site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com On Dec 3, 2004, at 6:54 PM, Marek Kozubal wrote: Key parts from the KP: Proceeding back via exception chain: Exception state (sv=0x1C79C280) PC=0x1C808CD8; MSR=0x00009030; DAR=0x00000060; DSISR=0x40000000; LR=0x1C80A5F4; R1=0x0A103BF0; XCP=0x0000000C (0x300 - Data access) Kernel version: Darwin Kernel Version 7.5.0: Thu Aug 5 19:26:16 PDT 2004; root:xnu/xnu-517.7.21.obj~3/RELEASE_PPC You can do this if your binary has debugging symbols. Before the kext crashes, figure out where it loaded on the target: The third number is the load address of the kext. Now after you get your panic, do the following: Ronnie _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... This is probably documented somewhere, but I've not found the answer to this. I have a KP log from a user, its a simple data access problem (so a NULL pointer deference or something like). However, how do I figure out which line of code its in? I know its 68 bytes into my function, but there's no Disassemble in XCode like there is in CodeWarriror that let me figure such things out. So how do I figure out what line of code is the offender without become awesome at reading PPC asm code (and who knows how the optimiser might have changed orders of things and etc). Backtrace: 0x00093D70 0x1C80A5F4 0x000CE2E0 0x002218C8 0x00221764 0x002452B4 0x00094200 0x40B73B71 Now the function the PC is at starts at 0x1c808c94. So 0x1C808CD8 - 0x1c808c94 = 0x44 = 68 bytes. % kextstat | grep org.samoconnor.driver.NetworkAudioDriver 117 0 0x20781000 0x4000 0x3000 org.samoconnor.driver.NetworkAudioDriver (0.1) <82> % gdb (gdb) add-symbol-file /path/to/NetworkAudioDriver.kext/ts/MacOS/NetworkAudioDriver -s LC_SEGMENT. 0x20782000 <- add 0x1000 here, I'm not sure exactly why though :) (gdb) l *0x20782a7c 0x20782a7c is in org_samoconnor_driver_NetworkAudioEngine::init() (NetworkAudioEngine.cpp:153). 148 149 if (!IOAudioEngine::init(NULL)) { 150 return false; ... Incidentally, how did you figure out that the function starts at 0x1c808c94? This email sent to site_archiver@lists.apple.com