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David Ahern 29ce06b6b6 ipv4: Detect rollover in specific fib table dump 
[ Upstream commit 9827c0634e ]

Sven-Haegar reported looping on fib dumps when 255.255.255.255 route has
been added to a table. The looping is caused by the key rolling over from
FFFFFFFF to 0. When dumping a specific table only, we need a means to detect
when the table dump is done. The key and count saved to cb args are both 0
only at the start of the table dump. If key is 0 and count > 0, then we are
in the rollover case. Detect and return to avoid looping.

This only affects dumps of a specific table; for dumps of all tables
(the case prior to the change in the Fixes tag) inet_dump_fib moved
the entry counter to the next table and reset the cb args used by
fib_table_dump and fn_trie_dump_leaf, so the rollover ffffffff back
to 0 did not cause looping with the dumps.

Fixes: effe679266 ("net: Enable kernel side filtering of route dumps")
Reported-by: Sven-Haegar Koch <haegar@sdinet.de>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-29 16:45:24 +01:00
..
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: enforce CAP_NET_RAW for raw sockets 2019-09-24 16:37:18 +02:00
batman-adv batman-adv: Fix DAT candidate selection on little endian systems 2020-01-23 08:22:49 +01:00
bluetooth Bluetooth: Fix memory leak in hci_connect_le_scan 2020-01-09 10:20:04 +01:00
bpf bpf/flow_dissector: support flags in BPF_PROG_TEST_RUN 2019-07-25 18:00:41 -07:00
bpfilter Kbuild updates for v5.3 2019-07-12 16:03:16 -07:00
bridge net: add bool confirm_neigh parameter for dst_ops.update_pmtu 2020-01-04 19:18:58 +01:00
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: use ceph_kvmalloc() for osdmap arrays 2019-09-16 12:06:25 +02:00
core net: Fix packet reordering caused by GRO and listified RX cooperation 2020-01-29 16:45:22 +01:00
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 Revert "Merge tag 'keys-acl-20190703' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs" 2019-07-10 18:43:43 -07:00
dsa net: dsa: tag_gswip: fix typo in tagger name 2020-01-23 08:22:52 +01:00
ethernet net: add annotations on hh->hh_len lockless accesses 2020-01-09 10:20:06 +01:00
hsr hsr: fix slab-out-of-bounds Read in hsr_debugfs_rename() 2020-01-17 19:48:32 +01:00
ieee802154 net: core: add generic lockdep keys 2019-10-24 14:53:48 -07:00
ife net: Fix Kconfig indentation 2019-09-26 08:56:17 +02:00
ipv4 ipv4: Detect rollover in specific fib table dump 2020-01-29 16:45:24 +01:00
ipv6 net, ip6_tunnel: fix namespaces move 2020-01-29 16:45:20 +01:00
iucv net/af_iucv: mark expected switch fall-throughs 2019-07-29 10:26:14 -07:00
kcm kcm: disable preemption in kcm_parse_func_strparser() 2019-09-27 10:27:14 +02:00
key
l2tp net: ipv6: add net argument to ip6_dst_lookup_flow 2019-12-18 16:08:40 +01:00
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: fix TID field in monitor mode transmit 2020-01-12 12:21:28 +01:00
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_tables: fix flowtable list del corruption 2020-01-23 08:22:48 +01:00
netlabel netlabel: remove redundant assignment to pointer iter 2019-09-01 11:45:02 -07:00
netlink
netrom net: core: add generic lockdep keys 2019-10-24 14:53:48 -07:00
nfc net: nfc: nci: fix a possible sleep-in-atomic-context bug in nci_uart_tty_receive() 2019-12-31 16:41:23 +01:00
nsh
openvswitch net: openvswitch: don't unlock mutex when changing the user_features fails 2020-01-26 10:01:05 +01:00
packet packet: fix data-race in fanout_flow_is_huge() 2020-01-26 10:01:06 +01:00
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: Stop rx_worker before freeing node 2019-09-21 18:45:46 -07:00
rds rds: ib: update WR sizes when bringing up connection 2019-11-16 12:59:08 -08:00
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 missing security check on incoming calls 2020-01-17 19:49:05 +01:00
sched net_sched: use validated TCA_KIND attribute in tc_new_tfilter() 2020-01-29 16:45:21 +01:00
sctp sctp: free cmd->obj.chunk for the unprocessed SCTP_CMD_REPLY 2020-01-12 12:21:48 +01:00
smc net/smc: add fallback check to connect() 2020-01-04 19:18:37 +01:00
strparser
sunrpc SUNRPC: Fix another issue with MIC buffer space 2020-01-26 10:01:07 +01:00
switchdev
tipc tipc: fix wrong timeout input for tipc_wait_for_cond() 2020-01-26 10:01:00 +01:00
tls bpf: Sockmap/tls, fix pop data with SK_DROP return code 2020-01-23 08:22:46 +01:00
unix af_unix: add compat_ioctl support 2020-01-17 19:48:52 +01:00
vmw_vsock vsock/virtio: fix sock refcnt holding during the shutdown 2019-11-08 12:17:50 -08:00
wimax wimax: no need to check return value of debugfs_create functions 2019-08-10 15:25:47 -07:00
wireless cfg80211: check for set_wiphy_params 2020-01-23 08:22:55 +01:00
x25 net: silence KCSAN warnings around sk_add_backlog() calls 2019-10-09 21:42:59 -07:00
xdp xsk: Add rcu_read_lock around the XSK wakeup 2020-01-12 12:21:41 +01:00
xfrm xfrm: release device reference for invalid state 2019-11-12 08:24:38 +01:00
compat.c
Kconfig devlink: Add packet trap infrastructure 2019-08-17 12:40:08 -07:00
Makefile
socket.c compat_ioctl: handle SIOCOUTQNSD 2020-01-17 19:48:52 +01:00
sysctl_net.c