linux/net
Ido Schimmel b20b8aec6f devlink: Fix netdev notifier chain corruption
Cited commit changed devlink to register its netdev notifier block on
the global netdev notifier chain instead of on the per network namespace
one.

However, when changing the network namespace of the devlink instance,
devlink still tries to unregister its notifier block from the chain of
the old namespace and register it on the chain of the new namespace.
This results in corruption of the notifier chains, as the same notifier
block is registered on two different chains: The global one and the per
network namespace one. In turn, this causes other problems such as the
inability to dismantle namespaces due to netdev reference count issues.

Fix by preventing devlink from moving its notifier block between
namespaces.

Reproducer:

 # echo "10 1" > /sys/bus/netdevsim/new_device
 # ip netns add test123
 # devlink dev reload netdevsim/netdevsim10 netns test123
 # ip netns del test123
 [   71.935619] unregister_netdevice: waiting for lo to become free. Usage count = 2
 [   71.938348] leaked reference.

Fixes: 565b4824c3 ("devlink: change port event netdev notifier from per-net to global")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20230215073139.1360108-1-idosch@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-16 11:53:47 +01:00
..
6lowpan
9p xen: branch for v6.2-rc4 2023-01-12 17:02:20 -06:00
802 treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
8021q net: Remove the obsolte u64_stats_fetch_*_irq() users (net). 2022-10-28 20:13:54 -07:00
appletalk
atm driver core: make struct class.dev_uevent() take a const * 2022-11-24 17:12:15 +01:00
ax25 ax25: af_ax25: Remove unnecessary (void*) conversions 2022-11-16 13:31:03 +00:00
batman-adv Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
bluetooth Bluetooth: Fix possible deadlock in rfcomm_sk_state_change 2023-01-17 15:59:02 -08:00
bpf New Feature: 2022-12-17 14:06:53 -06:00
bpfilter
bridge netfilter: br_netfilter: disable sabotage_in hook after first suppression 2023-01-31 13:59:36 +01:00
caif net: Remove WARN_ON_ONCE(sk->sk_forward_alloc) from sk_stream_kill_queues(). 2023-02-10 19:53:42 -08:00
can can: j1939: do not wait 250 ms if the same addr was already claimed 2023-02-07 15:00:22 +01:00
ceph Treewide: Stop corrupting socket's task_frag 2022-12-19 17:28:49 -08:00
core devlink: Fix netdev notifier chain corruption 2023-02-16 11:53:47 +01:00
dcb net: dcb: move getapptrust to separate function 2022-11-15 15:27:43 +01:00
dccp dccp/tcp: Avoid negative sk_forward_alloc by ipv6_pinfo.pktoptions. 2023-02-10 19:53:42 -08:00
dns_resolver cred: Do not default to init_cred in prepare_kernel_cred() 2022-11-01 10:04:52 -07:00
dsa Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-12-13 09:49:29 +01:00
ethernet net: ethernet: use sysfs_emit() to instead of scnprintf() 2022-12-07 20:02:44 -08:00
ethtool Revert "Merge branch 'ethtool-mac-merge'" 2023-01-24 17:44:14 +01:00
hsr hsr: Use a single struct for self_node. 2022-12-01 20:26:22 -08:00
ieee802154 Merge tag 'ieee802154-for-net-next-2022-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan-next 2022-12-07 17:33:26 -08:00
ife
ipv4 txhash: fix sk->sk_txrehash default 2023-02-08 09:07:11 +00:00
ipv6 dccp/tcp: Avoid negative sk_forward_alloc by ipv6_pinfo.pktoptions. 2023-02-10 19:53:42 -08:00
iucv
kcm kcm: close race conditions on sk_receive_queue 2022-11-15 12:42:26 +01:00
key af_key: Fix heap information leak 2023-02-13 09:30:14 +00:00
l2tp l2tp: prevent lockdep issue in l2tp_tunnel_register() 2023-01-18 14:44:54 +00:00
l3mdev
lapb
llc
mac80211 Revert "wifi: mac80211: fix memory leak in ieee80211_if_add()" 2023-01-16 17:28:52 +02:00
mac802154 mac802154: Fix possible double free upon parsing error 2022-12-19 11:38:12 +01:00
mctp net: mctp: purge receive queues on sk destruction 2023-01-28 00:26:09 -08:00
mpls net: mpls: fix stale pointer if allocation fails during device rename 2023-02-15 10:26:37 +00:00
mptcp mptcp: be careful on subflow status propagation on errors 2023-02-08 09:39:34 +00:00
ncsi net/ncsi: Silence runtime memcpy() false positive warning 2022-12-06 17:29:14 -08:00
netfilter Revert "netfilter: conntrack: fix bug in for_each_sctp_chunk" 2023-01-31 14:02:48 +01:00
netlabel
netlink netlink: annotate data races around sk_state 2023-01-23 21:35:53 -08:00
netrom netrom: Fix use-after-free caused by accept on already connected socket 2023-01-30 07:30:47 +00:00
nfc net: nfc: Fix use-after-free in local_cleanup() 2023-01-13 20:53:44 -08:00
nsh
openvswitch net: openvswitch: fix possible memory leak in ovs_meter_cmd_set() 2023-02-13 09:38:25 +00:00
packet Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
phonet
psample
qrtr net: qrtr: free memory on error path in radix_tree_insert() 2023-01-28 00:21:32 -08:00
rds rds: rds_rm_zerocopy_callback() use list_first_entry() 2023-02-09 10:37:26 +01:00
rfkill driver core: make struct class.dev_uevent() take a const * 2022-11-24 17:12:15 +01:00
rose net/rose: Fix to not accept on connected socket 2023-01-28 00:19:57 -08:00
rxrpc rxrpc: Fix wrong error return in rxrpc_connect_call() 2023-01-12 21:51:55 -08:00
sched net/sched: tcindex: search key must be 16 bits 2023-02-15 10:23:54 +00:00
sctp sctp: sctp_sock_filter(): avoid list_entry() on possibly empty list 2023-02-10 19:28:29 -08:00
smc use less confusing names for iov_iter direction initializers 2022-11-25 13:01:55 -05:00
strparser
sunrpc nfsd-6.2 fixes: 2023-01-10 15:03:06 -06:00
switchdev
tipc tipc: fix kernel warning when sending SYN message 2023-02-14 20:46:24 -08:00
tls net/tls: tls_is_tx_ready() checked list_entry 2023-01-30 21:06:08 -08:00
unix unix: Fix race in SOCK_SEQPACKET's unix_dgram_sendmsg() 2022-12-15 11:35:18 +01:00
vmw_vsock Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
wireless Driver Core changes for 6.2-rc1 2022-12-16 03:54:54 -08:00
x25 net/x25: Fix to not accept on connected socket 2023-01-25 09:51:04 +00:00
xdp bpf: Expand map key argument of bpf_redirect_map to u64 2022-11-15 09:00:27 -08:00
xfrm xfrm: fix bug with DSCP copy to v6 from v4 tunnel 2023-01-30 11:31:58 +01:00
compat.c use less confusing names for iov_iter direction initializers 2022-11-25 13:01:55 -05:00
devres.c
Kconfig
Kconfig.debug
Makefile
socket.c net: use a bounce buffer for copying skb->mark 2023-02-14 20:31:13 -08:00
sysctl_net.c