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Paul Moore 96cce13df9 cipso,calipso: resolve a number of problems with the DOI refcounts 
commit ad5d07f4a9cd671233ae20983848874731102c08 upstream.

The current CIPSO and CALIPSO refcounting scheme for the DOI
definitions is a bit flawed in that we:

1. Don't correctly match gets/puts in netlbl_cipsov4_list().
2. Decrement the refcount on each attempt to remove the DOI from the
   DOI list, only removing it from the list once the refcount drops
   to zero.

This patch fixes these problems by adding the missing "puts" to
netlbl_cipsov4_list() and introduces a more conventional, i.e.
not-buggy, refcounting mechanism to the DOI definitions.  Upon the
addition of a DOI to the DOI list, it is initialized with a refcount
of one, removing a DOI from the list removes it from the list and
drops the refcount by one; "gets" and "puts" behave as expected with
respect to refcounts, increasing and decreasing the DOI's refcount by
one.

Fixes: b1edeb102397 ("netlabel: Replace protocol/NetLabel linking with refrerence counts")
Fixes: d7cce01504a0 ("netlabel: Add support for removing a CALIPSO DOI.")
Reported-by: syzbot+9ec037722d2603a9f52e@syzkaller.appspotmail.com
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2021-04-12 12:52:59 +08:00
..
bpfilter Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
netfilter netfilter: rpfilter: mask ecn bits before fib lookup 2021-04-12 12:51:38 +08:00
Kconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Makefile Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
af_inet.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ah4.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
arp.c Exempt multicast addresses from five-second neighbor lifetime 2021-03-16 16:41:04 +08:00
cipso_ipv4.c cipso,calipso: resolve a number of problems with the DOI refcounts 2021-04-12 12:52:59 +08:00
datagram.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
devinet.c devinet: fix memleak in inetdev_init() 2021-03-16 16:28:49 +08:00
esp4.c esp: avoid unneeded kmap_atomic call 2021-04-12 12:51:30 +08:00
esp4_offload.c xfrm: remove the xfrm_state_put call becofe going to out_reset 2021-03-16 16:28:39 +08:00
fib_frontend.c ipv4: Ignore ECN bits for fib lookups in fib_compute_spec_dst() 2021-04-12 12:51:08 +08:00
fib_lookup.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
fib_notifier.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
fib_rules.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
fib_semantics.c net: Fix the arp error in some cases 2021-03-16 16:30:46 +08:00
fib_trie.c ipv4: Silence suspicious RCU usage warning 2021-03-16 16:35:46 +08:00
fou.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
gre_demux.c erspan: fix version 1 check in gre_parse_header() 2021-04-12 12:51:09 +08:00
gre_offload.c net: gre: recompute gre csum for sctp over gre tunnels 2021-03-16 16:33:10 +08:00
icmp.c net: icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending 2021-04-12 12:52:42 +08:00
igmp.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
inet_connection_sock.c tcp: fix TCP_USER_TIMEOUT with zero window 2021-04-12 12:51:40 +08:00
inet_diag.c inet_diag: Fix error path to cancel the meseage in inet_req_diag_fill() 2021-03-16 16:41:04 +08:00
inet_fragment.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
inet_hashtables.c net: initialize fastreuse on inet_inherit_port 2021-03-16 16:33:50 +08:00
inet_timewait_sock.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
inetpeer.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip_forward.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip_fragment.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip_gre.c ip_gre: set dev->hard_header_len and dev->needed_headroom properly 2021-03-16 16:39:16 +08:00
ip_input.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip_options.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip_output.c net: ip: always refragment ip defragmented packets 2021-04-12 12:51:16 +08:00
ip_sockglue.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip_tunnel.c net: ip_tunnel: fix mtu calculation 2021-04-12 12:51:58 +08:00
ip_tunnel_core.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip_vti.c ip_vti: receive ipip packet by calling ip_tunnel_rcv 2021-03-16 16:28:39 +08:00
ipcomp.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ipconfig.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ipip.c net: ipip: fix wrong address family in init error path 2021-03-16 16:28:23 +08:00
ipmr.c net: don't return invalid table id error when we fall back to PF_UNSPEC 2021-03-16 16:28:22 +08:00
ipmr_base.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
metrics.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
netfilter.c netfilter: use actual socket sk rather than skb sk when routing harder 2021-03-16 16:40:35 +08:00
netlink.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
nexthop.c nexthop: Do not flush blackhole nexthops when loopback goes down 2021-04-12 12:52:58 +08:00
ping.c ipv4: fill fl4_icmp_{type,code} in ping_v4_sendmsg 2021-03-16 16:31:42 +08:00
proc.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
protocol.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raw.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raw_diag.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
route.c ipv4: Fix tos mask in inet_rtm_getroute() 2021-03-16 16:41:54 +08:00
syncookies.c net: Update window_clamp if SOCK_RCVBUF is set 2021-03-16 16:40:58 +08:00
sysctl_net_ipv4.c net: change TCP_TIMEWAIT_LEN on runtime 2021-03-16 16:43:58 +08:00
tcp.c tcp: add sanity tests to TCP_QUEUE_SEQ 2021-04-12 12:52:57 +08:00
tcp_bbr.c tcp: only postpone PROBE_RTT if RTT is < current min_rtt estimate 2021-03-16 16:41:08 +08:00
tcp_bic.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_bpf.c bpf, sockmap: Ensure SO_RCVBUF memory is observed on ingress redirect 2021-03-16 16:41:21 +08:00
tcp_cdg.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_cong.c tcp: Set INET_ECN_xmit configuration in tcp_reinit_congestion_control 2021-03-16 16:41:52 +08:00
tcp_cubic.c tcp_cubic: fix spurious HYSTART_DELAY exit upon drop in min RTT 2021-03-16 16:30:49 +08:00
tcp_dctcp.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_dctcp.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_diag.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_fastopen.c tcp: correct read of TFO keys on big endian systems 2021-03-16 16:33:49 +08:00
tcp_highspeed.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_htcp.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_hybla.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_illinois.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_input.c tcp: make TCP_USER_TIMEOUT accurate for zero window probes 2021-04-12 12:51:49 +08:00
tcp_ipv4.c tcp: do not mess with cloned skbs in tcp_add_backlog() 2021-04-12 12:51:40 +08:00
tcp_lp.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_metrics.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_minisocks.c net: change TCP_TIMEWAIT_LEN on runtime 2021-03-16 16:43:58 +08:00
tcp_nv.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_offload.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_output.c tcp: make TCP_USER_TIMEOUT accurate for zero window probes 2021-04-12 12:51:49 +08:00
tcp_rate.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_recovery.c tcp: fix TLP timer not set when CA_STATE changes from DISORDER to OPEN 2021-04-12 12:51:48 +08:00
tcp_scalable.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_timer.c tcp: make TCP_USER_TIMEOUT accurate for zero window probes 2021-04-12 12:51:49 +08:00
tcp_ulp.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_vegas.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_vegas.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_veno.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_westwood.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_yeah.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tunnel4.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
udp.c udp: mask TOS bits in udp_v4_early_demux() 2021-04-12 12:51:39 +08:00
udp_diag.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
udp_impl.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
udp_offload.c net: Fix gro aggregation for udp encaps with zero csum 2021-04-12 12:52:56 +08:00
udp_tunnel.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
udplite.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xfrm4_input.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xfrm4_output.c xfrm: Always set XFRM_TRANSFORMED in xfrm{4,6}_output_finish 2021-03-16 16:26:53 +08:00
xfrm4_policy.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xfrm4_protocol.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xfrm4_state.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xfrm4_tunnel.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00