forked to background, child pid 3192
no interfaces have a carrier
[ 26.107878][ T3193] 8021q: adding VLAN 0 to HW filter on device bond0
[ 26.111213][ T3193] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK
syzkaller
syzkaller login: [ 76.157810][ T14] cfg80211: failed to load regulatory.db
Warning: Permanently added '10.128.0.118' (ECDSA) to the list of known hosts.
executing program
[ 716.156065][ T29] INFO: task kworker/0:0:6 blocked for more than 143 seconds.
[ 716.163734][ T29] Not tainted 5.19.0-rc3-syzkaller-00167-ge65af5403e46 #0
[ 716.171612][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 716.180505][ T29] task:kworker/0:0 state:D stack:28496 pid: 6 ppid: 2 flags:0x00004000
[ 716.189910][ T29] Workqueue: ipv6_addrconf addrconf_verify_work
[ 716.196323][ T29] Call Trace:
[ 716.199652][ T29]
[ 716.202621][ T29] __schedule+0xa00/0x4b50
[ 716.207217][ T29] ? find_held_lock+0x2d/0x110
[ 716.212050][ T29] ? wq_worker_sleeping+0x1e5/0x250
[ 716.217373][ T29] ? mark_held_locks+0x9f/0xe0
[ 716.222201][ T29] ? rwlock_bug.part.0+0x90/0x90
[ 716.227266][ T29] ? io_schedule_timeout+0x140/0x140
[ 716.232623][ T29] ? lockdep_hardirqs_on+0x79/0x100
[ 716.237955][ T29] schedule+0xd2/0x1f0
[ 716.242088][ T29] schedule_preempt_disabled+0xf/0x20
[ 716.247626][ T29] __mutex_lock+0xa70/0x1350
[ 716.252273][ T29] ? addrconf_verify_work+0xe/0x20
[ 716.257488][ T29] ? mutex_lock_io_nested+0x1190/0x1190
[ 716.263089][ T29] ? lock_release+0x780/0x780
[ 716.267930][ T29] addrconf_verify_work+0xe/0x20
[ 716.272921][ T29] process_one_work+0x996/0x1610
[ 716.277972][ T29] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 716.283407][ T29] ? rwlock_bug.part.0+0x90/0x90
[ 716.288466][ T29] ? _raw_spin_lock_irq+0x41/0x50
[ 716.293785][ T29] worker_thread+0x665/0x1080
[ 716.298588][ T29] ? process_one_work+0x1610/0x1610
[ 716.303843][ T29] kthread+0x2e9/0x3a0
[ 716.308060][ T29] ? kthread_complete_and_exit+0x40/0x40
[ 716.313788][ T29] ret_from_fork+0x1f/0x30
[ 716.318368][ T29]
[ 716.321524][ T29] INFO: task dhcpcd:3193 blocked for more than 143 seconds.
[ 716.328972][ T29] Not tainted 5.19.0-rc3-syzkaller-00167-ge65af5403e46 #0
[ 716.336769][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 716.345455][ T29] task:dhcpcd state:D stack:22728 pid: 3193 ppid: 3192 flags:0x00000000
[ 716.354766][ T29] Call Trace:
[ 716.358166][ T29]
[ 716.361129][ T29] __schedule+0xa00/0x4b50
[ 716.365571][ T29] ? __mutex_lock+0xa6b/0x1350
[ 716.370405][ T29] ? io_schedule_timeout+0x140/0x140
[ 716.375738][ T29] schedule+0xd2/0x1f0
[ 716.379896][ T29] schedule_preempt_disabled+0xf/0x20
[ 716.385318][ T29] __mutex_lock+0xa70/0x1350
[ 716.389988][ T29] ? __rhashtable_lookup.constprop.0+0x317/0x5e0
[ 716.396456][ T29] ? __netlink_dump_start+0x16a/0x900
[ 716.401866][ T29] ? mutex_lock_io_nested+0x1190/0x1190
[ 716.407504][ T29] ? __rhashtable_lookup.constprop.0+0x5e0/0x5e0
[ 716.413862][ T29] ? lock_downgrade+0x6e0/0x6e0
[ 716.418815][ T29] __netlink_dump_start+0x16a/0x900
[ 716.424039][ T29] rtnetlink_rcv_msg+0x73e/0xc90
[ 716.429358][ T29] ? rtnl_fill_ifinfo+0x4470/0x4470
[ 716.434584][ T29] ? rtnl_fdb_dump+0x9a0/0x9a0
[ 716.439438][ T29] ? rtnl_fill_ifinfo+0x4470/0x4470
[ 716.444693][ T29] netlink_rcv_skb+0x153/0x420
[ 716.449543][ T29] ? rtnl_fdb_dump+0x9a0/0x9a0
[ 716.454344][ T29] ? netlink_ack+0xa80/0xa80
[ 716.458999][ T29] ? netlink_deliver_tap+0x1a2/0xc40
[ 716.464305][ T29] ? netlink_deliver_tap+0x1b1/0xc40
[ 716.469665][ T29] netlink_unicast+0x543/0x7f0
[ 716.474451][ T29] ? netlink_attachskb+0x880/0x880
[ 716.479618][ T29] ? __virt_addr_valid+0x5d/0x2d0
[ 716.484766][ T29] ? __phys_addr_symbol+0x2c/0x70
