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Wang Hai ea2fce88d2 mld: fix memory leak in ipv6_mc_destroy_dev() 
Commit a84d01647989 ("mld: fix memory leak in mld_del_delrec()") fixed
the memory leak of MLD, but missing the ipv6_mc_destroy_dev() path, in
which mca_sources are leaked after ma_put().

Using ip6_mc_clear_src() to take care of the missing free.

BUG: memory leak
unreferenced object 0xffff8881113d3180 (size 64):
  comm "syz-executor071", pid 389, jiffies 4294887985 (age 17.943s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 ff 02 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000002cbc483c>] kmalloc include/linux/slab.h:555 [inline]
    [<000000002cbc483c>] kzalloc include/linux/slab.h:669 [inline]
    [<000000002cbc483c>] ip6_mc_add1_src net/ipv6/mcast.c:2237 [inline]
    [<000000002cbc483c>] ip6_mc_add_src+0x7f5/0xbb0 net/ipv6/mcast.c:2357
    [<0000000058b8b1ff>] ip6_mc_source+0xe0c/0x1530 net/ipv6/mcast.c:449
    [<000000000bfc4fb5>] do_ipv6_setsockopt.isra.12+0x1b2c/0x3b30 net/ipv6/ipv6_sockglue.c:754
    [<00000000e4e7a722>] ipv6_setsockopt+0xda/0x150 net/ipv6/ipv6_sockglue.c:950
    [<0000000029260d9a>] rawv6_setsockopt+0x45/0x100 net/ipv6/raw.c:1081
    [<000000005c1b46f9>] __sys_setsockopt+0x131/0x210 net/socket.c:2132
    [<000000008491f7db>] __do_sys_setsockopt net/socket.c:2148 [inline]
    [<000000008491f7db>] __se_sys_setsockopt net/socket.c:2145 [inline]
    [<000000008491f7db>] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2145
    [<00000000c7bc11c5>] do_syscall_64+0xa1/0x530 arch/x86/entry/common.c:295
    [<000000005fb7a3f3>] entry_SYSCALL_64_after_hwframe+0x49/0xb3

Fixes: 1666d49e1d41 ("mld: do not remove mld souce list info when set link down")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Acked-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-15 13:29:39 -07:00
..
6lowpan
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
9p
9p/xen: increase XEN_9PFS_RING_ORDER
2020-06-02 08:00:39 +02:00
802
net: 802: psnap.c: Use built-in RCU list checking
2020-02-24 13:02:53 -08:00
8021q
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
appletalk
ipv4,appletalk: move SIOCADDRT and SIOCDELRT handling into ->compat_ioctl
2020-05-18 17:35:02 -07:00
atm
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
ax25
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-05-24 13:47:27 -07:00
batman-adv
net: change addr_list_lock back to static key
2020-06-09 12:59:45 -07:00
bluetooth
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2020-06-03 16:27:18 -07:00
bpf
bpf: Fix too large copy from user in bpf_test_init
2020-05-19 17:56:34 +02:00
bpfilter
bpfilter: document build requirements for bpfilter_umh
2020-05-26 00:03:16 +09:00
bridge
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
caif
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
can
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
ceph
The highlights are:
2020-06-08 12:49:18 -07:00
core
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
dcb
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
dccp
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
decnet
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
dns_resolver
docs: networking: convert dns_resolver.txt to ReST
2020-04-28 14:39:46 -07:00
dsa
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
ethernet
net: move devres helpers into a separate source file
2020-05-23 16:56:17 -07:00
ethtool
ethtool: linkinfo: remove an unnecessary NULL check
2020-06-05 13:10:02 -07:00
hsr
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
ieee802154
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
ife
…
ipv4
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
ipv6
mld: fix memory leak in ipv6_mc_destroy_dev()
2020-06-15 13:29:39 -07:00
iucv
net/af_iucv: clean up function prototypes
2020-05-19 12:50:14 -07:00
kcm
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
key
…
l2tp
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
l3mdev
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
lapb
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
llc
af_llc: fix if-statement empty body warning
2020-02-26 20:38:13 -08:00
mac80211
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
mac802154
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
mpls
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
mptcp
mptcp: use list_first_entry_or_null
2020-06-15 13:04:53 -07:00
ncsi
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
netfilter
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
2020-06-15 13:27:13 -07:00
netlabel
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
netlink
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
netrom
net: change addr_list_lock back to static key
2020-06-09 12:59:45 -07:00
nfc
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
nsh
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
openvswitch
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
packet
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
phonet
sysctl: pass kernel pointers to ->proc_handler
2020-04-27 02:07:40 -04:00
psample
net: psample: fix build error when CONFIG_INET is not enabled
2020-05-23 16:36:05 -07:00
qrtr
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
rds
net/rds: NULL pointer de-reference in rds_ib_add_one()
2020-06-15 12:58:59 -07:00
rfkill
rfkill: Fix incorrect check to avoid NULL pointer dereference
2019-12-16 10:15:49 +01:00
rose
net: change addr_list_lock back to static key
2020-06-09 12:59:45 -07:00
rxrpc
rxrpc: Fix race between incoming ACK parser and retransmitter
2020-06-11 18:18:22 -07:00
sched
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
sctp
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
smc
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
strparser
…
sunrpc
NFS Client Updates for Linux 5.8
2020-06-11 12:22:41 -07:00
switchdev
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
tipc
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
tls
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
unix
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
vmw_vsock
vsock/vmci: make vmci_vsock_transport_cb() static
2020-06-05 13:18:26 -07:00
wimax
…
wireless
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
x25
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
xdp
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-06-13 16:27:13 -07:00
xfrm
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
compat.c
switch cmsghdr_from_user_compat_to_kern() to copy_from_user()
2020-06-01 12:05:45 -07:00
devres.c
net: devres: provide devm_register_netdev()
2020-05-23 16:56:17 -07:00
Kconfig
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
Makefile
net: move devres helpers into a separate source file
2020-05-23 16:56:17 -07:00
socket.c
net: remove kernel_setsockopt
2020-05-29 13:10:39 -07:00
sysctl_net.c
…