version 4.14.41-1
This commit is contained in:
parent
a7fcf5c375
commit
acee68f1ab
@ -1,53 +0,0 @@
|
||||
From c2d2e6738a209f0f9dffa2dc8e7292fc45360d61 Mon Sep 17 00:00:00 2001
|
||||
From: Jason Andryuk <jandryuk@gmail.com>
|
||||
Date: Wed, 28 Feb 2018 07:23:23 -0500
|
||||
Subject: [PATCH] xen-netfront: Fix hang on device removal
|
||||
|
||||
A toolstack may delete the vif frontend and backend xenstore entries
|
||||
while xen-netfront is in the removal code path. In that case, the
|
||||
checks for xenbus_read_driver_state would return XenbusStateUnknown, and
|
||||
xennet_remove would hang indefinitely. This hang prevents system
|
||||
shutdown.
|
||||
|
||||
xennet_remove must be able to handle XenbusStateUnknown, and
|
||||
netback_changed must also wake up the wake_queue for that state as well.
|
||||
|
||||
Fixes: 5b5971df3bc2 ("xen-netfront: remove warning when unloading module")
|
||||
|
||||
Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
|
||||
Cc: Eduardo Otubo <otubo@redhat.com>
|
||||
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
|
||||
Signed-off-by: Juergen Gross <jgross@suse.com>
|
||||
---
|
||||
drivers/net/xen-netfront.c | 7 ++++++-
|
||||
1 file changed, 6 insertions(+), 1 deletion(-)
|
||||
|
||||
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
|
||||
index 8328d395e332..3127bc8633ca 100644
|
||||
--- a/drivers/net/xen-netfront.c
|
||||
+++ b/drivers/net/xen-netfront.c
|
||||
@@ -2005,7 +2005,10 @@ static void netback_changed(struct xenbus_device *dev,
|
||||
case XenbusStateInitialised:
|
||||
case XenbusStateReconfiguring:
|
||||
case XenbusStateReconfigured:
|
||||
+ break;
|
||||
+
|
||||
case XenbusStateUnknown:
|
||||
+ wake_up_all(&module_unload_q);
|
||||
break;
|
||||
|
||||
case XenbusStateInitWait:
|
||||
@@ -2136,7 +2139,9 @@ static int xennet_remove(struct xenbus_device *dev)
|
||||
xenbus_switch_state(dev, XenbusStateClosing);
|
||||
wait_event(module_unload_q,
|
||||
xenbus_read_driver_state(dev->otherend) ==
|
||||
- XenbusStateClosing);
|
||||
+ XenbusStateClosing ||
|
||||
+ xenbus_read_driver_state(dev->otherend) ==
|
||||
+ XenbusStateUnknown);
|
||||
|
||||
xenbus_switch_state(dev, XenbusStateClosed);
|
||||
wait_event(module_unload_q,
|
||||
--
|
||||
2.17.0
|
||||
|
@ -25,9 +25,6 @@ patches.xen/pci_op-cleanup.patch
|
||||
# Fix for MSI support with stubdoms
|
||||
patches.xen/xen-pciback-add-attribute-to-allow-MSI-enable-flag-w.patch
|
||||
|
||||
# Fix for hang on netfront removal
|
||||
patches.xen/c2d2e6738a20-xen-netfront-Fix-hang-on-device-removal.patch
|
||||
|
||||
# Hardware-specific fixes, backported from newer kernel and/or developers branches
|
||||
patches.backports/v2-2-2-Input-synaptics---Lenovo-X1-Carbon-5-should-use-SMBUS-RMI.patch
|
||||
patches.backports/Input-synaptics---add-Intertouch-support-on-X1-Carbon-6th-and-X280.patch
|
||||
|
Loading…
Reference in New Issue
Block a user