[[0;32m OK [0m] Reached target Login Prompts.
[[0;32m OK [0m] Reached target Multi-User System.
[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.10.39' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 33.754567] device bond0 entered promiscuous mode
[ 33.767488] 8021q: adding VLAN 0 to HW filter on device macvlan0
[ 33.800445] BUG: spinlock recursion on CPU#0, syz-executor176/6332
[ 33.806945] lock: 0xffff8880a1608468, .magic: dead4ead, .owner: syz-executor176/6332, .owner_cpu: 0
[ 33.816225] CPU: 0 PID: 6332 Comm: syz-executor176 Not tainted 4.14.175-syzkaller #0
[ 33.824161] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 33.833552] Call Trace:
[ 33.836126] dump_stack+0x13e/0x194
[ 33.839755] do_raw_spin_lock+0x1cd/0x230
[ 33.843995] dev_uc_sync+0x10b/0x1c0
[ 33.847687] macvlan_set_mac_lists+0x55/0x110
[ 33.852161] ? macvlan_compute_filter+0x2c0/0x2c0
[ 33.856999] __dev_set_rx_mode+0x191/0x2a0
[ 33.861213] dev_uc_unsync+0x16c/0x1c0
[ 33.865103] bond_hw_addr_flush+0x5c/0xe0
[ 33.869229] ? bond_set_dev_addr.isra.0+0xb0/0xb0
[ 33.874051] bond_enslave+0x1e53/0x49e0
[ 33.878030] ? bond_update_slave_arr+0x6c0/0x6c0
[ 33.883722] ? rtmsg_ifinfo_event.part.0+0x9a/0xc0
[ 33.888636] ? rtmsg_ifinfo+0x64/0x80
[ 33.892420] ? __dev_notify_flags+0x110/0x210
[ 33.896892] ? dev_change_name+0x990/0x990
[ 33.901117] ? linkwatch_fire_event+0x3a/0x1a0
[ 33.905688] ? bond_update_slave_arr+0x6c0/0x6c0
[ 33.910421] do_set_master+0x19e/0x200
[ 33.914290] rtnl_newlink+0x1319/0x1720
[ 33.918257] ? trace_hardirqs_on+0x10/0x10
[ 33.922531] ? rtnl_link_unregister+0x1f0/0x1f0
[ 33.927198] ? lock_acquire+0x170/0x3f0
[ 33.931163] ? lock_acquire+0x170/0x3f0
[ 33.935117] ? rtnetlink_rcv_msg+0x31d/0xb10
[ 33.939510] ? __lock_is_held+0xad/0x140
[ 33.943563] ? lock_downgrade+0x6e0/0x6e0
[ 33.947688] ? rtnl_link_unregister+0x1f0/0x1f0
[ 33.952337] rtnetlink_rcv_msg+0x3be/0xb10
[ 33.956550] ? rtnl_bridge_getlink+0x7a0/0x7a0
[ 33.961114] ? save_trace+0x290/0x290
[ 33.964943] ? save_trace+0x290/0x290
[ 33.968730] netlink_rcv_skb+0x127/0x370
[ 33.972797] ? rtnl_bridge_getlink+0x7a0/0x7a0
[ 33.977358] ? netlink_ack+0x980/0x980
[ 33.981226] netlink_unicast+0x437/0x620
[ 33.985278] ? netlink_attachskb+0x600/0x600
[ 33.989667] netlink_sendmsg+0x733/0xbe0
[ 33.993707] ? netlink_unicast+0x620/0x620
[ 33.997952] ? SYSC_sendto+0x2b0/0x2b0
[ 34.001825] ? security_socket_sendmsg+0x83/0xb0
[ 34.006573] ? netlink_unicast+0x620/0x620
[ 34.010799] sock_sendmsg+0xc5/0x100
[ 34.014492] ___sys_sendmsg+0x70a/0x840
[ 34.018442] ? copy_msghdr_from_user+0x380/0x380
[ 34.023179] ? trace_hardirqs_on+0x10/0x10
[ 34.027398] ? save_trace+0x290/0x290
[ 34.031176] ? trace_hardirqs_on+0x10/0x10
[ 34.035389] ? find_held_lock+0x2d/0x110
[ 34.039442] ? __might_fault+0x104/0x1b0
[ 34.043486] ? lock_acquire+0x170/0x3f0
[ 34.047437] ? lock_downgrade+0x6e0/0x6e0
[ 34.051567] ? __might_fault+0x177/0x1b0
[ 34.055608] ? _copy_to_user+0x82/0xd0
[ 34.059474] ? __fget_light+0x16a/0x1f0
[ 34.063548] ? sockfd_lookup_light+0xb2/0x160
[ 34.068037] __sys_sendmsg+0xa3/0x120
[ 34.071849] ? SyS_shutdown+0x160/0x160
[ 34.075806] ? move_addr_to_kernel+0x60/0x60
[ 34.080195] SyS_sendmsg+0x27/0x40
[ 34.083748] ? __sys_sendmsg+0x120/0x120
[ 34.087821] do_syscall_64+0x1d5/0x640
[ 34.091700] entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 34.096881] RIP: 0033:0x440729
[ 34.100062] RSP: 002b:00007ffd5bd21658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 34.107747] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440729
[ 34.114999] RDX: 0000000000000800 RSI: 0000000020000080 RDI: 0000000000000004
[ 34.122262] RBP: 00000000006ca018 R08: 0000000000000004 R09: 00000000004002c8
[ 34.129523] R10: 000000000000000a R11: 0000000000000246 R12: 0000000000401fb0
[ 34.136772] R13: 0000000000402040 R14: 0000000000000000 R15: 0000000000000000