The Kconfig for CONFIG_STRICT_DEVMEM is missing despite being
used in mmap.c. Add it.
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit
d253b4406df69fa7a74231769d6f6ad80dc33063)
Signed-off-by: Mark Brown <broonie@linaro.org>
Conflicts:
arch/arm64/Kconfig.debug
Enables the display of the minimum amount of free stack which each
task has ever had available in the sysrq-T output.
Enables the display of the minimum amount of free stack which each
task has ever had available in the sysrq-T output.
+config STRICT_DEVMEM
+ bool "Filter access to /dev/mem"
+ depends on MMU
+ help
+ If this option is disabled, you allow userspace (root) access to all
+ of memory, including kernel and userspace memory. Accidental
+ access to this is obviously disastrous, but specific access can
+ be used by people debugging the kernel.
+
+ If this option is switched on, the /dev/mem file only allows
+ userspace access to memory mapped peripherals.
+
+ If in doubt, say Y.
+
config EARLY_PRINTK
bool "Early printk support"
default y
config EARLY_PRINTK
bool "Early printk support"
default y