Haishuang Yan
cd1aa9c2c6
ip_vti: fix a null pointer deferrence when create vti fallback tunnel
After set fb_tunnels_only_for_init_net to 1, the itn->fb_tunnel_dev will
be NULL and will cause following crash:
[ 2742.849298] BUG: unable to handle kernel NULL pointer dereference at 0000000000000941
[ 2742.851380] PGD 800000042c21a067 P4D 800000042c21a067 PUD 42aaed067 PMD 0
[ 2742.852818] Oops: 0002 [#1] SMP PTI
[ 2742.853570] CPU: 7 PID: 2484 Comm: unshare Kdump: loaded Not tainted 4.18.0-rc8+ #2
[ 2742.855163] Hardware name: Fedora Project OpenStack Nova, BIOS seabios-1.7.5-11.el7 04/01/2014
[ 2742.856970] RIP: 0010:vti_init_net+0x3a/0x50 [ip_vti]
[ 2742.858034] Code: 90 83 c0 48 c7 c2 20 a1 83 c0 48 89 fb e8 6e 3b f6 ff 85 c0 75 22 8b 0d f4 19 00 00 48 8b 93 00 14 00 00 48 8b 14 ca 48 8b 12 <c6> 82 41 09 00 00 04 c6 82 38 09 00 00 45 5b c3 66 0f 1f 44 00 00
[ 2742.861940] RSP: 0018:ffff9be28207fde0 EFLAGS: 00010246
[ 2742.863044] RAX: 0000000000000000 RBX: ffff8a71ebed4980 RCX: 0000000000000013
[ 2742.864540] RDX: 0000000000000000 RSI: 0000000000000013 RDI: ffff8a71ebed4980
[ 2742.866020] RBP: ffff8a71ea717000 R08: ffffffffc083903c R09: ffff8a71ea717000
[ 2742.867505] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8a71ebed4980
[ 2742.868987] R13: 0000000000000013 R14: ffff8a71ea5b49c0 R15: 0000000000000000
[ 2742.870473] FS: 00007f02266c9740(0000) GS:ffff8a71ffdc0000(0000) knlGS:0000000000000000
[ 2742.872143] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2742.873340] CR2: 0000000000000941 CR3: 000000042bc20006 CR4: 00000000001606e0
[ 2742.874821] Call Trace:
[ 2742.875358] ops_init+0x38/0xf0
[ 2742.876078] setup_net+0xd9/0x1f0
[ 2742.876789] copy_net_ns+0xb7/0x130
[ 2742.877538] create_new_namespaces+0x11a/0x1d0
[ 2742.878525] unshare_nsproxy_namespaces+0x55/0xa0
[ 2742.879526] ksys_unshare+0x1a7/0x330
[ 2742.880313] __x64_sys_unshare+0xe/0x20
[ 2742.881131] do_syscall_64+0x5b/0x180
[ 2742.881933] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Reproduce:
echo 1 > /proc/sys/net/core/fb_tunnels_only_for_init_net
modprobe ip_vti
unshare -n
Fixes: 79134e6ce2 ("net: do not create fallback tunnels for non-default namespaces")
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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2018-08-19 11:26:39 -07:00 |
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bpfilter
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bpfilter: remove trailing newline
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2018-07-24 14:10:42 -07:00 |
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netfilter
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
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2018-07-20 22:28:28 -07:00 |
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af_inet.c
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net: ipv4: Control SKB reprioritization after forwarding
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2018-08-01 09:52:30 -07:00 |
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ah4.c
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arp.c
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proc: introduce proc_create_net{,_data}
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2018-05-16 07:24:30 +02:00 |
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cipso_ipv4.c
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datagram.c
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devinet.c
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route: add support for directed broadcast forwarding
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2018-07-29 12:37:06 -07:00 |
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esp4.c
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esp4_offload.c
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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
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2018-07-27 09:33:37 -07:00 |
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fib_frontend.c
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ipv4: remove BUG_ON() from fib_compute_spec_dst
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2018-07-28 19:06:12 -07:00 |
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fib_lookup.h
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fib_notifier.c
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fib_rules.c
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net: fib_rules: add extack support
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2018-04-23 10:21:24 -04:00 |
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fib_semantics.c
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net: metrics: add proper netlink validation
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2018-06-05 12:29:43 -04:00 |
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fib_trie.c
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
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2018-06-06 18:39:49 -07:00 |
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fou.c
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Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net
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2018-07-03 10:29:26 +09:00 |
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gre_demux.c
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gre_offload.c
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Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net
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2018-07-03 10:29:26 +09:00 |
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icmp.c
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ipv4: ipcm_cookie initializers
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2018-07-07 10:58:49 +09:00 |
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igmp.c
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Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net
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2018-08-02 10:55:32 -07:00 |
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inet_connection_sock.c
