Miaohe Lin a843dc4eba net: sit: fix UBSAN Undefined behaviour in check_6rd ... In func check_6rd,tunnel->ip6rd.relay_prefixlen may equal to 32,so UBSAN complain about it. UBSAN: Undefined behaviour in net/ipv6/sit.c:781:47 shift exponent 32 is too large for 32-bit type 'unsigned int' CPU: 6 PID: 20036 Comm: syz-executor.0 Not tainted 4.19.27 #2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 ubsan_epilogue+0xe/0x81 lib/ubsan.c:159 __ubsan_handle_shift_out_of_bounds+0x293/0x2e8 lib/ubsan.c:425 check_6rd.constprop.9+0x433/0x4e0 net/ipv6/sit.c:781 try_6rd net/ipv6/sit.c:806 [inline] ipip6_tunnel_xmit net/ipv6/sit.c:866 [inline] sit_tunnel_xmit+0x141c/0x2720 net/ipv6/sit.c:1033 __netdev_start_xmit include/linux/netdevice.h:4300 [inline] netdev_start_xmit include/linux/netdevice.h:4309 [inline] xmit_one net/core/dev.c:3243 [inline] dev_hard_start_xmit+0x17c/0x780 net/core/dev.c:3259 __dev_queue_xmit+0x1656/0x2500 net/core/dev.c:3829 neigh_output include/net/neighbour.h:501 [inline] ip6_finish_output2+0xa36/0x2290 net/ipv6/ip6_output.c:120 ip6_finish_output+0x3e7/0xa20 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip6_output+0x1e2/0x720 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:444 [inline] ip6_local_out+0x99/0x170 net/ipv6/output_core.c:176 ip6_send_skb+0x9d/0x2f0 net/ipv6/ip6_output.c:1697 ip6_push_pending_frames+0xc0/0x100 net/ipv6/ip6_output.c:1717 rawv6_push_pending_frames net/ipv6/raw.c:616 [inline] rawv6_sendmsg+0x2435/0x3530 net/ipv6/raw.c:946 inet_sendmsg+0xf8/0x5c0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xc8/0x110 net/socket.c:631 ___sys_sendmsg+0x6cf/0x890 net/socket.c:2114 __sys_sendmsg+0xf0/0x1b0 net/socket.c:2152 do_syscall_64+0xc8/0x580 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Signed-off-by: linmiaohe <linmiaohe@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2019-03-11 10:32:45 -07:00
..
ila	ila: Fix uninitialised return value in ila_xlat_nl_cmd_flush	2019-02-24 21:54:44 -08:00
netfilter	netfilter: nf_tables: merge ipv4 and ipv6 nat chain types	2019-03-01 14:36:59 +01:00
addrconf_core.c	ipv6_stub: add ipv6_route_input stub/proxy.	2019-02-13 18:27:55 -08:00
addrconf.c	net: ignore sysctl_devconf_inherit_init_net without SYSCTL	2019-03-04 13:14:34 -08:00
addrlabel.c	net: ipv6: addrlabel: perform strict checks also for doit handlers	2019-01-19 10:09:59 -08:00
af_inet6.c	ipv6_stub: add ipv6_route_input stub/proxy.	2019-02-13 18:27:55 -08:00
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: compute anycast address hash only if dev is null	2018-11-08 17:04:43 -08:00
calipso.c	ipv6: make ipv6_renew_options() interrupt/kernel safe	2018-07-05 20:15:26 +09:00
datagram.c	ipv6: fix kernel-infoleak in ipv6_local_error()	2019-01-10 09:36:41 -05:00
esp6_offload.c	net: use skb_sec_path helper in more places	2018-12-19 11:21:37 -08:00
esp6.c	esp: Skip TX bytes accounting when sending from a request socket	2019-01-28 11:20:58 +01:00
exthdrs_core.c	net: ipv6: Fix typo in ipv6_find_hdr() documentation	2018-05-07 23:50:27 -04:00
exthdrs_offload.c
exthdrs.c	ipv6: make ipv6_renew_options() interrupt/kernel safe	2018-07-05 20:15:26 +09:00
fib6_notifier.c	net: Add module reference to FIB notifiers	2017-09-01 20:33:42 -07:00
fib6_rules.c	net/ipv6: Add fib6_lookup	2018-05-11 00:10:56 +02:00
fou6.c	fou, fou6: avoid uninit-value in gue_err() and gue6_err()	2019-03-08 15:19:53 -08:00
icmp.c	ipv6: icmp: use percpu allocation	2019-02-24 21:57:26 -08:00
inet6_connection_sock.c
inet6_hashtables.c	net: tcp6: prefer listeners bound to an address	2018-12-14 15:55:20 -08:00
ip6_checksum.c	net: udp: fix handling of CHECKSUM_COMPLETE packets	2018-10-24 14:18:16 -07:00
ip6_fib.c	ipv6: Fix dump of specific table with strict checking	2019-01-02 20:15:43 -08:00
ip6_flowlabel.c	ipv6: fold sockcm_cookie into ipcm6_cookie	2018-07-07 10:58:49 +09:00
ip6_gre.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-02-24 12:06:19 -08:00
