linux-kernel - Re: Undefined reference to `l1tf_vmx_mitigation' without CONFIG_KVM

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20180815120908.65257639@job.localdomain>
Date:   Wed, 15 Aug 2018 12:09:08 +0300
From:   Dmitrii Tcvetkov <demfloro@...floro.ru>
To:     linux-kernel@...r.kernel.org
Subject: Re: Undefined reference to `l1tf_vmx_mitigation' without
 CONFIG_KVM_INTEL

On Wed, 15 Aug 2018 11:42:00 +0300
Dmitrii Tcvetkov <demfloro@...floro.ru> wrote:

> By build testing 4.18.1-rc2 from
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> linux-4.18.y with my custom kernel config I got build error:
>   CHK     include/generated/autoksyms.h
>   GEN     .version
>   CHK     include/generated/compile.h
>   AR      built-in.a
>   LD      vmlinux.o
>   MODPOST vmlinux.o
> ld: arch/x86/kvm/x86.o: in function `kvm_get_arch_capabilities':
> x86.c:(.text+0x46f2): undefined reference to `l1tf_vmx_mitigation'
> make[1]: *** [Makefile:1010: vmlinux] Error 1
> make: *** [Makefile:979: autoksyms_recursive] Error 2
> 
> Build is successful with
> CONFIG_KVM=y
> CONFIG_KVM_INTEL=y
> CONFIG_KVM_AMD=y
> but fails if only
> CONFIG_KVM=y
> CONFIG_KVM_AMD=y
> are selected.
> 
> The issue also reproduces on current mainline master (31130a16d459de)
> with the same error.

Sorry for the noise, only now saw the patch for the issue:
http://lkml.iu.edu/hypermail/linux/kernel/1808.1/04513.html