binfmt_flat: use vm_munmap, we are missing ->mmap_sem there
Al Viro [Wed, 30 May 2012 05:56:23 +0000 (01:56 -0400)]
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/binfmt_flat.c

index 6b2daf9..178cb70 100644 (file)
@@ -562,7 +562,7 @@ static int load_flat_file(struct linux_binprm * bprm,
                                realdatastart = (unsigned long) -ENOMEM;
                        printk("Unable to allocate RAM for process data, errno %d\n",
                                        (int)-realdatastart);
-                       do_munmap(current->mm, textpos, text_len);
+                       vm_munmap(textpos, text_len);
                        ret = realdatastart;
                        goto err;
                }
@@ -586,8 +586,8 @@ static int load_flat_file(struct linux_binprm * bprm,
                }
                if (IS_ERR_VALUE(result)) {
                        printk("Unable to read data+bss, errno %d\n", (int)-result);
-                       do_munmap(current->mm, textpos, text_len);
-                       do_munmap(current->mm, realdatastart, len);
+                       vm_munmap(textpos, text_len);
+                       vm_munmap(realdatastart, len);
                        ret = result;
                        goto err;
                }
@@ -654,7 +654,7 @@ static int load_flat_file(struct linux_binprm * bprm,
                }
                if (IS_ERR_VALUE(result)) {
                        printk("Unable to read code+data+bss, errno %d\n",(int)-result);
-                       do_munmap(current->mm, textpos, text_len + data_len + extra +
+                       vm_munmap(textpos, text_len + data_len + extra +
                                MAX_SHARED_LIBS * sizeof(unsigned long));
                        ret = result;
                        goto err;