diff options
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/Kconfig | 1 | ||||
| -rw-r--r-- | arch/um/Makefile | 8 | ||||
| -rw-r--r-- | arch/um/kernel/sysrq.c | 3 | ||||
| -rw-r--r-- | arch/um/kernel/um_arch.c | 2 | ||||
| -rw-r--r-- | arch/um/os-Linux/user_syms.c | 1 |
5 files changed, 13 insertions, 2 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 78de31ac1da7..ad4ff3b0e91e 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -6,6 +6,7 @@ config UML bool default y select ARCH_EPHEMERAL_INODES + select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_KCOV select ARCH_HAS_STRNCPY_FROM_USER diff --git a/arch/um/Makefile b/arch/um/Makefile index f2fe63bfd819..f1d4d67157be 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -132,10 +132,18 @@ export LDS_ELF_FORMAT := $(ELF_FORMAT) # The wrappers will select whether using "malloc" or the kernel allocator. LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc +# Avoid binutils 2.39+ warnings by marking the stack non-executable and +# ignorning warnings for the kallsyms sections. +LDFLAGS_EXECSTACK = -z noexecstack +ifeq ($(CONFIG_LD_IS_BFD),y) +LDFLAGS_EXECSTACK += $(call ld-option,--no-warn-rwx-segments) +endif + LD_FLAGS_CMDLINE = $(foreach opt,$(KBUILD_LDFLAGS),-Wl,$(opt)) # Used by link-vmlinux.sh which has special support for um link export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) +export LDFLAGS_vmlinux := $(LDFLAGS_EXECSTACK) # When cleaning we don't include .config, so we don't include # TT or skas makefiles and don't clean skas_ptregs.h. diff --git a/arch/um/kernel/sysrq.c b/arch/um/kernel/sysrq.c index 7452f70d50d0..746715379f12 100644 --- a/arch/um/kernel/sysrq.c +++ b/arch/um/kernel/sysrq.c @@ -48,7 +48,8 @@ void show_stack(struct task_struct *task, unsigned long *stack, break; if (i && ((i % STACKSLOTS_PER_LINE) == 0)) pr_cont("\n"); - pr_cont(" %08lx", *stack++); + pr_cont(" %08lx", READ_ONCE_NOCHECK(*stack)); + stack++; } printk("%sCall Trace:\n", loglvl); diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index e0de60e503b9..d9e023c78f56 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -33,7 +33,7 @@ #include "um_arch.h" #define DEFAULT_COMMAND_LINE_ROOT "root=98:0" -#define DEFAULT_COMMAND_LINE_CONSOLE "console=tty" +#define DEFAULT_COMMAND_LINE_CONSOLE "console=tty0" /* Changed in add_arg and setup_arch, which run before SMP is started */ static char __initdata command_line[COMMAND_LINE_SIZE] = { 0 }; diff --git a/arch/um/os-Linux/user_syms.c b/arch/um/os-Linux/user_syms.c index cb667c9225ab..fd575ecbcaec 100644 --- a/arch/um/os-Linux/user_syms.c +++ b/arch/um/os-Linux/user_syms.c @@ -1,4 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 +#define __NO_FORTIFY #include <linux/types.h> #include <linux/module.h> |