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OpenCloudOS-Kernel
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OpenCloudOS-Kernel/net/bridge
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Eduardo Valentin 1bfb159673 bridge: mdb: fix leak on complete_info ptr on fail path 
We currently get the following kmemleak report:
unreferenced object 0xffff8800039d9820 (size 32):
  comm "softirq", pid 0, jiffies 4295212383 (age 792.416s)
  hex dump (first 32 bytes):
    00 0c e0 03 00 88 ff ff ff 02 00 00 00 00 00 00  ................
    00 00 00 01 ff 11 00 02 86 dd 00 00 ff ff ff ff  ................
  backtrace:
    [<ffffffff8152b4aa>] kmemleak_alloc+0x4a/0xa0
    [<ffffffff811d8ec8>] kmem_cache_alloc_trace+0xb8/0x1c0
    [<ffffffffa0389683>] __br_mdb_notify+0x2a3/0x300 [bridge]
    [<ffffffffa038a0ce>] br_mdb_notify+0x6e/0x70 [bridge]
    [<ffffffffa0386479>] br_multicast_add_group+0x109/0x150 [bridge]
    [<ffffffffa0386518>] br_ip6_multicast_add_group+0x58/0x60 [bridge]
    [<ffffffffa0387fb5>] br_multicast_rcv+0x1d5/0xdb0 [bridge]
    [<ffffffffa037d7cf>] br_handle_frame_finish+0xcf/0x510 [bridge]
    [<ffffffffa03a236b>] br_nf_hook_thresh.part.27+0xb/0x10 [br_netfilter]
    [<ffffffffa03a3738>] br_nf_hook_thresh+0x48/0xb0 [br_netfilter]
    [<ffffffffa03a3fb9>] br_nf_pre_routing_finish_ipv6+0x109/0x1d0 [br_netfilter]
    [<ffffffffa03a4400>] br_nf_pre_routing_ipv6+0xd0/0x14c [br_netfilter]
    [<ffffffffa03a3c27>] br_nf_pre_routing+0x197/0x3d0 [br_netfilter]
    [<ffffffff814a2952>] nf_iterate+0x52/0x60
    [<ffffffff814a29bc>] nf_hook_slow+0x5c/0xb0
    [<ffffffffa037ddf4>] br_handle_frame+0x1a4/0x2c0 [bridge]

This happens when switchdev_port_obj_add() fails. This patch
frees complete_info object in the fail path.

Reviewed-by: Vallish Vaidyeshwara <vallish@amazon.com>
Signed-off-by: Eduardo Valentin <eduval@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2017-07-11 20:01:39 -07:00
..
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2017-07-06 14:02:22 +01:00
Kconfig bridge: Add vlan filtering infrastructure 2013-02-13 19:41:46 -05:00
Makefile bridge: per vlan dst_metadata netlink support 2017-02-03 15:21:22 -05:00
br.c net: bridge: Receive notification about successful FDB offload 2017-06-08 14:16:25 -04:00
br_device.c net: Fix inconsistent teardown and release of private netdev state. 2017-06-07 15:53:24 -04:00
br_fdb.c bridge: allow ext learned entries to change ports 2017-07-04 01:49:44 -07:00
br_forward.c bridge: add per-port broadcast flood flag 2017-04-27 16:34:29 -04:00
br_if.c bridge: Export VLAN filtering state 2017-05-26 15:18:44 -04:00
br_input.c bridge: drop netfilter fake rtable unconditionally 2017-03-13 13:01:10 -07:00
br_ioctl.c bridge: move to workqueue gc 2017-02-06 22:53:13 -05:00
br_mdb.c bridge: mdb: fix leak on complete_info ptr on fail path 2017-07-11 20:01:39 -07:00
br_multicast.c bridge: Export multicast enabled state 2017-05-26 15:18:44 -04:00
br_netfilter_hooks.c net: convert nf_bridge_info.use from atomic_t to refcount_t 2017-07-01 07:39:07 -07:00
br_netfilter_ipv6.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
br_netlink.c net: add netlink_ext_ack argument to rtnl_link_ops.slave_changelink 2017-06-26 23:13:22 -04:00
br_netlink_tunnel.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
br_nf_core.c net: Remove protocol from struct dst_ops 2015-03-09 16:06:10 -04:00
br_private.h net, bridge: convert net_bridge_vlan.refcnt from atomic_t to refcount_t 2017-07-04 22:35:16 +01:00
br_private_stp.h net: bridge: add helper to set topology change 2016-12-10 21:27:23 -05:00
br_private_tunnel.h bridge: vlan dst_metadata hooks in ingress and egress paths 2017-02-03 15:21:22 -05:00
br_stp.c bridge: move to workqueue gc 2017-02-06 22:53:13 -05:00
br_stp_bpdu.c net: introduce __skb_put_[zero, data, u8] 2017-06-20 13:30:14 -04:00
br_stp_if.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-06-06 22:20:08 -04:00
br_stp_timer.c bridge: start hello_timer when enabling KERNEL_STP in br_stp_start 2017-05-21 13:33:28 -04:00
br_switchdev.c net: bridge: Add support for notifying devices about FDB add/del 2017-06-08 14:16:25 -04:00
br_sysfs_br.c net: bridge: constify attribute_group structures. 2017-06-29 15:48:52 -04:00
br_sysfs_if.c bridge: add per-port broadcast flood flag 2017-04-27 16:34:29 -04:00
br_vlan.c net, bridge: convert net_bridge_vlan.refcnt from atomic_t to refcount_t 2017-07-04 22:35:16 +01:00
br_vlan_tunnel.c bridge: vlan_tunnel: explicitly reset metadata attrs to NULL on failure 2017-02-17 13:33:41 -05:00