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Pravin B Shelar f89e57c4f5 vxlan: Fix kernel crash on rmmod. 
vxlan exit module unregisters vxlan net and then it unregisters
rtnl ops which triggers vxlan_dellink() from __rtnl_kill_links().
vxlan_dellink() deletes vxlan-dev from vxlan_list which has
list-head in vxlan-net-struct but that is already gone due to
net-unregister. That is how we are getting following crash.

Following commit fixes the crash by fixing module exit path.

BUG: unable to handle kernel paging request at ffff8804102c8000
IP: [<ffffffff812cc5e9>] __list_del_entry+0x29/0xd0
PGD 2972067 PUD 83e019067 PMD 83df97067 PTE 80000004102c8060
Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
Modules linked in: ---
CPU: 19 PID: 6712 Comm: rmmod Tainted: GF            3.10.0+ #95
Hardware name: Dell Inc. PowerEdge R620/0KCKR5, BIOS 1.4.8 10/25/2012
task: ffff88080c47c580 ti: ffff88080ac50000 task.ti: ffff88080ac50000
RIP: 0010:[<ffffffff812cc5e9>]  [<ffffffff812cc5e9>]
__list_del_entry+0x29/0xd0
RSP: 0018:ffff88080ac51e08  EFLAGS: 00010206
RAX: ffff8804102c8000 RBX: ffff88040f0d4b10 RCX: dead000000200200
RDX: ffff8804102c8000 RSI: ffff88080ac51e58 RDI: ffff88040f0d4b10
RBP: ffff88080ac51e08 R08: 0000000000000001 R09: 2222222222222222
R10: 2222222222222222 R11: 2222222222222222 R12: ffff88080ac51e58
R13: ffffffffa07b8840 R14: ffffffff81ae48c0 R15: ffff88080ac51e58
FS:  00007f9ef105c700(0000) GS:ffff88082a800000(0000)
knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8804102c8000 CR3: 00000008227e5000 CR4: 00000000000407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Stack:
 ffff88080ac51e28 ffffffff812cc6a1 2222222222222222 ffff88040f0d4000
 ffff88080ac51e48 ffffffffa07b3311 ffff88040f0d4000 ffffffff81ae49c8
 ffff88080ac51e98 ffffffff81492fc2 ffff88080ac51e58 ffff88080ac51e58
Call Trace:
 [<ffffffff812cc6a1>] list_del+0x11/0x40
 [<ffffffffa07b3311>] vxlan_dellink+0x51/0x70 [vxlan]
 [<ffffffff81492fc2>] __rtnl_link_unregister+0xa2/0xb0
 [<ffffffff8149448e>] rtnl_link_unregister+0x1e/0x30
 [<ffffffffa07b7b7c>] vxlan_cleanup_module+0x1c/0x2f [vxlan]
 [<ffffffff810c9b31>] SyS_delete_module+0x1d1/0x2c0
 [<ffffffff812b8a0e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
 [<ffffffff81582f42>] system_call_fastpath+0x16/0x1b
Code: eb 9f 55 48 8b 17 48 b9 00 01 10 00 00 00 ad de 48 8b 47 08 48 89
e5 48 39 ca 74 29 48 b9 00 02 20 00 00 00 ad de 48 39 c8 74 7a <4c> 8b
00 4c 39 c7 75 53 4c 8b 42 08 4c 39 c7 75 2b 48 89 42 08
RIP  [<ffffffff812cc5e9>] __list_del_entry+0x29/0xd0
 RSP <ffff88080ac51e08>
CR2: ffff8804102c8000

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-11 11:45:36 -07:00
..
