IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready list_add double add: new=ffff8880463fe160, prev=ffff8880232e4050, next=ffff8880463fe160. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:31! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 30878 Comm: syz-executor.1 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_add_valid+0x8a/0xc0 lib/list_debug.c:29 Code: 74 11 4d 39 f7 74 0c b0 01 5b 41 5c 41 5d 41 5e 41 5f c3 48 c7 c7 80 9b d4 8a 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 ae e1 50 fd <0f> 0b 48 c7 c7 40 9a d4 8a 4c 89 e6 4c 89 f1 31 c0 e8 98 e1 50 fd RSP: 0018:ffffc90002fce768 EFLAGS: 00010246 RAX: 0000000000000058 RBX: ffff8880463fe168 RCX: 2f5dfca5f7a9aa00 RDX: ffffc9000da11000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffff8880463fe160 R08: ffffffff8169d332 R09: ffffed10173467a9 R10: ffffed10173467a9 R11: 0000000000000000 R12: ffff8880232e4050 R13: dffffc0000000000 R14: ffff8880463fe160 R15: ffff8880463fe160 FS: 00007f2fe987f700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31a2d000 CR3: 0000000032ea0000 CR4: 00000000003506f0 Call Trace: __list_add_rcu include/linux/rculist.h:79 [inline] list_add_rcu include/linux/rculist.h:106 [inline] netif_napi_add+0x59e/0xc20 net/core/dev.c:6913 veth_enable_xdp_range+0xd3/0x310 drivers/net/veth.c:1009 veth_enable_xdp+0x2b1/0x560 drivers/net/veth.c:1063 veth_xdp_set drivers/net/veth.c:1483 [inline] veth_xdp+0x437/0x670 drivers/net/veth.c:1523 dev_xdp_install net/core/dev.c:9384 [inline] dev_xdp_attach+0xd50/0x1160 net/core/dev.c:9532 dev_change_xdp_fd+0x1ce/0x250 net/core/dev.c:9772 do_setlink+0x3ceb/0x4300 net/core/rtnetlink.c:2931 rtnl_group_changelink net/core/rtnetlink.c:3242 [inline] __rtnl_newlink net/core/rtnetlink.c:3396 [inline] rtnl_newlink+0x1155/0x1d10 net/core/rtnetlink.c:3506 rtnetlink_rcv_msg+0x934/0xe60 net/core/rtnetlink.c:5571 netlink_rcv_skb+0x200/0x470 net/netlink/af_netlink.c:2491 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x814/0x9f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0xa20/0xe40 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg net/socket.c:724 [inline] ____sys_sendmsg+0x5b9/0x910 net/socket.c:2409 ___sys_sendmsg net/socket.c:2463 [inline] __sys_sendmsg+0x280/0x370 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f2fec309ae9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2fe987f188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2fec41cf60 RCX: 00007f2fec309ae9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 00007f2fec363f25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd50845fef R14: 00007f2fe987f300 R15: 0000000000022000 Modules linked in: ---[ end trace 3e89c64d4646c77d ]--- RIP: 0010:__list_add_valid+0x8a/0xc0 lib/list_debug.c:29 Code: 74 11 4d 39 f7 74 0c b0 01 5b 41 5c 41 5d 41 5e 41 5f c3 48 c7 c7 80 9b d4 8a 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 ae e1 50 fd <0f> 0b 48 c7 c7 40 9a d4 8a 4c 89 e6 4c 89 f1 31 c0 e8 98 e1 50 fd RSP: 0018:ffffc90002fce768 EFLAGS: 00010246 RAX: 0000000000000058 RBX: ffff8880463fe168 RCX: 2f5dfca5f7a9aa00 RDX: ffffc9000da11000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffff8880463fe160 R08: ffffffff8169d332 R09: ffffed10173467a9 R10: ffffed10173467a9 R11: 0000000000000000 R12: ffff8880232e4050 R13: dffffc0000000000 R14: ffff8880463fe160 R15: ffff8880463fe160 FS: 00007f2fe987f700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31a2d000 CR3: 0000000032ea0000 CR4: 00000000003506f0