diff options
Diffstat (limited to 'arch/x86/kernel/dumpstack.h')
| -rw-r--r-- | arch/x86/kernel/dumpstack.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/x86/kernel/dumpstack.h b/arch/x86/kernel/dumpstack.h index 29e5f7c845b..e1a93be4fd4 100644 --- a/arch/x86/kernel/dumpstack.h +++ b/arch/x86/kernel/dumpstack.h @@ -14,6 +14,8 @@ #define get_bp(bp) asm("movq %%rbp, %0" : "=r" (bp) :) #endif +#include <linux/uaccess.h> + extern void show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs, unsigned long *stack, unsigned long bp, char *log_lvl); @@ -30,6 +32,11 @@ struct stack_frame { unsigned long return_address; }; +struct stack_frame_ia32 { + u32 next_frame; + u32 return_address; +}; + static inline unsigned long rewind_frame_pointer(int n) { struct stack_frame *frame; @@ -37,8 +44,10 @@ static inline unsigned long rewind_frame_pointer(int n) get_bp(frame); #ifdef CONFIG_FRAME_POINTER - while (n--) - frame = frame->next_frame; + while (n--) { + if (probe_kernel_address(&frame->next_frame, frame)) + break; + } #endif return (unsigned long)frame; |