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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-29 16:16:12 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-29 16:16:12 -0800 |
| commit | ad0b40fa944628d6f30b40266a599b285d70a266 (patch) | |
| tree | 988262db8c25a94dbacf0312330df81668b0bb83 /arch | |
| parent | ec1cc55d6fa0b34029419634125fadc77dce1e88 (diff) | |
| parent | 03590cb56d5df7367ccb9e6e0127593254401c42 (diff) | |
| download | lwn-ad0b40fa944628d6f30b40266a599b285d70a266.tar.gz lwn-ad0b40fa944628d6f30b40266a599b285d70a266.zip | |
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"Just one fix for a -fstack-protector-strong problem from Kees Cook,
and adding the new copy_file_range syscall"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: wire up copy_file_range() syscall
ARM: 8500/1: fix atags_to_fdt with stack-protector-strong
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/boot/compressed/Makefile | 9 | ||||
| -rw-r--r-- | arch/arm/include/uapi/asm/unistd.h | 1 | ||||
| -rw-r--r-- | arch/arm/kernel/calls.S | 1 |
3 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 4c23a68a0917..7a6a58ef8aaf 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -106,6 +106,15 @@ ORIG_CFLAGS := $(KBUILD_CFLAGS) KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS)) endif +# -fstack-protector-strong triggers protection checks in this code, +# but it is being used too early to link to meaningful stack_chk logic. +nossp_flags := $(call cc-option, -fno-stack-protector) +CFLAGS_atags_to_fdt.o := $(nossp_flags) +CFLAGS_fdt.o := $(nossp_flags) +CFLAGS_fdt_ro.o := $(nossp_flags) +CFLAGS_fdt_rw.o := $(nossp_flags) +CFLAGS_fdt_wip.o := $(nossp_flags) + ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj) asflags-y := -DZIMAGE diff --git a/arch/arm/include/uapi/asm/unistd.h b/arch/arm/include/uapi/asm/unistd.h index ede692ffa32e..5dd2528e9e45 100644 --- a/arch/arm/include/uapi/asm/unistd.h +++ b/arch/arm/include/uapi/asm/unistd.h @@ -417,6 +417,7 @@ #define __NR_userfaultfd (__NR_SYSCALL_BASE+388) #define __NR_membarrier (__NR_SYSCALL_BASE+389) #define __NR_mlock2 (__NR_SYSCALL_BASE+390) +#define __NR_copy_file_range (__NR_SYSCALL_BASE+391) /* * The following SWIs are ARM private. diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index ac368bb068d1..dfc7cd6851ad 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -400,6 +400,7 @@ CALL(sys_userfaultfd) CALL(sys_membarrier) CALL(sys_mlock2) + CALL(sys_copy_file_range) #ifndef syscalls_counted .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls #define syscalls_counted |