patch-2.0.34 linux/kernel/fork.c

• Lines: 18
• Date: Wed Jun 3 15:17:50 1998
• Orig file: v2.0.33/linux/kernel/fork.c
• Orig date: Tue Mar 10 13:19:09 1998

diff -u --recursive --new-file v2.0.33/linux/kernel/fork.c linux/kernel/fork.c
@@ -136,7 +136,9 @@
 			exit_mmap(mm);
 			goto free_mm;
 		}
+		down(&mm->mmap_sem);
 		if (dup_mmap(mm)) {
+			up(&mm->mmap_sem);
 			tsk->mm = NULL;
 			exit_mmap(mm);
 			free_page_tables(mm);
@@ -144,6 +146,7 @@
 			kfree(mm);
 			return -ENOMEM;
 		}
+		up(&mm->mmap_sem);
 		return 0;
 	}
 	SET_PAGE_DIR(tsk, current->mm->pgd);