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bpf: Introduce BPF_PROG_TYPE_SK_REUSEPORT
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2018-08-11 01:58:46 +02:00 |
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inet_diag.c
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inet_fragment.c
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ip: process in-order fragments efficiently
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2018-08-11 17:54:18 -07:00 |
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inet_hashtables.c
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bpf: Enable BPF_PROG_TYPE_SK_REUSEPORT bpf prog in reuseport selection
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2018-08-11 01:58:46 +02:00 |
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inet_timewait_sock.c
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soreuseport: initialise timewait reuseport field
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2018-04-07 22:32:32 -04:00 |
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inetpeer.c
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inetpeer: fix uninit-value in inet_getpeer
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2018-04-09 10:57:35 -04:00 |
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ip_forward.c
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net: ipv4: Control SKB reprioritization after forwarding
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2018-08-01 09:52:30 -07:00 |
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ip_fragment.c
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ip: process in-order fragments efficiently
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2018-08-11 17:54:18 -07:00 |
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ip_gre.c
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ip_gre: remove redundant variables t_hlen
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2018-08-01 09:58:15 -07:00 |
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ip_input.c
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net: ipv4: fix listify ip_rcv_finish in case of forwarding
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2018-07-12 16:40:19 -07:00 |
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ip_options.c
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ip_output.c
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Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net
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2018-07-24 19:21:58 -07:00 |
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ip_sockglue.c
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ip: in cmsg IP(V6)_ORIGDSTADDR call pskb_may_pull
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2018-07-24 16:35:58 -07:00 |
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ip_tunnel.c
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ip_tunnel: Fix name string concatenate in __ip_tunnel_create()
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2018-06-07 16:27:16 -04:00 |
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ip_tunnel_core.c
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net/ipv4: Update ip_tunnel_metadata_cnt static key to modern api
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2018-05-10 15:13:33 -04:00 |
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ip_vti.c
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ip_vti: fix a null pointer deferrence when create vti fallback tunnel
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2018-08-19 11:26:39 -07:00 |
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ipcomp.c
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ipconfig.c
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
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2018-06-06 18:39:49 -07:00 |
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ipip.c
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net: Drop pernet_operations::async
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2018-03-27 13:18:09 -04:00 |
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ipmr.c
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net: ipmr: add support for passing full packet on wrong vif
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2018-07-13 14:21:16 -07:00 |
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ipmr_base.c
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rhashtable: split rhashtable.h
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2018-06-22 13:43:27 +09:00 |
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Kconfig
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net: remove blank lines at end of file
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2018-07-24 14:10:43 -07:00 |
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Makefile
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net: remove blank lines at end of file
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2018-07-24 14:10:43 -07:00 |
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metrics.c
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net: metrics: add proper netlink validation
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2018-06-05 12:29:43 -04:00 |
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netfilter.c
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netfilter: utils: move nf_ip_checksum* from ipv4 to utils
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2018-07-16 17:51:48 +02:00 |
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netlink.c
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ipv4: support sport, dport and ip_proto in RTM_GETROUTE
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2018-05-23 15:14:12 -04:00 |
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ping.c
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net: add helpers checking if socket can be bound to nonlocal address
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2018-08-01 09:50:04 -07:00 |
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proc.c
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ip: discard IPv4 datagrams with overlapping segments.
