diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/um/Kconfig | 5 | ||||
-rw-r--r-- | arch/um/sys-i386/Makefile | 2 | ||||
-rw-r--r-- | arch/um/sys-i386/bug.c | 20 | ||||
-rw-r--r-- | arch/um/sys-x86_64/Makefile | 2 | ||||
-rw-r--r-- | arch/um/sys-x86_64/bug.c | 20 |
5 files changed, 47 insertions, 2 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 5ac1f29..d32a80e 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -47,6 +47,11 @@ config GENERIC_CALIBRATE_DELAY bool default y +config GENERIC_BUG + bool + default y + depends on BUG + # Used in kernel/irq/manage.c and include/linux/irq.h config IRQ_RELEASE_METHOD bool diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile index 0e32adf..098720b 100644 --- a/arch/um/sys-i386/Makefile +++ b/arch/um/sys-i386/Makefile @@ -1,4 +1,4 @@ -obj-y = bugs.o checksum.o delay.o fault.o ksyms.o ldt.o ptrace.o \ +obj-y = bug.o bugs.o checksum.o delay.o fault.o ksyms.o ldt.o ptrace.o \ ptrace_user.o setjmp.o signal.o sigcontext.o syscalls.o sysrq.o \ sys_call_table.o tls.o diff --git a/arch/um/sys-i386/bug.c b/arch/um/sys-i386/bug.c new file mode 100644 index 0000000..200c8ba --- /dev/null +++ b/arch/um/sys-i386/bug.c @@ -0,0 +1,20 @@ +/* + * Copyright (C) 2006 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL V2 + */ + +#include <linux/uaccess.h> + +/* Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because + * that's not relevent in skas mode. + */ + +int is_valid_bugaddr(unsigned long eip) +{ + unsigned short ud2; + + if (probe_kernel_address((unsigned short __user *)eip, ud2)) + return 0; + + return ud2 == 0x0b0f; +} diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile index f41768b..4d9e5ef 100644 --- a/arch/um/sys-x86_64/Makefile +++ b/arch/um/sys-x86_64/Makefile @@ -4,7 +4,7 @@ # Licensed under the GPL # -obj-y = bugs.o delay.o fault.o ldt.o mem.o ptrace.o ptrace_user.o \ +obj-y = bug.o bugs.o delay.o fault.o ldt.o mem.o ptrace.o ptrace_user.o \ setjmp.o sigcontext.o signal.o syscalls.o syscall_table.o sysrq.o \ ksyms.o tls.o diff --git a/arch/um/sys-x86_64/bug.c b/arch/um/sys-x86_64/bug.c new file mode 100644 index 0000000..200c8ba --- /dev/null +++ b/arch/um/sys-x86_64/bug.c @@ -0,0 +1,20 @@ +/* + * Copyright (C) 2006 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL V2 + */ + +#include <linux/uaccess.h> + +/* Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because + * that's not relevent in skas mode. + */ + +int is_valid_bugaddr(unsigned long eip) +{ + unsigned short ud2; + + if (probe_kernel_address((unsigned short __user *)eip, ud2)) + return 0; + + return ud2 == 0x0b0f; +} |