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charset="utf-8" To get from arch/x86/entry/vdso/common/vclock_gettime.c to lib/vdso/gettimeofday.c, you need 5 "..", not 4. Proof: $ (cd "$(dirname arch/x86/entry/vdso/common/vclock_gettime.c)" && ls ../../= ../../lib/vdso/gettimeofday.c) ls: cannot access '../../../../lib/vdso/gettimeofday.c': No such file or di= rectory $ (cd "$(dirname arch/x86/entry/vdso/common/vclock_gettime.c)" && ls ../../= ../../../lib/vdso/gettimeofday.c) ../../../../../lib/vdso/gettimeofday.c I'm blaming the commit below because it moved vclock_gettime.c from arch/x86/entry/vdso/vclock_gettime.c to arch/x86/entry/vdso/common/vclock_gettime.c without updating the relative include path. This shows up on an x86 allmodconfig build, I don't really know why it hasn't been reported so far. The fix, though, is to make the include path a bit more robust. Benefit from the fact that arch/x86/entry/vdso/common/Makefile.include sets up "flags-y +=3D -I$(srctree)", and just specify the include path relative to the kernel root directory. This was done in a few places in the blamed commit, but here it was missed. Fixes: 693c819fedcd ("x86/entry/vdso: Refactor the vdso build") Signed-off-by: Vladimir Oltean --- arch/x86/entry/vdso/common/vclock_gettime.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/entry/vdso/common/vclock_gettime.c b/arch/x86/entry/v= dso/common/vclock_gettime.c index 027b7e88d753..57066f346b3f 100644 --- a/arch/x86/entry/vdso/common/vclock_gettime.c +++ b/arch/x86/entry/vdso/common/vclock_gettime.c @@ -13,7 +13,7 @@ #include #include =20 -#include "../../../../lib/vdso/gettimeofday.c" +#include "lib/vdso/gettimeofday.c" =20 int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *= tz) { --=20 2.43.0