From: Lars Ellenberg <lars.ellenberg@linbit.com>
Date: Mon, 16 Nov 2009 14:58:04 +0000 (+0100)
Subject: add missing state change on corrupt packet header in drbd_recv_header
X-Git-Tag: firefly_0821_release~9833^2~3959^2~46^2~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0b33a9164aca6332bf4a117af5528dea9675d782;p=firefly-linux-kernel-4.4.55.git

add missing state change on corrupt packet header in drbd_recv_header

Otherwise the 'state fixup' in the receiver will change to Unconnected,
but the receiver will terminate itself, and any attempt at 'down'ing
that drbd later will block forever.

see also Bugz. #259

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
---

diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 9bbc509443e5..fb29a75053ef 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -3499,8 +3499,10 @@ static void drbdd(struct drbd_conf *mdev)
 
 	while (get_t_state(&mdev->receiver) == Running) {
 		drbd_thread_current_set_cpu(mdev);
-		if (!drbd_recv_header(mdev, header))
+		if (!drbd_recv_header(mdev, header)) {
+			drbd_force_state(mdev, NS(conn, C_PROTOCOL_ERROR));
 			break;
+		}
 
 		if (header->command < P_MAX_CMD)
 			handler = drbd_cmd_handler[header->command];