Paul Durrant a254d8f9a8 xen-netback: don't vfree() queues under spinlock ... This leads to a BUG of the following form: [ 174.512861] switch: port 2(vif3.0) entered disabled state [ 174.522735] BUG: sleeping function called from invalid context at /home/build/linux-linus/mm/vmalloc.c:1441 [ 174.523451] in_atomic(): 1, irqs_disabled(): 0, pid: 28, name: xenwatch [ 174.524131] CPU: 1 PID: 28 Comm: xenwatch Tainted: G W 4.10.0upstream-11073-g4977ab6-dirty #1 [ 174.524819] Hardware name: MSI MS-7680/H61M-P23 (MS-7680), BIOS V17.0 03/14/2011 [ 174.525517] Call Trace: [ 174.526217] show_stack+0x23/0x60 [ 174.526899] dump_stack+0x5b/0x88 [ 174.527562] ___might_sleep+0xde/0x130 [ 174.528208] __might_sleep+0x35/0xa0 [ 174.528840] ? _raw_spin_unlock_irqrestore+0x13/0x20 [ 174.529463] ? __wake_up+0x40/0x50 [ 174.530089] remove_vm_area+0x20/0x90 [ 174.530724] __vunmap+0x1d/0xc0 [ 174.531346] ? delete_object_full+0x13/0x20 [ 174.531973] vfree+0x40/0x80 [ 174.532594] set_backend_state+0x18a/0xa90 [ 174.533221] ? dwc_scan_descriptors+0x24d/0x430 [ 174.533850] ? kfree+0x5b/0xc0 [ 174.534476] ? xenbus_read+0x3d/0x50 [ 174.535101] ? xenbus_read+0x3d/0x50 [ 174.535718] ? xenbus_gather+0x31/0x90 [ 174.536332] ? ___might_sleep+0xf6/0x130 [ 174.536945] frontend_changed+0x6b/0xd0 [ 174.537565] xenbus_otherend_changed+0x7d/0x80 [ 174.538185] frontend_changed+0x12/0x20 [ 174.538803] xenwatch_thread+0x74/0x110 [ 174.539417] ? woken_wake_function+0x20/0x20 [ 174.540049] kthread+0xe5/0x120 [ 174.540663] ? xenbus_printf+0x50/0x50 [ 174.541278] ? __kthread_init_worker+0x40/0x40 [ 174.541898] ret_from_fork+0x21/0x2c [ 174.548635] switch: port 2(vif3.0) entered disabled state This patch defers the vfree() until after the spinlock is released. Reported-by: Juergen Gross <jgross@suse.com> Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-03-03 09:36:15 -08:00
..
appletalk
arcnet	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
bonding	bonding: use ETH_MAX_MTU as max mtu	2017-03-02 14:43:20 -08:00
caif
can
cris
dsa	net:dsa:mv88e6xxx: use watchdog ops for 6097 chip	2017-02-14 11:45:28 -05:00
ethernet	ixgbe: Limit use of 2K buffers on architectures with 256B or larger cache lines	2017-03-02 18:03:39 -08:00
fddi
fjes
hamradio	driver core patches for 4.11-rc1	2017-02-22 11:44:32 -08:00
hippi
hyperv	netvsc: fix use-after-free in netvsc_change_mtu()	2017-03-02 14:41:36 -08:00
ieee802154
ipvlan	ipvtap: IP-VLAN based tap driver	2017-02-11 20:59:41 -05:00
irda	net: irda: au1k_ir: drop useless include	2017-02-14 14:51:03 -05:00
phy	net: phy: Add missing driver check in phy_aneg_done()	2017-02-24 11:42:55 -05:00
plip
ppp
slip
team
usb	net: usb: asix_devices: fix missing return code check on call to asix_write_medium_mode	2017-03-01 09:50:58 -08:00
vmxnet3
wan	net/wan: add MODULE_LICENSE for fsl_ucc_hdlc	2017-02-17 15:20:43 -05:00
wimax	scripts/spelling.txt: add "varible" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
wireless	This contains just the average.h change in order to get it	2017-03-02 14:39:17 -08:00
xen-netback	xen-netback: don't vfree() queues under spinlock	2017-03-03 09:36:15 -08:00
dummy.c
eql.c
geneve.c	geneve: lock RCU on TX path	2017-03-01 09:58:31 -08:00
gtp.c	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
ifb.c
Kconfig	vmxnet3: prevent building with 64K pages	2017-02-17 15:25:49 -05:00
LICENSE.SRC
loopback.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-02-11 02:31:11 -05:00
macsec.c	macsec: fix validation failed in asynchronous operation.	2017-02-21 13:13:51 -05:00
macvlan.c	tap: Abstract type of virtual interface from tap implementation	2017-02-11 20:59:41 -05:00
macvtap.c	tap: tap as an independent module	2017-02-11 20:59:41 -05:00
Makefile	ipvtap: IP-VLAN based tap driver	2017-02-11 20:59:41 -05:00
mdio.c
mii.c
netconsole.c
nlmon.c
ntb_netdev.c
rionet.c
sb1000.c
Space.c
sungem_phy.c
tap.c	tap: tap as an independent module	2017-02-11 20:59:41 -05:00
tun.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-02-07 16:29:30 -05:00
veth.c
virtio_net.c	average: change to declare precision, not factor	2017-03-02 08:32:46 +01:00
vrf.c	net: rename dst_neigh_output back to neigh_output	2017-02-11 21:25:18 -05:00
vxlan.c	vxlan: lock RCU on TX path	2017-03-01 09:58:31 -08:00
xen-netfront.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-02-22 10:15:09 -08:00