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Date: Sun, 10 Jan 2021 18:28:09 -0700 From: Nathan Chancellor <natechancellor@...il.com> To: Alexander Lobakin <alobakin@...me> Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>, Arnd Bergmann <arnd@...db.de>, Nick Desaulniers <ndesaulniers@...gle.com>, Huacai Chen <chenhuacai@...nel.org>, Pei Huang <huangpei@...ngson.cn>, Kees Cook <keescook@...omium.org>, Fangrui Song <maskray@...gle.com>, Jiaxun Yang <jiaxun.yang@...goat.com>, Ralf Baechle <ralf@...ux-mips.org>, Corey Minyard <cminyard@...sta.com>, linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org, stable@...r.kernel.org, clang-built-linux@...glegroups.com Subject: Re: [PATCH v5 mips-next 5/9] MIPS: vmlinux.lds.S: explicitly catch .rel.dyn symbols On Sun, Jan 10, 2021 at 11:56:34AM +0000, Alexander Lobakin wrote: > According to linker warnings, both GCC and LLVM generate '.rel.dyn' > symbols: > > mips-alpine-linux-musl-ld: warning: orphan section `.rel.dyn' > from `init/main.o' being placed in section `.rel.dyn' > > Link-time assertion shows that this section is sometimes empty, > sometimes not, depending on machine bitness and the compiler [0]: > > LD .tmp_vmlinux.kallsyms1 > mips64-linux-gnu-ld: Unexpected run-time relocations (.rel) detected! > > Just use the ARM64 approach and declare it in vmlinux.lds.S closer > to __init_end. > > [0] https://lore.kernel.org/linux-mips/20210109111259.GA4213@alpha.franken.de > > Reported-by: Thomas Bogendoerfer <tsbogend@...ha.franken.de> > Signed-off-by: Alexander Lobakin <alobakin@...me> Reviewed-by: Nathan Chancellor <natechancellor@...il.com> > --- > arch/mips/kernel/vmlinux.lds.S | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S > index 10d8f0dcb76b..70bba1ff08da 100644 > --- a/arch/mips/kernel/vmlinux.lds.S > +++ b/arch/mips/kernel/vmlinux.lds.S > @@ -137,6 +137,11 @@ SECTIONS > PERCPU_SECTION(1 << CONFIG_MIPS_L1_CACHE_SHIFT) > #endif > > + .rel.dyn : ALIGN(8) { > + *(.rel) > + *(.rel*) > + } > + > #ifdef CONFIG_MIPS_ELF_APPENDED_DTB > .appended_dtb : AT(ADDR(.appended_dtb) - LOAD_OFFSET) { > *(.appended_dtb) > -- > 2.30.0 > >
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