Arnd Bergmann <arnd@xxxxxxxx> writes: > On Wed, Oct 2, 2019 at 12:54 AM Eric W. Biederman <ebiederm@xxxxxxxxxxxx> wrote: >> Kees Cook <keescook@xxxxxxxxxxxx> writes: >> > On Tue, Oct 01, 2019 at 01:36:32PM -0500, Eric W. Biederman wrote: >> > >> > I think you can actually take this further and remove (or at least >> > empty) the uapi/linux/sysctl.h file too. >> >> I copied everyone who had put this into a defconfig and I will wait a >> little more to see if anyone screams. I think it is a safe guess that >> several of the affected configurations are dead (or at least >> unmaintained) as I received 17 bounces when copying everyone. > > Looking at the arm defconfigs: > >> arch/arm/configs/axm55xx_defconfig:CONFIG_SYSCTL_SYSCALL=y > > No notable work on this platform since it got sold to Intel in 2014. > I think they still use it but not with mainline kernels that lack support > for most drivers and the later chips. > >> arch/arm/configs/keystone_defconfig:CONFIG_SYSCTL_SYSCALL=y > > Not that old either, but this hardware is mostly obsoleted by newer variants > that we support with the arm64 defconfig. > >> arch/arm/configs/lpc32xx_defconfig:CONFIG_SYSCTL_SYSCALL=y >> arch/arm/configs/moxart_defconfig:CONFIG_SYSCTL_SYSCALL=y > > Ancient hardware, but still in active use. These tend to have very little > RAM, but they both enable CONFIG_PROC_FS. > >> arch/arm/configs/qcom_defconfig:CONFIG_SYSCTL_SYSCALL=y >> arch/arm/configs/zx_defconfig:CONFIG_SYSCTL_SYSCALL=y > > These are for older Qualcomm and LG chips that tend to be used > with Android rather than the defconfig here. Maybe double-check > if the official android-common tree enables SYSCTL_SYSCALL. I just looked quickly at: https://android.googlesource.com/kernel/configs/ I don't see the string SYSCTL mentioned anywhere. Much less SYSCTL_SYSCALL. Eric
