------------[ cut here ]------------
WARNING: CPU: 0 PID: 9914 at net/core/dev.c:8859 dev_xdp_uninstall net/core/dev.c:8859 [inline]
WARNING: CPU: 0 PID: 9914 at net/core/dev.c:8859 rollback_registered_many+0xe71/0x1210 net/core/dev.c:9279
Modules linked in:
CPU: 0 PID: 9914 Comm: syz-executor.3 Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dev_xdp_uninstall net/core/dev.c:8859 [inline]
RIP: 0010:rollback_registered_many+0xe71/0x1210 net/core/dev.c:9279
Code: 90 22 00 00 48 c7 c6 60 8d ff 88 48 c7 c7 a0 8d ff 88 c6 05 94 06 76 04 01 e8 e6 9e 03 fb 0f 0b e9 db f7 ff ff e8 1f 2c 33 fb <0f> 0b e9 48 fe ff ff 48 89 ef e9 a2 fb ff ff e8 0b 2c 33 fb 0f b6
RSP: 0018:ffffc900057c7428 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff88804930cbb8 RCX: ffffc9000ece2000
RDX: 0000000000040000 RSI: ffffffff8641b6e1 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8a88a7a7
R10: 0000000000000000 R11: 0000000000000001 R12: 00000000fffffff0
R13: ffff88804930c000 R14: dffffc0000000000 R15: ffffc90005849000
FS:  00007f189fdfe700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8967746db8 CR3: 000000009663f000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rollback_registered net/core/dev.c:9329 [inline]
 unregister_netdevice_queue+0x2dd/0x570 net/core/dev.c:10410
 unregister_netdevice include/linux/netdevice.h:2794 [inline]
 nsim_destroy+0x35/0x70 drivers/net/netdevsim/netdev.c:339
 __nsim_dev_port_del+0x144/0x1e0 drivers/net/netdevsim/dev.c:946
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:959 [inline]
 nsim_dev_reload_destroy+0xff/0x1e0 drivers/net/netdevsim/dev.c:1135
 nsim_dev_reload_down+0x6e/0xd0 drivers/net/netdevsim/dev.c:712
 devlink_reload+0xc1/0x3a0 net/core/devlink.c:2974
 devlink_nl_cmd_reload+0x707/0x830 net/core/devlink.c:3009
 genl_family_rcv_msg_doit net/netlink/genetlink.c:669 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:714 [inline]
 genl_rcv_msg+0x61d/0x980 net/netlink/genetlink.c:731
 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2470
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:742
 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:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d5b9
Code: 5d 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f189fdfdc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000028940 RCX: 000000000045d5b9
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000005
RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffd02bf193f R14: 00007f189fdfe9c0 R15: 000000000118cf4c