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| author | Dave Jones <davej@redhat.com> | 2006-04-18 17:19:55 -0500 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2006-04-18 17:19:55 -0500 |
| commit | f1f76afd71e0f17af9a35fcb649f4bab53304a4d (patch) | |
| tree | a56257b13a0eda4a9b7e950c3b85adad16341b80 /arch/powerpc/kernel/process.c | |
| parent | 530515a06f90c0831732709efee4a99497bd2b7c (diff) | |
| parent | 385910f2b275a636238f70844f1b6da9fda6f2da (diff) | |
Merge ../linus
Diffstat (limited to 'arch/powerpc/kernel/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index f698aa77127e..2dd47d2dd998 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -45,6 +45,7 @@ #include <asm/prom.h> #include <asm/machdep.h> #include <asm/time.h> +#include <asm/syscalls.h> #ifdef CONFIG_PPC64 #include <asm/firmware.h> #endif @@ -362,7 +363,11 @@ static void show_instructions(struct pt_regs *regs) if (!(i % 8)) printk("\n"); - if (BAD_PC(pc) || __get_user(instr, (unsigned int *)pc)) { + /* We use __get_user here *only* to avoid an OOPS on a + * bad address because the pc *should* only be a + * kernel address. + */ + if (BAD_PC(pc) || __get_user(instr, (unsigned int __user *)pc)) { printk("XXXXXXXX "); } else { if (regs->nip == pc) @@ -765,7 +770,7 @@ out: return error; } -static int validate_sp(unsigned long sp, struct task_struct *p, +int validate_sp(unsigned long sp, struct task_struct *p, unsigned long nbytes) { unsigned long stack_page = (unsigned long)task_stack_page(p); @@ -803,6 +808,8 @@ static int validate_sp(unsigned long sp, struct task_struct *p, #define FRAME_MARKER 2 #endif +EXPORT_SYMBOL(validate_sp); + unsigned long get_wchan(struct task_struct *p) { unsigned long ip, sp; @@ -827,7 +834,6 @@ unsigned long get_wchan(struct task_struct *p) } while (count++ < 16); return 0; } -EXPORT_SYMBOL(get_wchan); static int kstack_depth_to_print = 64; |