Hi all, After merging the tip tree, today's linux-next build (x86_64 allmodconfig) failed like this: arch/x86/kernel/fpu/core.c: In function 'fpu_alloc_guest_fpstate': arch/x86/kernel/fpu/core.c:187:12: error: implicit declaration of function 'vzalloc'; did you mean 'kzalloc'? [-Werror=implicit-function-declaration] 187 | fpstate = vzalloc(size); | ^~~~~~~ | kzalloc arch/x86/kernel/fpu/core.c:187:10: error: assignment to 'struct fpstate *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion] 187 | fpstate = vzalloc(size); | ^ arch/x86/kernel/fpu/core.c: In function 'fpu_free_guest_fpstate': arch/x86/kernel/fpu/core.c:212:2: error: implicit declaration of function 'vfree'; did you mean 'kfree'? [-Werror=implicit-function-declaration] 212 | vfree(fps); | ^~~~~ | kfree cc1: all warnings being treated as errors Caused by commit 69f6ed1d14c6 ("x86/fpu: Provide infrastructure for KVM FPU cleanup") I have applied the following patch for today (because it was quicker than using the tip tree from next-20211022). From: Stephen Rothwell Date: Mon, 25 Oct 2021 15:04:13 +1100 Subject: [PATCH] x86/fpu: include vmalloc.h for vzalloc etc Fixes: 69f6ed1d14c6 ("x86/fpu: Provide infrastructure for KVM FPU cleanup") Signed-off-by: Stephen Rothwell --- arch/x86/kernel/fpu/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 9c475e2efd4d..c55013fc82ab 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -16,6 +16,7 @@ #include #include +#include #include "context.h" #include "internal.h" -- 2.33.0 -- Cheers, Stephen Rothwell