Under some circumstances, the compiler generates .ctors.* sections. This is seen doing a cross compile of x86_64 from a powerpc64el host:
x86_64-linux-gnu-ld: warning: orphan section `.ctors.65435' from `kernel/trace/trace_clock.o' being placed in section `.ctors.65435' x86_64-linux-gnu-ld: warning: orphan section `.ctors.65435' from `kernel/trace/ftrace.o' being placed in section `.ctors.65435' x86_64-linux-gnu-ld: warning: orphan section `.ctors.65435' from `kernel/trace/ring_buffer.o' being placed in section `.ctors.65435' Include these orphans along with the regular .ctors section. Reported-by: Stephen Rothwell <s...@canb.auug.org.au> Link: https://lore.kernel.org/lkml/20200914132249.40c88...@canb.auug.org.au Tested-by: Stephen Rothwell <s...@canb.auug.org.au> Link: https://lore.kernel.org/lkml/20201004210018.5bbc6...@canb.auug.org.au Fixes: 83109d5d5fba ("x86/build: Warn on orphan section placement") Signed-off-by: Kees Cook <keesc...@chromium.org> --- include/asm-generic/vmlinux.lds.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 5430febd34be..45c8b362ca45 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -684,6 +684,7 @@ #ifdef CONFIG_CONSTRUCTORS #define KERNEL_CTORS() . = ALIGN(8); \ __ctors_start = .; \ + KEEP(*(SORT(.ctors.*))) \ KEEP(*(.ctors)) \ KEEP(*(SORT(.init_array.*))) \ KEEP(*(.init_array)) \ -- 2.25.1
