Qian Cai 0315cfc6f8 ipv4: fix a RCU-list lock in fib_triestat_seq_show ... [ Upstream commit fbe4e0c1b2 ] fib_triestat_seq_show() calls hlist_for_each_entry_rcu(tb, head, tb_hlist) without rcu_read_lock() will trigger a warning, net/ipv4/fib_trie.c:2579 RCU-list traversed in non-reader section!! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by proc01/115277: #0: c0000014507acf00 (&p->lock){+.+.}-{3:3}, at: seq_read+0x58/0x670 Call Trace: dump_stack+0xf4/0x164 (unreliable) lockdep_rcu_suspicious+0x140/0x164 fib_triestat_seq_show+0x750/0x880 seq_read+0x1a0/0x670 proc_reg_read+0x10c/0x1b0 __vfs_read+0x3c/0x70 vfs_read+0xac/0x170 ksys_read+0x7c/0x140 system_call+0x5c/0x68 Fix it by adding a pair of rcu_read_lock/unlock() and use cond_resched_rcu() to avoid the situation where walking of a large number of items may prevent scheduling for a long time. Signed-off-by: Qian Cai <cai@lca.pw> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-06-17 16:40:24 +02:00
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6lowpan
9p	9p pull request for inclusion in 5.4	2019-09-27 15:10:34 -07:00
802
8021q	vlan: vlan_changelink() should propagate errors	2020-01-12 12:21:50 +01:00
appletalk	appletalk: enforce CAP_NET_RAW for raw sockets	2019-09-24 16:37:18 +02:00
atm	net: atm: Reduce the severity of logging in unlink_clip_vcc	2019-11-18 17:08:20 -08:00
ax25	ax25: fix setsockopt(SO_BINDTODEVICE)	2020-06-03 08:20:39 +02:00
batman-adv	batman-adv: Fix refcnt leak in batadv_v_ogm_process	2020-05-14 07:58:28 +02:00
bluetooth	Bluetooth: RFCOMM: fix ODEBUG bug in rfcomm_dev_ioctl	2020-04-13 10:48:13 +02:00
bpf
bpfilter	net/bpfilter: remove superfluous testing message	2020-04-21 09:04:53 +02:00
bridge	bridge: Avoid infinite loop when suppressing NS messages with invalid options	2020-06-17 16:40:20 +02:00
caif	net: use skb_queue_empty_lockless() in poll() handlers	2019-10-28 13:33:41 -07:00
can	can: j1939: j1939_sk_bind(): take priv after lock is held	2019-12-31 16:45:56 +01:00
ceph	libceph: ignore pool overlay and cache logic on redirects	2020-06-03 08:21:25 +02:00
core	__netif_receive_skb_core: pass skb by reference	2020-06-03 08:20:47 +02:00
dcb
dccp	net: ipv6: add net argument to ip6_dst_lookup_flow	2019-12-18 16:08:40 +01:00
decnet	net: add bool confirm_neigh parameter for dst_ops.update_pmtu	2020-01-04 19:18:58 +01:00
dns_resolver	KEYS: Don't write out to userspace while holding key semaphore	2020-04-23 10:36:45 +02:00
dsa	net: dsa: declare lockless TX feature for slave ports	2020-06-03 08:21:38 +02:00
ethernet	net: add annotations on hh->hh_len lockless accesses	2020-01-09 10:20:06 +01:00
hsr	hsr: check protocol version in hsr_newlink()	2020-04-21 09:04:44 +02:00
ieee802154	nl802154: add missing attribute validation for dev_type	2020-03-18 07:17:44 +01:00
ife	net: Fix Kconfig indentation	2019-09-26 08:56:17 +02:00
ipv4	ipv4: fix a RCU-list lock in fib_triestat_seq_show	2020-06-17 16:40:24 +02:00
ipv6	ipv6: fix IPV6_ADDRFORM operation logic	2020-06-17 16:40:19 +02:00
