fault-inject: parse as natural 1-based value for fail-nth write interface

[karo-tx-linux.git] / fs / proc / base.c

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 5d93512beea11878efe6cd2984e84ba23a728c51..c1fdaecb8d23c99009d2aec5ec635f86b99ebd5b 100644 (file)
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1360,7 +1360,8 @@ static ssize_t proc_fail_nth_write(struct file *file, const char __user *buf,
                                   size_t count, loff_t *ppos)
 {
        struct task_struct *task;
-       int err, n;
+       int err;
+       unsigned int n;
 
        task = get_proc_task(file_inode(file));
        if (!task)
@@ -1368,12 +1369,10 @@ static ssize_t proc_fail_nth_write(struct file *file, const char __user *buf,
        put_task_struct(task);
        if (task != current)
                return -EPERM;
-       err = kstrtoint_from_user(buf, count, 0, &n);
+       err = kstrtouint_from_user(buf, count, 0, &n);
        if (err)
                return err;
-       if (n < 0 || n == INT_MAX)
-               return -EINVAL;
-       current->fail_nth = n + 1;
+       current->fail_nth = n;
        return count;
 }