编译内核出现如下错误:
arch/x86/kernel/ptrace.c:1472:17: error: conflicting types for ‘syscall_trace_enter’
In file included from /home/rex/Downloads/linux-2.6.32.60/arch/x86/include/asm/vm86.h:130:0,
from /home/rex/Downloads/linux-2.6.32.60/arch/x86/include/asm/processor.h:10,
from /home/rex/Downloads/linux-2.6.32.60/arch/x86/include/asm/thread_info.h:22,
from include/linux/thread_info.h:56,
from include/linux/preempt.h:9,
from include/linux/spinlock.h:50,
from include/linux/seqlock.h:29,
from include/linux/time.h:8,
from include/linux/timex.h:56,
from include/linux/sched.h:56,
from arch/x86/kernel/ptrace.c:11:
/home/rex/Downloads/linux-2.6.32.60/arch/x86/include/asm/ptrace.h:146:13: note: prevIoUs declaration of ‘syscall_trace_enter’ was here
arch/x86/kernel/ptrace.c:1517:17: error: conflicting types for ‘syscall_trace_leave’
In file included from /home/rex/Downloads/linux-2.6.32.60/arch/x86/include/asm/vm86.h:130:0,
from arch/x86/kernel/ptrace.c:11:
/home/rex/Downloads/linux-2.6.32.60/arch/x86/include/asm/ptrace.h:147:13: note: prevIoUs declaration of ‘syscall_trace_leave’ was here
make[2]: *** [arch/x86/kernel/ptrace.o] Error 1
make[1]: *** [arch/x86/kernel] Error 2
make: *** [arch/x86] Error 2
注意红色标注的两行,说明ptrace.c 文件中第1472行的函数syscall_trace_leave和ptrace.h文件中该函数的声明有冲突,只要将ptrace.h文件中的函数声明改得和ptrace.c中的相同即可。
解决方案如下:
vi arch/x86/include/asm/ptrace.h
130行 添加 #include <linux/linkage.h>
原始代码
extern long syscall_trace_enter(struct pt_regs *);
extern void syscall_trace_leave(struct pt_regs *);
extern asmregparm long syscall_trace_enter(struct pt_regs *);
extern asmregparm void syscall_trace_leave(struct pt_regs *);