iucv
kcm	kcm: disable preemption in kcm_parse_func_strparser()	2019-09-27 10:27:14 +02:00
key
l2tp	l2tp: do not use inet_hash()/inet_unhash()	2020-06-10 20:24:54 +02:00
l3mdev
lapb
llc	llc2: Fix return statement of llc_stat_ev_rx_null_dsap_xid_c (and _test_c)	2020-01-12 12:21:45 +01:00
mac80211	mac80211: mesh: fix discovery timer re-arming issue / crash	2020-06-03 08:21:30 +02:00
mac802154
mpls	net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup	2019-12-18 16:08:42 +01:00
ncsi	net/ncsi: Disable global multicast filter	2019-09-19 18:04:40 -07:00
netfilter	netfilter: nf_conntrack_pptp: fix compilation warning with W=1 build	2020-06-03 08:21:39 +02:00
netlabel	netlabel: cope with NULL catmap	2020-05-20 08:20:08 +02:00
netlink	netlink: Use netlink header as base to calculate bad attribute offset	2020-03-18 07:17:40 +01:00
netrom	net: netrom: Fix potential nr_neigh refcnt leak in nr_add_node	2020-04-29 16:33:08 +02:00
nfc	nfc: add missing attribute validation for vendor subcommand	2020-03-18 07:17:46 +01:00
nsh
openvswitch	net: openvswitch: ovs_ct_exit to be done under ovs_lock	2020-04-29 16:33:08 +02:00
packet	net/packet: tpacket_rcv: avoid a producer race condition	2020-04-01 11:01:35 +02:00
phonet	net: use skb_queue_empty_lockless() in poll() handlers	2019-10-28 13:33:41 -07:00
psample	net: psample: fix skb_over_panic	2019-12-04 22:30:54 +01:00
qrtr	net: qrtr: Fix passing invalid reference to qrtr_local_enqueue()	2020-06-03 08:21:00 +02:00
rds	net/rds: Use ERR_PTR for rds_message_alloc_sgs()	2020-05-20 08:20:27 +02:00
rfkill	rfkill: Fix incorrect check to avoid NULL pointer dereference	2020-01-12 12:21:33 +01:00
rose	net: core: add generic lockdep keys	2019-10-24 14:53:48 -07:00
rxrpc	rxrpc: Fix ack discard	2020-05-27 17:46:51 +02:00
sched	net_sched: fix tcm_parent in tc filter dump	2020-05-20 08:20:07 +02:00
sctp	sctp: Start shutdown on association restart if in SHUTDOWN-SENT state and socket is closed	2020-06-03 08:21:02 +02:00
smc	net/smc: cancel event worker during device removal	2020-03-18 07:17:59 +01:00
strparser
sunrpc	SUNRPC: Revert 241b1f419f ("SUNRPC: Remove xdr_buf_trim()")	2020-05-20 08:20:39 +02:00
switchdev
tipc	tipc: block BH before using dst_cache	2020-06-03 08:21:03 +02:00
tls	net/tls: free record only on encryption error	2020-06-03 08:21:06 +02:00
unix	af_unix: add compat_ioctl support	2020-01-17 19:48:52 +01:00
vmw_vsock	vsock: fix timeout in vsock_accept()	2020-06-10 20:24:55 +02:00
wimax
wireless	cfg80211: fix debugfs rename crash	2020-06-03 08:21:29 +02:00
x25	net/x25: Fix x25_neigh refcnt leak when receiving frame	2020-04-29 16:33:09 +02:00
xdp	xsk: Add overflow check for u64 division, stored into u32	2020-06-03 08:21:36 +02:00
xfrm	xfrm: fix a NULL-ptr deref in xfrm_local_error	2020-06-03 08:21:33 +02:00
compat.c
Kconfig	net: Fix CONFIG_NET_CLS_ACT=n and CONFIG_NFT_FWD_NETDEV={y, m} build	2020-04-01 11:02:18 +02:00
Makefile
socket.c	compat_ioctl: handle SIOCOUTQNSD	2020-01-17 19:48:52 +01:00
sysctl_net.c