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
..
accessibility
acpi	This is a few small fixes to the main IPMI driver, make some	2017-02-28 21:06:30 -08:00
amba
android	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
ata	scripts/spelling.txt: add "followings" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
atm	Merge branch 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax	2017-02-28 20:29:41 -08:00
auxdisplay
base	memory-hotplug: use dev_online for memhp_auto_online	2017-02-24 17:46:56 -08:00
bcma
block	Merge branch 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax	2017-02-28 20:29:41 -08:00
bluetooth	btmrvl: fix spelling mistake: "actived" -> "activated"	2017-02-19 00:26:37 +01:00
bus	ARM: SoC driver updates	2017-02-23 15:57:04 -08:00
cdrom	Merge branch 'for-4.11/next' into for-4.11/linus-merge	2017-02-17 14:08:19 -07:00
char	This is a few small fixes to the main IPMI driver, make some	2017-02-28 21:06:30 -08:00
clk	The usual collection of new drivers, non-critical fixes, and updates	2017-02-25 14:28:06 -08:00
clocksource	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-02-20 10:06:32 -08:00
connector
cpufreq	ARM: SoC non-urgent fixes for merge window	2017-02-23 15:28:04 -08:00
cpuidle	powerpc updates for 4.11 part 1.	2017-02-22 10:30:38 -08:00
crypto	Merge branch 'akpm' (patches from Andrew)	2017-02-27 23:09:29 -08:00
dax	mm: replace FAULT_FLAG_SIZE with parameter to huge_fault	2017-02-24 17:46:54 -08:00
dca
devfreq	scripts/spelling.txt: add "followings" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
dio
dma	TTY/Serial driver patches for 4.11-rc1	2017-02-22 12:17:25 -08:00
dma-buf
edac	Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-02-20 12:47:44 -08:00
eisa
extcon	scripts/spelling.txt: add "swithc" pattern and fix typo instances	2017-02-27 18:43:46 -08:00
firewire	Merge branch 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax	2017-02-28 20:29:41 -08:00
firmware	ARM: SoC driver updates	2017-02-23 15:57:04 -08:00
fmc
fpga
fsi
gpio	This is the bulk of GPIO changes for the v4.11 cycle	2017-02-23 08:46:04 -08:00
gpu	Merge branch 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax	2017-02-28 20:29:41 -08:00
hid	scripts/spelling.txt: add "comsume(r)" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
hsi	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
hv
hwmon	scripts/spelling.txt: add "followings" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
hwspinlock
hwtracing	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
i2c	Merge branch 'i2c/for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2017-02-25 14:21:18 -08:00
ide	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide	2017-02-28 10:13:40 -08:00
idle
iio
infiniband	Merge branch 'akpm' (patches from Andrew)	2017-02-27 23:09:29 -08:00
input	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
iommu	iommu/amd: Fix crash when accessing AMD-Vi sysfs entries	2017-02-28 15:48:23 +01:00
ipack
irqchip	IOMMU Updates for Linux v4.11	2017-02-20 16:42:43 -08:00
isdn	scripts/spelling.txt: add "followings" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
leds	leds: class: Add new optional brightness_hw_changed attribute	2017-02-24 23:48:50 -08:00
lguest
lightnvm
macintosh	driver core patches for 4.11-rc1	2017-02-22 11:44:32 -08:00
mailbox
mcb
md	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md	2017-02-24 14:42:19 -08:00
media	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
memory	ARM: SoC driver updates	2017-02-23 15:57:04 -08:00
memstick	Merge branch 'for-4.11/next' into for-4.11/linus-merge	2017-02-17 14:08:19 -07:00
message	SCSI misc on 20170220	2017-02-21 11:51:42 -08:00
mfd	staging/iio driver patches for 4.11-rc1	2017-02-22 12:14:01 -08:00
misc	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
mmc	scripts/spelling.txt: add "intialization" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
mtd	Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm	2017-02-28 11:50:53 -08:00
net	xen-netback: don't vfree() queues under spinlock	2017-03-03 09:36:15 -08:00
nfc	scripts/spelling.txt: add "omited" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
ntb	ntb: ntb_hw_intel: link_poll isn't clearing the pending status properly	2017-02-16 23:11:26 -05:00
nubus
nvdimm
nvme	scripts/spelling.txt: add "embeded" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
nvmem
of	DeviceTree updates for 4.11:	2017-02-22 19:23:14 -08:00
oprofile
parisc
parport	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
pci	scripts/spelling.txt: add "followings" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
pcmcia
perf
phy	pci-v4.11-changes	2017-02-23 11:53:22 -08:00
pinctrl	scripts/spelling.txt: add "overrided" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
platform	platform-drivers-x86 for v4.11-1	2017-02-25 14:35:37 -08:00
pnp
power	scripts/spelling.txt: add "intialization" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
powercap
pps
ps3
ptp	4.11 is going to be a relatively large release for KVM, with a little over	2017-02-22 18:22:53 -08:00
pwm
rapidio	rapidio: use get_user_pages_unlocked()	2017-02-27 18:43:45 -08:00
ras
regulator	regulator: Updates for v4.11	2017-02-20 17:23:57 -08:00
remoteproc	remoteproc: qcom: mdt_loader: Use signed type for offset	2017-02-22 02:07:13 -08:00
reset	ARM: SoC driver updates	2017-02-23 15:57:04 -08:00
rpmsg
rtc	RTC for 4.11	2017-02-27 19:59:21 -08:00
s390	s390/dasd: fix spelling mistake: "supportet" -> "supported"	2017-02-23 13:01:20 +01:00
sbus
scsi	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
sfi
sh
sn
soc	ARM: SoC driver updates	2017-02-23 15:57:04 -08:00
spi	ACPI updates for v4.11-rc1	2017-02-20 17:55:15 -08:00
spmi
ssb
staging	scripts/spelling.txt: add "followings" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
target	Merge branch 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax	2017-02-28 20:29:41 -08:00
tc
thermal	Merge branch 'pm-opp'	2017-02-20 14:22:50 +01:00
thunderbolt
tty	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
uio	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
usb	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
uwb
vfio	VFIO updates for v4.11	2017-02-23 11:26:09 -08:00
vhost
video	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
virt
virtio	mm balloon: umount balloon_mnt when removing vb device	2017-02-24 17:46:56 -08:00
vlynq
vme
w1
watchdog	scripts/spelling.txt: add "partiton" pattern and fix typo instances	2017-02-27 18:43:46 -08:00
xen	mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf	2017-02-24 17:46:54 -08:00
zorro
Kconfig
Makefile	pci-v4.11-changes	2017-02-23 11:53:22 -08:00