LU-9289 nodemap: fix fileset string length issue

[fs/lustre-release.git] / lustre / ptlrpc / nodemap_lproc.c

diff --git a/lustre/ptlrpc/nodemap_lproc.c b/lustre/ptlrpc/nodemap_lproc.c
index c384785..6da0fd3 100644 (file)
--- a/lustre/ptlrpc/nodemap_lproc.c
+++ b/lustre/ptlrpc/nodemap_lproc.c
@@ -220,7 +220,8 @@ nodemap_fileset_seq_write(struct file *file,
        if (count > PATH_MAX)
                RETURN(-EINVAL);
 
-       OBD_ALLOC(nm_fileset, count);
+       OBD_ALLOC(nm_fileset, count + 1);
+       /* OBD_ALLOC zero-fills the buffer */
        if (nm_fileset == NULL)
                RETURN(-ENOMEM);
 
@@ -233,7 +234,7 @@ nodemap_fileset_seq_write(struct file *file,
 
        rc = count;
 out:
-       OBD_FREE(nm_fileset, count);
+       OBD_FREE(nm_fileset, count + 1);
 
        return rc;
 }