AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/net/ipv6
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Eric Dumazet 415787d779 ipv6: frags: fix a lockdep false positive 
lockdep does not know that the locks used by IPv4 defrag
and IPv6 reassembly units are of different classes.

It complains because of following chains :

1) sch_direct_xmit()        (lock txq->_xmit_lock)
    dev_hard_start_xmit()
     xmit_one()
      dev_queue_xmit_nit()
       packet_rcv_fanout()
        ip_check_defrag()
         ip_defrag()
          spin_lock()     (lock frag queue spinlock)

2) ip6_input_finish()
    ipv6_frag_rcv()       (lock frag queue spinlock)
     ip6_frag_queue()
      icmpv6_param_prob() (lock txq->_xmit_lock at some point)

We could add lockdep annotations, but we also can make sure IPv6
calls icmpv6_param_prob() only after the release of the frag queue spinlock,
since this naturally makes frag queue spinlock a leaf in lock hierarchy.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-18 23:19:39 -04:00
..
ila net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
netfilter inet: frags: fix ip6frag_low_thresh boundary 2018-04-04 12:04:59 -04:00
addrconf_core.c net: ipv6: Make inet6addr_validator a blocking notifier 2017-10-20 13:15:07 +01:00
addrconf.c net/ipv6: Flip FIB entries to fib6_info 2018-04-17 23:41:18 -04:00
addrlabel.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
af_inet6.c net/ipv6: Make __inet6_bind static 2018-04-17 13:19:22 -04:00
ah6.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-11-15 11:56:19 -08:00
anycast.c net/ipv6: Flip FIB entries to fib6_info 2018-04-17 23:41:18 -04:00
calipso.c net, calipso: convert calipso_doi.refcount from atomic_t to refcount_t 2017-07-04 22:35:16 +01:00
datagram.c ipv6: add a wrapper for ip6_dst_store() with flowi6 checks 2018-04-04 11:31:57 -04:00
esp6_offload.c esp: check the NETIF_F_HW_ESP_TX_CSUM bit before segmenting 2018-02-27 10:46:01 +01:00
esp6.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-17 00:10:42 -05:00
exthdrs_core.c inet: whitespace cleanup 2018-02-28 11:43:28 -05:00
exthdrs_offload.c ipv6: fix exthdrs offload registration in out_rt path 2015-09-02 15:31:00 -07:00
exthdrs.c ipv6: Count interface receive statistics on the ingress netdev 2018-04-17 13:39:51 -04:00
fib6_notifier.c net: Add module reference to FIB notifiers 2017-09-01 20:33:42 -07:00
fib6_rules.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
fou6.c fou: make local function static 2017-05-21 13:42:36 -04:00
icmp.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
inet6_connection_sock.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-01-28 10:33:06 -05:00
inet6_hashtables.c inet: Add a 2nd listener hashtable (port+addr) 2017-12-03 10:18:28 -05:00
ip6_checksum.c udplite: fix partial checksum initialization 2018-02-16 15:57:42 -05:00
ip6_fib.c net/ipv6: Remove unused code and variables for rt6_info 2018-04-17 23:41:18 -04:00
ip6_flowlabel.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ip6_gre.c ip6_gre: better validate user provided tunnel names 2018-04-05 15:16:15 -04:00
ip6_icmp.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ip6_input.c ipv6: Count interface receive statistics on the ingress netdev 2018-04-17 13:39:51 -04:00
ip6_offload.c gso: fix payload length when gso_size is zero 2017-10-08 10:12:15 -07:00
ip6_offload.h udp: Add GRO functions to UDP socket 2016-04-07 16:53:29 -04:00
ip6_output.c net/ipv6: separate handling of FIB entries from dst based routes 2018-04-17 23:41:17 -04:00
ip6_tunnel.c ip6_tunnel: better validate user provided tunnel names 2018-04-05 15:16:15 -04:00
