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Kernel panic in AppleFWOHCI_DMAManager::addDCLProgram

Subject: Kernel panic in AppleFWOHCI_DMAManager::addDCLProgram
From: Chris Thomas <email@hidden>
Date: Mon, 31 Oct 2005 10:05:15 -0500
Delivered-to: email@hidden
Delivered-to: email@hidden

Any ideas why this might happen? It would be super handy to have the OHCI source code available...

10.4.2 on a dual G4 1.1

#0  0x00a61114 in AppleFWOHCI_DMAManager::addDCLProgram ()
#1  0x00a5c07c in AppleFWOHCI_DCLProgram::allocateHW ()
#2  0x005a5b7c in IOFWLocalIsochPort::allocatePort ()
#3  0x0058a264 in IOFWIsochChannel::allocateChannel ()

0x00a610f8 <...addDCLProgram...+472>: bl 0x2ae0ac <IOLog> 0x00a610fc <...addDCLProgram...+476>: lis r3,167 0x00a61100 <...addDCLProgram...+480>: mr r4,r26 0x00a61104 <...addDCLProgram...+484>: addi r3,r3,-16060 0x00a61108 <...addDCLProgram...+488>: bl 0x2ae0ac <IOLog> 0x00a6110c <...addDCLProgram...+492>: cmpwi cr7,r27,0 0x00a61110 <...addDCLProgram...+496>: bne- cr7,0xa6111c <+508> 0x00a61114 <...addDCLProgram...+500>: stw r25,20 (r31) <-- 0x00a61118 <...addDCLProgram...+504>: stw r24,24(r31) 0x00a6111c <...addDCLProgram...+508>: lwz r3,32(r26) 0x00a61120 <...addDCLProgram...+512>: bl 0xa4ac0 <mutex_unlock_rwcmb> 0x00a61124 <...addDCLProgram...+516>: lwz r0,104(r1) 0x00a61128 <...addDCLProgram...+520>: addi r1,r1,96 0x00a6112c <...addDCLProgram...+524>: mr r3,r31

r31 is NULL.

Thanks,
Chris
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