accessibility
…
acpi
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
2013-07-04 10:29:23 -07:00
amba
…
ata
Merge branch 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
2013-07-03 19:49:46 -07:00
atm
net, atm/ambassader: convert skb->tail into skb_tail_pointer(skb)
2013-06-17 17:12:20 -07:00
auxdisplay
…
base
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
2013-07-09 16:04:31 -07:00
bcma
bcma: add support for BCM43142
2013-06-27 13:42:16 -04:00
block
Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze
2013-07-10 10:16:07 -07:00
bluetooth
Bluetooth: Add missing reset_resume dev_pm_ops
2013-06-23 00:23:53 +01:00
bus
ARM SoC device tree changes
2013-07-02 14:23:01 -07:00
cdrom
drivers/cdrom/cdrom.c: use kzalloc() for failing hardware
2013-07-03 16:07:25 -07:00
char
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
2013-07-09 16:04:31 -07:00
clk
Power management and ACPI updates for 3.11-rc1
2013-07-03 14:35:40 -07:00
clocksource
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-07-06 14:09:38 -07:00
connector
…
cpufreq
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2013-07-04 11:40:58 -07:00
cpuidle
Power management and ACPI updates for 3.11-rc1
2013-07-03 14:35:40 -07:00
crypto
crypto: talitos: use sg_pcopy_to_buffer()
2013-07-09 10:33:30 -07:00
dca
…
devfreq
Merge branch 'akpm' (updates from Andrew Morton)
2013-07-03 17:12:13 -07:00
dio
…
dma
drivers/dma/iop-adma.c: fix new warnings
2013-07-09 10:33:19 -07:00
edac
Add MCE signatures for family 0x15, models 30-3f.
2013-07-03 13:11:18 -07:00
eisa
…
extcon
drivers: avoid format string in dev_set_name
2013-07-03 16:07:41 -07:00
firewire
…
firmware
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
2013-07-04 10:29:23 -07:00
fmc
FMC: fix error handling in probe() function
2013-06-24 16:23:25 -07:00
gpio
Power management and ACPI updates for 3.11-rc1
2013-07-03 14:35:40 -07:00
gpu
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
2013-07-09 16:04:31 -07:00
hid
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2013-07-04 15:35:08 -07:00
hsi
drivers: avoid format string in dev_set_name
2013-07-03 16:07:41 -07:00
hv
drivers: hv: allocate synic structures before hv_synic_init()
2013-06-24 16:24:17 -07:00
hwmon
hwmon: (lm63) Drop redundant safety on cache lifetime
2013-07-08 14:18:24 +02:00
hwspinlock
…
i2c
Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2013-07-04 14:02:09 -07:00
ide
drivers: avoid format string in dev_set_name
2013-07-03 16:07:41 -07:00
idle
…
iio
For the 3.11 merge we only have one new MFD driver for the Kontron PLD.
2013-07-10 11:10:27 -07:00
infiniband
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2013-07-09 18:24:39 -07:00
input
For the 3.11 merge we only have one new MFD driver for the Kontron PLD.
2013-07-10 11:10:27 -07:00
iommu
drivers/iommu/msm_iommu_dev.c: fix leak and clean up error paths
2013-07-09 10:33:20 -07:00
ipack
…
irqchip
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-07-02 16:14:35 -07:00
isdn
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2013-07-09 18:24:39 -07:00
leds
leds: mc13783: Fix "uninitialized variable" warning
2013-07-02 08:44:02 -07:00
lguest
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2013-07-04 11:40:58 -07:00
macintosh
macintosh/windfarm: Remove obsolete cleanup for clientdata
2013-07-01 11:46:56 +10:00
mailbox
…
md
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2013-07-04 11:40:58 -07:00
media
IEEE 1394 (FireWire) subsystem changes post v3.10:
2013-07-10 11:02:58 -07:00
memory
memory: tegra30-mc: Fix IRQ handler.
2013-06-17 16:46:06 -07:00
memstick
drivers/memstick/host/r592.c: convert to module_pci_driver
2013-07-03 16:08:06 -07:00
message
drivers: avoid format strings in names passed to alloc_workqueue()
2013-07-03 16:07:41 -07:00
mfd
For the 3.11 merge we only have one new MFD driver for the Kontron PLD.
2013-07-10 11:10:27 -07:00
misc
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2013-07-04 11:40:58 -07:00
mmc
MMC highlights for 3.11:
2013-07-10 11:16:00 -07:00
mtd
A couple of fixes and clean-ups, allow for assigning user-defined
2013-07-05 12:09:48 -07:00
net
vxlan: Fix kernel crash on rmmod.
