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samo79
diskboot.config crash ?
Posted on: 2013/2/21 20:45    #1
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After latest updates from time to time i got various strange crash on diskboot.config, for example today i got one playing GLQuake

Quote:
Crash log for task "glquake"
Generated by GrimReaper 53.5
Crash occured in module diskboot.config at address 0x01821674
Type of crash: DSI (Data Storage Interrupt) exception

Register dump:
GPR (General Purpose Registers):
0: 49AED008 4DB99660 00000000 49AED008 099C0200 00096000 0000000C 020A9824
8: 5428C008 49AED008 00000000 00000000 00000794 4DBA939C 00000000 00000000
16: 3E71D340 6F1271F4 00000000 123F8B94 00340014 02270000 02270000 4DBA0000
24: 4DBA0000 4DBA0000 4DB99650 3C927218 020A9824 49AED008 099C0200 00096000


FPR (Floating Point Registers, NaN = Not a Number):
0: nan 0 0.95 1
4: 1 320 240 320
8: 1606.09 0.00834089 0.0139008 0
12: 26.4699 0.001 3.39519e-313 -5.05923e-321
16: 0 1.39067e-309 0 0
20: 0 0 0 1.61895e-319
24: 4.94066e-324 0 1.08779e-311 -4.07294e-35
28: 0 1.35808e-312 8.8275e-311 31.0884

FPSCR (Floating Point Status and Control Register): 0x8A004000


SPRs (Special Purpose Registers):
Machine State (msr) : 0x0002B030
Condition (cr) : 0x48422044
Instruction Pointer (ip) : 0x01821674
Xtended Exception (xer) : 0x20000002
Count (ctr) : 0x0181633C
Link (lr) : 0x01821B20
DSI Status (dsisr) : 0x00000000
Data Address (dar) : 0x099C0200



680x0 emulated registers:
DATA: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ADDR: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
FPU0: 0 0 0 0
FPU4: 0 0 0 0



Symbol info:
Instruction pointer 0x01821674 belongs to module "diskboot.config" (HUNK/Kickstart)

Stack trace:
kernel module diskboot.config at 0x01821674
kernel module diskboot.config at 0x01813884
native kernel module newlib.library.kmod+0x000080ec
module glquake at 0x6F104308 (section 5 @ 0x452F0)
module glquake at 0x6F0C7E10 (section 5 @ 0x8DF8)
module glquake at 0x6F0C7F98 (section 5 @ 0x8F80)
module glquake at 0x6F0CEB6C (section 5 @ 0xFB54)
module glquake at 0x6F127748 (section 5 @ 0x68730)
native kernel module newlib.library.kmod+0x00002094
native kernel module newlib.library.kmod+0x00002d3c
native kernel module newlib.library.kmod+0x00002eb8
glquake:_start()+0x170 (section 1 @ 0x170)
native kernel module dos.library.kmod+0x00022a10
kernel module diskboot.config at 0x0183bd20
kernel module diskboot.config at 0x0183bda0
module SYS:System/GrimReaper at 0x00000000 (section 0 @ 0xFFFFFFE8)

PPC disassembly:
0182166c: 39600000 li r11,0
01821670: 418200ac beq- 0x182171C
*01821674: 7c04582e lwzx r0,r4,r11
01821678: 396b0004 addi r11,r11,4
0182167c: 90090000 stw r0,0(r9)

System information:

CPU
Model: AMCC PPC440EP V1.3
CPU speed: 799 MHz
FSB speed: 133 MHz
Extensions:

Machine
Machine name: Sam440EP
Memory: 1048576 KB
Extensions: bus.pci


What's that ?
diskboot.config stand for ?
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tonyw
Re: diskboot.config crash ?
Posted on: 2013/2/21 22:01    #2
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It's nothing to do with diskboot. I get them also when I'm developing system software.

I don't know why diskboot figures in the stack trace - it may be that some filesystem needed some information from it and had to call it.

