Pravin B Shelar f011baf95e vxlan: Fix kernel panic on device delete. ... On vxlan device create if socket create fails vxlan device is not added to hash table. Therefore we need to check if device is in hashtable before we delete it from hlist. Following patch avoid the crash. net-next already has this fix. ---8<--- BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<ffffffffa05f9ca7>] vxlan_dellink+0x77/0xf0 [vxlan] PGD 42b2d9067 PUD 42e04c067 PMD 0 Oops: 0002 [#1] SMP Modules linked in: vxlan(-) Hardware name: Dell Inc. PowerEdge R620/0KCKR5, BIOS 1.4.8 10/25/2012 task: ffff88042ecf8760 ti: ffff88042f106000 task.ti: ffff88042f106000 RIP: 0010:[<ffffffffa05f9ca7>] [<ffffffffa05f9ca7>] vxlan_dellink+0x77/0xf0 [vxlan] RSP: 0018:ffff88042f107e28 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88082af08000 RCX: ffff88083fd80000 RDX: 0000000000000000 RSI: ffff88042f107e58 RDI: ffff88042e12f810 RBP: ffff88042f107e48 R08: ffffffff8166eca0 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88082af087c0 R13: ffff88042e12f000 R14: ffff88042f107e58 R15: ffff88042f107e58 FS: 00007f4ed2de7700(0000) GS:ffff88043fc80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000042e076000 CR4: 00000000000407e0 Stack: ffff88082af08000 ffffffff81654848 ffffffffa05fb4e0 ffffffff81654780 ffff88042f107e98 ffffffff813b9c7a ffff88042f107e58 ffff88042f107e58 ffff88042f107e88 ffffffffa05fb4e0 ffffffffa05fb780 ffff88042f107f18 Call Trace: [<ffffffff813b9c7a>] __rtnl_link_unregister+0xca/0xd0 [<ffffffff813bb0e9>] rtnl_link_unregister+0x19/0x30 [<ffffffffa05faa4c>] vxlan_cleanup_module+0x10/0x2f [vxlan] [<ffffffff81099fef>] SyS_delete_module+0x1cf/0x2c0 [<ffffffff8146c069>] ? do_page_fault+0x9/0x10 [<ffffffff8146f012>] system_call_fastpath+0x16/0x1b Code: 4d 85 ed 0f 84 95 00 00 00 4c 8d a7 c0 07 00 00 49 8d bd 10 08 00 00 e8 28 e8 e6 e0 48 8b 83 c0 07 00 00 49 8b 54 24 08 48 85 c0 <48> 89 02 74 04 48 89 50 08 49 b8 00 02 20 00 00 00 ad de 4d 89 RIP [<ffffffffa05f9ca7>] vxlan_dellink+0x77/0xf0 [vxlan] RSP <ffff88042f107e28> CR2: 0000000000000000 Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2013-09-05 14:31:02 -04:00
..
appletalk
arcnet	arcnet: cleanup sizeof parameter	2013-07-19 17:36:03 -07:00
bonding	bonding: modify only neigh_parms owned by us	2013-08-05 15:19:04 -07:00
caif	drivers/net: caif: fix wrong rtnl_is_locked() usage	2013-07-09 12:55:48 -07:00
can	can: pcan_usb: fix wrong memcpy() bytes length	2013-08-11 21:51:49 -07:00
cris
dsa
ethernet	net: mvneta: implement ->ndo_do_ioctl() to support PHY ioctls	2013-09-05 14:31:01 -04:00
fddi
hamradio
hippi
hyperv	hyperv: Fix the NETIF_F_SG flag setting in netvsc	2013-07-16 23:02:24 -07:00
ieee802154	drivers/net/ieee802154: don't use devm_pinctrl_get_select_default() in probe	2013-07-11 17:18:27 -07:00
irda	via-ircc: don't return zero if via_ircc_open() failed	2013-08-20 13:27:28 -07:00
phy	net: phy: rtl8211: fix interrupt on status link change	2013-08-20 17:10:58 -07:00
plip
ppp
slip
team	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-06-19 16:49:39 -07:00
usb	net: usb: Add HP hs2434 device to ZLP exception table	2013-08-28 18:22:15 -04:00
vmxnet3
wan	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-07-03 14:55:13 -07:00
wimax
wireless	ath9k: Enable PLL fix only for AR9340/AR9330	2013-08-22 14:21:04 -04:00
xen-netback	xen-netback: xenbus.c: use more current logging styles	2013-07-02 00:52:55 -07:00
dummy.c	dummy: fix oops when loading the dummy failed	2013-07-11 11:59:20 -07:00
eql.c
ifb.c	ifb: fix oops when loading the ifb failed	2013-07-11 12:00:05 -07:00
Kconfig	packet: nlmon: virtual netlink monitoring device for packet sockets	2013-06-24 16:39:05 -07:00
LICENSE.SRC
loopback.c
macvlan.c	macvlan: validate flags	2013-08-05 11:02:48 -07:00
macvtap.c	macvtap: Ignore tap features when VNET_HDR is off	2013-08-20 13:09:12 -07:00
Makefile	packet: nlmon: virtual netlink monitoring device for packet sockets	2013-06-24 16:39:05 -07:00
mdio.c
mii.c
netconsole.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2013-07-09 18:24:39 -07:00
nlmon.c	nlmon: use standard rtnetlink link api for add/del devices	2013-07-02 12:53:17 -07:00
ntb_netdev.c
rionet.c	rapidio/rionet: rework driver initialization and removal	2013-07-03 16:08:04 -07:00
sb1000.c
Space.c
sungem_phy.c
tun.c	tun: signedness bug in tun_get_user()	2013-08-15 14:51:23 -07:00
veth.c	veth: add vlan features	2013-07-19 17:36:03 -07:00
virtio_net.c	No real surprises.	2013-07-10 14:50:58 -07:00
vxlan.c	vxlan: Fix kernel panic on device delete.	2013-09-05 14:31:02 -04:00
xen-netfront.c	xen-netfront: pull on receive skb may need to happen earlier	2013-07-17 12:51:19 -07:00