------------[ cut here ]------------ kernel BUG at net/core/dev.c:10648! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 13488 Comm: syz-executor.5 Not tainted 5.11.0-rc3-next-20210113-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:free_netdev+0x4b3/0x5e0 net/core/dev.c:10648 Code: c0 01 38 d0 7c 08 84 d2 0f 85 1a 01 00 00 0f b7 83 32 02 00 00 48 29 c3 48 89 df e8 a7 fb a6 fa e9 47 ff ff ff e8 9d 75 7a fa <0f> 0b e8 96 75 7a fa 0f b6 2d ed 26 f7 05 31 ff 89 ee e8 06 7c 7a RSP: 0018:ffffc900138671a0 EFLAGS: 00010216 RAX: 0000000000017818 RBX: ffff888078ece000 RCX: ffffc900139fd000 RDX: 0000000000040000 RSI: ffffffff86f8b2d3 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff86f8b1f3 R11: 0000000000000003 R12: ffff888078ecdef8 R13: ffff888078ece058 R14: dffffc0000000000 R15: ffff888078ecdef8 FS: 00007fec0f3af700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f41bb9b19a1 CR3: 000000001aef8000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __rtnl_newlink+0x1484/0x16e0 net/core/rtnetlink.c:3447 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3491 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5553 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2345 ___sys_sendmsg+0xf3/0x170 net/socket.c:2399 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2432 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fec0f3aec68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000020000004 RSI: 0000000020000580 RDI: 0000000000000005 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffe7f24dc9f R14: 00007fec0f3af9c0 R15: 000000000119bf8c Modules linked in: ---[ end trace 4cc5e4f7c34c6eee ]--- RIP: 0010:free_netdev+0x4b3/0x5e0 net/core/dev.c:10648 Code: c0 01 38 d0 7c 08 84 d2 0f 85 1a 01 00 00 0f b7 83 32 02 00 00 48 29 c3 48 89 df e8 a7 fb a6 fa e9 47 ff ff ff e8 9d 75 7a fa <0f> 0b e8 96 75 7a fa 0f b6 2d ed 26 f7 05 31 ff 89 ee e8 06 7c 7a RSP: 0018:ffffc900138671a0 EFLAGS: 00010216 RAX: 0000000000017818 RBX: ffff888078ece000 RCX: ffffc900139fd000 RDX: 0000000000040000 RSI: ffffffff86f8b2d3 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff86f8b1f3 R11: 0000000000000003 R12: ffff888078ecdef8 R13: ffff888078ece058 R14: dffffc0000000000 R15: ffff888078ecdef8 FS: 00007fec0f3af700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004e1670 CR3: 000000001aef8000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400