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	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-12-09 21:43:31 -08:00
ip6_offload.c	gso: validate gso_type on ipip style tunnels	2019-02-20 11:24:27 -08:00
ip6_offload.h
ip6_output.c	net: ipv6: add socket option IPV6_ROUTER_ALERT_ISOLATE	2019-03-03 21:05:10 -08:00
ip6_tunnel.c	ip: validate header length on virtual device xmit	2019-01-01 12:05:02 -08:00
ip6_udp_tunnel.c	net/ipv6/udp_tunnel: prefer SO_BINDTOIFINDEX over SO_BINDTODEVICE	2019-01-17 14:55:52 -08:00
ip6_vti.c	ip: validate header length on virtual device xmit	2019-01-01 12:05:02 -08:00
ip6mr.c	ip6mr: Do not call __IP6_INC_STATS() from preemptible context	2019-03-04 10:55:48 -08:00
ipcomp6.c
ipv6_sockglue.c	net: ipv6: add socket option IPV6_ROUTER_ALERT_ISOLATE	2019-03-03 21:05:10 -08:00
Kconfig	net: remove blank lines at end of file	2018-07-24 14:10:43 -07:00
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: remove unneeded switch fall-through	2019-02-21 13:48:00 -08:00
mcast.c	bridge: join all-snoopers multicast address	2019-01-22 17:18:08 -08:00
mip6.c
ndisc.c	ipv6/ndisc: Preserve IPv6 control buffer if protocol error handlers are called	2018-10-26 15:58:06 -07:00
netfilter.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next	2019-02-18 11:38:30 -08:00
output_core.c	net: accept UFO datagrams from tuntap and packet	2017-11-24 01:37:35 +09:00
ping.c	ipv6: fold sockcm_cookie into ipcm6_cookie	2018-07-07 10:58:49 +09:00
proc.c	proc: introduce proc_create_net_single	2018-05-16 07:24:30 +02:00
protocol.c
raw.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-12-20 11:53:36 -08:00
reassembly.c	net: remove unused struct inet_frag_queue.fragments field	2019-02-26 08:27:05 -08:00
route.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-03-02 12:54:35 -08:00
seg6_hmac.c	Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net	2018-07-03 10:29:26 +09:00
seg6_iptunnel.c	ipv6: sr: clear IP6CB(skb) on SRH ip4ip6 encapsulation	2019-01-30 14:06:12 -08:00
seg6_local.c	bpf: add End.DT6 action to bpf_lwt_seg6_action helper	2018-07-31 09:22:48 +02:00
seg6.c	ipv6: propagate genlmsg_reply return code	2019-02-12 12:36:02 -05:00
sit.c	net: sit: fix UBSAN Undefined behaviour in check_6rd	2019-03-11 10:32:45 -07:00
syncookies.c	net/ipv4: disable SMC TCP option with SYN Cookies	2018-03-25 20:53:54 -04:00
sysctl_net_ipv6.c	ipv6: sr: Compute flowlabel for outer IPv6 header of seg6 encap mode	2018-04-25 13:02:15 -04:00
tcp_ipv6.c	tcp: clean up SOCK_DEBUG()	2019-02-25 09:41:14 -08:00
tcpv6_offload.c	net: use indirect call wrappers at GRO transport layer	2018-12-15 13:23:02 -08:00
tunnel6.c	net: Convert protocol error handlers from void to int	2018-11-08 17:13:08 -08:00
udp_impl.h	udp6: add missing rehash callback to udplite	2019-01-17 15:01:08 -08:00
udp_offload.c	net: use indirect call wrappers at GRO transport layer	2018-12-15 13:23:02 -08:00
udp.c	udpv6: fix possible user after free in error handler	2019-02-22 16:05:11 -08:00
udplite.c	udp6: add missing rehash callback to udplite	2019-01-17 15:01:08 -08:00
xfrm6_input.c	net: use skb_sec_path helper in more places	2018-12-19 11:21:37 -08:00
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: use 64-bit timestamps	2018-07-11 15:26:35 +02:00
xfrm6_mode_transport.c	xfrm: reset transport header back to network header after all input transforms ahave been applied	2018-09-04 10:26:30 +02:00
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	xfrm6: call kfree_skb when skb is toobig	2018-09-03 07:37:57 +02:00
xfrm6_policy.c	xfrm6: remove BUG_ON from xfrm6_dst_ifdown	2018-11-22 07:55:48 +01:00
xfrm6_protocol.c	net: Convert protocol error handlers from void to int	2018-11-08 17:13:08 -08:00
xfrm6_state.c	xfrm: remove VLA usage in __xfrm6_sort()	2018-04-26 07:51:48 +02:00
xfrm6_tunnel.c	xfrm: destroy xfrm_state synchronously on net exit path	2019-02-05 06:29:20 +01:00