------------[ cut here ]------------ kernel BUG at net/core/dev.c:10648! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 18155 Comm: syz-executor.2 Not tainted 5.11.0-rc2-next-20210111-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 e9 a7 fa e9 47 ff ff ff e8 ad 64 7b fa <0f> 0b e8 a6 64 7b fa 0f b6 2d a9 27 f8 05 31 ff 89 ee e8 16 6b 7b RSP: 0018:ffffc90001d6f1a0 EFLAGS: 00010212 RAX: 0000000000014771 RBX: ffff8880601b0000 RCX: ffffc9000d722000 RDX: 0000000000040000 RSI: ffffffff86f7ae93 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff86f7adb3 R11: 0000000000000003 R12: ffff8880601afef8 R13: ffff8880601b0058 R14: dffffc0000000000 R15: ffff8880601afef8 FS: 00007f356dfb9700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe1147c7db8 CR3: 000000005b2b9000 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:00007f356dfb8c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000006 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffef74538bf R14: 00007f356dfb99c0 R15: 000000000119bf8c Modules linked in: ---[ end trace c93700ebe8ed2114 ]--- 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 e9 a7 fa e9 47 ff ff ff e8 ad 64 7b fa <0f> 0b e8 a6 64 7b fa 0f b6 2d a9 27 f8 05 31 ff 89 ee e8 16 6b 7b RSP: 0018:ffffc90001d6f1a0 EFLAGS: 00010212 RAX: 0000000000014771 RBX: ffff8880601b0000 RCX: ffffc9000d722000 RDX: 0000000000040000 RSI: ffffffff86f7ae93 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff86f7adb3 R11: 0000000000000003 R12: ffff8880601afef8 R13: ffff8880601b0058 R14: dffffc0000000000 R15: ffff8880601afef8 FS: 00007f356dfb9700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005628f1a5a9a8 CR3: 000000005b2b9000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400