Hi Petr, After merging the printk tree, today's linux-next build (powerpc ppc64_defconfig) failed like this: In file included from include/linux/ftrace.h:11:0, from include/linux/perf_event.h:48, from include/linux/trace_events.h:10, from include/trace/syscall.h:7, from include/linux/syscalls.h:82, from init/do_mounts.h:5, from init/do_mounts_initrd.c:22: include/linux/kallsyms.h: In function 'dereference_symbol_descriptor': include/linux/kallsyms.h:63:8: error: implicit declaration of function '__module_address' [-Werror=implicit-function-declaration] mod = __module_address((unsigned long)ptr); ^ include/linux/kallsyms.h:67:9: error: implicit declaration of function 'dereference_module_function_descriptor' [-Werror=implicit-function-declaration] ptr = dereference_module_function_descriptor(mod, ptr); ^ and many more ... Caused by commit 78675fe41d57 ("symbol lookup: introduce dereference_symbol_descriptor()") I have used the printk tree from next-20171206 (with its version of the above patch reverted due to yesterday's error) for today. -- Cheers, Stephen Rothwell -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html