On Wed, Jan 6, 2016 at 10:17 AM, Pingbo Wen email@example.com wrote:
Hi, Mark & Linus
Thanks for your reply.
在 2016年1月5日，17:18，Linus Walleij firstname.lastname@example.org 写道： There are a few things to think about with KASan, but on v8 it should mostly work out of the box.
I configure it like so:
$(CURDIR)/scripts/config --file $(config_file) \ --enable KASAN \ --enable KASAN_OUTLINE \ --enable STACKTRACE \ --enable SLUB_DEBUG_ON \ --enable TEST_KASAN
I think you can use KASAN_INLINE with GCC 5.1 too.
The result is same, kernel hang in dark:(
I’m going to debug it via JTAG, but should wait for my flyswatter2 JTAG debugger first(I don’t know if it works in armv8, the OpenOCD have some limit support for it). I will update this thread if I get something new:)
Note that the kernel takes a *LONG* time to boot on KASan, so have a lot of patience. Have a coffee and come back. Also note that it populates all shadow memory before even getting to start_kernel() so yeah, debugging using JTAG and/or emulators such as QEMU may be necessary to get anywhere.
Yours, Linus Walleij