------------[ cut here ]------------
WARNING: CPU: 0 PID: 11100 at net/core/dev.c:8992 rollback_registered_many+0x1146/0x14a0 net/core/dev.c:8992
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 11100 Comm: syz-executor.0 Not tainted 5.8.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1f0/0x31e lib/dump_stack.c:118
 panic+0x264/0x7a0 kernel/panic.c:231
 __warn+0x227/0x250 kernel/panic.c:600
 report_bug+0x1b1/0x2e0 lib/bug.c:198
 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:235
 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:255
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:542
RIP: 0010:rollback_registered_many+0x1146/0x14a0 net/core/dev.c:8992
Code: 4c 8d bc 24 90 00 00 00 e9 97 f6 ff ff e8 42 aa 07 fb 0f 0b e9 e9 f6 ff ff e8 36 aa 07 fb 0f 0b e9 1c ff ff ff e8 2a aa 07 fb <0f> 0b e9 70 ff ff ff e8 1e aa 07 fb 0f 0b e9 fc f7 ff ff e8 12 aa
RSP: 0018:ffffc900048071d8 EFLAGS: 00010283
RAX: ffffffff866ce1f6 RBX: ffff88804aaf40b8 RCX: 0000000000040000
RDX: ffffc900019e9000 RSI: 000000000002ca49 RDI: 000000000002ca4a
RBP: ffff88804aaf4010 R08: ffffffff866ce11d R09: fffffbfff12b74c1
R10: fffffbfff12b74c1 R11: 0000000000000000 R12: dead000000000122
R13: dffffc0000000000 R14: ffff88804aaf4068 R15: ffffc900048072d0
 rollback_registered net/core/dev.c:9013 [inline]
 unregister_netdevice_queue+0x2f3/0x4b0 net/core/dev.c:10094
 unregister_netdevice include/linux/netdevice.h:2754 [inline]
 hsr_dev_finalize+0x4d4/0x6d0 net/hsr/hsr_device.c:483
 hsr_newlink+0x410/0x4c0 net/hsr/hsr_netlink.c:83
 __rtnl_newlink net/core/rtnetlink.c:3339 [inline]
 rtnl_newlink+0x143e/0x1bf0 net/core/rtnetlink.c:3397
 rtnetlink_rcv_msg+0x889/0xd40 net/core/rtnetlink.c:5460
 netlink_rcv_skb+0x190/0x3a0 net/netlink/af_netlink.c:2469
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x786/0x940 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0xa57/0xd70 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg net/socket.c:672 [inline]
 ____sys_sendmsg+0x519/0x800 net/socket.c:2352
 ___sys_sendmsg net/socket.c:2406 [inline]
 __sys_sendmsg+0x2b1/0x360 net/socket.c:2439
 do_syscall_64+0x73/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cba9
Code: Bad RIP value.
RSP: 002b:00007fb900446c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000503800 RCX: 000000000045cba9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000006
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000a6c R14: 00000000004cd48b R15: 00007fb9004476d4
Kernel Offset: disabled
Rebooting in 86400 seconds..