Region 2: I/O ports at c400 [size=256]
Expansion ROM at <unassigned> [disabled] [size=64K]

01:00.0 VGA compatible controller: 3Dfx Interactive, Inc. Voodoo 3 (rev 01) (prog-if 00 [VGA])
Subsystem: 3Dfx Interactive, Inc. Voodoo3 3500 TV (NTSC)
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR+
Interrupt: pin A routed to IRQ 16
Region 0: Memory at d0000000 (32-bit, non-prefetchable) [size=32M]
Region 1: Memory at d4000000 (32-bit, prefetchable) [size=32M]
Region 2: I/O ports at 9000 [size=256]
Expansion ROM at <unassigned> [disabled] [size=64K]

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