2013-07-11 11:45:36 -07:00
nfc
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2013-07-09 18:24:39 -07:00
ntb
…
nubus
…
of
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2013-07-09 18:24:39 -07:00
oprofile
…
parisc
parisc: fix LMMIO mismatch between PAT length and MASK register
2013-07-09 22:09:16 +02:00
parport
Merge branch 'akpm' (updates from Andrew Morton)
2013-07-03 17:12:13 -07:00
pci
Merge branch 'akpm' (updates from Andrew Morton)
2013-07-03 17:12:13 -07:00
pcmcia
Driver core patches for 3.11-rc1
2013-07-02 11:44:19 -07:00
pinctrl
Pin control changes for the v3.11 kernel cycle:
2013-07-03 11:48:03 -07:00
platform
drivers: avoid format string in dev_set_name
2013-07-03 16:07:41 -07:00
pnp
Power management and ACPI updates for 3.11-rc1
2013-07-03 14:35:40 -07:00
power
Nothing exciting this time, just assorted fixes and cleanups.
2013-07-10 11:13:00 -07:00
pps
pps-gpio: add device-tree binding and support
2013-07-03 16:08:06 -07:00
ps3
…
ptp
build some drivers only when compile-testing
2013-06-24 16:41:32 -07:00
pwm
pwm: pwm-tiehrpwm: Use clk_enable/disable instead clk_prepare/unprepare.
2013-06-26 23:23:54 +02:00
rapidio
rapidio: change endpoint device name format
2013-07-03 16:08:05 -07:00
regulator
For the 3.11 merge we only have one new MFD driver for the Kontron PLD.
2013-07-10 11:10:27 -07:00
remoteproc
…
reset
…
rpmsg
…
rtc
For the 3.11 merge we only have one new MFD driver for the Kontron PLD.
2013-07-10 11:10:27 -07:00
s390
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2013-07-09 18:24:39 -07:00
sbus
…
scsi
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2013-07-09 18:24:39 -07:00
sfi
…
sh
Merge branch 'pm-assorted'
2013-06-28 13:01:40 +02:00
sn
…
spi
Merge branch 'akpm' (updates from Andrew Morton)
2013-07-03 17:12:13 -07:00
ssb
ssb/trivial: replace numeric with standard PM state macros
2013-06-28 22:11:48 -07:00
staging
IEEE 1394 (FireWire) subsystem changes post v3.10:
2013-07-10 11:02:58 -07:00
target
iscsi-target: Remove left over v3.10-rc debug printks
2013-06-20 16:47:41 -07:00
tc
…
thermal
thermal: exynos: Support both EXYNOS4X12 SoCs
2013-06-19 01:31:50 +09:00
tty
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2013-07-04 15:35:08 -07:00
uio
uio: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT
2013-07-03 16:07:26 -07:00
usb
For the 3.11 merge we only have one new MFD driver for the Kontron PLD.
2013-07-10 11:10:27 -07:00
uwb
drivers: avoid format string in dev_set_name
2013-07-03 16:07:41 -07:00
vfio
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
2013-07-04 10:29:23 -07:00
vhost
vhost-net: fix use-after-free in vhost_net_flush
2013-07-09 12:55:48 -07:00
video
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
2013-07-09 16:04:31 -07:00
virt
…
virtio
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2013-07-09 18:24:39 -07:00
vlynq
…
vme
vme: vme_tsi148.c: fix error return code in tsi148_probe()
2013-06-24 16:23:25 -07:00
w1
drivers/w1/slaves/w1_ds2408.c: add magic sequence to disable P0 test mode
2013-07-03 16:08:06 -07:00
watchdog
For the 3.11 merge we only have one new MFD driver for the Kontron PLD.
2013-07-10 11:10:27 -07:00
xen
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-07-06 14:09:38 -07:00
zorro
zorro: switch to fixed_size_llseek()
2013-06-29 12:57:28 +04:00
Kconfig
For the 3.11 merge we only have one new MFD driver for the Kontron PLD.
2013-07-10 11:10:27 -07:00
Makefile
For the 3.11 merge we only have one new MFD driver for the Kontron PLD.
2013-07-10 11:10:27 -07:00