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2018-08-05 17:16:46 -07:00 |
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protocol.c
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raw.c
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ip: remove tx_flags from ipcm_cookie and use same logic for v4 and v6
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2018-07-07 10:58:49 +09:00 |
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raw_diag.c
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route.c
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route: add support for directed broadcast forwarding
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2018-07-29 12:37:06 -07:00 |
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syncookies.c
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sysctl_net_ipv4.c
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net: ipv4: Notify about changes to ip_forward_update_priority
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2018-08-01 09:52:30 -07:00 |
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tcp.c
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tcp: remove unneeded variable 'err'
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2018-08-03 16:52:07 -07:00 |
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tcp_bbr.c
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Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net
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2018-08-02 10:55:32 -07:00 |
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tcp_bic.c
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tcp_cdg.c
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tcp_cong.c
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tcp_cubic.c
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tcp_dctcp.c
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tcp: avoid resetting ACK timer in DCTCP
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2018-08-11 11:31:35 -07:00 |
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tcp_diag.c
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tcp_fastopen.c
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tcp_highspeed.c
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tcp_htcp.c
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tcp_hybla.c
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tcp_illinois.c
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tcp_input.c
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tcp: avoid resetting ACK timer upon receiving packet with ECN CWR flag
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2018-08-11 11:31:35 -07:00 |
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tcp_ipv4.c
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Merge ra.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux
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2018-07-20 21:17:12 -07:00 |
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tcp_lp.c
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tcp_metrics.c
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net: Drop pernet_operations::async
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2018-03-27 13:18:09 -04:00 |
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tcp_minisocks.c
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tcp: use monotonic timestamps for PAWS
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2018-07-12 14:50:40 -07:00 |
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tcp_nv.c
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tcp_offload.c
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tcp: Don't coalesce decrypted and encrypted SKBs
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2018-07-16 00:12:09 -07:00 |
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tcp_output.c
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tcp: remove set but not used variable 'skb_size'
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2018-08-01 09:57:09 -07:00 |
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tcp_rate.c
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tcp: expose both send and receive intervals for rate sample
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2018-07-11 23:01:56 -07:00 |
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tcp_recovery.c
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tcp: add stat of data packet reordering events
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2018-08-01 09:56:10 -07:00 |
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tcp_scalable.c
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tcp_timer.c
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tcp: make function tcp_retransmit_stamp() static
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2018-07-25 16:35:45 -07:00 |
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tcp_ulp.c
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tcp, ulp: fix leftover icsk_ulp_ops preventing sock from reattach
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2018-08-16 14:58:08 -07:00 |
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tcp_vegas.c
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tcp_vegas.h
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tcp_veno.c
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tcp_westwood.c
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tcp_yeah.c
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tunnel4.c
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udp.c
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bpf: Enable BPF_PROG_TYPE_SK_REUSEPORT bpf prog in reuseport selection
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2018-08-11 01:58:46 +02:00 |
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udp_diag.c
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udp: fix rx queue len reported by diag and proc interface
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2018-06-08 19:55:15 -04:00 |
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udp_impl.h
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udp_offload.c
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Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net
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2018-07-03 10:29:26 +09:00 |
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udp_tunnel.c
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udplite.c
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proc: introduce proc_create_net{,_data}
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2018-05-16 07:24:30 +02:00 |
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xfrm4_input.c
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xfrm4_mode_beet.c
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xfrm4_mode_transport.c
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xfrm4_mode_tunnel.c
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xfrm4_output.c
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xfrm4_policy.c
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net: Drop pernet_operations::async
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2018-03-27 13:18:09 -04:00 |
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xfrm4_protocol.c
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xfrm4_state.c
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xfrm4_tunnel.c
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