------------[ cut here ]------------
RTNL: assertion failed at net/core/dev.c (10367)
WARNING: CPU: 0 PID: 29443 at net/core/dev.c:10367 unregister_netdevice_many+0x1246/0x1850 net/core/dev.c:10367
Modules linked in:
CPU: 0 PID: 29443 Comm: syz-executor.0 Not tainted 5.16.0-syzkaller-11655-ge5313968c41b #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 59 f1 4a fa ba 7f 28 00 00 48 c7 c6 00 90 ae 8a 48 c7 c7 40 90 ae 8a c6 05 0e a1 51 06 01 e8 3c 8a d8 01 <0f> 0b e9 70 ee ff ff e8 2e f1 4a fa 4c 89 e7 e8 c6 22 59 fa e9 ee
RSP: 0018:ffffc90005a276e0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88804c989d00 RSI: ffffffff815fa058 RDI: fffff52000b44ece
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815f3dbe R11: 0000000000000000 R12: 00000000fffffff4
R13: dffffc0000000000 R14: ffffc90005a27750 R15: ffff888077a74000
FS:  00007fe4b7d2d700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa62563298c CR3: 000000005c781000 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+0x2e15/0x7310 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: 0033:0x7fe4b93b8059
Code: Unable to access opcode bytes at RIP 0x7fe4b93b802f.
RSP: 002b:00007fe4b7d2d118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fe4b94caf60 RCX: 00007fe4b93b8059
RDX: 00000000200001c0 RSI: 00000000200001a0 RDI: 0000000041200200
RBP: 00007fe4b941208d R08: 0000000020000240 R09: 0000000020000240
R10: 0000000020000200 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffc1979412f R14: 00007fe4b7d2d300 R15: 0000000000022000
 </TASK>