site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com I have an NKE that intermittently, but reliably, panics in what looks like an interrupt handler: panic(cu 0 caler 0x001A8Fd4): Machine-check at 0x0014329a, thread:0x3639790, code:0x12, registers: CR0: 0x8001003b, CR2: 0x37d0bfec, CR3: 0x0107d000, CR4: 0x0000006e0 EAX: 0x00522d08, EBX: 0x00000000, ECX: 0x00000000, EDX: 0x00001000 ESP: 0x37d0bff0, EBP: 0x37d0c068, ESI: 0x00000000, EDI: 0x00522d08 EFL: 0x00010206, EIP: 0x0019f967 I can reproduce the panic fairly easily but I cannot see in the code where it is panicing. The EIP given in the panic log is someplace in hw_simplelock OR zalloc_canblock, but never in my code (though I'm sure it's my kext causing the panic). I just don't know how to tell where it's going wrong. I don't even know what this panic indicates since I don't know exactly what machine-check is, other than some sort of interrupt. My guess is stack overflow or stack corruption, but I could be dead wrong. The ESP and CR2 registers may be inside kext, since showallkmods shows my kext is loaded at 0x2bc7a000, though that'd be a large jump (the kext is 800k). I've done all the usual debugging that I can think of but two machine debugging is pretty useless since the backtrace is not in my code, and printf can only tell me the last function in my code that is called, not any kernel functions I call, (plus it's not as reliable as one would hope). I've commented out a lot of code to the point that it doesn't panic anymore, but also doesn't do anything useful anymore. So I'm pretty much at a dead end. Anybody have any other ideas on where to begin, like what machine-check means? Thanks, Ryan ----------------------- Ryan McGann rmcgann@mac.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... This email sent to site_archiver@lists.apple.com