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virtio_console: fix order of fields cols and rows

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commit 5326ab737a upstream.

According to section 5.3.6.2 (Multiport Device Operation) of the virtio
spec(version 1.2) a control buffer with the event VIRTIO_CONSOLE_RESIZE
is followed by a virtio_console_resize struct containing cols then rows.
The kernel implements this the wrong way around (rows then cols) resulting
in the two values being swapped.

Signed-off-by: Maximilian Immanuel Brandtner <maxbr@linux.ibm.com>
Message-Id: <20250324144300.905535-1-maxbr@linux.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cc: Filip Hejsek <filip.hejsek@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Maximilian Immanuel Brandtner
2026-01-11 15:22:32 +01:00
committed by Greg Kroah-Hartman
parent 8d8a670c1c
commit f6dcbd2bbe
1 changed files with 1 additions and 1 deletions
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drivers/char/virtio_console.c
+1 -1
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@@ -1612,8 +1612,8 @@ static void handle_control_message(struct virtio_device *vdev,
break;
case VIRTIO_CONSOLE_RESIZE: {
struct {
__virtio16 rows;
__virtio16 cols;
__virtio16 rows;
} size;
if (!is_console_port(port))