[ 716.489872][ T29] ? __check_object_size+0x2de/0x700
[ 716.495177][ T29] netlink_sendmsg+0x917/0xe10
[ 716.500013][ T29] ? netlink_unicast+0x7f0/0x7f0
[ 716.504975][ T29] ? bpf_lsm_socket_sendmsg+0x5/0x10
[ 716.510335][ T29] ? netlink_unicast+0x7f0/0x7f0
[ 716.515309][ T29] sock_sendmsg+0xcf/0x120
[ 716.519852][ T29] __sys_sendto+0x21a/0x320
[ 716.524370][ T29] ? __ia32_sys_getpeername+0xb0/0xb0
[ 716.529836][ T29] ? __context_tracking_exit+0xb8/0xe0
[ 716.535333][ T29] __x64_sys_sendto+0xdd/0x1b0
[ 716.540161][ T29] ? lockdep_hardirqs_on+0x79/0x100
[ 716.545387][ T29] ? syscall_enter_from_user_mode+0x21/0x70
[ 716.551358][ T29] do_syscall_64+0x35/0xb0
[ 716.555826][ T29] entry_SYSCALL_64_after_hwframe+0x46/0xb0
[ 716.561918][ T29] RIP: 0033:0x7ff001e6f206
[ 716.566413][ T29] RSP: 002b:00007ffcbcf3ca48 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 716.574865][ T29] RAX: ffffffffffffffda RBX: 00007ffcbcf3db80 RCX: 00007ff001e6f206
[ 716.582909][ T29] RDX: 0000000000000014 RSI: 00007ffcbcf3daa0 RDI: 0000000000000018
[ 716.590918][ T29] RBP: 00007ffcbcf3db10 R08: 00007ffcbcf3da84 R09: 000000000000000c
[ 716.598951][ T29] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcbcf3daa0
[ 716.607003][ T29] R13: 00007ffcbcf3da84 R14: 0000000000000000 R15: 00007ffcbcf3ca50
[ 716.615007][ T29]
[ 716.618105][ T29]
[ 716.618105][ T29] Showing all locks held in the system:
[ 716.625836][ T29] 3 locks held by kworker/0:0/6:
[ 716.630826][ T29] #0: ffff888025af7938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610
[ 716.641865][ T29] #1: ffffc900000b7da8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610
[ 716.655024][ T29] #2: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20
[ 716.664538][ T29] 1 lock held by khungtaskd/29:
[ 716.669459][ T29] #0: ffffffff8bd86ba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260
[ 716.679497][ T29] 1 lock held by dhcpcd/3193:
[ 716.684188][ T29] #0: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: __netlink_dump_start+0x16a/0x900
[ 716.693973][ T29] 2 locks held by getty/3296:
[ 716.698751][ T29] #0: ffff888026367098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80
[ 716.708661][ T29] #1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0
[ 716.718910][ T29] 3 locks held by syz-executor179/3643:
[ 716.724555][ T29] #0: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3a/0x180
[ 716.733680][ T29] #1: ffff8880b9b39ed8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120
[ 716.743712][ T29] #2: ffff8880b9b277c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x176/0x4e0
[ 716.755221][ T29]
[ 716.757571][ T29] =============================================
[ 716.757571][ T29]
[ 716.766087][ T29] NMI backtrace for cpu 0
[ 716.770426][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 5.19.0-rc3-syzkaller-00167-ge65af5403e46 #0
[ 716.780315][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 716.790386][ T29] Call Trace:
[ 716.793658][ T29]
[ 716.796585][ T29] dump_stack_lvl+0xcd/0x134
[ 716.801286][ T29] nmi_cpu_backtrace.cold+0x47/0x144
[ 716.806598][ T29] ? lapic_can_unplug_cpu+0x80/0x80
[ 716.811811][ T29] nmi_trigger_cpumask_backtrace+0x1e6/0x230
[ 716.817846][ T29] watchdog+0xc22/0xf90
[ 716.822014][ T29] ? proc_dohung_task_timeout_secs+0x80/0x80
[ 716.828009][ T29] kthread+0x2e9/0x3a0
[ 716.832088][ T29] ? kthread_complete_and_exit+0x40/0x40
[ 716.837735][ T29] ret_from_fork+0x1f/0x30
[ 716.842179][ T29]
[ 716.845309][ T29] Sending NMI from CPU 0 to CPUs 1:
[ 716.850564][ C1] NMI backtrace for cpu 1
[ 716.850574][ C1] CPU: 1 PID: 8 Comm: kworker/u4:0 Not tainted 5.19.0-rc3-syzkaller-00167-ge65af5403e46 #0