diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/Kconfig | 1 | ||||
| -rw-r--r-- | arch/s390/Kconfig.debug | 14 | ||||
| -rw-r--r-- | arch/s390/lib/Makefile | 1 | ||||
| -rw-r--r-- | arch/s390/lib/usercopy.c | 8 |
4 files changed, 1 insertions, 23 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index bda6ba6f3cf..ce640aff61a 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -91,6 +91,7 @@ config S390 select ARCH_INLINE_WRITE_UNLOCK_BH select ARCH_INLINE_WRITE_UNLOCK_IRQ select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE + select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS select ARCH_SAVE_PAGE_KEYS if HIBERNATION select ARCH_WANT_IPC_PARSE_VERSION select BUILDTIME_EXTABLE_SORT diff --git a/arch/s390/Kconfig.debug b/arch/s390/Kconfig.debug index fc32a2df497..c56878e1245 100644 --- a/arch/s390/Kconfig.debug +++ b/arch/s390/Kconfig.debug @@ -17,20 +17,6 @@ config STRICT_DEVMEM If you are unsure, say Y. -config DEBUG_STRICT_USER_COPY_CHECKS - def_bool n - prompt "Strict user copy size checks" - ---help--- - Enabling this option turns a certain set of sanity checks for user - copy operations into compile time warnings. - - The copy_from_user() etc checks are there to help test if there - are sufficient security checks on the length argument of - the copy operation, by having gcc prove that the argument is - within bounds. - - If unsure, or if you run an older (pre 4.4) gcc, say N. - config S390_PTDUMP bool "Export kernel pagetable layout to userspace via debugfs" depends on DEBUG_KERNEL diff --git a/arch/s390/lib/Makefile b/arch/s390/lib/Makefile index 6ab0d0b5cec..20b0e97a7df 100644 --- a/arch/s390/lib/Makefile +++ b/arch/s390/lib/Makefile @@ -3,7 +3,6 @@ # lib-y += delay.o string.o uaccess_std.o uaccess_pt.o -obj-y += usercopy.o obj-$(CONFIG_32BIT) += div64.o qrnnd.o ucmpdi2.o mem32.o obj-$(CONFIG_64BIT) += mem64.o lib-$(CONFIG_64BIT) += uaccess_mvcos.o diff --git a/arch/s390/lib/usercopy.c b/arch/s390/lib/usercopy.c deleted file mode 100644 index 14b363fec8a..00000000000 --- a/arch/s390/lib/usercopy.c +++ /dev/null @@ -1,8 +0,0 @@ -#include <linux/module.h> -#include <linux/bug.h> - -void copy_from_user_overflow(void) -{ - WARN(1, "Buffer overflow detected!\n"); -} -EXPORT_SYMBOL(copy_from_user_overflow); |