The fault is in glquake (4th line).
cheers
tony
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afxgroup
Re: diskboot.config crash ?
Posted on: 2013/2/22 9:38    #3
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i think there is something wrong Tony.. i'm having same problems on diskboot with all beta updates too and on different exe (also Elwood is having the same problems..)
i'm really tired...
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Elwood
Re: diskboot.config crash ?
Posted on: 2013/2/22 10:34    #4
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But my crash log pointed to an offset in the kernel so, in my case, it might not be related to diskboot.config at all.
I filled a bug report for my case.
Philippe 'Elwood' FERRUCCI
Sam460ex 1.10 Ghz
http://elwoodb.free.fr
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samo79
Re: diskboot.config crash ?
Posted on: 2013/2/22 13:33    #5
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@afxgroup

Maybe a problem introduced by the latest dos.library, can be possible in your opinion ?
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Chris
Re: diskboot.config crash ?
Posted on: 2013/2/22 14:19    #6
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I'm seeing stacktraces pointing to diskboot.config too. Something's changed.

diskboot.config is of course a plain text config file, so there's no way it can be crashing

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afxgroup
Re: diskboot.config crash ?
Posted on: 2013/2/22 14:30    #7
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indeed.. i think there is something that is trashing memory
i'm really tired...
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LiveForIt
Re: diskboot.config crash ?
Posted on: 2013/2/22 21:11    #8
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Does not the MMU control if memory block is executable or not.
A text file should not be executable, the CPU does not know the different between text and operation codes, they are hex values after all.
(NutsAboutAmiga)

Basilisk II for AmigaOS4
AmigaInputAnywhere
Excalibur
and other tools and apps.
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tonyw
Re: diskboot.config crash ?
Posted on: 2013/2/22 22:17    #9
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There is a Kickstart component called "diskboot.kmod", maybe that calls itself "diskboot.config" when running, or spawns a task that calls itself that.

If I weren't so busy (Read: lazy), I could look up the sources and find out. But look at it this way: when your program crashes in Exec, you don't blame Exec for the crash, you blame your program, don't you?

In this case, Quake is calling a newlib function that ends up in a crash. It's most likely that the crash is quake's fault. It is probably caused by some old coding trick that used to work back in the old days, but has been made illegal these days.
cheers
tony
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elfpipe
Re: diskboot.config crash ?
Posted on: 2013/2/22 22:23    #10
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I think this is a new problem in IDOS->FindTrackedAddress(). For one thing, try and look at the crashlog in the first post: The bottom most entry says "GrimReaper" at addr 0x0000000", which is obviously not correct. When working with db101, I get all sorts of senseless output when giving address 0x0.
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Swoop
Re: diskboot.config crash ?
Posted on: 2013/2/22 22:47    #11
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@alfkil

Quote:
For one thing, try and look at the crashlog in the first post: The bottom most entry says "GrimReaper" at addr 0x0000000", which is obviously not correct.

I got the same crashlog running Timberwolf-RC3 in diskboot.config & GrimReaper at 0x0000000.
Mine was an ISI exception crash.
My hardware is an A1XE-G3 OS4.1 update6 (uptodate).
Peter Swallow

Eyetech A1XE-G3 800Mhz OS4.1
Towered A1200 OS3.9
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Raziel
Re: diskboot.config crash ?
Posted on: 2013/2/22 23:14    #12
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This seems to be introduced just lately, i today got an error after AmigaAmp crashed and saw it the very first time.

Maybe one of the last updates introduced it? dos.library?
--

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scummvm infrequent builds
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afxgroup
Re: diskboot.config crash ?
Posted on: 2013/3/2 12:44    #13
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the culprit was the DOS.library. You have to wait the next update
i'm really tired...
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RIBDEVIL
Re: diskboot.config crash ?
Posted on: 2013/3/3 13:16    #14
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I have similar error with BTanks, crash on diskboot.config, or this seems.

There's a dos.library update today, but still fails.
AmigaOne X5000 OS4.1 FEU1 And Lubuntu 10.04
1200 towered with Blizzard PPC - BVision and Mediator
And a new fantastic Chameleon64
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