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Date: Sun, 28 Jun 2020 08:54:24 +0800 From: Shaokun Zhang <zhangshaokun@...ilicon.com> To: Will Deacon <will@...nel.org> CC: Stephen Rothwell <sfr@...b.auug.org.au>, Linux Next Mailing List <linux-next@...r.kernel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: linux-next: Tree for Jun 24 [build failure on arm64] Hi Will, My apologies for reply later because of a short holiday in China. 在 2020/6/24 18:55, Will Deacon 写道: > On Wed, Jun 24, 2020 at 05:08:56PM +0800, Shaokun Zhang wrote: >> +Will Deacon, >> >> Hi Will, >> >> There's a build failure on arm64: >> >> CALL scripts/atomic/check-atomics.sh >> CALL scripts/checksyscalls.sh >> LD arch/arm64/kernel/vdso/vdso.so.dbg >> ld: unrecognized option '--no-eh-frame-hdr' >> ld: use the --help option for usage information >> arch/arm64/kernel/vdso/Makefile:64: recipe for target >> 'arch/arm64/kernel/vdso/vdso.so.dbg' failed >> make[1]: *** [arch/arm64/kernel/vdso/vdso.so.dbg] Error 1 >> arch/arm64/Makefile:175: recipe for target 'vdso_prepare' failed >> make: *** [vdso_prepare] Error 2 >> >> GCC version is followed: >> gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609 >> >> It seems caused by >> 87676cfca141 arm64: vdso: Disable dwarf unwinding through the sigreturn >> trampoline > > Urgh, binutils quality strikes again. If you're able to reproduce locally, > can you try the diff below, please? All the linkers I have kicking around It works, I saw Jon has already tested it. Thanks your quick reply. Shaokun > seem to support --no-eh-frame-hdr. > > Will > > --->8 > > diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile > index 1e5a940532da..97d3d3632093 100644 > --- a/arch/arm64/kernel/vdso/Makefile > +++ b/arch/arm64/kernel/vdso/Makefile > @@ -23,8 +23,9 @@ btildflags-$(CONFIG_ARM64_BTI_KERNEL) += -z force-bti > # potential future proofing if we end up with internal calls to the exported > # routines, as x86 does (see 6f121e548f83 ("x86, vdso: Reimplement vdso.so > # preparation in build-time C")). > -ldflags-y := -shared -nostdlib -soname=linux-vdso.so.1 --hash-style=sysv \ > - -Bsymbolic --no-eh-frame-hdr --build-id -n $(btildflags-y) -T > +ldflags-y := -shared -nostdlib -soname=linux-vdso.so.1 --hash-style=sysv \ > + -Bsymbolic $(call ld-option, --no-eh-frame-hdr) --build-id -n \ > + $(btildflags-y) -T > > ccflags-y := -fno-common -fno-builtin -fno-stack-protector -ffixed-x18 > ccflags-y += -DDISABLE_BRANCH_PROFILING > > > . >
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