Hello all, I found how to do it, I had asked it on stackoverflow.com and posted it as an answer there. Please see if you are interested. https://stackoverflow.com/questions/71749640/how-can-i-debug-kernel-module-r unning-on-a-virtual-machine/71753139#71753139 Thank you! Chan Kim > -----Original Message----- > From: Chan Kim <ckim@xxxxxxxxxx> > Sent: Tuesday, April 5, 2022 6:54 PM > To: 'qemu-discuss' <qemu-discuss@xxxxxxxxxx>; > kernelnewbies@xxxxxxxxxxxxxxxxx > Subject: How can I debug kernel module running on a virtual machine? > > Hello all, > > I think I have once read about this but can't find it now. > I'm running linux-5.4.188 on a qemu arm64 virtual machine. Because I built > the kernel from the source, I can debug(analyze) the kernel by attaching > to the linux kernel program running on a remote machine(qemu virtual > machine). To test an application which uses our device(the device model is > in qemu too), I compiled a device driver against kernel 5.4.188 and the > linux application and can do insmod the driver and run the application. > Now something is wrong and I have panic while running the application. I > can debug linux kernel itself, but I don't know where the kernel module > was loaded, so the debugger cannot debug the driver module. How can I > debug the device driver? (or even the application? in case I need to > someday). I remember by first getting the loaded address of the kernel > module, and doing add-symbol-file for the driver image relative to that > loaded address, it is possible to do kernel module debug. I think this is > what driver developers will be doing always. Please tell me how I can do > it. If this is possible, it will save many days for me. > > Thank you! > Chan Kim _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
