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b7ee18725f
linux/net
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Zihan Xi b7ee18725f ipmr: account multicast table and route memory 
A netadmin in a user+net namespace can create many IPv4 and IPv6
multicast routing tables with MRT_TABLE and MRT6_TABLE. Each unseen
id allocates an mr_table via the shared mr_table_alloc(), links it
into the per-net list, and leaves it until netns teardown. Those
objects were not charged to memcg, so the host unreclaimable slab
grows with the table count.

Account mr_table allocations with GFP_KERNEL_ACCOUNT and mark the
IPv4/IPv6 MFC caches SLAB_ACCOUNT. This matches the established
handling of IP addresses, routes and alternate interface names.

Unresolved MFC entries are still allocated from softIRQ with
GFP_ATOMIC and are not charged. They expire after 10 seconds and are
bounded by the socket receive queue; see commit 0079ad8e8d
("ipmr: remove hard code cache_resolve_queue_len limit").

Fixes: f0ad0860d0 ("ipv4: ipmr: support multiple tables")
Fixes: d1db275dd3 ("ipv6: ip6mr: support multiple tables")
Cc: stable@vger.kernel.org
Reported-by: Vega <vega@nebusec.ai>
Signed-off-by: Zihan Xi <zihanx@nebusec.ai>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/050b58f7fc6b45da0fb12768ebb62d18fa46133d.1788784801.git.zihanx@nebusec.ai
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-09-10 08:48:44 -07:00
..
6lowpan net: 6lowpan: fix mismatched comments 2026-09-02 09:03:06 +02:00
9p 9p: Add missing read barrier in virtio zero-copy path 2026-06-21 05:22:57 +00:00
802 appletalk: move the protocol out of tree 2026-06-16 14:37:06 -07:00
8021q vlan: fix skb_under_panic and races when toggling HW VLAN offload 2026-08-20 13:05:43 -07:00
atm Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-08-06 11:53:47 -07:00
batman-adv Here are a few batman-adv bugfixes: 2026-08-22 12:42:58 -07:00
bluetooth Bluetooth: hci_sysfs: Fix NULL pointer dereference in device_del() 2026-09-08 17:12:45 -04:00
bpf bpf: Fix partial copy of non-linear test_run output 2026-06-21 17:55:06 -07:00
bridge net: bridge: use option bits for CFM/MRP frame handlers 2026-09-08 17:48:49 -07:00
can can: isotp: check register_netdevice_notifier() error in module init 2026-07-29 11:26:41 +02:00
ceph A wide variety of mostly CephFS fixes and cleanups, split between 2026-08-28 11:51:05 -07:00
core net: reject oversized tx_queue_len at netlink parse time 2026-09-04 16:30:49 -07:00
dcb
devlink devlink: add generic device max_sfs parameter 2026-08-11 18:06:30 -07:00
dns_resolver keys, dns: Drop unused NUL terminator from upayload->data 2026-08-10 16:20:42 -07:00
dsa net: dsa: tag_brcm: legacy FCS: request needed tailroom 2026-09-09 13:31:08 -07:00
ethernet
ethtool ethtool: tsconfig: reject zero-valued tx_type and rx_filter bitsets 2026-08-13 17:44:54 -07:00
handshake handshake: Require admin permission for DONE command 2026-06-12 15:45:44 -07:00
hsr net: hsr: enable promiscuous mode on interlink port with fwd offload 2026-09-10 08:45:00 -07:00
ieee802154 ieee802154: 6lowpan: fix NULL dereference in lowpan_newlink 2026-09-02 09:54:27 +02:00
ife net/sched: act_ife: Only operate on Ethernet frames 2026-08-24 11:59:59 -07:00
ipv4 ipmr: account multicast table and route memory 2026-09-10 08:48:44 -07:00
ipv6 ipmr: account multicast table and route memory 2026-09-10 08:48:44 -07:00
iucv net/iucv: fix the recvmsg window update 2026-08-31 15:51:22 -07:00
