Eric Dumazet 5611a00697 ipmr,ip6mr: acquire RTNL before calling ip[6]mr_free_table() on failure path ... ip[6]mr_free_table() can only be called under RTNL lock. RTNL: assertion failed at net/core/dev.c (10367) WARNING: CPU: 1 PID: 5890 at net/core/dev.c:10367 unregister_netdevice_many+0x1246/0x1850 net/core/dev.c:10367 Modules linked in: CPU: 1 PID: 5890 Comm: syz-executor.2 Not tainted 5.16.0-syzkaller-11627-g422ee58dc0ef #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:unregister_netdevice_many+0x1246/0x1850 net/core/dev.c:10367 Code: 0f 85 9b ee ff ff e8 69 07 4b fa ba 7f 28 00 00 48 c7 c6 00 90 ae 8a 48 c7 c7 40 90 ae 8a c6 05 6d b1 51 06 01 e8 8c 90 d8 01 <0f> 0b e9 70 ee ff ff e8 3e 07 4b fa 4c 89 e7 e8 86 2a 59 fa e9 ee RSP: 0018:ffffc900046ff6e0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888050f51d00 RSI: ffffffff815fa008 RDI: fffff520008dfece RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815f3d6e R11: 0000000000000000 R12: 00000000fffffff4 R13: dffffc0000000000 R14: ffffc900046ff750 R15: ffff88807b7dc000 FS: 00007f4ab736e700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fee0b4f8990 CR3: 000000001e7d2000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> mroute_clean_tables+0x244/0xb40 net/ipv6/ip6mr.c:1509 ip6mr_free_table net/ipv6/ip6mr.c:389 [inline] ip6mr_rules_init net/ipv6/ip6mr.c:246 [inline] ip6mr_net_init net/ipv6/ip6mr.c:1306 [inline] ip6mr_net_init+0x3f0/0x4e0 net/ipv6/ip6mr.c:1298 ops_init+0xaf/0x470 net/core/net_namespace.c:140 setup_net+0x54f/0xbb0 net/core/net_namespace.c:331 copy_net_ns+0x318/0x760 net/core/net_namespace.c:475 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 copy_namespaces+0x391/0x450 kernel/nsproxy.c:178 copy_process+0x2e0c/0x7300 kernel/fork.c:2167 kernel_clone+0xe7/0xab0 kernel/fork.c:2555 __do_sys_clone+0xc8/0x110 kernel/fork.c:2672 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f4ab89f9059 Code: Unable to access opcode bytes at RIP 0x7f4ab89f902f. RSP: 002b:00007f4ab736e118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f4ab8b0bf60 RCX: 00007f4ab89f9059 RDX: 0000000020000280 RSI: 0000000020000270 RDI: 0000000040200000 RBP: 00007f4ab8a5308d R08: 0000000020000300 R09: 0000000020000300 R10: 00000000200002c0 R11: 0000000000000206 R12: 0000000000000000 R13: 00007ffc3977cc1f R14: 00007f4ab736e300 R15: 0000000000022000 </TASK> Fixes: f243e5a785 ("ipmr,ip6mr: call ip6mr_free_table() on failure path") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Cong Wang <cong.wang@bytedance.com> Reported-by: syzbot <syzkaller@googlegroups.com> Link: https://lore.kernel.org/r/20220208053451.2885398-1-eric.dumazet@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2022-02-08 20:49:52 -08:00
..
