2014年2月25日 · This is not the same as having the guest kernel itself cooperate with debugging via KGDB. If you want to use KGDB, you are going to need to so something like configure KGDB in the kernel build to use the guest side of an emulated serial port, and then tell GDB on the host to use the host end of that emulated port.

2015年8月17日 · However, you now have a serial interface through the same mechanism and that's what we can use for a KGDB connection. So at this point some relatively minor changes are required to the Nexus 6's serial driver (msm_serial_hs_lite.c) to support KGDB (specifically, the ability to perform atomic character I/O operations).

2016年9月14日 · 3) KGDB must be triggered on the target prior to connect. Remote replied unexpectedly to 'vMustReplyEmpty': vMustReplyEmpty. Malformed response to offset query, qOffsets. GDB tries to connect, but the target is not in debug mode. The debug sysrq must be triggered before connecting with GDB. The keyboard shortcut was not working for me.

2011年7月7日 · A loadable kernel module's location in the memory is set only upon insertion of the module. When you set a breakpoint on a module function, gdb consults the module file (.ko) for the address, which is wrong.

I didn't get much info. regarding kgdboe (kgdb over ethernet). I have compiled kernel and enabled kgdb in menuconfig, i have created kernel image using make bzImage on development machine and copied same on target machine, now problem is how to connect both target and development machine. i m not getting parameter set for kgbdoe. Plz help if ...

2016年3月29日 · Enable KGDB* , KGDB_SERIAL*, KGDB_USB*, DEBUG_INFO, DEBUG_INFO_DWARF4, MAGIC_SYSRQ in the kernel config. Compile and install on the TARGET. The main purpose here is to enable KGDB feature & preserve debug information in vmlinux. agent-proxy Setup. agent-proxy acts as a proxy for the TARGET's serial port. It splits up the serial port for ...

kgdb is a remote debugger, so you activate it in your kernel then you attach GDB to it somehow. I say somehow as there seems to be lots of options - see connecting GDB . Given that kgdb is now in the source tree, I'd say going forward this is what you want to be using.

2014年3月17日 · I am not sure whether you are using gdb or kgdb, but I think to debug drivers, you need to use kgdb, not gdb. If you are already using kgdb, then use add-symbol-file command under it. It will help you load symbols which are outside vmlinux. Simple google search will give you lot of information of add-symbol-file.

Special kernel installed that contains symbols, kgdb support etc. Learn how to compile and install a kernel and use in make menuconfig belows configuration. You can search for Sybmbols with F8 or the / key in menuconfig. (E.g. wiki.ubuntu.com. There take care in the first paragraph to execute deb-src before apt-get :) # CONFIG_SERIAL_KGDB_NMI ...

After googling and reading I've set up kgdb over serial line, I can break into the debugger (by stopping the kernel via /proc/sysrq-trigger) and connect from host gdb, which is part of ARM toolchain. Basically I have development board running embedded linux abd the driver I'm debugging, and my PC with two connections to the board - serial and ...