patch-2.2.0-pre5 linux/arch/m68k/kernel/ptrace.c

• Lines: 20
• Date: Tue Jan 5 11:20:43 1999
• Orig file: v2.2.0-pre4/linux/arch/m68k/kernel/ptrace.c
• Orig date: Thu Nov 12 16:21:18 1998

diff -u --recursive --new-file v2.2.0-pre4/linux/arch/m68k/kernel/ptrace.c linux/arch/m68k/kernel/ptrace.c
@@ -375,7 +375,9 @@
 		case PTRACE_PEEKDATA: {
 			unsigned long tmp;
 
+			down(&child->mm->mmap_sem);
 			ret = read_long(child, addr, &tmp);
+			up(&child->mm->mmap_sem);
 			if (ret >= 0)
 				ret = put_user(tmp, (unsigned long *) data);
 			goto out;
@@ -408,7 +410,9 @@
       /* when I and D space are separate, this will have to be fixed. */
 		case PTRACE_POKETEXT: /* write the word at location addr. */
 		case PTRACE_POKEDATA:
+			down(&child->mm->mmap_sem);
 			ret = write_long(child,addr,data);
+			up(&child->mm->mmap_sem);
 			goto out;
 
 		case PTRACE_POKEUSR: /* write the word at location addr in the USER area */