ip6_udp_tunnel.c ip6_udp_tunnel: remove unused IPCB related codes 2016-11-02 15:18:36 -04:00
ip6_vti.c vti6: better validate user provided tunnel names 2018-04-05 15:16:15 -04:00
ip6mr.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ipcomp6.c net: inet: Support UID-based routing in IP protocols. 2016-11-04 14:45:23 -04:00
ipv6_sockglue.c inet: whitespace cleanup 2018-02-28 11:43:28 -05:00
Kconfig ipmr,ipmr6: Define a uniform vif_device 2018-03-01 13:13:23 -05:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mcast_snoop.c net: fix wrong skb_get() usage / crash in IGMP/MLD parsing code 2015-08-13 17:08:39 -07:00
mcast.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
mip6.c ktime: Get rid of ktime_equal() 2016-12-25 17:21:23 +01:00
ndisc.c net/ipv6: Flip FIB entries to fib6_info 2018-04-17 23:41:18 -04:00
netfilter.c netfilter: use skb_to_full_sk in ip6_route_me_harder 2018-02-25 20:51:13 +01:00
output_core.c net: accept UFO datagrams from tuntap and packet 2017-11-24 01:37:35 +09:00
ping.c ipv6: allow to cache dst for a connected sk in ip6_sk_dst_lookup_flow() 2018-04-04 11:31:57 -04:00
proc.c inet: frags: break the 2GB limit for frags storage 2018-03-31 23:25:39 -04:00
protocol.c net: Add sysctl to toggle early demux for tcp and udp 2017-03-24 13:17:07 -07:00
raw.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
reassembly.c ipv6: frags: fix a lockdep false positive 2018-04-18 23:19:39 -04:00
route.c net/ipv6: Remove unused code and variables for rt6_info 2018-04-17 23:41:18 -04:00
seg6_hmac.c ipv6: sr: Use ARRAY_SIZE macro 2017-09-01 18:35:23 -07:00
seg6_iptunnel.c ipv6: sr: fix seg6 encap performances with TSO enabled 2018-03-30 14:14:33 -04:00
seg6_local.c net/ipv6: Pass skb to route lookup 2018-03-04 13:04:22 -05:00
seg6.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
sit.c ipv6: sit: better validate user provided tunnel names 2018-04-05 15:16:15 -04:00
syncookies.c net/ipv4: disable SMC TCP option with SYN Cookies 2018-03-25 20:53:54 -04:00
sysctl_net_ipv6.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
tcp_ipv6.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-03-31 23:33:04 -04:00
tcpv6_offload.c gso: validate gso_type in GSO handlers 2018-01-22 16:01:30 -05:00
tunnel6.c ipv6: fix tunnel error handling 2015-11-03 10:52:13 -05:00
udp_impl.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
udp_offload.c gso: validate gso_type in GSO handlers 2018-01-22 16:01:30 -05:00
udp.c ipv6: udp: set dst cache for a connected sk if current not valid 2018-04-04 11:31:57 -04:00
udplite.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
xfrm6_input.c xfrm: Reinject transport-mode packets through tasklet 2017-12-19 08:23:21 +01:00
xfrm6_mode_beet.c networking: make skb_pull & friends return void pointers 2017-06-16 11:48:39 -04:00
xfrm6_mode_ro.c ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt() 2017-06-02 13:57:27 -04:00
xfrm6_mode_transport.c ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt() 2017-06-02 13:57:27 -04:00
xfrm6_mode_tunnel.c xfrm: Verify MAC header exists before overwriting eth_hdr(skb)->h_proto 2018-03-07 10:54:29 +01:00
xfrm6_output.c net: xfrm: use skb_gso_validate_network_len() to check gso sizes 2018-03-04 17:49:17 -05:00
xfrm6_policy.c net/ipv6: Remove unused code and variables for rt6_info 2018-04-17 23:41:18 -04:00
xfrm6_protocol.c xfrm: input: constify xfrm_input_afinfo 2017-02-09 10:22:17 +01:00
xfrm6_state.c inet: whitespace cleanup 2018-02-28 11:43:28 -05:00
xfrm6_tunnel.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00