gretap1: entered promiscuous mode
ip6tnl1: entered promiscuous mode
Increase LOCKDEP_CIRCULAR_QUEUE_BITS to avoid this warning:
------------[ cut here ]------------
lockdep bfs error:-1
WARNING: kernel/locking/lockdep.c:2075 at print_bfs_bug+0x20/0x40, CPU#0: syz.0.452/7660
Modules linked in:
CPU: 0 UID: 0 PID: 7660 Comm: syz.0.452 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:print_bfs_bug+0x22/0x40
Code: 90 90 90 90 90 90 90 90 55 53 89 fb e8 e7 18 37 03 89 c5 e8 c0 85 ff ff 85 ed 74 13 83 fb ff 74 16 48 8d 3d d0 d8 d9 0e 89 de <67> 48 0f b9 3a 5b 5d c3 cc cc cc cc cc 48 c7 c7 c6 9f 60 8e e8 95
RSP: 0018:ffffc9000955e4c8 EFLAGS: 00010046
RAX: 000000000000003b RBX: 00000000ffffffff RCX: 3df4decc30482a00
RDX: ffffc90020c04000 RSI: 00000000ffffffff RDI: ffffffff907d52c0
RBP: 0000000000000001 R08: ffffc9000955e247 R09: 1ffff920012abc48
R10: dffffc0000000000 R11: fffff520012abc49 R12: 0000000000000021
R13: ffffffff94433c78 R14: ffff88819fe78c50 R15: ffffffff9732e498
FS:  00007f8ae108d6c0(0000) GS:ffff88818d6d8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb4de2aa866 CR3: 00000001106d4000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __lock_acquire+0x262d/0x2e50
 lock_acquire+0x115/0x350
 seqcount_lockdep_reader_access+0x55/0x100
 ktime_get+0x45/0x220
 clockevents_program_event+0x290/0x630
 __hrtimer_rearm_deferred+0x36c/0x4b0
 irqentry_exit+0x8d3/0x910
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x232/0x350
Code: ff ff ff e8 20 59 41 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 72 64 f1 11 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 cf 5c 44 0a cc 48 8d 3d f7 30 da
RSP: 0018:ffffc9000955e928 EFLAGS: 00000286
RAX: 3df4decc30482a00 RBX: 0000000000000001 RCX: 8000000000000402
RDX: ffffffff944e7520 RSI: ffffffff8e6fcd61 RDI: ffffffff8c6d9480
RBP: ffff88819fe78000 R08: 0000000000000008 R09: ffffffff96b7ef88
R10: 00000000a53711ef R11: 00000000fd2bab0d R12: ffff8881aa53f170
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000246
 _raw_spin_lock_bh+0x36/0x50
 dev_reset_queue+0x138/0x1b0
 dev_deactivate_many+0x778/0xda0
 __dev_close_many+0x180/0x6e0
 __dev_change_flags+0x3f5/0x820
 netif_change_flags+0x7c/0x1b0
 do_setlink+0xdd6/0x4670
 rtnl_newlink+0x146f/0x1c30
 rtnetlink_rcv_msg+0x802/0xc00
 netlink_rcv_skb+0x226/0x4a0
 netlink_unicast+0x7bd/0x940
 netlink_sendmsg+0x813/0xb40
 sock_sendmsg_nosec+0x13a/0x180
 ____sys_sendmsg+0x54e/0x850
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1b1/0x290
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8ae019e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8ae108d028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f8ae0426270 RCX: 00007f8ae019e159
RDX: 0000000004000804 RSI: 0000200000000080 RDI: 0000000000000007
RBP: 00007f8ae0235024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8ae0426308 R14: 00007f8ae0426270 R15: 00007fff04f4b9b8
 </TASK>