ila	…
netfilter	netfilter: Remove flowtable relics	2022-01-27 00:00:20 +01:00
Kconfig	…
Makefile	…
addrconf.c	Revert "ipv6: Honor all IPv6 PIO Valid Lifetime values"	2022-01-27 13:35:14 +00:00
addrconf_core.c	ipv6: add net device refcount tracker to struct inet6_dev	2021-12-06 16:05:11 -08:00
addrlabel.c	…
af_inet6.c	net: bpf: Handle return value of BPF_CGROUP_RUN_PROG_INET{4,6}_POST_BIND()	2022-01-06 17:08:35 -08:00
ah6.c	ipv6: ah6: use swap() to make code cleaner	2021-11-18 12:00:15 +00:00
anycast.c	…
calipso.c	…
datagram.c	…
esp6.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next	2022-01-06 11:54:20 +00:00
esp6_offload.c	net: move gro definitions to include/net/gro.h	2021-11-16 13:16:54 +00:00
exthdrs.c	ipv6: Remove duplicate statements	2021-11-14 12:20:44 +00:00
exthdrs_core.c	…
exthdrs_offload.c	…
fib6_notifier.c	…
fib6_rules.c	fib: rules: remove duplicated nla policies	2021-12-16 07:18:35 -08:00
fou6.c	…
icmp.c	icmp: ICMPV6: Examine invoking packet for Segment Route Headers.	2022-01-04 12:17:35 +00:00
inet6_connection_sock.c	…
inet6_hashtables.c	bpf: Add ingress_ifindex to bpf_sk_lookup	2021-11-10 16:29:58 -08:00
ioam6.c	ipv6: ioam: Support for Queue depth data field	2022-01-02 12:15:13 +00:00
ioam6_iptunnel.c	…
ip6_checksum.c	…
ip6_fib.c	ipv6: annotate accesses to fn->fn_sernum	2022-01-20 20:18:37 -08:00
ip6_flowlabel.c	…
ip6_gre.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-01-09 17:00:17 -08:00
ip6_icmp.c	…
ip6_input.c	…
ip6_offload.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-12-02 11:44:56 -08:00
ip6_offload.h	…
ip6_output.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-11-26 13:45:19 -08:00
ip6_tunnel.c	ipv6_tunnel: Rate limit warning messages	2022-01-20 11:38:17 +00:00
ip6_udp_tunnel.c	…
ip6_vti.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-12-30 12:12:12 -08:00
ip6mr.c	ipmr,ip6mr: acquire RTNL before calling ip[6]mr_free_table() on failure path	2022-02-08 20:49:52 -08:00
ipcomp6.c	…
ipv6_sockglue.c	net-ipv6: changes to ->tclass (via IPV6_TCLASS) should sk_dst_reset()	2021-11-24 18:57:23 -08:00
mcast.c	…
mcast_snoop.c	…
mip6.c	…
ndisc.c	…
netfilter.c	…
output_core.c	…
ping.c	net: bpf: Handle return value of BPF_CGROUP_RUN_PROG_INET{4,6}_POST_BIND()	2022-01-06 17:08:35 -08:00
proc.c	…
protocol.c	…
raw.c	ipv6: raw: check passed optlen before reading	2021-12-29 12:32:56 -08:00
reassembly.c	…
route.c	ipv6: annotate accesses to fn->fn_sernum	2022-01-20 20:18:37 -08:00
rpl.c	…
rpl_iptunnel.c	…
seg6.c	icmp: ICMPV6: Examine invoking packet for Segment Route Headers.	2022-01-04 12:17:35 +00:00
seg6_hmac.c	…
seg6_iptunnel.c	seg6: fix the iif in the IPv6 socket control block	2021-12-09 07:55:42 -08:00
seg6_local.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-01-05 14:36:10 -08:00
sit.c	sit: allow encapsulated IPv6 traffic to be delivered locally	2022-01-12 13:56:07 -08:00
syncookies.c	net: align static siphash keys	2021-11-16 19:07:54 -08:00
sysctl_net_ipv6.c	…
tcp_ipv6.c	net: bpf: Handle return value of BPF_CGROUP_RUN_PROG_INET{4,6}_POST_BIND()	2022-01-06 17:08:35 -08:00
tcpv6_offload.c	net: move gro definitions to include/net/gro.h	2021-11-16 13:16:54 +00:00
tunnel6.c	…
udp.c	Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2022-01-06 18:07:26 -08:00
udp_impl.h	…
udp_offload.c	gro: remove rcu_read_lock/rcu_read_unlock from gro_receive handlers	2021-11-24 17:21:42 -08:00
udplite.c	…
xfrm6_input.c	…
xfrm6_output.c	…
xfrm6_policy.c	xfrm: use net device refcount tracker helpers	2021-12-09 11:51:45 -08:00
xfrm6_protocol.c	…
xfrm6_state.c	…
xfrm6_tunnel.c	…