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b4e09b29c7
linux/net
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Toshiaki Makita b4e09b29c7 bridge: Fix memory leak when deleting bridge with vlan filtering enabled 
We currently don't call br_vlan_flush() when deleting a bridge, which
leads to memory leak if br->vlan_info is allocated.

Steps to reproduce:
  while :
  do
    brctl addbr br0
    bridge vlan add dev br0 vid 10 self
    brctl delbr br0
  done
We can observe the cache size of corresponding slab entry
(as kmalloc-2048 in SLUB) is increased.

kmemleak output:
unreferenced object 0xffff8800b68a7000 (size 2048):
  comm "bridge", pid 2086, jiffies 4295774704 (age 47.656s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 48 9b 36 00 88 ff ff  .........H.6....
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff815eb6ae>] kmemleak_alloc+0x4e/0xb0
    [<ffffffff8116a1ca>] kmem_cache_alloc_trace+0xca/0x220
    [<ffffffffa03eddd6>] br_vlan_add+0x66/0xe0 [bridge]
    [<ffffffffa03e543c>] br_setlink+0x2dc/0x340 [bridge]
    [<ffffffff8150e481>] rtnl_bridge_setlink+0x101/0x200
    [<ffffffff8150d9d9>] rtnetlink_rcv_msg+0x99/0x260
    [<ffffffff81528679>] netlink_rcv_skb+0xa9/0xc0
    [<ffffffff8150d938>] rtnetlink_rcv+0x28/0x30
    [<ffffffff81527ccd>] netlink_unicast+0xdd/0x190
    [<ffffffff8152807f>] netlink_sendmsg+0x2ff/0x740
    [<ffffffff814e8368>] sock_sendmsg+0x88/0xc0
    [<ffffffff814e8ac8>] ___sys_sendmsg.part.14+0x298/0x2b0
    [<ffffffff814e91de>] __sys_sendmsg+0x4e/0x90
    [<ffffffff814e922e>] SyS_sendmsg+0xe/0x10
    [<ffffffff81601669>] system_call_fastpath+0x16/0x1b
    [<ffffffffffffffff>] 0xffffffffffffffff

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-14 16:16:34 -05:00
..
9p file->f_op is never NULL... 2013-10-24 23:34:54 -04:00
802 mrp: add periodictimer to allow retries when packets get lost 2013-09-23 16:53:52 -04:00
8021q vlan: Implement vlan_dev_get_egress_qos_mask as an inline. 2013-11-11 00:42:07 -05:00
appletalk net: proc_fs: trivial: print UIDs as unsigned int 2013-08-15 14:37:46 -07:00
atm
ax25 ax25: cleanup a range test 2013-10-18 13:56:07 -04:00
batman-adv batman-adv: generalize batman-adv icmp packet handling 2013-10-23 17:03:47 +02:00
bluetooth Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2013-11-08 09:03:10 -05:00
bridge bridge: Fix memory leak when deleting bridge with vlan filtering enabled 2013-11-14 16:16:34 -05:00
caif caif: use pskb_put() instead of reimplementing its functionality 2013-11-07 19:28:59 -05:00
can net: 8021q/bluetooth/bridge/can/ceph: Remove extern from function prototypes 2013-10-19 19:12:11 -04:00
ceph net: 8021q/bluetooth/bridge/can/ceph: Remove extern from function prototypes 2013-10-19 19:12:11 -04:00
core core/dev: do not ignore dmac in dev_forward_skb() 2013-11-14 02:39:53 -05:00
dcb
dccp ipv4: introduce new IP_MTU_DISCOVER mode IP_PMTUDISC_INTERFACE 2013-11-05 21:52:27 -05:00
decnet netfilter: pass hook ops to hookfn 2013-10-14 11:29:31 +02:00
dns_resolver net: strict_strtoul is obsolete, use kstrtoul instead 2013-07-12 16:09:14 -07:00
dsa net: dsa: inherit addr_assign_type along with dev_addr 2013-09-03 20:57:49 -04:00
ethernet ethernet: use likely() for common Ethernet encap 2013-09-30 21:52:53 -07:00
hsr net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0) 2013-11-03 23:20:14 -05:00
ieee802154 6lowpan: release device on error path 2013-11-07 19:11:13 -05:00
ipv4 core/dev: do not ignore dmac in dev_forward_skb() 2013-11-14 02:39:53 -05:00
ipv6 ipv6: protect for_each_sk_fl_rcu in mem_check with rcu_read_lock_bh 2013-11-11 01:25:28 -05:00
ipx net: proc_fs: trivial: print UIDs as unsigned int 2013-08-15 14:37:46 -07:00
irda Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-11-13 17:40:34 +09:00
iucv net: delete __cpuinit usage from all net files 2013-07-14 19:36:58 -04:00
key xfrm: Guard IPsec anti replay window against replay bitmap 2013-09-17 12:17:10 +02:00
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-10-23 16:49:34 -04:00
lapb net/lapb: re-send packets on timeout 2013-09-23 16:52:45 -04:00
llc llc: Use normal etherdevice.h tests 2013-09-03 22:34:47 -04:00
mac80211 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2013-11-08 09:03:10 -05:00
mac802154 6lowpan: set and use mac_len for mac header length 2013-10-30 17:18:46 -04:00
mpls ipip: add GSO/TSO support 2013-10-19 19:36:19 -04:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-11-13 17:40:34 +09:00
netlabel inet: includes a sock_common in request_sock 2013-10-10 00:08:07 -04:00
netlink net: netlink: filter particular protocols from analyzers 2013-09-06 14:43:48 -04:00
netrom
nfc NFC: Fix SE API related sparse warning 2013-10-07 14:18:44 +02:00
openvswitch Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch 2013-11-04 16:25:04 -05:00
packet net: packet: use reciprocal_divide in fanout_demux_hash 2013-08-29 16:43:29 -04:00
phonet net: proc_fs: trivial: print UIDs as unsigned int 2013-08-15 14:37:46 -07:00
rds inet: convert inet_ehash_secret and ipv6_hash_secret to net_get_random_once 2013-10-19 19:45:35 -04:00
rfkill net: rfkill: gpio: add ACPI support 2013-10-28 15:05:25 +01:00
rose
rxrpc net: misc: Remove extern from function prototypes 2013-10-19 19:12:11 -04:00
sched net_sched: tbf: support of 64bit rates 2013-11-09 14:53:37 -05:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-11-04 13:48:30 -05:00
sunrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-11-13 17:40:34 +09:00
tipc tipc: reassembly failures should cause link reset 2013-11-07 18:30:11 -05:00
unix net: unix: inherit SOCK_PASS{CRED, SEC} flags from socket to fix race 2013-10-19 18:50:15 -04:00
vmw_vsock Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-08-16 15:37:26 -07:00
wimax net: misc: Remove extern from function prototypes 2013-10-19 19:12:11 -04:00
wireless Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2013-11-08 09:03:10 -05:00
x25 net: x25: Fix dead URLs in Kconfig 2013-10-29 17:35:17 -04:00
xfrm net: move pskb_put() to core code 2013-11-07 19:28:58 -05:00
compat.c net: heap overflow in __audit_sockaddr() 2013-10-03 16:05:14 -04:00
Kconfig net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0) 2013-11-03 23:20:14 -05:00
Makefile net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0) 2013-11-03 23:20:14 -05:00
nonet.c
socket.c net: heap overflow in __audit_sockaddr() 2013-10-03 16:05:14 -04:00
sysctl_net.c net: Update the sysctl permissions handler to test effective uid/gid 2013-10-07 15:57:56 -04:00