1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c
index 4362ff260244..abd02ed501cb 100644
--- a/drivers/s390/char/monwriter.c
+++ b/drivers/s390/char/monwriter.c
@@ -110,7 +110,7 @@ static int monwrite_new_hdr(struct mon_private *monpriv)
                 monbuf = kzalloc(sizeof(struct mon_buf), GFP_KERNEL);
                 if (!monbuf)
                         return -ENOMEM;
-                monbuf->data = kzalloc(monbuf->hdr.datalen,
+                monbuf->data = kzalloc(monhdr->datalen,
                                        GFP_KERNEL | GFP_DMA);
                 if (!monbuf->data) {
                         kfree(monbuf);