Jason Andryuk 666d1084c1 xen-netfront: Fix hang on device removal ...

commit c2d2e6738a upstream.

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: 5b5971df3b ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-04-24 09:36:25 +02:00

..

appletalk

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

arcnet

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

bonding

bonding: process the err returned by dev_set_allmulti properly in bond_enslave

2018-04-12 12:32:25 +02:00

caif

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

can

can: cc770: Fix use after free in cc770_tx_interrupt()

2018-03-28 18:24:45 +02:00

cris

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

dsa

net: dsa: mv88e6xxx: Unregister MDIO bus on error path

2018-02-25 11:08:00 +01:00

ethernet

net/mlx4_core: Fix memory leak while delete slave's resources

2018-04-12 12:32:27 +02:00

fddi

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

fjes

networking: introduce and use skb_put_data()

2017-06-16 11:48:37 -04:00

hamradio

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

hippi

hippi: Fix a Fix a possible sleep-in-atomic bug in rr_close

2018-02-25 11:08:04 +01:00

hyperv

hv_netvsc: Fix the TX/RX buffer default sizes

2018-03-24 11:01:22 +01:00

ieee802154

net: ieee802154: adf7242: Fix bug if defined DEBUG

2018-03-19 08:42:49 +01:00

ipvlan

ipvlan: add L2 check for packets arriving via virtual devices

2018-03-19 08:42:56 +01:00

phy

net: phy: Tell caller result of phy_change()

2018-03-31 18:10:39 +02:00

plip

net: deprecate eth_change_mtu, remove usage

2016-10-13 09:36:57 -04:00

ppp

pptp: remove a buggy dst release in pptp_connect()

2018-04-12 12:32:24 +02:00

slip

slip: Check if rstate is initialized before uncompressing

2018-04-19 08:56:16 +02:00

team

team: move dev_mc_sync after master_upper_dev_link in team_port_add

2018-04-12 12:32:27 +02:00

usb

lan78xx: Correctly indicate invalid OTP

2018-04-19 08:56:16 +02:00

vmxnet3

vmxnet3: repair memory leak

2018-01-31 14:03:49 +01:00

wan

hdlc_ppp: carrier detect ok, don't turn off negotiation

2018-03-08 22:41:08 -08:00

wimax

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

wireless

ath9k: Protect queue draining by rcu_read_lock()

2018-04-19 08:56:20 +02:00

xen-netback

xen-netfront, xen-netback: Use correct minimum MTU values

2017-10-16 16:00:44 -04:00

dummy.c

dummy: Remove references to NETIF_F_UFO.

2017-07-17 09:52:57 -07:00

eql.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

geneve.c

geneve: fix fill_info when link down

2017-12-14 09:53:11 +01:00

gtp.c

gtp: Initialize 64-bit per-cpu stats correctly

2017-08-01 20:06:07 -07:00

ifb.c

net: add netlink_ext_ack argument to rtnl_link_ops.validate

2017-06-26 23:13:22 -04:00

Kconfig

x86/lguest: Remove lguest support

2017-08-24 09:57:28 +02:00

LICENSE.SRC

…

loopback.c

net: Fix inconsistent teardown and release of private netdev state.

2017-06-07 15:53:24 -04:00

macsec.c

macsec: fix memory leaks when skb_to_sgvec fails

2017-10-11 14:07:20 -07:00

macvlan.c

macvlan: filter out unsupported feature flags

2018-03-31 18:10:39 +02:00

macvtap.c

tap: reference to KVA of an unloaded module causes kernel panic

2017-10-28 19:17:21 +09:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mdio.c

net: mdio: add mdio45_ethtool_ksettings_get

2017-01-02 16:59:10 -05:00

mii.c

net/{mii, smsc}: Make mii_ethtool_get_link_ksettings and smc_netdev_get_ecmd return void

2017-06-05 11:00:42 -04:00

netconsole.c

netconsole: Remove duplicate "netconsole: " logging prefix

2017-06-13 12:57:40 -04:00

nlmon.c

net: add netlink_ext_ack argument to rtnl_link_ops.validate

2017-06-26 23:13:22 -04:00

ntb_netdev.c

ntb_netdev: set the net_device's parent

2017-07-06 11:30:08 -04:00

rionet.c

net: convert sk_buff.users from atomic_t to refcount_t

2017-07-01 07:39:07 -07:00

sb1000.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

Space.c

…

sungem_phy.c

drivers/net/sungem: add const to mii_phy_ops structures

2017-06-08 15:32:47 -04:00

tap.c

net: accept UFO datagrams from tuntap and packet

2017-12-17 15:07:58 +01:00

tun.c

tuntap: disable preemption during XDP processing

2018-03-08 22:41:18 -08:00

veth.c

veth: set peer GSO values

2018-03-19 08:42:54 +01:00

virtio_net.c

virtio_net: Disable interrupts if napi_complete_done rescheduled napi

2018-03-19 08:42:54 +01:00

vrf.c

vrf: Fix use after free and double free in vrf_finish_output

2018-04-12 12:32:24 +02:00

vsockmon.c

net: Fix inconsistent teardown and release of private netdev state.

2017-06-07 15:53:24 -04:00

vxlan.c

vxlan: update skb dst pmtu on tx path

2018-03-03 10:24:26 +01:00

xen-netfront.c

xen-netfront: Fix hang on device removal

2018-04-24 09:36:25 +02:00