Sean Tranchetti 51b44d8f23 net: ipv6: fib: flush exceptions when purging route ... [ Upstream commit d8f5c29653c3f6995e8979be5623d263e92f6b86 ] Route removal is handled by two code paths. The main removal path is via fib6_del_route() which will handle purging any PMTU exceptions from the cache, removing all per-cpu copies of the DST entry used by the route, and releasing the fib6_info struct. The second removal location is during fib6_add_rt2node() during a route replacement operation. This path also calls fib6_purge_rt() to handle cleaning up the per-cpu copies of the DST entries and releasing the fib6_info associated with the older route, but it does not flush any PMTU exceptions that the older route had. Since the older route is removed from the tree during the replacement, we lose any way of accessing it again. As these lingering DSTs and the fib6_info struct are holding references to the underlying netdevice struct as well, unregistering that device from the kernel can never complete. Fixes: 2b760fcf5cfb3 ("ipv6: hook up exception table to store dst cache") Signed-off-by: Sean Tranchetti <stranche@codeaurora.org> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/1609892546-11389-1-git-send-email-stranche@quicinc.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-04-12 12:51:15 +08:00
..
ila	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: x_tables: Update remaining dereference to RCU	2021-04-12 12:51:14 +08:00
Kconfig	net: ipv6: fix kconfig dependency warning for IPV6_SEG6_HMAC	2021-03-16 16:36:27 +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
addrconf.c	ipv6: Fix error path to cancel the meseage	2021-03-16 16:41:04 +08:00
addrconf_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
addrlabel.c	ipv6: addrlabel: fix possible memory leak in ip6addrlbl_net_init	2021-03-16 16:41:51 +08:00
af_inet6.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
ah6.c	ah6: fix error return code in ah6_input()	2021-03-16 16:41:03 +08:00
anycast.c	ipv6: fix memory leaks on IPV6_ADDRFORM path	2021-03-16 16:33:08 +08:00
calipso.c	netlabel: cope with NULL catmap	2021-03-16 16:27:47 +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
esp6.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
esp6_offload.c	esp6: get the right proto for transport mode in esp6_gso_encap	2021-03-16 16:28:40 +08:00
exthdrs.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
exthdrs_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
exthdrs_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
fib6_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
fib6_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
fou6.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
icmp.c	ip: Fix SO_MARK in RST, ACK and ICMP packets	2021-03-16 16:31:46 +08:00
inet6_connection_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
inet6_hashtables.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
ip6_checksum.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
ip6_fib.c	net: ipv6: fib: flush exceptions when purging route	2021-04-12 12:51:15 +08:00
ip6_flowlabel.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
ip6_gre.c	net: ip6_gre: set dev->hard_header_len when using header_ops	2021-03-16 16:41:55 +08:00
ip6_icmp.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
ip6_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
ip6_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
ip6_offload.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
ip6_output.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
ip6_tunnel.c	gre6: Fix reception with IP6_TNL_F_RCV_DSCP_COPY	2021-03-16 16:34:43 +08:00
ip6_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
ip6_vti.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
ip6mr.c	net: don't return invalid table id error when we fall back to PF_UNSPEC	2021-03-16 16:28:22 +08:00
ipcomp6.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
ipv6_sockglue.c	ipv6: fix memory leaks on IPV6_ADDRFORM path	2021-03-16 16:33:08 +08:00
mcast.c	mld: fix memory leak in ipv6_mc_destroy_dev()	2021-03-16 16:30:45 +08:00
mcast_snoop.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
mip6.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
ndisc.c	Exempt multicast addresses from five-second neighbor lifetime	2021-03-16 16:41:04 +08:00
netfilter.c	netfilter: use actual socket sk rather than skb sk when routing harder	2021-03-16 16:40:35 +08:00
output_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
ping.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
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
reassembly.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	ipv6: Fix nexthop refcnt leak when creating ipv6 route info	2021-03-16 16:33:08 +08:00
seg6.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
seg6_hmac.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
seg6_iptunnel.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
seg6_local.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
sit.c	IPv6: Set SIT tunnel hard_header_len to zero	2021-03-16 16:40:57 +08:00
syncookies.c	net: Update window_clamp if SOCK_RCVBUF is set	2021-03-16 16:40:58 +08:00
sysctl_net_ipv6.c	ipv6: Fix sysctl max for fib_multipath_hash_policy	2021-03-16 16:35:46 +08:00
tcp_ipv6.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
tcpv6_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
tunnel6.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: Improve load balancing for SO_REUSEPORT.	2021-03-16 16:32:43 +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	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
xfrm6_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
xfrm6_output.c	xfrm: Always set XFRM_TRANSFORMED in xfrm{4,6}_output_finish	2021-03-16 16:26:53 +08:00
xfrm6_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
xfrm6_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
xfrm6_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
xfrm6_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