Need help: Loading LDD in textshell console crash

George Norton

2010-11-24 08:39:01 UTC

You have a data abort because you are trying to execute code at a
garbage address. This might happen for example, if you have a bad
pointer to a C++ object and you try to call a virtual function on it.

What does the definition of NUSBDriver::KLDDriverName look like?
Can you print out the address of KLDDriverName before calling SetName
(Kern::Printf("Name is at 0x%08x", &NUSBDriver::KLDDriverName);)

Also, can you post decoded crashlogs? Or at least a valid set of
symbol files for your ROM? An undecoded crashlog isn't much more than
a load of random hex numbers.

Thanks,

George

Post by Arnaud Lenoir
Hi All,
Just wanted to know if someone in the wild Ducks community could help us to resolve a crash we have, just in case you have seen the problem yourself.
We have created a test program to run on BeagleBoard in textshell mode.
When we try to load the LDD driver using the function “User::LoadLogicalDevice()“ we get a crash it seems in the function “DObject::AppendName” following the use of the function “SetName()” called from the function “Install()” which is the virtual function defined from the derived class based on the “DLogicalDevice” class.
Also, it seems that if you remove the SetName function, you still get the crash even when the function Install is empty.
“
R0=c80affb8 R1=c9117ed8 R2=00008198 R3=00000000
R4=c80affb8 R5=c9117ed8 R6=8005600c R7=800574cc
R8=c8090080 R9=c9117ed8 R10=c8090148 R11=00000010
R12=00000000 R13=00419c98 R14=80170e91 R15=00008198
CPSR=68000113
R8=b51c3d00 R9=ffffffff R10=00000004 R11=00000002
R12=81001bcc R13=c003c000 R14=81000960 SPSR=00000000
R13=c003a000 R14=00000000 SPSR=28000113
R13=c9117eb8 R14=80055fcc SPSR=00000010
R13=c003fc00 R14=00008198 SPSR=68000113
R13=c003e000 R14=9000005d SPSR=00000000
TEEHBR=00000000 CPACR=00000000
SCTLR=30c5387f ACTLR=00000072   PRRR=000a00a4   NMRR=00400040
DACR=00000001 TTBR0=800fe018 TTBR1=80000018 TTBCR=00000001
VBAR=00014000 FCSEID=00000000 CTXIDR=202a5e01
Thread ID     RWRW=00419fd0   RWRO=00000000   RWNO=00000000
DFSR=00000000   DFAR=00000000   IFSR=00000005   IFAR=00008198
ADFSR=00000000              AIFSR=00000000
ExcCode 00000000
Password: replacement
”
Looking on the forum, there is a mention about the error “Fault Category: Exception Fault Reason: 10000000” here: http://developer.symbian.org/forum/showthread.php?t=7621.
I have attached a file with more info about the information collected with the crash debugger.
Any ideas of what is the problem? Any help / advice is welcome.
Also, if you know any test program loading a LDD that you know is currently working in a textshell on Beagleboard and that we could use to compare with the test program we are trying to execute will be helpful?
Best regards,
Arnaud
======================================================================
Arnaud Lenoir
Features Integration Lead
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Twitter: arnaudlsymbian
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