kcm net: kcm: Hold RCU read lock while running BPF parser 2026-08-17 13:43:58 -07:00
key ipsec-2026-06-22 2026-06-23 16:22:24 -07:00
l2tp net: l2tp: do not propagate multicast notification errors 2026-08-24 11:43:28 -07:00
l3mdev
lapb
llc llc: fix SAP refcount leak when creating incoming sockets 2026-07-17 13:17:46 +02:00
mac80211 Networking changes for 7.3. 2026-08-20 08:16:04 -07:00
mac802154 mac802154: fix use-after-free of sdata via queued RX frames 2026-09-03 11:00:54 +02:00
mctp net: mctp: hold a reference to the route device in mctp_route_lookup() 2026-08-20 12:27:40 -07:00
mpls Summary 2026-08-20 08:46:41 -07:00
mptcp mptcp: avoid pruning for OoW data 2026-09-09 13:32:56 -07:00
ncsi net/ncsi: fix heap OOB read in NCSI_CMD_SEND_CMD payload length 2026-08-05 17:24:57 -07:00
netfilter netfilter: report NLM_F_DUMP_FILTERED when all is filtered out 2026-09-07 18:48:56 +02:00
netlabel Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-06-11 14:33:35 -07:00
netlink genetlink: pin family module during policy dump 2026-09-03 17:21:35 -07:00
nfc nfc: nci: free destination parameters when closing a connection 2026-08-11 18:10:04 +02:00
nsh
openvswitch net: openvswitch: fix use-after-free of the flow table mask array 2026-09-08 17:24:10 -07:00
packet af_packet: Don't cast tpacket_hdr.tp_len to int in tpacket_parse_header(). 2026-09-01 10:42:56 +02:00
phonet phonet: pep: convert getsockopt to sockopt_t 2026-08-03 16:55:23 -07:00
psample net: psample: fix info leak in PSAMPLE_ATTR_DATA 2026-06-17 16:35:50 -07:00
psp psp: use unrcu_pointer() for the cmpxchg() on netdev psp_dev 2026-08-17 11:06:14 -07:00
qrtr net: qrtr: Send HELLO message on endpoint register 2026-09-02 12:14:32 +01:00
rds net/rds: fix tcp stream corruption with large pages 2026-09-10 08:19:17 -07:00
rfkill Replace <linux/mod_devicetable.h> by more specific <linux/device-id/*.h> (c files) 2026-07-03 07:38:17 +02:00
rxrpc rxrpc: fix io_thread race in rxrpc_wake_up_io_thread() 2026-07-21 11:52:29 +02:00
sched net/sched: cls_api: Don't replay RTM_GETCHAIN in tc_ctl_chain(). 2026-09-10 12:06:23 +02:00
sctp sctp: validate chunk length in the inqueue parser 2026-08-30 14:17:53 -07:00
shaper net: shaper: add a note that we expect cap dumps to be tiny 2026-06-11 12:55:23 +02:00
smc Including fixes from Bluetooth, IPSec and Netfilter. 2026-08-27 13:53:43 -07:00
strparser
sunrpc NFS client updates for Linux 7.3 2026-08-26 15:09:21 -07:00
switchdev
tipc tipc: Dont send random pad bytes in RESET/ACTIVATE messages 2026-08-31 20:02:36 -07:00
tls tls: device: fix out-of-bounds write in tls_append_frag() 2026-08-25 10:04:02 +02:00
unix af_unix: Return immediately when manage_oob() returns NULL for 0-length buffer. 2026-09-07 16:58:42 -07:00
vmw_vsock vsock/vmci: validate packet source for connected sockets 2026-08-31 16:50:54 -07:00
wireless Quite a bunch more work, of note: 2026-08-06 12:39:11 -07:00
x25 net/x25: fix use-after-free of the socket by its timers 2026-07-30 18:46:45 -07:00
xdp xsk: honor XDP_TX_METADATA in zero-copy path 2026-08-24 11:12:00 -07:00
xfrm ipsec-2026-08-18 2026-08-20 11:38:14 -07:00
compat.c net: af_unix: useful handling of LSM denials on SCM_RIGHTS 2026-08-17 18:14:52 -07:00
devres.c
Kconfig appletalk: move the protocol out of tree 2026-06-16 14:37:06 -07:00
Kconfig.debug
Makefile appletalk: move the protocol out of tree 2026-06-16 14:37:06 -07:00
socket.c Major changes: 2026-08-20 07:36:20 -07:00
sysctl_net.c net: enforce net sysctl registration 2026-08-13 13:12:21 +02:00