On Fri, Mar 26, 2021 at 10:20:09AM -0400, Steven Rostedt wrote: > On Fri, 26 Mar 2021 21:03:49 +0900 > Masami Hiramatsu <mhiramat@xxxxxxxxxx> wrote: > > > I confirmed this is not related to this series, but occurs when I build kernels with different > > configs without cleanup. > > > > Once I build kernel with CONFIG_UNWIND_GUESS=y (for testing), and after that, > > I build kernel again with CONFIG_UNWIND_ORC=y (but without make clean), this > > happened. In this case, I guess ORC data might be corrupted? > > When I cleanup and rebuild, the stacktrace seems correct. > > Hmm, that should be fixed. Seems like we are missing a dependency somewhere. Thomas reported something similar: for example arch/x86/kernel/head_64.o doesn't get rebuilt when changing unwinders. https://lkml.kernel.org/r/87tuqublrb.fsf@xxxxxxxxxxxxxxxxxxxxxxx Masahiro, any idea how we can force a full tree rebuild when changing the unwinder? -- Josh
