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4f4178f3bb
linux/drivers/net
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Bjørn Mork 4f4178f3bb net: cdc_mbim: __vlan_find_dev_deep need rcu_read_lock 
Fixes this warning introduced by commit 5b8f15f78e
("net: cdc_mbim: handle IPv6 Neigbor Solicitations"):

===============================
[ INFO: suspicious RCU usage. ]
3.15.0-rc3 #213 Tainted: G        W  O
-------------------------------
net/8021q/vlan_core.c:69 suspicious rcu_dereference_check() usage!

other info that might help us debug this:

rcu_scheduler_active = 1, debug_locks = 1
no locks held by ksoftirqd/0/3.

stack backtrace:
CPU: 0 PID: 3 Comm: ksoftirqd/0 Tainted: G        W  O  3.15.0-rc3 #213
Hardware name: LENOVO 2776LEG/2776LEG, BIOS 6EET55WW (3.15 ) 12/19/2011
 0000000000000001 ffff880232533bf0 ffffffff813a5ee6 0000000000000006
 ffff880232530090 ffff880232533c20 ffffffff81076b94 0000000000000081
 0000000000000000 ffff8802085ac000 ffff88007fc8ea00 ffff880232533c50
Call Trace:
 [<ffffffff813a5ee6>] dump_stack+0x4e/0x68
 [<ffffffff81076b94>] lockdep_rcu_suspicious+0xfa/0x103
 [<ffffffff813978a6>] __vlan_find_dev_deep+0x54/0x94
 [<ffffffffa04a1938>] cdc_mbim_rx_fixup+0x379/0x66a [cdc_mbim]
 [<ffffffff813ab76f>] ? _raw_spin_unlock_irqrestore+0x3a/0x49
 [<ffffffff81079671>] ? trace_hardirqs_on_caller+0x192/0x1a1
 [<ffffffffa059bd10>] usbnet_bh+0x59/0x287 [usbnet]
 [<ffffffff8104067d>] tasklet_action+0xbb/0xcd
 [<ffffffff81040057>] __do_softirq+0x14c/0x30d
 [<ffffffff81040237>] run_ksoftirqd+0x1f/0x50
 [<ffffffff8105f13e>] smpboot_thread_fn+0x172/0x18e
 [<ffffffff8105efcc>] ? SyS_setgroups+0xdf/0xdf
 [<ffffffff810594b0>] kthread+0xb5/0xbd
 [<ffffffff813a84b1>] ? __wait_for_common+0x13b/0x170
 [<ffffffff810593fb>] ? __kthread_parkme+0x5c/0x5c
 [<ffffffff813b147c>] ret_from_fork+0x7c/0xb0
 [<ffffffff810593fb>] ? __kthread_parkme+0x5c/0x5c

Fixes: 5b8f15f78e ("net: cdc_mbim: handle IPv6 Neigbor Solicitations")
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-07 15:09:52 -04:00
..
appletalk
arcnet
bonding net: bonding: Fix format string mismatch in bond_sysfs.c 2014-04-28 14:48:16 -04:00
caif
can can: slcan: Fix spinlock variant 2014-04-24 22:32:41 +02:00
cris
dsa
ethernet net: macb: Fix race between HW and driver 2014-05-05 17:11:18 -04:00
fddi
hamradio yam: replace del_timer by del_timer_sync 2014-03-27 15:28:06 -04:00
hippi
hyperv hyperv: Properly handle checksum offload 2014-04-30 16:12:23 -04:00
ieee802154 at86rf230: fix __at86rf230_read_subreg function 2014-04-15 00:08:22 -04:00
irda
phy net phy: Check for aneg completion before setting state to PHY_RUNNING 2014-05-02 15:50:57 -04:00
plip
ppp net: ppp: use sk_unattached_filter api 2014-03-31 00:45:09 -04:00
slip slip: fix spinlock variant 2014-04-27 23:35:12 -04:00
team team: forbid incorrect fall-through in notifier 2014-04-24 13:26:32 -04:00
usb net: cdc_mbim: __vlan_find_dev_deep need rcu_read_lock 2014-05-07 15:09:52 -04:00
vmxnet3 vmxnet3: Call dev_kfree_skb_any instead of dev_kfree_skb. 2014-03-24 21:19:23 -07:00
wan driver/net: cosa driver uses udelay incorrectly 2014-04-15 00:08:22 -04:00
wimax wimax/i2400m: remove open-coded skb_cow_head. 2014-03-29 17:49:47 -04:00
wireless rtl8192cu: Fix unbalanced irq enable in error path of rtl92cu_hw_init() 2014-04-30 12:22:52 -04:00
xen-netback xen-netback: Trivial format string fix 2014-04-04 10:49:53 -04:00
dummy.c net: Replace u64_stats_fetch_begin_bh to u64_stats_fetch_begin_irq 2014-03-14 22:41:36 -04:00
eql.c
ifb.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-03-29 18:48:54 -04:00
Kconfig netpoll: Remove dead packet receive code (CONFIG_NETPOLL_TRAP) 2014-03-17 15:48:12 -04:00
LICENSE.SRC
loopback.c net: Replace u64_stats_fetch_begin_bh to u64_stats_fetch_begin_irq 2014-03-14 22:41:36 -04:00
macvlan.c Revert "macvlan : fix checksums error when we are in bridge mode" 2014-04-30 16:12:22 -04:00
macvtap.c mactap: Fix checksum errors for non-gso packets in bridge mode 2014-04-30 16:12:22 -04:00
Makefile
mdio.c
mii.c
netconsole.c
nlmon.c net: nlmon: flag nlmon devs with LLTX/SG 2014-03-28 16:49:47 -04:00
ntb_netdev.c NTB: Code Style Clean-up 2014-04-07 10:59:19 -07:00
rionet.c rapidio: rework device hierarchy and introduce mport class of devices 2014-04-07 16:36:07 -07:00
sb1000.c
Space.c
sungem_phy.c
tun.c drivers/net: Use RCU_INIT_POINTER(x, NULL) in tun.c 2014-03-27 00:18:09 -04:00
veth.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-03-29 18:48:54 -04:00
virtio_net.c virtio_net: zero is an invald queue_pairs number 2014-04-22 16:01:35 -04:00
vxlan.c vxlan: ensure to advertise the right fdb remote 2014-04-23 15:01:09 -04:00
xen-netfront.c drivers: net: xen-netfront: fix array initialization bug 2014-04-12 16:49:06 -04:00