------------[ cut here ]------------ kernel BUG at lib/list_debug.c:29! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 9582 Comm: syz-executor.5 Not tainted 5.1.0+ #18 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_add_valid.cold+0x26/0x3c lib/list_debug.c:29 Code: 56 ff ff ff 4c 89 e1 48 c7 c7 20 4c a3 87 e8 00 60 25 fe 0f 0b 48 89 f2 4c 89 e1 4c 89 ee 48 c7 c7 60 4d a3 87 e8 e9 5f 25 fe <0f> 0b 48 89 f1 48 c7 c7 e0 4c a3 87 4c 89 e6 e8 d5 5f 25 fe 0f 0b RSP: 0018:ffff888074e47b88 EFLAGS: 00010282 RAX: 0000000000000058 RBX: ffffffff89544920 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815afbe6 RDI: ffffed100e9c8f63 RBP: ffff888074e47ba0 R08: 0000000000000058 R09: ffffed1015d06011 R10: ffffed1015d06010 R11: ffff8880ae830087 R12: ffffffff89544ab0 R13: ffffffff89544ab0 R14: ffffffff89544ab0 R15: ffffffff89544a50 FS: 0000000001b93940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd6092ea68 CR3: 0000000074e1e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:60 [inline] list_add include/linux/list.h:79 [inline] proto_register+0x459/0x8e0 net/core/sock.c:3385 tipc_socket_init+0x1c/0x70 net/tipc/socket.c:3241 tipc_init_net+0x32a/0x5b0 net/tipc/core.c:71 ops_init+0xb6/0x410 net/core/net_namespace.c:129 setup_net+0x2d3/0x740 net/core/net_namespace.c:315 copy_net_ns+0x1df/0x340 net/core/net_namespace.c:438 create_new_namespaces+0x400/0x7b0 kernel/nsproxy.c:107 unshare_nsproxy_namespaces+0xc2/0x200 kernel/nsproxy.c:206 ksys_unshare+0x440/0x980 kernel/fork.c:2664 __do_sys_unshare kernel/fork.c:2732 [inline] __se_sys_unshare kernel/fork.c:2730 [inline] __x64_sys_unshare+0x31/0x40 kernel/fork.c:2730 do_syscall_64+0x103/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b897 Code: 00 00 00 b8 63 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 8d fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8d 8d fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffe646dc9f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 000000000073c988 RCX: 000000000045b897 RDX: 0000000000000000 RSI: 00007ffe646dc9a0 RDI: 0000000040000000 RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000005 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000414ab0 R13: 0000000000414b40 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: