syz-executor.0/5465:
[ 141.732076][ C1] 4 locks held by syz-executor.0/5468:
[ 141.737800][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 141.747797][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 141.758148][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 141.768014][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 141.778118][ C1] 2 locks held by sed/5467:
[ 141.782725][ C1]
[ 141.785058][ C1] =============================================
[ 141.785058][ C1]
[ 142.835773][ C1] DEBUG: holding rtnl_mutex for 6062 jiffies.
[ 142.841942][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 142.853759][ C1] Call Trace:
[ 142.857090][ C1]
[ 142.860041][ C1] __schedule+0x17e8/0x4a20
[ 142.864601][ C1] ? __pfx___schedule+0x10/0x10
[ 142.869522][ C1] ? __pfx_lock_release+0x10/0x10
[ 142.874569][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 142.880531][ C1] ? schedule+0x90/0x320
[ 142.884792][ C1] schedule+0x14b/0x320
[ 142.889001][ C1] synchronize_rcu_expedited+0x684/0x830
[ 142.894661][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 142.900888][ C1] ? mark_lock+0x9a/0x360
[ 142.905328][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 142.910682][ C1] ? __pfx___might_resched+0x10/0x10
[ 142.916017][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 142.922121][ C1] synchronize_rcu+0x11b/0x360
[ 142.926949][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 142.932253][ C1] ? lockdep_unlock+0x16a/0x300
[ 142.937151][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 142.942382][ C1] lockdep_unregister_key+0x4b7/0x540
[ 142.947911][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 142.953825][ C1] ? rcu_is_watching+0x15/0xb0
[ 142.958641][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 142.963306][ C1] __qdisc_destroy+0x165/0x410
[ 142.968136][ C1] taprio_attach+0x24e/0x390
[ 142.972755][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 142.977924][ C1] qdisc_graft+0x128a/0x1580
[ 142.982536][ C1] ? qdisc_graft+0x301/0x1580
[ 142.987270][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 142.992226][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 142.997307][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 143.002199][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 143.007558][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 143.012860][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 143.017939][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 143.023510][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 143.029024][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 143.035028][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 143.041497][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 143.046987][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 143.052316][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 143.057757][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 143.063072][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 143.068418][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 143.074166][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 143.079345][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 143.084584][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 143.089761][ C1] ? ref_tracker_free+0x643/0x7e0
[ 143.094842][ C1] netlink_rcv_skb+0x1e3/0x430
[ 143.099717][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 143.105214][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 143.110714][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 143.116082][ C1] netlink_unicast+0x7ea/0x980
[ 143.120888][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 143.126324][ C1] ? __virt_addr_valid+0x183/0x520
[ 143.131472][ C1] ? __check_object_size+0x49c/0x900
[ 143.136807][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 143.141942][ C1] netlink_sendmsg+0x8db/0xcb0
[ 143.146789][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 143.152106][ C1] ? __import_iovec+0x536/0x820
[ 143.157107][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 143.162068][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 143.167421][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 143.172907][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 143.178260][ C1] __sock_sendmsg+0x221/0x270
[ 143.183057][ C1] ____sys_sendmsg+0x525/0x7d0
[ 143.187883][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 143.193205][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 143.197847][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 143.203024][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 143.209504][ C1] ? do_syscall_64+0x100/0x230
[ 143.214288][ C1] ? do_syscall_64+0xb6/0x230
[ 143.219109][ C1] do_syscall_64+0xf3/0x230
[ 143.223720][ C1] ? clear_bhb_loop+0x35/0x90
[ 143.228459][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 143.234392][ C1] RIP: 0033:0x7f33e447dda9
[ 143.238862][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 143.247326][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 143.255405][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 143.263617][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 143.271725][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 143.279829][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 143.287948][ C1]
[ 143.290975][ C1] DEBUG: waiting rtnl_mutex for 6106 jiffies.
[ 143.297086][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 143.307399][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 143.313409][ C1] Call Trace:
[ 143.316724][ C1]
[ 143.319665][ C1] __schedule+0x17e8/0x4a20
[ 143.324302][ C1] ? __pfx___schedule+0x10/0x10
[ 143.329211][ C1] ? __pfx_lock_release+0x10/0x10
[ 143.334256][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 143.339768][ C1] ? kthread_data+0x52/0xd0
[ 143.344286][ C1] ? schedule+0x90/0x320
[ 143.348581][ C1] ? wq_worker_sleeping+0x66/0x240
[ 143.354085][ C1] ? schedule+0x90/0x320
[ 143.358447][ C1] schedule+0x14b/0x320
[ 143.362911][ C1] schedule_preempt_disabled+0x13/0x30
[ 143.368523][ C1] __mutex_lock+0x6a4/0xd70
[ 143.373055][ C1] ? mark_lock+0x9a/0x360
[ 143.377476][ C1] ? __mutex_lock+0x527/0xd70
[ 143.382191][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 143.387372][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 143.392434][ C1] ? rtnl_lock+0xe7/0x130
[ 143.396837][ C1] addrconf_dad_work+0xd0/0x16f0
[ 143.401812][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 143.407334][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 143.413785][ C1] ? process_scheduled_works+0x945/0x1830
[ 143.419655][ C1] process_scheduled_works+0xa2c/0x1830
[ 143.425252][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 143.431332][ C1] ? assign_work+0x364/0x3d0
[ 143.435982][ C1] worker_thread+0x86d/0xd50
[ 143.440609][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 143.446565][ C1] ? __kthread_parkme+0x169/0x1d0
[ 143.451616][ C1] ? __pfx_worker_thread+0x10/0x10
[ 143.456835][ C1] kthread+0x2f0/0x390
[ 143.460989][ C1] ? __pfx_worker_thread+0x10/0x10
[ 143.466229][ C1] ? __pfx_kthread+0x10/0x10
[ 143.470858][ C1] ret_from_fork+0x4b/0x80
[ 143.475365][ C1] ? __pfx_kthread+0x10/0x10
[ 143.480019][ C1] ret_from_fork_asm+0x1a/0x30
[ 143.484910][ C1]
[ 143.488062][ C1]
[ 143.488062][ C1] Showing all locks held in the system:
[ 143.495834][ C1] 3 locks held by kworker/u8:4/61:
[ 143.500960][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 143.512619][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 143.525551][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 143.535100][ C1] 2 locks held by getty/4842:
[ 143.539831][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 143.549675][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 143.559947][ C1] 3 locks held by kworker/1:3/5108:
[ 143.565160][ C1] 2 locks held by syz-executor.0/5465:
[ 143.570663][ C1] 4 locks held by syz-executor.0/5468:
[ 143.576166][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 143.585820][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 143.596086][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 143.605923][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 143.616029][ C1] 1 lock held by sed/5467:
[ 143.620454][ C1]
[ 143.622786][ C1] =============================================
[ 143.622786][ C1]
[ 144.675780][ C1] DEBUG: holding rtnl_mutex for 6246 jiffies.
[ 144.681921][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 144.693823][ C1] Call Trace:
[ 144.697195][ C1]
[ 144.700159][ C1] __schedule+0x17e8/0x4a20
[ 144.704719][ C1] ? __pfx___schedule+0x10/0x10
[ 144.709630][ C1] ? __pfx_lock_release+0x10/0x10
[ 144.714763][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 144.720722][ C1] ? schedule+0x90/0x320
[ 144.724991][ C1] schedule+0x14b/0x320
[ 144.729215][ C1] synchronize_rcu_expedited+0x684/0x830
[ 144.734910][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 144.741292][ C1] ? mark_lock+0x9a/0x360
[ 144.745659][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 144.751016][ C1] ? __pfx___might_resched+0x10/0x10
[ 144.756353][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 144.762570][ C1] synchronize_rcu+0x11b/0x360
[ 144.767462][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 144.772862][ C1] ? lockdep_unlock+0x16a/0x300
[ 144.777770][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 144.783002][ C1] lockdep_unregister_key+0x4b7/0x540
[ 144.788432][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 144.794354][ C1] ? rcu_is_watching+0x15/0xb0
[ 144.799218][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 144.803840][ C1] __qdisc_destroy+0x165/0x410
[ 144.808837][ C1] taprio_attach+0x24e/0x390
[ 144.813459][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 144.818645][ C1] qdisc_graft+0x128a/0x1580
[ 144.823261][ C1] ? qdisc_graft+0x301/0x1580
[ 144.828029][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 144.833017][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 144.838107][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 144.843089][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 144.848471][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 144.853876][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 144.859112][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 144.864543][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 144.870137][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 144.876198][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 144.882553][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 144.887979][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 144.893216][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 144.898735][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 144.904138][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 144.909335][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 144.915092][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 144.920255][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 144.925487][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 144.930836][ C1] ? ref_tracker_free+0x643/0x7e0
[ 144.935921][ C1] netlink_rcv_skb+0x1e3/0x430
[ 144.940708][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 144.946225][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 144.951564][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 144.957078][ C1] netlink_unicast+0x7ea/0x980
[ 144.961874][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 144.967201][ C1] ? __virt_addr_valid+0x183/0x520
[ 144.972425][ C1] ? __check_object_size+0x49c/0x900
[ 144.977771][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 144.982903][ C1] netlink_sendmsg+0x8db/0xcb0
[ 144.987740][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 144.993048][ C1] ? __import_iovec+0x536/0x820
[ 144.997946][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 145.002912][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 145.008253][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 145.013737][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 145.019076][ C1] __sock_sendmsg+0x221/0x270
[ 145.023799][ C1] ____sys_sendmsg+0x525/0x7d0
[ 145.028629][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 145.033986][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 145.038693][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 145.043967][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 145.050364][ C1] ? do_syscall_64+0x100/0x230
[ 145.055156][ C1] ? do_syscall_64+0xb6/0x230
[ 145.059887][ C1] do_syscall_64+0xf3/0x230
[ 145.064415][ C1] ? clear_bhb_loop+0x35/0x90
[ 145.069160][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 145.075083][ C1] RIP: 0033:0x7f33e447dda9
[ 145.079544][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 145.088018][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 145.096041][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 145.104025][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 145.112043][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 145.120091][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 145.128164][ C1]
[ 145.131199][ C1] DEBUG: waiting rtnl_mutex for 6290 jiffies.
[ 145.137306][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 145.147534][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 145.153554][ C1] Call Trace:
[ 145.156885][ C1]
[ 145.159927][ C1] __schedule+0x17e8/0x4a20
[ 145.164737][ C1] ? __pfx___schedule+0x10/0x10
[ 145.169756][ C1] ? __pfx_lock_release+0x10/0x10
[ 145.174877][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 145.180396][ C1] ? kthread_data+0x52/0xd0
[ 145.184931][ C1] ? schedule+0x90/0x320
[ 145.189228][ C1] ? wq_worker_sleeping+0x66/0x240
[ 145.194624][ C1] ? schedule+0x90/0x320
[ 145.198918][ C1] schedule+0x14b/0x320
[ 145.203098][ C1] schedule_preempt_disabled+0x13/0x30
[ 145.208695][ C1] __mutex_lock+0x6a4/0xd70
[ 145.213345][ C1] ? mark_lock+0x9a/0x360
[ 145.217749][ C1] ? __mutex_lock+0x527/0xd70
[ 145.222450][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 145.227701][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 145.232786][ C1] ? rtnl_lock+0xe7/0x130
[ 145.237193][ C1] addrconf_dad_work+0xd0/0x16f0
[ 145.242175][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 145.247693][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 145.254320][ C1] ? process_scheduled_works+0x945/0x1830
[ 145.260098][ C1] process_scheduled_works+0xa2c/0x1830
[ 145.265829][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 145.271845][ C1] ? assign_work+0x364/0x3d0
[ 145.276498][ C1] worker_thread+0x86d/0xd50
[ 145.281134][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 145.287083][ C1] ? __kthread_parkme+0x169/0x1d0
[ 145.292132][ C1] ? __pfx_worker_thread+0x10/0x10
[ 145.297295][ C1] kthread+0x2f0/0x390
[ 145.301384][ C1] ? __pfx_worker_thread+0x10/0x10
[ 145.306553][ C1] ? __pfx_kthread+0x10/0x10
[ 145.311165][ C1] ret_from_fork+0x4b/0x80
[ 145.315598][ C1] ? __pfx_kthread+0x10/0x10
[ 145.320239][ C1] ret_from_fork_asm+0x1a/0x30
[ 145.325045][ C1]
[ 145.328118][ C1]
[ 145.328118][ C1] Showing all locks held in the system:
[ 145.335901][ C1] 3 locks held by kworker/u8:4/61:
[ 145.341131][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 145.352852][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 145.365722][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 145.375241][ C1] 2 locks held by getty/4842:
[ 145.379960][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 145.389801][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 145.399977][ C1] 3 locks held by kworker/1:3/5108:
[ 145.405193][ C1] 2 locks held by syz-executor.0/5465:
[ 145.410699][ C1] 4 locks held by syz-executor.0/5468:
[ 145.416194][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 145.425850][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 145.436046][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 145.445875][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 145.455848][ C1] 1 lock held by sed/5467:
[ 145.460276][ C1]
[ 145.462614][ C1] =============================================
[ 145.462614][ C1]
[ 146.515765][ C1] DEBUG: holding rtnl_mutex for 6430 jiffies.
[ 146.521894][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 146.533809][ C1] Call Trace:
[ 146.537135][ C1]
[ 146.540084][ C1] __schedule+0x17e8/0x4a20
[ 146.544727][ C1] ? __pfx___schedule+0x10/0x10
[ 146.550072][ C1] ? __pfx_lock_release+0x10/0x10
[ 146.555148][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 146.561189][ C1] ? schedule+0x90/0x320
[ 146.565462][ C1] schedule+0x14b/0x320
[ 146.569687][ C1] synchronize_rcu_expedited+0x684/0x830
[ 146.575363][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 146.581597][ C1] ? mark_lock+0x9a/0x360
[ 146.586080][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 146.591416][ C1] ? __pfx___might_resched+0x10/0x10
[ 146.596918][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 146.603161][ C1] synchronize_rcu+0x11b/0x360
[ 146.608035][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 146.613353][ C1] ? lockdep_unlock+0x16a/0x300
[ 146.618265][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 146.623499][ C1] lockdep_unregister_key+0x4b7/0x540
[ 146.628947][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 146.634894][ C1] ? rcu_is_watching+0x15/0xb0
[ 146.639766][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 146.644396][ C1] __qdisc_destroy+0x165/0x410
[ 146.649329][ C1] taprio_attach+0x24e/0x390
[ 146.654459][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 146.659687][ C1] qdisc_graft+0x128a/0x1580
[ 146.664413][ C1] ? qdisc_graft+0x301/0x1580
[ 146.669223][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 146.674197][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 146.679286][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 146.684177][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 146.689556][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 146.694864][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 146.699965][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 146.705191][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 146.710886][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 146.717011][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 146.723394][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 146.728911][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 146.734155][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 146.739765][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 146.745083][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 146.750603][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 146.756377][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 146.761593][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 146.766857][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 146.772008][ C1] ? ref_tracker_free+0x643/0x7e0
[ 146.777102][ C1] netlink_rcv_skb+0x1e3/0x430
[ 146.781900][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 146.787588][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 146.792923][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 146.798264][ C1] netlink_unicast+0x7ea/0x980
[ 146.803319][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 146.808740][ C1] ? __virt_addr_valid+0x183/0x520
[ 146.813892][ C1] ? __check_object_size+0x49c/0x900
[ 146.819240][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 146.824378][ C1] netlink_sendmsg+0x8db/0xcb0
[ 146.829352][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 146.834702][ C1] ? __import_iovec+0x536/0x820
[ 146.839643][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 146.844697][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 146.850101][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 146.855608][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 146.860965][ C1] __sock_sendmsg+0x221/0x270
[ 146.865806][ C1] ____sys_sendmsg+0x525/0x7d0
[ 146.870789][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 146.876151][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 146.880852][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 146.886063][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 146.892502][ C1] ? do_syscall_64+0x100/0x230
[ 146.897318][ C1] ? do_syscall_64+0xb6/0x230
[ 146.902107][ C1] do_syscall_64+0xf3/0x230
[ 146.906657][ C1] ? clear_bhb_loop+0x35/0x90
[ 146.911362][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 146.917303][ C1] RIP: 0033:0x7f33e447dda9
[ 146.921843][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 146.930357][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 146.938391][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 146.946413][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 146.954603][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 146.962809][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 146.971028][ C1]
[ 146.974060][ C1] DEBUG: waiting rtnl_mutex for 6474 jiffies.
[ 146.980168][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 146.990391][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 146.996528][ C1] Call Trace:
[ 146.999837][ C1]
[ 147.002784][ C1] __schedule+0x17e8/0x4a20
[ 147.007367][ C1] ? __pfx___schedule+0x10/0x10
[ 147.012245][ C1] ? __pfx_lock_release+0x10/0x10
[ 147.017330][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 147.022824][ C1] ? kthread_data+0x52/0xd0
[ 147.027383][ C1] ? schedule+0x90/0x320
[ 147.031653][ C1] ? wq_worker_sleeping+0x66/0x240
[ 147.036825][ C1] ? schedule+0x90/0x320
[ 147.041096][ C1] schedule+0x14b/0x320
[ 147.045283][ C1] schedule_preempt_disabled+0x13/0x30
[ 147.050895][ C1] __mutex_lock+0x6a4/0xd70
[ 147.055537][ C1] ? mark_lock+0x9a/0x360
[ 147.060021][ C1] ? __mutex_lock+0x527/0xd70
[ 147.064892][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 147.070071][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 147.075135][ C1] ? rtnl_lock+0xe7/0x130
[ 147.079519][ C1] addrconf_dad_work+0xd0/0x16f0
[ 147.084575][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 147.090088][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 147.096490][ C1] ? process_scheduled_works+0x945/0x1830
[ 147.102229][ C1] process_scheduled_works+0xa2c/0x1830
[ 147.107855][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 147.113867][ C1] ? assign_work+0x364/0x3d0
[ 147.118520][ C1] worker_thread+0x86d/0xd50
[ 147.123149][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 147.129191][ C1] ? __kthread_parkme+0x169/0x1d0
[ 147.134238][ C1] ? __pfx_worker_thread+0x10/0x10
[ 147.139436][ C1] kthread+0x2f0/0x390
[ 147.143618][ C1] ? __pfx_worker_thread+0x10/0x10
[ 147.148783][ C1] ? __pfx_kthread+0x10/0x10
[ 147.153568][ C1] ret_from_fork+0x4b/0x80
[ 147.158041][ C1] ? __pfx_kthread+0x10/0x10
[ 147.162657][ C1] ret_from_fork_asm+0x1a/0x30
[ 147.167496][ C1]
[ 147.170529][ C1]
[ 147.170529][ C1] Showing all locks held in the system:
[ 147.178351][ C1] 3 locks held by kworker/u8:4/61:
[ 147.183494][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 147.195182][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 147.208149][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 147.217670][ C1] 2 locks held by getty/4842:
[ 147.222361][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 147.232308][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 147.242752][ C1] 3 locks held by kworker/1:3/5108:
[ 147.248022][ C1] 2 locks held by syz-executor.0/5465:
[ 147.253491][ C1] 4 locks held by syz-executor.0/5468:
[ 147.259005][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 147.268725][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 147.278919][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 147.288767][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 147.298702][ C1] 2 locks held by sed/5467:
[ 147.303349][ C1]
[ 147.305702][ C1] =============================================
[ 147.305702][ C1]
[ 148.355798][ C1] DEBUG: holding rtnl_mutex for 6614 jiffies.
[ 148.362018][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 148.373932][ C1] Call Trace:
[ 148.377273][ C1]
[ 148.380223][ C1] __schedule+0x17e8/0x4a20
[ 148.384877][ C1] ? __pfx___schedule+0x10/0x10
[ 148.390056][ C1] ? __pfx_lock_release+0x10/0x10
[ 148.395117][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 148.401160][ C1] ? schedule+0x90/0x320
[ 148.405622][ C1] schedule+0x14b/0x320
[ 148.409866][ C1] synchronize_rcu_expedited+0x684/0x830
[ 148.415532][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 148.421822][ C1] ? mark_lock+0x9a/0x360
[ 148.426233][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 148.431572][ C1] ? __pfx___might_resched+0x10/0x10
[ 148.437066][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 148.443188][ C1] synchronize_rcu+0x11b/0x360
[ 148.448044][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 148.453396][ C1] ? lockdep_unlock+0x16a/0x300
[ 148.458391][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 148.463683][ C1] lockdep_unregister_key+0x4b7/0x540
[ 148.469215][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 148.475164][ C1] ? rcu_is_watching+0x15/0xb0
[ 148.480003][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 148.484630][ C1] __qdisc_destroy+0x165/0x410
[ 148.489528][ C1] taprio_attach+0x24e/0x390
[ 148.494166][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 148.500011][ C1] qdisc_graft+0x128a/0x1580
[ 148.504730][ C1] ? qdisc_graft+0x301/0x1580
[ 148.509624][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 148.514603][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 148.519710][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 148.524614][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 148.529987][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 148.535380][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 148.540624][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 148.545967][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 148.551473][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 148.557584][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 148.563957][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 148.569399][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 148.574670][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 148.580107][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 148.585445][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 148.590664][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 148.596612][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 148.601774][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 148.607071][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 148.612324][ C1] ? ref_tracker_free+0x643/0x7e0
[ 148.617427][ C1] netlink_rcv_skb+0x1e3/0x430
[ 148.622226][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 148.627770][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 148.633234][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 148.638490][ C1] netlink_unicast+0x7ea/0x980
[ 148.643465][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 148.649106][ C1] ? __virt_addr_valid+0x183/0x520
[ 148.654440][ C1] ? __check_object_size+0x49c/0x900
[ 148.659881][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 148.665027][ C1] netlink_sendmsg+0x8db/0xcb0
[ 148.670074][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 148.675388][ C1] ? __import_iovec+0x536/0x820
[ 148.680370][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 148.685466][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 148.690899][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 148.696455][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 148.701827][ C1] __sock_sendmsg+0x221/0x270
[ 148.706576][ C1] ____sys_sendmsg+0x525/0x7d0
[ 148.711383][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 148.716747][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 148.721403][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 148.726678][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 148.733039][ C1] ? do_syscall_64+0x100/0x230
[ 148.737870][ C1] ? do_syscall_64+0xb6/0x230
[ 148.742666][ C1] do_syscall_64+0xf3/0x230
[ 148.747321][ C1] ? clear_bhb_loop+0x35/0x90
[ 148.752112][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 148.758073][ C1] RIP: 0033:0x7f33e447dda9
[ 148.762507][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 148.771133][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 148.779214][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 148.787255][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 148.795515][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 148.803974][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 148.812019][ C1]
[ 148.815057][ C1] DEBUG: waiting rtnl_mutex for 6658 jiffies.
[ 148.821161][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 148.831389][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 148.837440][ C1] Call Trace:
[ 148.840730][ C1]
[ 148.843677][ C1] __schedule+0x17e8/0x4a20
[ 148.848290][ C1] ? __pfx___schedule+0x10/0x10
[ 148.853175][ C1] ? __pfx_lock_release+0x10/0x10
[ 148.858262][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 148.863844][ C1] ? kthread_data+0x52/0xd0
[ 148.868437][ C1] ? schedule+0x90/0x320
[ 148.872704][ C1] ? wq_worker_sleeping+0x66/0x240
[ 148.878057][ C1] ? schedule+0x90/0x320
[ 148.882322][ C1] schedule+0x14b/0x320
[ 148.886536][ C1] schedule_preempt_disabled+0x13/0x30
[ 148.892021][ C1] __mutex_lock+0x6a4/0xd70
[ 148.896587][ C1] ? mark_lock+0x9a/0x360
[ 148.900951][ C1] ? __mutex_lock+0x527/0xd70
[ 148.905653][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 148.910858][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 148.915967][ C1] ? rtnl_lock+0xe7/0x130
[ 148.920417][ C1] addrconf_dad_work+0xd0/0x16f0
[ 148.925399][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 148.930943][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 148.937353][ C1] ? process_scheduled_works+0x945/0x1830
[ 148.943181][ C1] process_scheduled_works+0xa2c/0x1830
[ 148.948834][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 148.954854][ C1] ? assign_work+0x364/0x3d0
[ 148.959519][ C1] worker_thread+0x86d/0xd50
[ 148.964159][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 148.970125][ C1] ? __kthread_parkme+0x169/0x1d0
[ 148.975185][ C1] ? __pfx_worker_thread+0x10/0x10
[ 148.980399][ C1] kthread+0x2f0/0x390
[ 148.984755][ C1] ? __pfx_worker_thread+0x10/0x10
[ 148.989925][ C1] ? __pfx_kthread+0x10/0x10
[ 148.994542][ C1] ret_from_fork+0x4b/0x80
[ 148.999022][ C1] ? __pfx_kthread+0x10/0x10
[ 149.003644][ C1] ret_from_fork_asm+0x1a/0x30
[ 149.008488][ C1]
[ 149.011529][ C1]
[ 149.011529][ C1] Showing all locks held in the system:
[ 149.019385][ C1] 3 locks held by kworker/u8:4/61:
[ 149.024594][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 149.036273][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 149.049272][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 149.058895][ C1] 2 locks held by getty/4842:
[ 149.064100][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 149.073997][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 149.084195][ C1] 3 locks held by kworker/1:3/5108:
[ 149.089443][ C1] 2 locks held by syz-executor.0/5465:
[ 149.095003][ C1] 4 locks held by syz-executor.0/5468:
[ 149.100499][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 149.110160][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 149.120343][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 149.130437][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 149.140358][ C1] 1 lock held by sed/5467:
[ 149.144780][ C1]
[ 149.147147][ C1] =============================================
[ 149.147147][ C1]
[ 150.195764][ C1] DEBUG: holding rtnl_mutex for 6798 jiffies.
[ 150.202065][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 150.213881][ C1] Call Trace:
[ 150.217296][ C1]
[ 150.220246][ C1] __schedule+0x17e8/0x4a20
[ 150.224797][ C1] ? __pfx___schedule+0x10/0x10
[ 150.229711][ C1] ? __pfx_lock_release+0x10/0x10
[ 150.234753][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 150.240806][ C1] ? schedule+0x90/0x320
[ 150.245320][ C1] schedule+0x14b/0x320
[ 150.249552][ C1] synchronize_rcu_expedited+0x684/0x830
[ 150.255214][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 150.261525][ C1] ? mark_lock+0x9a/0x360
[ 150.266083][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 150.271397][ C1] ? __pfx___might_resched+0x10/0x10
[ 150.276909][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 150.283099][ C1] synchronize_rcu+0x11b/0x360
[ 150.287982][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 150.293318][ C1] ? lockdep_unlock+0x16a/0x300
[ 150.298321][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 150.303585][ C1] lockdep_unregister_key+0x4b7/0x540
[ 150.309157][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 150.315092][ C1] ? rcu_is_watching+0x15/0xb0
[ 150.319921][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 150.324626][ C1] __qdisc_destroy+0x165/0x410
[ 150.329541][ C1] taprio_attach+0x24e/0x390
[ 150.334170][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 150.339346][ C1] qdisc_graft+0x128a/0x1580
[ 150.344048][ C1] ? qdisc_graft+0x301/0x1580
[ 150.348793][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 150.353755][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 150.358851][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 150.363743][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 150.369109][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 150.374439][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 150.379589][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 150.384852][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 150.390431][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 150.396479][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 150.402850][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 150.408275][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 150.413590][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 150.419018][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 150.424346][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 150.429516][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 150.435271][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 150.440611][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 150.445975][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 150.451813][ C1] ? ref_tracker_free+0x643/0x7e0
[ 150.456898][ C1] netlink_rcv_skb+0x1e3/0x430
[ 150.461697][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 150.467224][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 150.472559][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 150.477823][ C1] netlink_unicast+0x7ea/0x980
[ 150.482708][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 150.488055][ C1] ? __virt_addr_valid+0x183/0x520
[ 150.493278][ C1] ? __check_object_size+0x49c/0x900
[ 150.498664][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 150.503801][ C1] netlink_sendmsg+0x8db/0xcb0
[ 150.508639][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 150.514055][ C1] ? __import_iovec+0x536/0x820
[ 150.519874][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 150.524840][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 150.530188][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 150.535680][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 150.541103][ C1] __sock_sendmsg+0x221/0x270
[ 150.545941][ C1] ____sys_sendmsg+0x525/0x7d0
[ 150.550918][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 150.556330][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 150.560982][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 150.566322][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 150.572681][ C1] ? do_syscall_64+0x100/0x230
[ 150.577600][ C1] ? do_syscall_64+0xb6/0x230
[ 150.582296][ C1] do_syscall_64+0xf3/0x230
[ 150.586861][ C1] ? clear_bhb_loop+0x35/0x90
[ 150.591585][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 150.597529][ C1] RIP: 0033:0x7f33e447dda9
[ 150.601956][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 150.610527][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 150.618549][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 150.626566][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 150.634551][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 150.642658][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 150.650805][ C1]
[ 150.653845][ C1] DEBUG: waiting rtnl_mutex for 6842 jiffies.
[ 150.659955][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 150.670269][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 150.676330][ C1] Call Trace:
[ 150.679629][ C1]
[ 150.682587][ C1] __schedule+0x17e8/0x4a20
[ 150.687170][ C1] ? __pfx___schedule+0x10/0x10
[ 150.692044][ C1] ? __pfx_lock_release+0x10/0x10
[ 150.697222][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 150.702749][ C1] ? kthread_data+0x52/0xd0
[ 150.707361][ C1] ? schedule+0x90/0x320
[ 150.711631][ C1] ? wq_worker_sleeping+0x66/0x240
[ 150.716898][ C1] ? schedule+0x90/0x320
[ 150.721170][ C1] schedule+0x14b/0x320
[ 150.725360][ C1] schedule_preempt_disabled+0x13/0x30
[ 150.731020][ C1] __mutex_lock+0x6a4/0xd70
[ 150.735613][ C1] ? mark_lock+0x9a/0x360
[ 150.740015][ C1] ? __mutex_lock+0x527/0xd70
[ 150.744729][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 150.750126][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 150.755244][ C1] ? rtnl_lock+0xe7/0x130
[ 150.759706][ C1] addrconf_dad_work+0xd0/0x16f0
[ 150.764688][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 150.770382][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 150.776782][ C1] ? process_scheduled_works+0x945/0x1830
[ 150.782713][ C1] process_scheduled_works+0xa2c/0x1830
[ 150.788339][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 150.794361][ C1] ? assign_work+0x364/0x3d0
[ 150.799012][ C1] worker_thread+0x86d/0xd50
[ 150.803652][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 150.809691][ C1] ? __kthread_parkme+0x169/0x1d0
[ 150.814943][ C1] ? __pfx_worker_thread+0x10/0x10
[ 150.820281][ C1] kthread+0x2f0/0x390
[ 150.824424][ C1] ? __pfx_worker_thread+0x10/0x10
[ 150.829602][ C1] ? __pfx_kthread+0x10/0x10
[ 150.834219][ C1] ret_from_fork+0x4b/0x80
[ 150.838692][ C1] ? __pfx_kthread+0x10/0x10
[ 150.843312][ C1] ret_from_fork_asm+0x1a/0x30
[ 150.848159][ C1]
[ 150.851196][ C1]
[ 150.851196][ C1] Showing all locks held in the system:
[ 150.859020][ C1] 3 locks held by kworker/u8:4/61:
[ 150.864182][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 150.875927][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 150.889214][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 150.898803][ C1] 2 locks held by getty/4842:
[ 150.903622][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 150.913480][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 150.923701][ C1] 3 locks held by kworker/1:3/5108:
[ 150.928951][ C1] 2 locks held by syz-executor.0/5465:
[ 150.934507][ C1] 4 locks held by syz-executor.0/5468:
[ 150.940012][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 150.949877][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 150.960082][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 150.969926][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 150.979939][ C1] 1 lock held by sed/5467:
[ 150.984453][ C1]
[ 150.986870][ C1] =============================================
[ 150.986870][ C1]
[ 152.035775][ C1] DEBUG: holding rtnl_mutex for 6982 jiffies.
[ 152.041911][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 152.053753][ C1] Call Trace:
[ 152.057088][ C1]
[ 152.060043][ C1] __schedule+0x17e8/0x4a20
[ 152.064684][ C1] ? __pfx___schedule+0x10/0x10
[ 152.069604][ C1] ? __pfx_lock_release+0x10/0x10
[ 152.074649][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 152.080616][ C1] ? schedule+0x90/0x320
[ 152.084889][ C1] schedule+0x14b/0x320
[ 152.089102][ C1] synchronize_rcu_expedited+0x684/0x830
[ 152.094764][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 152.100987][ C1] ? mark_lock+0x9a/0x360
[ 152.105338][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 152.110693][ C1] ? __pfx___might_resched+0x10/0x10
[ 152.116037][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 152.122148][ C1] synchronize_rcu+0x11b/0x360
[ 152.126970][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 152.132273][ C1] ? lockdep_unlock+0x16a/0x300
[ 152.137167][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 152.142404][ C1] lockdep_unregister_key+0x4b7/0x540
[ 152.147862][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 152.153782][ C1] ? rcu_is_watching+0x15/0xb0
[ 152.158606][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 152.163227][ C1] __qdisc_destroy+0x165/0x410
[ 152.168110][ C1] taprio_attach+0x24e/0x390
[ 152.172754][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 152.177949][ C1] qdisc_graft+0x128a/0x1580
[ 152.182567][ C1] ? qdisc_graft+0x301/0x1580
[ 152.187308][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 152.192269][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 152.197353][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 152.202275][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 152.207688][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 152.212997][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 152.218175][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 152.223436][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 152.229053][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 152.235058][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 152.241446][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 152.246871][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 152.252101][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 152.257536][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 152.262926][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 152.268245][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 152.274016][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 152.279198][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 152.284436][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 152.289614][ C1] ? ref_tracker_free+0x643/0x7e0
[ 152.294677][ C1] netlink_rcv_skb+0x1e3/0x430
[ 152.299513][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 152.305002][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 152.310368][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 152.315592][ C1] netlink_unicast+0x7ea/0x980
[ 152.320419][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 152.325768][ C1] ? __virt_addr_valid+0x183/0x520
[ 152.330907][ C1] ? __check_object_size+0x49c/0x900
[ 152.336244][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 152.341380][ C1] netlink_sendmsg+0x8db/0xcb0
[ 152.346227][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 152.351542][ C1] ? __import_iovec+0x536/0x820
[ 152.356485][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 152.361506][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 152.366857][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 152.372353][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 152.377721][ C1] __sock_sendmsg+0x221/0x270
[ 152.382447][ C1] ____sys_sendmsg+0x525/0x7d0
[ 152.387288][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 152.392703][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 152.397359][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 152.402553][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 152.408940][ C1] ? do_syscall_64+0x100/0x230
[ 152.413816][ C1] ? do_syscall_64+0xb6/0x230
[ 152.418562][ C1] do_syscall_64+0xf3/0x230
[ 152.423096][ C1] ? clear_bhb_loop+0x35/0x90
[ 152.428010][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 152.433927][ C1] RIP: 0033:0x7f33e447dda9
[ 152.438395][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 152.446897][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 152.454888][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 152.462966][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 152.471058][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 152.479164][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 152.487234][ C1]
[ 152.490360][ C1] DEBUG: waiting rtnl_mutex for 7026 jiffies.
[ 152.496497][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 152.506729][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 152.512770][ C1] Call Trace:
[ 152.516163][ C1]
[ 152.519124][ C1] __schedule+0x17e8/0x4a20
[ 152.523716][ C1] ? __pfx___schedule+0x10/0x10
[ 152.528632][ C1] ? __pfx_lock_release+0x10/0x10
[ 152.533681][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 152.539375][ C1] ? kthread_data+0x52/0xd0
[ 152.543945][ C1] ? schedule+0x90/0x320
[ 152.548306][ C1] ? wq_worker_sleeping+0x66/0x240
[ 152.553550][ C1] ? schedule+0x90/0x320
[ 152.557859][ C1] schedule+0x14b/0x320
[ 152.562045][ C1] schedule_preempt_disabled+0x13/0x30
[ 152.567569][ C1] __mutex_lock+0x6a4/0xd70
[ 152.572093][ C1] ? mark_lock+0x9a/0x360
[ 152.576484][ C1] ? __mutex_lock+0x527/0xd70
[ 152.581206][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 152.586440][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 152.591517][ C1] ? rtnl_lock+0xe7/0x130
[ 152.595913][ C1] addrconf_dad_work+0xd0/0x16f0
[ 152.600892][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 152.606406][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 152.612781][ C1] ? process_scheduled_works+0x945/0x1830
[ 152.618555][ C1] process_scheduled_works+0xa2c/0x1830
[ 152.624245][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 152.630294][ C1] ? assign_work+0x364/0x3d0
[ 152.634946][ C1] worker_thread+0x86d/0xd50
[ 152.639609][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 152.645623][ C1] ? __kthread_parkme+0x169/0x1d0
[ 152.650704][ C1] ? __pfx_worker_thread+0x10/0x10
[ 152.655874][ C1] kthread+0x2f0/0x390
[ 152.659967][ C1] ? __pfx_worker_thread+0x10/0x10
[ 152.665104][ C1] ? __pfx_kthread+0x10/0x10
[ 152.670005][ C1] ret_from_fork+0x4b/0x80
[ 152.674480][ C1] ? __pfx_kthread+0x10/0x10
[ 152.679200][ C1] ret_from_fork_asm+0x1a/0x30
[ 152.684055][ C1]
[ 152.687172][ C1]
[ 152.687172][ C1] Showing all locks held in the system:
[ 152.694938][ C1] 3 locks held by kworker/u8:4/61:
[ 152.700212][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 152.711969][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 152.725121][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 152.734743][ C1] 2 locks held by getty/4842:
[ 152.739497][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 152.749393][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 152.759768][ C1] 3 locks held by kworker/1:3/5108:
[ 152.765019][ C1] 2 locks held by syz-executor.0/5465:
[ 152.770522][ C1] 4 locks held by syz-executor.0/5468:
[ 152.776045][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 152.785670][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 152.795985][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 152.806082][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 152.816002][ C1] 2 locks held by sed/5467:
[ 152.820514][ C1]
[ 152.822848][ C1] =============================================
[ 152.822848][ C1]
[ 153.875761][ C1] DEBUG: holding rtnl_mutex for 7166 jiffies.
[ 153.881892][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 153.893884][ C1] Call Trace:
[ 153.897296][ C1]
[ 153.900247][ C1] __schedule+0x17e8/0x4a20
[ 153.904804][ C1] ? __pfx___schedule+0x10/0x10
[ 153.909711][ C1] ? __pfx_lock_release+0x10/0x10
[ 153.914753][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 153.920768][ C1] ? schedule+0x90/0x320
[ 153.925049][ C1] schedule+0x14b/0x320
[ 153.929292][ C1] synchronize_rcu_expedited+0x684/0x830
[ 153.934993][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 153.941222][ C1] ? mark_lock+0x9a/0x360
[ 153.945576][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 153.950917][ C1] ? __pfx___might_resched+0x10/0x10
[ 153.956339][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 153.962450][ C1] synchronize_rcu+0x11b/0x360
[ 153.967281][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 153.972590][ C1] ? lockdep_unlock+0x16a/0x300
[ 153.977657][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 153.982888][ C1] lockdep_unregister_key+0x4b7/0x540
[ 153.988324][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 153.994327][ C1] ? rcu_is_watching+0x15/0xb0
[ 153.999227][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 154.003845][ C1] __qdisc_destroy+0x165/0x410
[ 154.008750][ C1] taprio_attach+0x24e/0x390
[ 154.013369][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 154.018632][ C1] qdisc_graft+0x128a/0x1580
[ 154.023244][ C1] ? qdisc_graft+0x301/0x1580
[ 154.027981][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 154.033033][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 154.038113][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 154.043002][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 154.048365][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 154.053672][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 154.058758][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 154.063996][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 154.069523][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 154.075529][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 154.081994][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 154.087446][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 154.092755][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 154.098170][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 154.103478][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 154.108633][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 154.114724][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 154.119897][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 154.125131][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 154.130300][ C1] ? ref_tracker_free+0x643/0x7e0
[ 154.135348][ C1] netlink_rcv_skb+0x1e3/0x430
[ 154.140172][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 154.145656][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 154.151022][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 154.156454][ C1] netlink_unicast+0x7ea/0x980
[ 154.161338][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 154.166679][ C1] ? __virt_addr_valid+0x183/0x520
[ 154.171821][ C1] ? __check_object_size+0x49c/0x900
[ 154.177152][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 154.182288][ C1] netlink_sendmsg+0x8db/0xcb0
[ 154.187118][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 154.192430][ C1] ? __import_iovec+0x536/0x820
[ 154.197562][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 154.202640][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 154.208010][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 154.213588][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 154.218930][ C1] __sock_sendmsg+0x221/0x270
[ 154.223640][ C1] ____sys_sendmsg+0x525/0x7d0
[ 154.228477][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 154.233800][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 154.238451][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 154.243628][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 154.250097][ C1] ? do_syscall_64+0x100/0x230
[ 154.254904][ C1] ? do_syscall_64+0xb6/0x230
[ 154.259702][ C1] do_syscall_64+0xf3/0x230
[ 154.264253][ C1] ? clear_bhb_loop+0x35/0x90
[ 154.269009][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 154.274934][ C1] RIP: 0033:0x7f33e447dda9
[ 154.279407][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 154.287973][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 154.296110][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 154.304726][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 154.312751][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 154.320773][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 154.328814][ C1]
[ 154.331843][ C1] DEBUG: waiting rtnl_mutex for 7210 jiffies.
[ 154.337944][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 154.348197][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 154.354216][ C1] Call Trace:
[ 154.357546][ C1]
[ 154.360666][ C1] __schedule+0x17e8/0x4a20
[ 154.365228][ C1] ? __pfx___schedule+0x10/0x10
[ 154.370139][ C1] ? __pfx_lock_release+0x10/0x10
[ 154.375361][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 154.380879][ C1] ? kthread_data+0x52/0xd0
[ 154.385404][ C1] ? schedule+0x90/0x320
[ 154.389704][ C1] ? wq_worker_sleeping+0x66/0x240
[ 154.394840][ C1] ? schedule+0x90/0x320
[ 154.399134][ C1] schedule+0x14b/0x320
[ 154.403323][ C1] schedule_preempt_disabled+0x13/0x30
[ 154.409531][ C1] __mutex_lock+0x6a4/0xd70
[ 154.414056][ C1] ? mark_lock+0x9a/0x360
[ 154.418443][ C1] ? __mutex_lock+0x527/0xd70
[ 154.423152][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 154.428328][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 154.433389][ C1] ? rtnl_lock+0xe7/0x130
[ 154.437857][ C1] addrconf_dad_work+0xd0/0x16f0
[ 154.442932][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 154.448468][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 154.454841][ C1] ? process_scheduled_works+0x945/0x1830
[ 154.460623][ C1] process_scheduled_works+0xa2c/0x1830
[ 154.466323][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 154.472379][ C1] ? assign_work+0x364/0x3d0
[ 154.477076][ C1] worker_thread+0x86d/0xd50
[ 154.481879][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 154.487840][ C1] ? __kthread_parkme+0x169/0x1d0
[ 154.492894][ C1] ? __pfx_worker_thread+0x10/0x10
[ 154.498061][ C1] kthread+0x2f0/0x390
[ 154.502155][ C1] ? __pfx_worker_thread+0x10/0x10
[ 154.507400][ C1] ? __pfx_kthread+0x10/0x10
[ 154.512031][ C1] ret_from_fork+0x4b/0x80
[ 154.516529][ C1] ? __pfx_kthread+0x10/0x10
[ 154.521331][ C1] ret_from_fork_asm+0x1a/0x30
[ 154.526632][ C1]
[ 154.529666][ C1]
[ 154.529666][ C1] Showing all locks held in the system:
[ 154.537434][ C1] 3 locks held by kworker/u8:4/61:
[ 154.542552][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 154.554655][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 154.567635][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 154.577211][ C1] 2 locks held by getty/4842:
[ 154.581933][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 154.591831][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 154.602176][ C1] 3 locks held by kworker/1:3/5108:
[ 154.607525][ C1] 2 locks held by syz-executor.0/5465:
[ 154.612995][ C1] 4 locks held by syz-executor.0/5468:
[ 154.618590][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 154.628313][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 154.638763][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 154.648835][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 154.658819][ C1] 2 locks held by sed/5467:
[ 154.663400][ C1]
[ 154.665820][ C1] =============================================
[ 154.665820][ C1]
[ 155.715835][ C1] DEBUG: holding rtnl_mutex for 7350 jiffies.
[ 155.722056][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 155.734064][ C1] Call Trace:
[ 155.737397][ C1]
[ 155.740526][ C1] __schedule+0x17e8/0x4a20
[ 155.745195][ C1] ? __pfx___schedule+0x10/0x10
[ 155.750359][ C1] ? __pfx_lock_release+0x10/0x10
[ 155.755407][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 155.761383][ C1] ? schedule+0x90/0x320
[ 155.765642][ C1] schedule+0x14b/0x320
[ 155.769858][ C1] synchronize_rcu_expedited+0x684/0x830
[ 155.775519][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 155.781742][ C1] ? mark_lock+0x9a/0x360
[ 155.786126][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 155.791521][ C1] ? __pfx___might_resched+0x10/0x10
[ 155.796861][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 155.802961][ C1] synchronize_rcu+0x11b/0x360
[ 155.807789][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 155.813090][ C1] ? lockdep_unlock+0x16a/0x300
[ 155.817994][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 155.823228][ C1] lockdep_unregister_key+0x4b7/0x540
[ 155.828660][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 155.834662][ C1] ? rcu_is_watching+0x15/0xb0
[ 155.839497][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 155.844117][ C1] __qdisc_destroy+0x165/0x410
[ 155.849036][ C1] taprio_attach+0x24e/0x390
[ 155.853756][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 155.858937][ C1] qdisc_graft+0x128a/0x1580
[ 155.863554][ C1] ? qdisc_graft+0x301/0x1580
[ 155.868304][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 155.873354][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 155.878444][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 155.883330][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 155.888691][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 155.894086][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 155.899172][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 155.904572][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 155.910193][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 155.916242][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 155.922595][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 155.928136][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 155.933369][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 155.938796][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 155.944112][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 155.949276][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 155.955107][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 155.960449][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 155.965680][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 155.970856][ C1] ? ref_tracker_free+0x643/0x7e0
[ 155.976099][ C1] netlink_rcv_skb+0x1e3/0x430
[ 155.981005][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 155.986556][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 155.991987][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 155.997337][ C1] netlink_unicast+0x7ea/0x980
[ 156.002175][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 156.007513][ C1] ? __virt_addr_valid+0x183/0x520
[ 156.012655][ C1] ? __check_object_size+0x49c/0x900
[ 156.017993][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 156.023128][ C1] netlink_sendmsg+0x8db/0xcb0
[ 156.027977][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 156.033293][ C1] ? __import_iovec+0x536/0x820
[ 156.038202][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 156.043247][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 156.048675][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 156.054165][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 156.059503][ C1] __sock_sendmsg+0x221/0x270
[ 156.064211][ C1] ____sys_sendmsg+0x525/0x7d0
[ 156.069046][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 156.074377][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 156.079028][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 156.084214][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 156.090602][ C1] ? do_syscall_64+0x100/0x230
[ 156.095478][ C1] ? do_syscall_64+0xb6/0x230
[ 156.100217][ C1] do_syscall_64+0xf3/0x230
[ 156.104744][ C1] ? clear_bhb_loop+0x35/0x90
[ 156.109478][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 156.115392][ C1] RIP: 0033:0x7f33e447dda9
[ 156.119855][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 156.128326][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 156.136442][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 156.144429][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 156.152647][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 156.160677][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 156.168718][ C1]
[ 156.171750][ C1] DEBUG: waiting rtnl_mutex for 7394 jiffies.
[ 156.177859][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 156.188349][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 156.194373][ C1] Call Trace:
[ 156.197709][ C1]
[ 156.200657][ C1] __schedule+0x17e8/0x4a20
[ 156.205210][ C1] ? __pfx___schedule+0x10/0x10
[ 156.210223][ C1] ? __pfx_lock_release+0x10/0x10
[ 156.215274][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 156.220802][ C1] ? kthread_data+0x52/0xd0
[ 156.225327][ C1] ? schedule+0x90/0x320
[ 156.229703][ C1] ? wq_worker_sleeping+0x66/0x240
[ 156.235025][ C1] ? schedule+0x90/0x320
[ 156.239333][ C1] schedule+0x14b/0x320
[ 156.243518][ C1] schedule_preempt_disabled+0x13/0x30
[ 156.249048][ C1] __mutex_lock+0x6a4/0xd70
[ 156.253582][ C1] ? mark_lock+0x9a/0x360
[ 156.257982][ C1] ? __mutex_lock+0x527/0xd70
[ 156.262774][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 156.267953][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 156.273015][ C1] ? rtnl_lock+0xe7/0x130
[ 156.277399][ C1] addrconf_dad_work+0xd0/0x16f0
[ 156.282382][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 156.287896][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 156.294261][ C1] ? process_scheduled_works+0x945/0x1830
[ 156.300030][ C1] process_scheduled_works+0xa2c/0x1830
[ 156.305634][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 156.311675][ C1] ? assign_work+0x364/0x3d0
[ 156.316427][ C1] worker_thread+0x86d/0xd50
[ 156.321049][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 156.326996][ C1] ? __kthread_parkme+0x169/0x1d0
[ 156.332140][ C1] ? __pfx_worker_thread+0x10/0x10
[ 156.337301][ C1] kthread+0x2f0/0x390
[ 156.341396][ C1] ? __pfx_worker_thread+0x10/0x10
[ 156.346646][ C1] ? __pfx_kthread+0x10/0x10
[ 156.351260][ C1] ret_from_fork+0x4b/0x80
[ 156.355711][ C1] ? __pfx_kthread+0x10/0x10
[ 156.360377][ C1] ret_from_fork_asm+0x1a/0x30
[ 156.365193][ C1]
[ 156.368470][ C1]
[ 156.368470][ C1] Showing all locks held in the system:
[ 156.376672][ C1] 3 locks held by kworker/u8:4/61:
[ 156.381882][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 156.393806][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 156.406681][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 156.416203][ C1] 2 locks held by getty/4842:
[ 156.420910][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 156.430951][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 156.441159][ C1] 3 locks held by kworker/1:3/5108:
[ 156.446496][ C1] 2 locks held by syz-executor.0/5465:
[ 156.451975][ C1] 4 locks held by syz-executor.0/5468:
[ 156.457493][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 156.467166][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 156.477439][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 156.488484][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 156.498495][ C1] 2 locks held by sed/5467:
[ 156.503009][ C1]
[ 156.505340][ C1] =============================================
[ 156.505340][ C1]
[ 157.555760][ C1] DEBUG: holding rtnl_mutex for 7534 jiffies.
[ 157.561909][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 157.573909][ C1] Call Trace:
[ 157.577237][ C1]
[ 157.580190][ C1] __schedule+0x17e8/0x4a20
[ 157.585183][ C1] ? __pfx___schedule+0x10/0x10
[ 157.590184][ C1] ? __pfx_lock_release+0x10/0x10
[ 157.595284][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 157.601589][ C1] ? schedule+0x90/0x320
[ 157.605906][ C1] schedule+0x14b/0x320
[ 157.610123][ C1] synchronize_rcu_expedited+0x684/0x830
[ 157.615887][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 157.622154][ C1] ? mark_lock+0x9a/0x360
[ 157.626959][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 157.632295][ C1] ? __pfx___might_resched+0x10/0x10
[ 157.637660][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 157.643794][ C1] synchronize_rcu+0x11b/0x360
[ 157.648672][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 157.654079][ C1] ? lockdep_unlock+0x16a/0x300
[ 157.658995][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 157.664227][ C1] lockdep_unregister_key+0x4b7/0x540
[ 157.669761][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 157.675683][ C1] ? rcu_is_watching+0x15/0xb0
[ 157.680513][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 157.685134][ C1] __qdisc_destroy+0x165/0x410
[ 157.690137][ C1] taprio_attach+0x24e/0x390
[ 157.694762][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 157.699952][ C1] qdisc_graft+0x128a/0x1580
[ 157.704568][ C1] ? qdisc_graft+0x301/0x1580
[ 157.709320][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 157.714288][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 157.719394][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 157.724421][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 157.729849][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 157.735198][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 157.740785][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 157.746265][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 157.751772][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 157.757826][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 157.764185][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 157.769616][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 157.774845][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 157.780268][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 157.785603][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 157.790911][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 157.796703][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 157.801842][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 157.807129][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 157.812308][ C1] ? ref_tracker_free+0x643/0x7e0
[ 157.817485][ C1] netlink_rcv_skb+0x1e3/0x430
[ 157.822336][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 157.827924][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 157.833298][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 157.838801][ C1] netlink_unicast+0x7ea/0x980
[ 157.843730][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 157.849215][ C1] ? __virt_addr_valid+0x183/0x520
[ 157.854359][ C1] ? __check_object_size+0x49c/0x900
[ 157.859703][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 157.864839][ C1] netlink_sendmsg+0x8db/0xcb0
[ 157.869686][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 157.874996][ C1] ? __import_iovec+0x536/0x820
[ 157.879905][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 157.884862][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 157.890208][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 157.895811][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 157.901150][ C1] __sock_sendmsg+0x221/0x270
[ 157.905980][ C1] ____sys_sendmsg+0x525/0x7d0
[ 157.910774][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 157.916132][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 157.920830][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 157.926204][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 157.932570][ C1] ? do_syscall_64+0x100/0x230
[ 157.937401][ C1] ? do_syscall_64+0xb6/0x230
[ 157.942112][ C1] do_syscall_64+0xf3/0x230
[ 157.946675][ C1] ? clear_bhb_loop+0x35/0x90
[ 157.951374][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 157.957319][ C1] RIP: 0033:0x7f33e447dda9
[ 157.961836][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 157.970654][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 157.978819][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 157.986917][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 157.995096][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 158.003128][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 158.011172][ C1]
[ 158.014292][ C1] DEBUG: waiting rtnl_mutex for 7578 jiffies.
[ 158.020456][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 158.030700][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 158.036753][ C1] Call Trace:
[ 158.040049][ C1]
[ 158.043005][ C1] __schedule+0x17e8/0x4a20
[ 158.047586][ C1] ? __pfx___schedule+0x10/0x10
[ 158.052459][ C1] ? __pfx_lock_release+0x10/0x10
[ 158.057584][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 158.063128][ C1] ? kthread_data+0x52/0xd0
[ 158.067766][ C1] ? schedule+0x90/0x320
[ 158.072089][ C1] ? wq_worker_sleeping+0x66/0x240
[ 158.077291][ C1] ? schedule+0x90/0x320
[ 158.081557][ C1] schedule+0x14b/0x320
[ 158.085784][ C1] schedule_preempt_disabled+0x13/0x30
[ 158.091365][ C1] __mutex_lock+0x6a4/0xd70
[ 158.095926][ C1] ? mark_lock+0x9a/0x360
[ 158.100289][ C1] ? __mutex_lock+0x527/0xd70
[ 158.104988][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 158.110157][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 158.115305][ C1] ? rtnl_lock+0xe7/0x130
[ 158.119738][ C1] addrconf_dad_work+0xd0/0x16f0
[ 158.124737][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 158.130318][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 158.136736][ C1] ? process_scheduled_works+0x945/0x1830
[ 158.142569][ C1] process_scheduled_works+0xa2c/0x1830
[ 158.148288][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 158.154385][ C1] ? assign_work+0x364/0x3d0
[ 158.159139][ C1] worker_thread+0x86d/0xd50
[ 158.163772][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 158.169731][ C1] ? __kthread_parkme+0x169/0x1d0
[ 158.174783][ C1] ? __pfx_worker_thread+0x10/0x10
[ 158.179946][ C1] kthread+0x2f0/0x390
[ 158.184061][ C1] ? __pfx_worker_thread+0x10/0x10
[ 158.189228][ C1] ? __pfx_kthread+0x10/0x10
[ 158.193928][ C1] ret_from_fork+0x4b/0x80
[ 158.198409][ C1] ? __pfx_kthread+0x10/0x10
[ 158.203032][ C1] ret_from_fork_asm+0x1a/0x30
[ 158.207869][ C1]
[ 158.211067][ C1]
[ 158.211067][ C1] Showing all locks held in the system:
[ 158.219042][ C1] 3 locks held by kworker/u8:4/61:
[ 158.224164][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 158.236015][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 158.248979][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 158.258508][ C1] 2 locks held by getty/4842:
[ 158.263195][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 158.273145][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 158.283333][ C1] 3 locks held by kworker/1:3/5108:
[ 158.288671][ C1] 2 locks held by syz-executor.0/5465:
[ 158.294137][ C1] 4 locks held by syz-executor.0/5468:
[ 158.299636][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 158.309389][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 158.319675][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 158.329687][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 158.339756][ C1] 2 locks held by sed/5467:
[ 158.344275][ C1]
[ 158.346649][ C1] =============================================
[ 158.346649][ C1]
[ 159.395769][ C1] DEBUG: holding rtnl_mutex for 7718 jiffies.
[ 159.402121][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 159.413937][ C1] Call Trace:
[ 159.417468][ C1]
[ 159.420418][ C1] __schedule+0x17e8/0x4a20
[ 159.425144][ C1] ? __pfx___schedule+0x10/0x10
[ 159.430057][ C1] ? __pfx_lock_release+0x10/0x10
[ 159.435101][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 159.441061][ C1] ? schedule+0x90/0x320
[ 159.445320][ C1] schedule+0x14b/0x320
[ 159.449613][ C1] synchronize_rcu_expedited+0x684/0x830
[ 159.455359][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 159.461581][ C1] ? mark_lock+0x9a/0x360
[ 159.465972][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 159.471318][ C1] ? __pfx___might_resched+0x10/0x10
[ 159.476720][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 159.482832][ C1] synchronize_rcu+0x11b/0x360
[ 159.487671][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 159.492997][ C1] ? lockdep_unlock+0x16a/0x300
[ 159.498081][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 159.503368][ C1] lockdep_unregister_key+0x4b7/0x540
[ 159.508874][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 159.514799][ C1] ? rcu_is_watching+0x15/0xb0
[ 159.519630][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 159.524249][ C1] __qdisc_destroy+0x165/0x410
[ 159.529088][ C1] taprio_attach+0x24e/0x390
[ 159.533743][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 159.538929][ C1] qdisc_graft+0x128a/0x1580
[ 159.543574][ C1] ? qdisc_graft+0x301/0x1580
[ 159.548396][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 159.553484][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 159.558839][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 159.563771][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 159.569207][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 159.574524][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 159.579785][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 159.585143][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 159.590729][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 159.596793][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 159.603170][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 159.608699][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 159.614209][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 159.619735][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 159.625053][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 159.630236][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 159.636019][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 159.641246][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 159.646698][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 159.651885][ C1] ? ref_tracker_free+0x643/0x7e0
[ 159.657023][ C1] netlink_rcv_skb+0x1e3/0x430
[ 159.661830][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 159.667365][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 159.672703][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 159.677975][ C1] netlink_unicast+0x7ea/0x980
[ 159.682775][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 159.688119][ C1] ? __virt_addr_valid+0x183/0x520
[ 159.693259][ C1] ? __check_object_size+0x49c/0x900
[ 159.698598][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 159.703735][ C1] netlink_sendmsg+0x8db/0xcb0
[ 159.708594][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 159.714001][ C1] ? __import_iovec+0x536/0x820
[ 159.719042][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 159.724228][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 159.729713][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 159.735332][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 159.740680][ C1] __sock_sendmsg+0x221/0x270
[ 159.745484][ C1] ____sys_sendmsg+0x525/0x7d0
[ 159.750315][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 159.755640][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 159.760409][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 159.765587][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 159.771970][ C1] ? do_syscall_64+0x100/0x230
[ 159.776796][ C1] ? do_syscall_64+0xb6/0x230
[ 159.781491][ C1] do_syscall_64+0xf3/0x230
[ 159.786046][ C1] ? clear_bhb_loop+0x35/0x90
[ 159.790747][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 159.796777][ C1] RIP: 0033:0x7f33e447dda9
[ 159.801340][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 159.809866][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 159.817991][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 159.826121][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 159.834200][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 159.842443][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 159.850506][ C1]
[ 159.853542][ C1] DEBUG: waiting rtnl_mutex for 7762 jiffies.
[ 159.859754][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 159.870171][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 159.876227][ C1] Call Trace:
[ 159.879521][ C1]
[ 159.882584][ C1] __schedule+0x17e8/0x4a20
[ 159.887179][ C1] ? __pfx___schedule+0x10/0x10
[ 159.892054][ C1] ? __pfx_lock_release+0x10/0x10
[ 159.897131][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 159.902616][ C1] ? kthread_data+0x52/0xd0
[ 159.907342][ C1] ? schedule+0x90/0x320
[ 159.911603][ C1] ? wq_worker_sleeping+0x66/0x240
[ 159.916773][ C1] ? schedule+0x90/0x320
[ 159.921039][ C1] schedule+0x14b/0x320
[ 159.925305][ C1] schedule_preempt_disabled+0x13/0x30
[ 159.930822][ C1] __mutex_lock+0x6a4/0xd70
[ 159.935437][ C1] ? mark_lock+0x9a/0x360
[ 159.939824][ C1] ? __mutex_lock+0x527/0xd70
[ 159.944525][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 159.949696][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 159.954877][ C1] ? rtnl_lock+0xe7/0x130
[ 159.959414][ C1] addrconf_dad_work+0xd0/0x16f0
[ 159.964668][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 159.970213][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 159.976611][ C1] ? process_scheduled_works+0x945/0x1830
[ 159.982354][ C1] process_scheduled_works+0xa2c/0x1830
[ 159.988076][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 159.994087][ C1] ? assign_work+0x364/0x3d0
[ 159.998914][ C1] worker_thread+0x86d/0xd50
[ 160.003536][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 160.009584][ C1] ? __kthread_parkme+0x169/0x1d0
[ 160.014817][ C1] ? __pfx_worker_thread+0x10/0x10
[ 160.019988][ C1] kthread+0x2f0/0x390
[ 160.024079][ C1] ? __pfx_worker_thread+0x10/0x10
[ 160.029362][ C1] ? __pfx_kthread+0x10/0x10
[ 160.034004][ C1] ret_from_fork+0x4b/0x80
[ 160.038529][ C1] ? __pfx_kthread+0x10/0x10
[ 160.043149][ C1] ret_from_fork_asm+0x1a/0x30
[ 160.047997][ C1]
[ 160.051032][ C1]
[ 160.051032][ C1] Showing all locks held in the system:
[ 160.058820][ C1] 3 locks held by kworker/u8:4/61:
[ 160.064031][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 160.075705][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 160.088622][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 160.098227][ C1] 2 locks held by getty/4842:
[ 160.103006][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 160.112847][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 160.123110][ C1] 3 locks held by kworker/1:3/5108:
[ 160.128358][ C1] 2 locks held by syz-executor.0/5465:
[ 160.133825][ C1] 4 locks held by syz-executor.0/5468:
[ 160.139324][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 160.148992][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 160.159269][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 160.169193][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 160.179205][ C1] 2 locks held by sed/5467:
[ 160.183722][ C1]
[ 160.186086][ C1] =============================================
[ 160.186086][ C1]
[ 161.235757][ C1] DEBUG: holding rtnl_mutex for 7902 jiffies.
[ 161.241888][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 161.253795][ C1] Call Trace:
[ 161.257121][ C1]
[ 161.260116][ C1] __schedule+0x17e8/0x4a20
[ 161.264720][ C1] ? __pfx___schedule+0x10/0x10
[ 161.269630][ C1] ? __pfx_lock_release+0x10/0x10
[ 161.274703][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 161.280844][ C1] ? schedule+0x90/0x320
[ 161.285105][ C1] schedule+0x14b/0x320
[ 161.289314][ C1] synchronize_rcu_expedited+0x684/0x830
[ 161.295061][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 161.301445][ C1] ? mark_lock+0x9a/0x360
[ 161.305856][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 161.311172][ C1] ? __pfx___might_resched+0x10/0x10
[ 161.316766][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 161.323068][ C1] synchronize_rcu+0x11b/0x360
[ 161.327921][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 161.333232][ C1] ? lockdep_unlock+0x16a/0x300
[ 161.338139][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 161.343369][ C1] lockdep_unregister_key+0x4b7/0x540
[ 161.348804][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 161.354724][ C1] ? rcu_is_watching+0x15/0xb0
[ 161.359548][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 161.364252][ C1] __qdisc_destroy+0x165/0x410
[ 161.369086][ C1] taprio_attach+0x24e/0x390
[ 161.373721][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 161.378898][ C1] qdisc_graft+0x128a/0x1580
[ 161.383514][ C1] ? qdisc_graft+0x301/0x1580
[ 161.388258][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 161.393233][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 161.398413][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 161.403300][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 161.408666][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 161.413974][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 161.419062][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 161.424287][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 161.429828][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 161.435893][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 161.442248][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 161.447668][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 161.452994][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 161.458413][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 161.463742][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 161.468952][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 161.474766][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 161.479963][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 161.485382][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 161.490565][ C1] ? ref_tracker_free+0x643/0x7e0
[ 161.495655][ C1] netlink_rcv_skb+0x1e3/0x430
[ 161.500549][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 161.506083][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 161.511504][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 161.516770][ C1] netlink_unicast+0x7ea/0x980
[ 161.521565][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 161.527086][ C1] ? __virt_addr_valid+0x183/0x520
[ 161.532231][ C1] ? __check_object_size+0x49c/0x900
[ 161.537570][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 161.542717][ C1] netlink_sendmsg+0x8db/0xcb0
[ 161.548076][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 161.553501][ C1] ? __import_iovec+0x536/0x820
[ 161.558472][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 161.563438][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 161.568827][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 161.574338][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 161.580053][ C1] __sock_sendmsg+0x221/0x270
[ 161.584853][ C1] ____sys_sendmsg+0x525/0x7d0
[ 161.589712][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 161.595117][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 161.599848][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 161.605066][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 161.611737][ C1] ? do_syscall_64+0x100/0x230
[ 161.616737][ C1] ? do_syscall_64+0xb6/0x230
[ 161.621444][ C1] do_syscall_64+0xf3/0x230
[ 161.626002][ C1] ? clear_bhb_loop+0x35/0x90
[ 161.630704][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 161.636759][ C1] RIP: 0033:0x7f33e447dda9
[ 161.641453][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 161.649923][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 161.657950][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 161.666032][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 161.674120][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 161.682158][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 161.690290][ C1]
[ 161.693349][ C1] DEBUG: waiting rtnl_mutex for 7946 jiffies.
[ 161.699484][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 161.709887][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 161.715930][ C1] Call Trace:
[ 161.719216][ C1]
[ 161.722159][ C1] __schedule+0x17e8/0x4a20
[ 161.726750][ C1] ? __pfx___schedule+0x10/0x10
[ 161.731797][ C1] ? __pfx_lock_release+0x10/0x10
[ 161.737030][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 161.742554][ C1] ? kthread_data+0x52/0xd0
[ 161.747155][ C1] ? schedule+0x90/0x320
[ 161.751447][ C1] ? wq_worker_sleeping+0x66/0x240
[ 161.756720][ C1] ? schedule+0x90/0x320
[ 161.761017][ C1] schedule+0x14b/0x320
[ 161.765230][ C1] schedule_preempt_disabled+0x13/0x30
[ 161.770839][ C1] __mutex_lock+0x6a4/0xd70
[ 161.775461][ C1] ? mark_lock+0x9a/0x360
[ 161.779870][ C1] ? __mutex_lock+0x527/0xd70
[ 161.784660][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 161.789846][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 161.794920][ C1] ? rtnl_lock+0xe7/0x130
[ 161.799392][ C1] addrconf_dad_work+0xd0/0x16f0
[ 161.804453][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 161.809979][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 161.816642][ C1] ? process_scheduled_works+0x945/0x1830
[ 161.822400][ C1] process_scheduled_works+0xa2c/0x1830
[ 161.828093][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 161.834300][ C1] ? assign_work+0x364/0x3d0
[ 161.839139][ C1] worker_thread+0x86d/0xd50
[ 161.843763][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 161.849896][ C1] ? __kthread_parkme+0x169/0x1d0
[ 161.854955][ C1] ? __pfx_worker_thread+0x10/0x10
[ 161.860205][ C1] kthread+0x2f0/0x390
[ 161.864388][ C1] ? __pfx_worker_thread+0x10/0x10
[ 161.869665][ C1] ? __pfx_kthread+0x10/0x10
[ 161.874278][ C1] ret_from_fork+0x4b/0x80
[ 161.878746][ C1] ? __pfx_kthread+0x10/0x10
[ 161.883358][ C1] ret_from_fork_asm+0x1a/0x30
[ 161.888630][ C1]
[ 161.891660][ C1]
[ 161.891660][ C1] Showing all locks held in the system:
[ 161.899418][ C1] 3 locks held by kworker/u8:4/61:
[ 161.904551][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 161.916221][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 161.929092][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 161.938797][ C1] 2 locks held by getty/4842:
[ 161.943485][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 161.953497][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 161.963682][ C1] 3 locks held by kworker/1:3/5108:
[ 161.969009][ C1] 2 locks held by syz-executor.0/5465:
[ 161.974474][ C1] 4 locks held by syz-executor.0/5468:
[ 161.979969][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 161.990748][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 162.001011][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 162.011018][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 162.020943][ C1] 2 locks held by sed/5467:
[ 162.025471][ C1]
[ 162.027840][ C1] =============================================
[ 162.027840][ C1]
[ 163.075772][ C1] DEBUG: holding rtnl_mutex for 8086 jiffies.
[ 163.082009][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 163.093914][ C1] Call Trace:
[ 163.097247][ C1]
[ 163.100203][ C1] __schedule+0x17e8/0x4a20
[ 163.104843][ C1] ? __pfx___schedule+0x10/0x10
[ 163.109752][ C1] ? __pfx_lock_release+0x10/0x10
[ 163.114793][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 163.120754][ C1] ? schedule+0x90/0x320
[ 163.125021][ C1] schedule+0x14b/0x320
[ 163.129252][ C1] synchronize_rcu_expedited+0x684/0x830
[ 163.134915][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 163.141143][ C1] ? mark_lock+0x9a/0x360
[ 163.145499][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 163.150849][ C1] ? __pfx___might_resched+0x10/0x10
[ 163.156197][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 163.162298][ C1] synchronize_rcu+0x11b/0x360
[ 163.167123][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 163.172429][ C1] ? lockdep_unlock+0x16a/0x300
[ 163.177474][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 163.182705][ C1] lockdep_unregister_key+0x4b7/0x540
[ 163.188137][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 163.194227][ C1] ? rcu_is_watching+0x15/0xb0
[ 163.199133][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 163.203837][ C1] __qdisc_destroy+0x165/0x410
[ 163.208753][ C1] taprio_attach+0x24e/0x390
[ 163.213376][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 163.218632][ C1] qdisc_graft+0x128a/0x1580
[ 163.223253][ C1] ? qdisc_graft+0x301/0x1580
[ 163.227991][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 163.232954][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 163.238134][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 163.243018][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 163.248385][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 163.253717][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 163.259149][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 163.264371][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 163.269905][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 163.276037][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 163.282482][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 163.287992][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 163.293213][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 163.298722][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 163.304024][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 163.309273][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 163.315189][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 163.320365][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 163.325600][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 163.330785][ C1] ? ref_tracker_free+0x643/0x7e0
[ 163.335965][ C1] netlink_rcv_skb+0x1e3/0x430
[ 163.340761][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 163.346290][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 163.351673][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 163.356936][ C1] netlink_unicast+0x7ea/0x980
[ 163.361830][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 163.367278][ C1] ? __virt_addr_valid+0x183/0x520
[ 163.372517][ C1] ? __check_object_size+0x49c/0x900
[ 163.377864][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 163.383008][ C1] netlink_sendmsg+0x8db/0xcb0
[ 163.387847][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 163.393158][ C1] ? __import_iovec+0x536/0x820
[ 163.398058][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 163.403036][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 163.408379][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 163.413864][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 163.419206][ C1] __sock_sendmsg+0x221/0x270
[ 163.423922][ C1] ____sys_sendmsg+0x525/0x7d0
[ 163.428753][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 163.434163][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 163.438812][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 163.444094][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 163.450478][ C1] ? do_syscall_64+0x100/0x230
[ 163.455271][ C1] ? do_syscall_64+0xb6/0x230
[ 163.460000][ C1] do_syscall_64+0xf3/0x230
[ 163.464619][ C1] ? clear_bhb_loop+0x35/0x90
[ 163.469398][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 163.475350][ C1] RIP: 0033:0x7f33e447dda9
[ 163.479845][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 163.488406][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 163.496427][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 163.504498][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 163.512530][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 163.520547][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 163.528587][ C1]
[ 163.531640][ C1] DEBUG: waiting rtnl_mutex for 8130 jiffies.
[ 163.537744][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 163.547963][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 163.553976][ C1] Call Trace:
[ 163.557361][ C1]
[ 163.560323][ C1] __schedule+0x17e8/0x4a20
[ 163.564881][ C1] ? __pfx___schedule+0x10/0x10
[ 163.569800][ C1] ? __pfx_lock_release+0x10/0x10
[ 163.574869][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 163.580458][ C1] ? kthread_data+0x52/0xd0
[ 163.585009][ C1] ? schedule+0x90/0x320
[ 163.589370][ C1] ? wq_worker_sleeping+0x66/0x240
[ 163.594522][ C1] ? schedule+0x90/0x320
[ 163.598840][ C1] schedule+0x14b/0x320
[ 163.603122][ C1] schedule_preempt_disabled+0x13/0x30
[ 163.608729][ C1] __mutex_lock+0x6a4/0xd70
[ 163.613346][ C1] ? mark_lock+0x9a/0x360
[ 163.617745][ C1] ? __mutex_lock+0x527/0xd70
[ 163.622493][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 163.627762][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 163.632822][ C1] ? rtnl_lock+0xe7/0x130
[ 163.637305][ C1] addrconf_dad_work+0xd0/0x16f0
[ 163.642405][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 163.648174][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 163.654640][ C1] ? process_scheduled_works+0x945/0x1830
[ 163.660719][ C1] process_scheduled_works+0xa2c/0x1830
[ 163.666414][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 163.672508][ C1] ? assign_work+0x364/0x3d0
[ 163.677218][ C1] worker_thread+0x86d/0xd50
[ 163.681956][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 163.688137][ C1] ? __kthread_parkme+0x169/0x1d0
[ 163.693292][ C1] ? __pfx_worker_thread+0x10/0x10
[ 163.698518][ C1] kthread+0x2f0/0x390
[ 163.702617][ C1] ? __pfx_worker_thread+0x10/0x10
[ 163.707858][ C1] ? __pfx_kthread+0x10/0x10
[ 163.712488][ C1] ret_from_fork+0x4b/0x80
[ 163.717028][ C1] ? __pfx_kthread+0x10/0x10
[ 163.721691][ C1] ret_from_fork_asm+0x1a/0x30
[ 163.726642][ C1]
[ 163.729712][ C1]
[ 163.729712][ C1] Showing all locks held in the system:
[ 163.737613][ C1] 3 locks held by kworker/u8:4/61:
[ 163.742861][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 163.754600][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 163.767575][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 163.777316][ C1] 2 locks held by getty/4842:
[ 163.782049][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 163.791943][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 163.802144][ C1] 3 locks held by kworker/1:3/5108:
[ 163.807479][ C1] 2 locks held by syz-executor.0/5465:
[ 163.813066][ C1] 4 locks held by syz-executor.0/5468:
[ 163.818618][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 163.828375][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 163.838732][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 163.848581][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 163.858591][ C1] 2 locks held by sed/5467:
[ 163.863155][ C1]
[ 163.865494][ C1] =============================================
[ 163.865494][ C1]
[ 164.915760][ C1] DEBUG: holding rtnl_mutex for 8270 jiffies.
[ 164.921886][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 164.933884][ C1] Call Trace:
[ 164.937209][ C1]
[ 164.940160][ C1] __schedule+0x17e8/0x4a20
[ 164.944803][ C1] ? __pfx___schedule+0x10/0x10
[ 164.949710][ C1] ? __pfx_lock_release+0x10/0x10
[ 164.954762][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 164.960722][ C1] ? schedule+0x90/0x320
[ 164.964990][ C1] schedule+0x14b/0x320
[ 164.969289][ C1] synchronize_rcu_expedited+0x684/0x830
[ 164.974970][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 164.981285][ C1] ? mark_lock+0x9a/0x360
[ 164.985670][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 164.991099][ C1] ? __pfx___might_resched+0x10/0x10
[ 164.996453][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 165.002578][ C1] synchronize_rcu+0x11b/0x360
[ 165.007402][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 165.012714][ C1] ? lockdep_unlock+0x16a/0x300
[ 165.017710][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 165.023025][ C1] lockdep_unregister_key+0x4b7/0x540
[ 165.028455][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 165.034457][ C1] ? rcu_is_watching+0x15/0xb0
[ 165.039285][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 165.044385][ C1] __qdisc_destroy+0x165/0x410
[ 165.049299][ C1] taprio_attach+0x24e/0x390
[ 165.053921][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 165.059104][ C1] qdisc_graft+0x128a/0x1580
[ 165.063840][ C1] ? qdisc_graft+0x301/0x1580
[ 165.068586][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 165.073553][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 165.078734][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 165.083619][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 165.088979][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 165.094280][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 165.099366][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 165.104590][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 165.110115][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 165.116241][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 165.122592][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 165.128102][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 165.133333][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 165.138751][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 165.144093][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 165.149377][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 165.155364][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 165.160755][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 165.166168][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 165.171322][ C1] ? ref_tracker_free+0x643/0x7e0
[ 165.176418][ C1] netlink_rcv_skb+0x1e3/0x430
[ 165.181215][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 165.186739][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 165.192074][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 165.197329][ C1] netlink_unicast+0x7ea/0x980
[ 165.202222][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 165.207558][ C1] ? __virt_addr_valid+0x183/0x520
[ 165.212698][ C1] ? __check_object_size+0x49c/0x900
[ 165.218046][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 165.223267][ C1] netlink_sendmsg+0x8db/0xcb0
[ 165.228095][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 165.233413][ C1] ? __import_iovec+0x536/0x820
[ 165.238319][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 165.243317][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 165.248666][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 165.254236][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 165.259579][ C1] __sock_sendmsg+0x221/0x270
[ 165.264314][ C1] ____sys_sendmsg+0x525/0x7d0
[ 165.269142][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 165.274467][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 165.279136][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 165.284315][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 165.290739][ C1] ? do_syscall_64+0x100/0x230
[ 165.295561][ C1] ? do_syscall_64+0xb6/0x230
[ 165.300347][ C1] do_syscall_64+0xf3/0x230
[ 165.304995][ C1] ? clear_bhb_loop+0x35/0x90
[ 165.309809][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 165.315805][ C1] RIP: 0033:0x7f33e447dda9
[ 165.320347][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 165.328827][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 165.336912][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 165.344936][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 165.353003][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 165.361033][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 165.369141][ C1]
[ 165.372184][ C1] DEBUG: waiting rtnl_mutex for 8314 jiffies.
[ 165.378299][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 165.388613][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 165.394633][ C1] Call Trace:
[ 165.397958][ C1]
[ 165.400907][ C1] __schedule+0x17e8/0x4a20
[ 165.405470][ C1] ? __pfx___schedule+0x10/0x10
[ 165.410375][ C1] ? __pfx_lock_release+0x10/0x10
[ 165.415420][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 165.420936][ C1] ? kthread_data+0x52/0xd0
[ 165.425548][ C1] ? schedule+0x90/0x320
[ 165.429844][ C1] ? wq_worker_sleeping+0x66/0x240
[ 165.435005][ C1] ? schedule+0x90/0x320
[ 165.439372][ C1] schedule+0x14b/0x320
[ 165.443562][ C1] schedule_preempt_disabled+0x13/0x30
[ 165.449098][ C1] __mutex_lock+0x6a4/0xd70
[ 165.453625][ C1] ? mark_lock+0x9a/0x360
[ 165.458019][ C1] ? __mutex_lock+0x527/0xd70
[ 165.462721][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 165.467902][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 165.472965][ C1] ? rtnl_lock+0xe7/0x130
[ 165.477343][ C1] addrconf_dad_work+0xd0/0x16f0
[ 165.482354][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 165.487950][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 165.494434][ C1] ? process_scheduled_works+0x945/0x1830
[ 165.500335][ C1] process_scheduled_works+0xa2c/0x1830
[ 165.506073][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 165.512096][ C1] ? assign_work+0x364/0x3d0
[ 165.516749][ C1] worker_thread+0x86d/0xd50
[ 165.521374][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 165.527329][ C1] ? __kthread_parkme+0x169/0x1d0
[ 165.532377][ C1] ? __pfx_worker_thread+0x10/0x10
[ 165.537538][ C1] kthread+0x2f0/0x390
[ 165.541633][ C1] ? __pfx_worker_thread+0x10/0x10
[ 165.546797][ C1] ? __pfx_kthread+0x10/0x10
[ 165.551547][ C1] ret_from_fork+0x4b/0x80
[ 165.556162][ C1] ? __pfx_kthread+0x10/0x10
[ 165.560794][ C1] ret_from_fork_asm+0x1a/0x30
[ 165.565598][ C1]
[ 165.568731][ C1]
[ 165.568731][ C1] Showing all locks held in the system:
[ 165.576548][ C1] 3 locks held by kworker/u8:4/61:
[ 165.581768][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 165.594239][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 165.607343][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 165.616950][ C1] 2 locks held by getty/4842:
[ 165.621647][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 165.631510][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 165.641781][ C1] 3 locks held by kworker/1:3/5108:
[ 165.647033][ C1] 2 locks held by syz-executor.0/5465:
[ 165.652530][ C1] 4 locks held by syz-executor.0/5468:
[ 165.658090][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 165.667827][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 165.678127][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 165.687976][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 165.698062][ C1] 1 lock held by sed/5467:
[ 165.702576][ C1]
[ 165.704942][ C1] =============================================
[ 165.704942][ C1]
[ 166.755777][ C1] DEBUG: holding rtnl_mutex for 8454 jiffies.
[ 166.762057][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 166.774010][ C1] Call Trace:
[ 166.777402][ C1]
[ 166.780350][ C1] __schedule+0x17e8/0x4a20
[ 166.784904][ C1] ? __pfx___schedule+0x10/0x10
[ 166.789820][ C1] ? __pfx_lock_release+0x10/0x10
[ 166.794861][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 166.800854][ C1] ? schedule+0x90/0x320
[ 166.805293][ C1] schedule+0x14b/0x320
[ 166.809682][ C1] synchronize_rcu_expedited+0x684/0x830
[ 166.815471][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 166.821766][ C1] ? mark_lock+0x9a/0x360
[ 166.826180][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 166.831587][ C1] ? __pfx___might_resched+0x10/0x10
[ 166.836940][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 166.843042][ C1] synchronize_rcu+0x11b/0x360
[ 166.847953][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 166.853352][ C1] ? lockdep_unlock+0x16a/0x300
[ 166.858272][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 166.863511][ C1] lockdep_unregister_key+0x4b7/0x540
[ 166.868954][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 166.874870][ C1] ? rcu_is_watching+0x15/0xb0
[ 166.879700][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 166.884325][ C1] __qdisc_destroy+0x165/0x410
[ 166.889155][ C1] taprio_attach+0x24e/0x390
[ 166.893779][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 166.899040][ C1] qdisc_graft+0x128a/0x1580
[ 166.903656][ C1] ? qdisc_graft+0x301/0x1580
[ 166.908398][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 166.913372][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 166.918492][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 166.923384][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 166.928764][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 166.934078][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 166.939258][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 166.944486][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 166.950274][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 166.956400][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 166.962760][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 166.968217][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 166.973450][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 166.978926][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 166.984478][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 166.989790][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 166.995627][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 167.000804][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 167.006071][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 167.011239][ C1] ? ref_tracker_free+0x643/0x7e0
[ 167.016385][ C1] netlink_rcv_skb+0x1e3/0x430
[ 167.021205][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 167.026738][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 167.032070][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 167.037330][ C1] netlink_unicast+0x7ea/0x980
[ 167.042125][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 167.047460][ C1] ? __virt_addr_valid+0x183/0x520
[ 167.052613][ C1] ? __check_object_size+0x49c/0x900
[ 167.058000][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 167.063170][ C1] netlink_sendmsg+0x8db/0xcb0
[ 167.068046][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 167.073364][ C1] ? __import_iovec+0x536/0x820
[ 167.078287][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 167.083248][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 167.088591][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 167.094079][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 167.099563][ C1] __sock_sendmsg+0x221/0x270
[ 167.104310][ C1] ____sys_sendmsg+0x525/0x7d0
[ 167.109178][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 167.114510][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 167.119157][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 167.124335][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 167.130809][ C1] ? do_syscall_64+0x100/0x230
[ 167.135604][ C1] ? do_syscall_64+0xb6/0x230
[ 167.140339][ C1] do_syscall_64+0xf3/0x230
[ 167.144862][ C1] ? clear_bhb_loop+0x35/0x90
[ 167.149677][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 167.155618][ C1] RIP: 0033:0x7f33e447dda9
[ 167.160262][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 167.168998][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 167.177018][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 167.185005][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 167.193023][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 167.201040][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 167.209337][ C1]
[ 167.212369][ C1] DEBUG: waiting rtnl_mutex for 8498 jiffies.
[ 167.218471][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 167.228695][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 167.234798][ C1] Call Trace:
[ 167.238120][ C1]
[ 167.241066][ C1] __schedule+0x17e8/0x4a20
[ 167.245821][ C1] ? __pfx___schedule+0x10/0x10
[ 167.251130][ C1] ? __pfx_lock_release+0x10/0x10
[ 167.256208][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 167.261692][ C1] ? kthread_data+0x52/0xd0
[ 167.266309][ C1] ? schedule+0x90/0x320
[ 167.270594][ C1] ? wq_worker_sleeping+0x66/0x240
[ 167.275794][ C1] ? schedule+0x90/0x320
[ 167.280060][ C1] schedule+0x14b/0x320
[ 167.284251][ C1] schedule_preempt_disabled+0x13/0x30
[ 167.289765][ C1] __mutex_lock+0x6a4/0xd70
[ 167.294290][ C1] ? mark_lock+0x9a/0x360
[ 167.298680][ C1] ? __mutex_lock+0x527/0xd70
[ 167.303382][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 167.308552][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 167.313613][ C1] ? rtnl_lock+0xe7/0x130
[ 167.318008][ C1] addrconf_dad_work+0xd0/0x16f0
[ 167.323067][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 167.328618][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 167.334987][ C1] ? process_scheduled_works+0x945/0x1830
[ 167.340757][ C1] process_scheduled_works+0xa2c/0x1830
[ 167.346386][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 167.352616][ C1] ? assign_work+0x364/0x3d0
[ 167.357307][ C1] worker_thread+0x86d/0xd50
[ 167.361936][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 167.367890][ C1] ? __kthread_parkme+0x169/0x1d0
[ 167.372966][ C1] ? __pfx_worker_thread+0x10/0x10
[ 167.378126][ C1] kthread+0x2f0/0x390
[ 167.382218][ C1] ? __pfx_worker_thread+0x10/0x10
[ 167.387495][ C1] ? __pfx_kthread+0x10/0x10
[ 167.392154][ C1] ret_from_fork+0x4b/0x80
[ 167.396633][ C1] ? __pfx_kthread+0x10/0x10
[ 167.401255][ C1] ret_from_fork_asm+0x1a/0x30
[ 167.406089][ C1]
[ 167.409213][ C1]
[ 167.409213][ C1] Showing all locks held in the system:
[ 167.417059][ C1] 3 locks held by kworker/u8:4/61:
[ 167.422179][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 167.434051][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 167.446924][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 167.456459][ C1] 2 locks held by getty/4842:
[ 167.461144][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 167.471389][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 167.481668][ C1] 3 locks held by kworker/1:3/5108:
[ 167.486932][ C1] 2 locks held by syz-executor.0/5465:
[ 167.492408][ C1] 4 locks held by syz-executor.0/5468:
[ 167.497906][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 167.507574][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 167.517855][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 167.527783][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 167.537724][ C1] 1 lock held by sed/5467:
[ 167.542322][ C1]
[ 167.544653][ C1] =============================================
[ 167.544653][ C1]
[ 168.595757][ C1] DEBUG: holding rtnl_mutex for 8638 jiffies.
[ 168.601896][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 168.613799][ C1] Call Trace:
[ 168.617126][ C1]
[ 168.620084][ C1] __schedule+0x17e8/0x4a20
[ 168.624813][ C1] ? __pfx___schedule+0x10/0x10
[ 168.629814][ C1] ? __pfx_lock_release+0x10/0x10
[ 168.634962][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 168.641087][ C1] ? schedule+0x90/0x320
[ 168.645377][ C1] schedule+0x14b/0x320
[ 168.649605][ C1] synchronize_rcu_expedited+0x684/0x830
[ 168.655272][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 168.661500][ C1] ? mark_lock+0x9a/0x360
[ 168.665938][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 168.671291][ C1] ? __pfx___might_resched+0x10/0x10
[ 168.676700][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 168.682833][ C1] synchronize_rcu+0x11b/0x360
[ 168.687678][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 168.692988][ C1] ? lockdep_unlock+0x16a/0x300
[ 168.697895][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 168.703512][ C1] lockdep_unregister_key+0x4b7/0x540
[ 168.709127][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 168.715179][ C1] ? rcu_is_watching+0x15/0xb0
[ 168.720419][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 168.725098][ C1] __qdisc_destroy+0x165/0x410
[ 168.730152][ C1] taprio_attach+0x24e/0x390
[ 168.734881][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 168.740088][ C1] qdisc_graft+0x128a/0x1580
[ 168.744733][ C1] ? qdisc_graft+0x301/0x1580
[ 168.749570][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 168.754658][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 168.759773][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 168.764669][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 168.770099][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 168.775418][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 168.780578][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 168.785869][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 168.791365][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 168.797503][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 168.804004][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 168.809453][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 168.814781][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 168.820312][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 168.825709][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 168.830888][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 168.836759][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 168.841895][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 168.847177][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 168.852469][ C1] ? ref_tracker_free+0x643/0x7e0
[ 168.857732][ C1] netlink_rcv_skb+0x1e3/0x430
[ 168.862526][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 168.868063][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 168.873489][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 168.878755][ C1] netlink_unicast+0x7ea/0x980
[ 168.883568][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 168.889085][ C1] ? __virt_addr_valid+0x183/0x520
[ 168.894229][ C1] ? __check_object_size+0x49c/0x900
[ 168.899675][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 168.904812][ C1] netlink_sendmsg+0x8db/0xcb0
[ 168.909648][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 168.914980][ C1] ? __import_iovec+0x536/0x820
[ 168.920111][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 168.925126][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 168.930612][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 168.936155][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 168.941465][ C1] __sock_sendmsg+0x221/0x270
[ 168.946205][ C1] ____sys_sendmsg+0x525/0x7d0
[ 168.951004][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 168.956375][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 168.960994][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 168.966217][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 168.972683][ C1] ? do_syscall_64+0x100/0x230
[ 168.977555][ C1] ? do_syscall_64+0xb6/0x230
[ 168.982257][ C1] do_syscall_64+0xf3/0x230
[ 168.986822][ C1] ? clear_bhb_loop+0x35/0x90
[ 168.991525][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 168.997845][ C1] RIP: 0033:0x7f33e447dda9
[ 169.002274][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 169.011002][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 169.019108][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 169.027160][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 169.035150][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 169.043171][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 169.051294][ C1]
[ 169.054324][ C1] DEBUG: waiting rtnl_mutex for 8682 jiffies.
[ 169.060783][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 169.071278][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 169.077393][ C1] Call Trace:
[ 169.080708][ C1]
[ 169.083664][ C1] __schedule+0x17e8/0x4a20
[ 169.088272][ C1] ? __pfx___schedule+0x10/0x10
[ 169.093239][ C1] ? __pfx_lock_release+0x10/0x10
[ 169.098416][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 169.103926][ C1] ? kthread_data+0x52/0xd0
[ 169.108493][ C1] ? schedule+0x90/0x320
[ 169.112756][ C1] ? wq_worker_sleeping+0x66/0x240
[ 169.118014][ C1] ? schedule+0x90/0x320
[ 169.122276][ C1] schedule+0x14b/0x320
[ 169.126494][ C1] schedule_preempt_disabled+0x13/0x30
[ 169.131989][ C1] __mutex_lock+0x6a4/0xd70
[ 169.136573][ C1] ? mark_lock+0x9a/0x360
[ 169.140931][ C1] ? __mutex_lock+0x527/0xd70
[ 169.145674][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 169.150854][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 169.156036][ C1] ? rtnl_lock+0xe7/0x130
[ 169.160399][ C1] addrconf_dad_work+0xd0/0x16f0
[ 169.165476][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 169.171006][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 169.177405][ C1] ? process_scheduled_works+0x945/0x1830
[ 169.183156][ C1] process_scheduled_works+0xa2c/0x1830
[ 169.188788][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 169.194804][ C1] ? assign_work+0x364/0x3d0
[ 169.199460][ C1] worker_thread+0x86d/0xd50
[ 169.204083][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 169.210121][ C1] ? __kthread_parkme+0x169/0x1d0
[ 169.215259][ C1] ? __pfx_worker_thread+0x10/0x10
[ 169.220508][ C1] kthread+0x2f0/0x390
[ 169.224600][ C1] ? __pfx_worker_thread+0x10/0x10
[ 169.229864][ C1] ? __pfx_kthread+0x10/0x10
[ 169.234672][ C1] ret_from_fork+0x4b/0x80
[ 169.239143][ C1] ? __pfx_kthread+0x10/0x10
[ 169.243755][ C1] ret_from_fork_asm+0x1a/0x30
[ 169.248592][ C1]
[ 169.251626][ C1]
[ 169.251626][ C1] Showing all locks held in the system:
[ 169.259389][ C1] 3 locks held by kworker/u8:4/61:
[ 169.264603][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 169.276267][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 169.289414][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 169.299114][ C1] 2 locks held by getty/4842:
[ 169.303807][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 169.313834][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 169.324193][ C1] 3 locks held by kworker/1:3/5108:
[ 169.329536][ C1] 2 locks held by syz-executor.0/5465:
[ 169.335024][ C1] 4 locks held by syz-executor.0/5468:
[ 169.340613][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 169.350357][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 169.360723][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 169.370560][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 169.380537][ C1] 1 lock held by sed/5467:
[ 169.384965][ C1]
[ 169.387339][ C1] =============================================
[ 169.387339][ C1]
[ 170.435769][ C1] DEBUG: holding rtnl_mutex for 8822 jiffies.
[ 170.441908][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 170.453727][ C1] Call Trace:
[ 170.457067][ C1]
[ 170.460074][ C1] __schedule+0x17e8/0x4a20
[ 170.464726][ C1] ? __pfx___schedule+0x10/0x10
[ 170.469736][ C1] ? __pfx_lock_release+0x10/0x10
[ 170.474985][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 170.481020][ C1] ? schedule+0x90/0x320
[ 170.485288][ C1] schedule+0x14b/0x320
[ 170.489532][ C1] synchronize_rcu_expedited+0x684/0x830
[ 170.495196][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 170.501627][ C1] ? mark_lock+0x9a/0x360
[ 170.506028][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 170.511342][ C1] ? __pfx___might_resched+0x10/0x10
[ 170.516681][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 170.522788][ C1] synchronize_rcu+0x11b/0x360
[ 170.527777][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 170.533113][ C1] ? lockdep_unlock+0x16a/0x300
[ 170.538040][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 170.543277][ C1] lockdep_unregister_key+0x4b7/0x540
[ 170.548717][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 170.554642][ C1] ? rcu_is_watching+0x15/0xb0
[ 170.559521][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 170.564167][ C1] __qdisc_destroy+0x165/0x410
[ 170.569093][ C1] taprio_attach+0x24e/0x390
[ 170.573718][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 170.579151][ C1] qdisc_graft+0x128a/0x1580
[ 170.583779][ C1] ? qdisc_graft+0x301/0x1580
[ 170.588523][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 170.593489][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 170.598584][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 170.603480][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 170.608946][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 170.614255][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 170.619350][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 170.624576][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 170.630524][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 170.636566][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 170.643036][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 170.648862][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 170.654179][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 170.659609][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 170.664922][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 170.670086][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 170.675871][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 170.681015][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 170.686288][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 170.691434][ C1] ? ref_tracker_free+0x643/0x7e0
[ 170.696525][ C1] netlink_rcv_skb+0x1e3/0x430
[ 170.701316][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 170.706925][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 170.712259][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 170.717587][ C1] netlink_unicast+0x7ea/0x980
[ 170.722415][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 170.727912][ C1] ? __virt_addr_valid+0x183/0x520
[ 170.733091][ C1] ? __check_object_size+0x49c/0x900
[ 170.738640][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 170.743881][ C1] netlink_sendmsg+0x8db/0xcb0
[ 170.748721][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 170.754035][ C1] ? __import_iovec+0x536/0x820
[ 170.758942][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 170.763905][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 170.769242][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 170.774727][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 170.780074][ C1] __sock_sendmsg+0x221/0x270
[ 170.785132][ C1] ____sys_sendmsg+0x525/0x7d0
[ 170.790060][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 170.795386][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 170.800119][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 170.805309][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 170.811694][ C1] ? do_syscall_64+0x100/0x230
[ 170.816778][ C1] ? do_syscall_64+0xb6/0x230
[ 170.821478][ C1] do_syscall_64+0xf3/0x230
[ 170.826036][ C1] ? clear_bhb_loop+0x35/0x90
[ 170.830741][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 170.836772][ C1] RIP: 0033:0x7f33e447dda9
[ 170.841211][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 170.849866][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 170.857896][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 170.865922][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 170.873918][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 170.881992][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 170.890073][ C1]
[ 170.893112][ C1] DEBUG: waiting rtnl_mutex for 8866 jiffies.
[ 170.899217][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 170.909453][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 170.915565][ C1] Call Trace:
[ 170.918899][ C1]
[ 170.921854][ C1] __schedule+0x17e8/0x4a20
[ 170.926439][ C1] ? __pfx___schedule+0x10/0x10
[ 170.931312][ C1] ? __pfx_lock_release+0x10/0x10
[ 170.936567][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 170.942055][ C1] ? kthread_data+0x52/0xd0
[ 170.946610][ C1] ? schedule+0x90/0x320
[ 170.950875][ C1] ? wq_worker_sleeping+0x66/0x240
[ 170.956045][ C1] ? schedule+0x90/0x320
[ 170.960308][ C1] schedule+0x14b/0x320
[ 170.964491][ C1] schedule_preempt_disabled+0x13/0x30
[ 170.970015][ C1] __mutex_lock+0x6a4/0xd70
[ 170.974541][ C1] ? mark_lock+0x9a/0x360
[ 170.978942][ C1] ? __mutex_lock+0x527/0xd70
[ 170.983645][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 170.988817][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 170.993901][ C1] ? rtnl_lock+0xe7/0x130
[ 170.998293][ C1] addrconf_dad_work+0xd0/0x16f0
[ 171.003270][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 171.008796][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 171.015164][ C1] ? process_scheduled_works+0x945/0x1830
[ 171.020947][ C1] process_scheduled_works+0xa2c/0x1830
[ 171.026644][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 171.032675][ C1] ? assign_work+0x364/0x3d0
[ 171.037388][ C1] worker_thread+0x86d/0xd50
[ 171.042031][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 171.048196][ C1] ? __kthread_parkme+0x169/0x1d0
[ 171.053292][ C1] ? __pfx_worker_thread+0x10/0x10
[ 171.058561][ C1] kthread+0x2f0/0x390
[ 171.062832][ C1] ? __pfx_worker_thread+0x10/0x10
[ 171.068116][ C1] ? __pfx_kthread+0x10/0x10
[ 171.072829][ C1] ret_from_fork+0x4b/0x80
[ 171.077339][ C1] ? __pfx_kthread+0x10/0x10
[ 171.081956][ C1] ret_from_fork_asm+0x1a/0x30
[ 171.086799][ C1]
[ 171.089857][ C1]
[ 171.089857][ C1] Showing all locks held in the system:
[ 171.097636][ C1] 3 locks held by kworker/u8:4/61:
[ 171.102822][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 171.114590][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 171.127730][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 171.137277][ C1] 2 locks held by getty/4842:
[ 171.141969][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 171.151844][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 171.162042][ C1] 3 locks held by kworker/1:3/5108:
[ 171.167300][ C1] 2 locks held by syz-executor.0/5465:
[ 171.172773][ C1] 4 locks held by syz-executor.0/5468:
[ 171.178285][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 171.187952][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 171.198288][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 171.208153][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 171.218695][ C1] 1 lock held by sed/5467:
[ 171.223216][ C1]
[ 171.225579][ C1] =============================================
[ 171.225579][ C1]
[ 172.275754][ C1] DEBUG: holding rtnl_mutex for 9006 jiffies.
[ 172.282176][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 172.294006][ C1] Call Trace:
[ 172.297350][ C1]
[ 172.300394][ C1] __schedule+0x17e8/0x4a20
[ 172.304963][ C1] ? __pfx___schedule+0x10/0x10
[ 172.309973][ C1] ? __pfx_lock_release+0x10/0x10
[ 172.315112][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 172.321177][ C1] ? schedule+0x90/0x320
[ 172.325452][ C1] schedule+0x14b/0x320
[ 172.329737][ C1] synchronize_rcu_expedited+0x684/0x830
[ 172.335491][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 172.341809][ C1] ? mark_lock+0x9a/0x360
[ 172.346198][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 172.351686][ C1] ? __pfx___might_resched+0x10/0x10
[ 172.357202][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 172.363479][ C1] synchronize_rcu+0x11b/0x360
[ 172.368306][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 172.373613][ C1] ? lockdep_unlock+0x16a/0x300
[ 172.378603][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 172.383835][ C1] lockdep_unregister_key+0x4b7/0x540
[ 172.389269][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 172.395197][ C1] ? rcu_is_watching+0x15/0xb0
[ 172.400196][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 172.404829][ C1] __qdisc_destroy+0x165/0x410
[ 172.409775][ C1] taprio_attach+0x24e/0x390
[ 172.414486][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 172.419655][ C1] qdisc_graft+0x128a/0x1580
[ 172.424271][ C1] ? qdisc_graft+0x301/0x1580
[ 172.429078][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 172.434062][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 172.439169][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 172.444067][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 172.449532][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 172.454923][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 172.460104][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 172.465429][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 172.470952][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 172.477004][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 172.483361][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 172.488793][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 172.494104][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 172.499614][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 172.504939][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 172.510233][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 172.516109][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 172.521239][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 172.526505][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 172.531743][ C1] ? ref_tracker_free+0x643/0x7e0
[ 172.536835][ C1] netlink_rcv_skb+0x1e3/0x430
[ 172.541632][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 172.547159][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 172.552579][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 172.557862][ C1] netlink_unicast+0x7ea/0x980
[ 172.562697][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 172.568039][ C1] ? __virt_addr_valid+0x183/0x520
[ 172.573238][ C1] ? __check_object_size+0x49c/0x900
[ 172.578638][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 172.583874][ C1] netlink_sendmsg+0x8db/0xcb0
[ 172.588727][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 172.594038][ C1] ? __import_iovec+0x536/0x820
[ 172.598948][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 172.603910][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 172.609352][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 172.615102][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 172.620442][ C1] __sock_sendmsg+0x221/0x270
[ 172.625152][ C1] ____sys_sendmsg+0x525/0x7d0
[ 172.629989][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 172.635411][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 172.640160][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 172.645360][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 172.651834][ C1] ? do_syscall_64+0x100/0x230
[ 172.656747][ C1] ? do_syscall_64+0xb6/0x230
[ 172.661443][ C1] do_syscall_64+0xf3/0x230
[ 172.665999][ C1] ? clear_bhb_loop+0x35/0x90
[ 172.670737][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 172.676681][ C1] RIP: 0033:0x7f33e447dda9
[ 172.681547][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 172.690014][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 172.698040][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 172.706062][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 172.714047][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 172.722066][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 172.730210][ C1]
[ 172.733348][ C1] DEBUG: waiting rtnl_mutex for 9050 jiffies.
[ 172.739463][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 172.749711][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 172.755859][ C1] Call Trace:
[ 172.759155][ C1]
[ 172.762102][ C1] __schedule+0x17e8/0x4a20
[ 172.766847][ C1] ? __pfx___schedule+0x10/0x10
[ 172.771760][ C1] ? __pfx_lock_release+0x10/0x10
[ 172.776909][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 172.782506][ C1] ? kthread_data+0x52/0xd0
[ 172.787082][ C1] ? schedule+0x90/0x320
[ 172.791349][ C1] ? wq_worker_sleeping+0x66/0x240
[ 172.796526][ C1] ? schedule+0x90/0x320
[ 172.800854][ C1] schedule+0x14b/0x320
[ 172.805063][ C1] schedule_preempt_disabled+0x13/0x30
[ 172.810729][ C1] __mutex_lock+0x6a4/0xd70
[ 172.815312][ C1] ? mark_lock+0x9a/0x360
[ 172.819859][ C1] ? __mutex_lock+0x527/0xd70
[ 172.824574][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 172.829943][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 172.835003][ C1] ? rtnl_lock+0xe7/0x130
[ 172.839484][ C1] addrconf_dad_work+0xd0/0x16f0
[ 172.844457][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 172.849978][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 172.856473][ C1] ? process_scheduled_works+0x945/0x1830
[ 172.862215][ C1] process_scheduled_works+0xa2c/0x1830
[ 172.867871][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 172.873882][ C1] ? assign_work+0x364/0x3d0
[ 172.878531][ C1] worker_thread+0x86d/0xd50
[ 172.883180][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 172.889195][ C1] ? __kthread_parkme+0x169/0x1d0
[ 172.894260][ C1] ? __pfx_worker_thread+0x10/0x10
[ 172.899433][ C1] kthread+0x2f0/0x390
[ 172.903526][ C1] ? __pfx_worker_thread+0x10/0x10
[ 172.908884][ C1] ? __pfx_kthread+0x10/0x10
[ 172.913499][ C1] ret_from_fork+0x4b/0x80
[ 172.917980][ C1] ? __pfx_kthread+0x10/0x10
[ 172.922906][ C1] ret_from_fork_asm+0x1a/0x30
[ 172.927830][ C1]
[ 172.930881][ C1]
[ 172.930881][ C1] Showing all locks held in the system:
[ 172.938789][ C1] 3 locks held by kworker/u8:4/61:
[ 172.943924][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 172.955814][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 172.968766][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 172.978550][ C1] 2 locks held by getty/4842:
[ 172.983337][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 172.993282][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 173.003650][ C1] 3 locks held by kworker/1:3/5108:
[ 173.008924][ C1] 2 locks held by syz-executor.0/5465:
[ 173.014400][ C1] 4 locks held by syz-executor.0/5468:
[ 173.020245][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 173.029992][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 173.040177][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 173.050017][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 173.060157][ C1] 2 locks held by sed/5467:
[ 173.064845][ C1]
[ 173.067217][ C1] =============================================
[ 173.067217][ C1]
[ 174.115766][ C1] DEBUG: holding rtnl_mutex for 9190 jiffies.
[ 174.121896][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 174.133713][ C1] Call Trace:
[ 174.137062][ C1]
[ 174.140095][ C1] __schedule+0x17e8/0x4a20
[ 174.144652][ C1] ? __pfx___schedule+0x10/0x10
[ 174.149564][ C1] ? __pfx_lock_release+0x10/0x10
[ 174.154619][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 174.160584][ C1] ? schedule+0x90/0x320
[ 174.164881][ C1] schedule+0x14b/0x320
[ 174.169101][ C1] synchronize_rcu_expedited+0x684/0x830
[ 174.174797][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 174.181031][ C1] ? mark_lock+0x9a/0x360
[ 174.185392][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 174.190823][ C1] ? __pfx___might_resched+0x10/0x10
[ 174.196166][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 174.202352][ C1] synchronize_rcu+0x11b/0x360
[ 174.207174][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 174.212568][ C1] ? lockdep_unlock+0x16a/0x300
[ 174.217472][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 174.222786][ C1] lockdep_unregister_key+0x4b7/0x540
[ 174.228214][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 174.234136][ C1] ? rcu_is_watching+0x15/0xb0
[ 174.238953][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 174.243569][ C1] __qdisc_destroy+0x165/0x410
[ 174.248480][ C1] taprio_attach+0x24e/0x390
[ 174.253102][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 174.258272][ C1] qdisc_graft+0x128a/0x1580
[ 174.262887][ C1] ? qdisc_graft+0x301/0x1580
[ 174.268216][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 174.273246][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 174.278479][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 174.283384][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 174.288779][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 174.294091][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 174.299190][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 174.304519][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 174.310044][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 174.316103][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 174.322465][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 174.327977][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 174.333431][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 174.338994][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 174.344325][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 174.349519][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 174.355381][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 174.360605][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 174.365896][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 174.371477][ C1] ? ref_tracker_free+0x643/0x7e0
[ 174.376562][ C1] netlink_rcv_skb+0x1e3/0x430
[ 174.381443][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 174.386975][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 174.392399][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 174.397750][ C1] netlink_unicast+0x7ea/0x980
[ 174.402821][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 174.408173][ C1] ? __virt_addr_valid+0x183/0x520
[ 174.413316][ C1] ? __check_object_size+0x49c/0x900
[ 174.418714][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 174.423898][ C1] netlink_sendmsg+0x8db/0xcb0
[ 174.428786][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 174.434104][ C1] ? __import_iovec+0x536/0x820
[ 174.439009][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 174.443968][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 174.449313][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 174.455061][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 174.460398][ C1] __sock_sendmsg+0x221/0x270
[ 174.465111][ C1] ____sys_sendmsg+0x525/0x7d0
[ 174.470007][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 174.475363][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 174.480085][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 174.485309][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 174.491759][ C1] ? do_syscall_64+0x100/0x230
[ 174.496746][ C1] ? do_syscall_64+0xb6/0x230
[ 174.501461][ C1] do_syscall_64+0xf3/0x230
[ 174.506203][ C1] ? clear_bhb_loop+0x35/0x90
[ 174.510919][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 174.516868][ C1] RIP: 0033:0x7f33e447dda9
[ 174.521299][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 174.529782][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 174.537816][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 174.546010][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 174.554082][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 174.562254][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 174.570318][ C1]
[ 174.573355][ C1] DEBUG: waiting rtnl_mutex for 9234 jiffies.
[ 174.579468][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 174.589699][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 174.595754][ C1] Call Trace:
[ 174.599221][ C1]
[ 174.602172][ C1] __schedule+0x17e8/0x4a20
[ 174.606762][ C1] ? __pfx___schedule+0x10/0x10
[ 174.611665][ C1] ? __pfx_lock_release+0x10/0x10
[ 174.616743][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 174.622230][ C1] ? kthread_data+0x52/0xd0
[ 174.626999][ C1] ? schedule+0x90/0x320
[ 174.631353][ C1] ? wq_worker_sleeping+0x66/0x240
[ 174.636647][ C1] ? schedule+0x90/0x320
[ 174.641167][ C1] schedule+0x14b/0x320
[ 174.645372][ C1] schedule_preempt_disabled+0x13/0x30
[ 174.651035][ C1] __mutex_lock+0x6a4/0xd70
[ 174.655790][ C1] ? mark_lock+0x9a/0x360
[ 174.660171][ C1] ? __mutex_lock+0x527/0xd70
[ 174.664912][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 174.670336][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 174.675415][ C1] ? rtnl_lock+0xe7/0x130
[ 174.679810][ C1] addrconf_dad_work+0xd0/0x16f0
[ 174.684903][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 174.690479][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 174.696921][ C1] ? process_scheduled_works+0x945/0x1830
[ 174.702667][ C1] process_scheduled_works+0xa2c/0x1830
[ 174.708423][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 174.714548][ C1] ? assign_work+0x364/0x3d0
[ 174.719418][ C1] worker_thread+0x86d/0xd50
[ 174.724045][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 174.730058][ C1] ? __kthread_parkme+0x169/0x1d0
[ 174.735131][ C1] ? __pfx_worker_thread+0x10/0x10
[ 174.740309][ C1] kthread+0x2f0/0x390
[ 174.744409][ C1] ? __pfx_worker_thread+0x10/0x10
[ 174.749591][ C1] ? __pfx_kthread+0x10/0x10
[ 174.754383][ C1] ret_from_fork+0x4b/0x80
[ 174.758869][ C1] ? __pfx_kthread+0x10/0x10
[ 174.763484][ C1] ret_from_fork_asm+0x1a/0x30
[ 174.768329][ C1]
[ 174.771362][ C1]
[ 174.771362][ C1] Showing all locks held in the system:
[ 174.779183][ C1] 3 locks held by kworker/u8:4/61:
[ 174.784316][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 174.795997][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 174.809311][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 174.818927][ C1] 2 locks held by getty/4842:
[ 174.823613][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 174.833456][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 174.843651][ C1] 3 locks held by kworker/1:3/5108:
[ 174.848985][ C1] 2 locks held by syz-executor.0/5465:
[ 174.854455][ C1] 4 locks held by syz-executor.0/5468:
[ 174.859953][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 174.869693][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 174.879876][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 174.889894][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 174.899830][ C1] 2 locks held by sed/5467:
[ 174.904364][ C1]
[ 174.906738][ C1] =============================================
[ 174.906738][ C1]
[ 175.955755][ C1] DEBUG: holding rtnl_mutex for 9374 jiffies.
[ 175.961908][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 175.973768][ C1] Call Trace:
[ 175.977094][ C1]
[ 175.980123][ C1] __schedule+0x17e8/0x4a20
[ 175.984683][ C1] ? __pfx___schedule+0x10/0x10
[ 175.989597][ C1] ? __pfx_lock_release+0x10/0x10
[ 175.994644][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 176.000704][ C1] ? schedule+0x90/0x320
[ 176.004966][ C1] schedule+0x14b/0x320
[ 176.009272][ C1] synchronize_rcu_expedited+0x684/0x830
[ 176.014944][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 176.021173][ C1] ? mark_lock+0x9a/0x360
[ 176.025526][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 176.030872][ C1] ? __pfx___might_resched+0x10/0x10
[ 176.036381][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 176.042495][ C1] synchronize_rcu+0x11b/0x360
[ 176.047320][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 176.052658][ C1] ? lockdep_unlock+0x16a/0x300
[ 176.057577][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 176.062805][ C1] lockdep_unregister_key+0x4b7/0x540
[ 176.068340][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 176.074261][ C1] ? rcu_is_watching+0x15/0xb0
[ 176.079077][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 176.083784][ C1] __qdisc_destroy+0x165/0x410
[ 176.088644][ C1] taprio_attach+0x24e/0x390
[ 176.093267][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 176.098435][ C1] qdisc_graft+0x128a/0x1580
[ 176.103056][ C1] ? qdisc_graft+0x301/0x1580
[ 176.107797][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 176.112758][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 176.117844][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 176.122735][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 176.128099][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 176.133403][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 176.138486][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 176.143720][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 176.149248][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 176.155252][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 176.161637][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 176.167064][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 176.172287][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 176.177724][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 176.183300][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 176.188549][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 176.194291][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 176.199450][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 176.204690][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 176.209883][ C1] ? ref_tracker_free+0x643/0x7e0
[ 176.214931][ C1] netlink_rcv_skb+0x1e3/0x430
[ 176.219930][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 176.225418][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 176.230780][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 176.236033][ C1] netlink_unicast+0x7ea/0x980
[ 176.240912][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 176.246260][ C1] ? __virt_addr_valid+0x183/0x520
[ 176.251399][ C1] ? __check_object_size+0x49c/0x900
[ 176.256817][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 176.262041][ C1] netlink_sendmsg+0x8db/0xcb0
[ 176.266878][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 176.272187][ C1] ? __import_iovec+0x536/0x820
[ 176.277105][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 176.282067][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 176.287451][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 176.292985][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 176.298350][ C1] __sock_sendmsg+0x221/0x270
[ 176.303070][ C1] ____sys_sendmsg+0x525/0x7d0
[ 176.307925][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 176.313258][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 176.317912][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 176.323091][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 176.329480][ C1] ? do_syscall_64+0x100/0x230
[ 176.334264][ C1] ? do_syscall_64+0xb6/0x230
[ 176.338991][ C1] do_syscall_64+0xf3/0x230
[ 176.343704][ C1] ? clear_bhb_loop+0x35/0x90
[ 176.348527][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 176.354531][ C1] RIP: 0033:0x7f33e447dda9
[ 176.359000][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 176.367475][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 176.375463][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 176.383504][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 176.391620][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 176.399637][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 176.407669][ C1]
[ 176.410702][ C1] DEBUG: waiting rtnl_mutex for 9418 jiffies.
[ 176.417013][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 176.427260][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 176.433276][ C1] Call Trace:
[ 176.436608][ C1]
[ 176.439558][ C1] __schedule+0x17e8/0x4a20
[ 176.444110][ C1] ? __pfx___schedule+0x10/0x10
[ 176.449023][ C1] ? __pfx_lock_release+0x10/0x10
[ 176.454081][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 176.459768][ C1] ? kthread_data+0x52/0xd0
[ 176.464297][ C1] ? schedule+0x90/0x320
[ 176.468686][ C1] ? wq_worker_sleeping+0x66/0x240
[ 176.473907][ C1] ? schedule+0x90/0x320
[ 176.478211][ C1] schedule+0x14b/0x320
[ 176.482392][ C1] schedule_preempt_disabled+0x13/0x30
[ 176.487998][ C1] __mutex_lock+0x6a4/0xd70
[ 176.492782][ C1] ? mark_lock+0x9a/0x360
[ 176.497259][ C1] ? __mutex_lock+0x527/0xd70
[ 176.502048][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 176.507227][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 176.512286][ C1] ? rtnl_lock+0xe7/0x130
[ 176.516759][ C1] addrconf_dad_work+0xd0/0x16f0
[ 176.521733][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 176.527244][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 176.533608][ C1] ? process_scheduled_works+0x945/0x1830
[ 176.539390][ C1] process_scheduled_works+0xa2c/0x1830
[ 176.545033][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 176.551213][ C1] ? assign_work+0x364/0x3d0
[ 176.555872][ C1] worker_thread+0x86d/0xd50
[ 176.560500][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 176.566456][ C1] ? __kthread_parkme+0x169/0x1d0
[ 176.571514][ C1] ? __pfx_worker_thread+0x10/0x10
[ 176.576683][ C1] kthread+0x2f0/0x390
[ 176.581123][ C1] ? __pfx_worker_thread+0x10/0x10
[ 176.586288][ C1] ? __pfx_kthread+0x10/0x10
[ 176.590931][ C1] ret_from_fork+0x4b/0x80
[ 176.595390][ C1] ? __pfx_kthread+0x10/0x10
[ 176.600167][ C1] ret_from_fork_asm+0x1a/0x30
[ 176.605063][ C1]
[ 176.608142][ C1]
[ 176.608142][ C1] Showing all locks held in the system:
[ 176.615904][ C1] 3 locks held by kworker/u8:4/61:
[ 176.621026][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 176.632876][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 176.646189][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 176.655684][ C1] 2 locks held by getty/4842:
[ 176.660471][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 176.670356][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 176.680551][ C1] 3 locks held by kworker/1:3/5108:
[ 176.685810][ C1] 2 locks held by syz-executor.0/5465:
[ 176.691372][ C1] 4 locks held by syz-executor.0/5468:
[ 176.696877][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 176.706633][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 176.716836][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 176.726682][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 176.736750][ C1] 2 locks held by sed/5467:
[ 176.741267][ C1]
[ 176.743603][ C1] =============================================
[ 176.743603][ C1]
[ 177.795764][ C1] DEBUG: holding rtnl_mutex for 9558 jiffies.
[ 177.801901][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 177.813837][ C1] Call Trace:
[ 177.817176][ C1]
[ 177.820128][ C1] __schedule+0x17e8/0x4a20
[ 177.824706][ C1] ? __pfx___schedule+0x10/0x10
[ 177.829624][ C1] ? __pfx_lock_release+0x10/0x10
[ 177.834678][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 177.840653][ C1] ? schedule+0x90/0x320
[ 177.844919][ C1] schedule+0x14b/0x320
[ 177.849227][ C1] synchronize_rcu_expedited+0x684/0x830
[ 177.855073][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 177.861319][ C1] ? mark_lock+0x9a/0x360
[ 177.865884][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 177.871197][ C1] ? __pfx___might_resched+0x10/0x10
[ 177.876545][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 177.882682][ C1] synchronize_rcu+0x11b/0x360
[ 177.887531][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 177.892856][ C1] ? lockdep_unlock+0x16a/0x300
[ 177.897765][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 177.902995][ C1] lockdep_unregister_key+0x4b7/0x540
[ 177.908444][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 177.914371][ C1] ? rcu_is_watching+0x15/0xb0
[ 177.919203][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 177.923826][ C1] __qdisc_destroy+0x165/0x410
[ 177.928659][ C1] taprio_attach+0x24e/0x390
[ 177.933286][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 177.938472][ C1] qdisc_graft+0x128a/0x1580
[ 177.943100][ C1] ? qdisc_graft+0x301/0x1580
[ 177.947853][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 177.952819][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 177.957910][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 177.962811][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 177.968182][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 177.973492][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 177.978584][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 177.983825][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 177.989362][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 177.995382][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 178.001769][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 178.007195][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 178.012423][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 178.017851][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 178.023170][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 178.028439][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 178.034192][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 178.039443][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 178.044683][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 178.049869][ C1] ? ref_tracker_free+0x643/0x7e0
[ 178.055103][ C1] netlink_rcv_skb+0x1e3/0x430
[ 178.059934][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 178.065976][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 178.071401][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 178.076924][ C1] netlink_unicast+0x7ea/0x980
[ 178.081749][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 178.087145][ C1] ? __virt_addr_valid+0x183/0x520
[ 178.092403][ C1] ? __check_object_size+0x49c/0x900
[ 178.097757][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 178.102897][ C1] netlink_sendmsg+0x8db/0xcb0
[ 178.107823][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 178.113136][ C1] ? __import_iovec+0x536/0x820
[ 178.118087][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 178.123088][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 178.128740][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 178.134270][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 178.139702][ C1] __sock_sendmsg+0x221/0x270
[ 178.144510][ C1] ____sys_sendmsg+0x525/0x7d0
[ 178.149432][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 178.154939][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 178.159599][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 178.165130][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 178.171612][ C1] ? do_syscall_64+0x100/0x230
[ 178.176440][ C1] ? do_syscall_64+0xb6/0x230
[ 178.181143][ C1] do_syscall_64+0xf3/0x230
[ 178.185670][ C1] ? clear_bhb_loop+0x35/0x90
[ 178.190408][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 178.196362][ C1] RIP: 0033:0x7f33e447dda9
[ 178.200798][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 178.209270][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 178.217294][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 178.225545][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 178.233662][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 178.241678][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 178.249892][ C1]
[ 178.253014][ C1] DEBUG: waiting rtnl_mutex for 9602 jiffies.
[ 178.259120][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 178.269350][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 178.275463][ C1] Call Trace:
[ 178.278790][ C1]
[ 178.281737][ C1] __schedule+0x17e8/0x4a20
[ 178.286324][ C1] ? __pfx___schedule+0x10/0x10
[ 178.291202][ C1] ? __pfx_lock_release+0x10/0x10
[ 178.296295][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 178.301793][ C1] ? kthread_data+0x52/0xd0
[ 178.306349][ C1] ? schedule+0x90/0x320
[ 178.310699][ C1] ? wq_worker_sleeping+0x66/0x240
[ 178.315953][ C1] ? schedule+0x90/0x320
[ 178.320302][ C1] schedule+0x14b/0x320
[ 178.324673][ C1] schedule_preempt_disabled+0x13/0x30
[ 178.330189][ C1] __mutex_lock+0x6a4/0xd70
[ 178.334800][ C1] ? mark_lock+0x9a/0x360
[ 178.339196][ C1] ? __mutex_lock+0x527/0xd70
[ 178.344079][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 178.349259][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 178.354329][ C1] ? rtnl_lock+0xe7/0x130
[ 178.358810][ C1] addrconf_dad_work+0xd0/0x16f0
[ 178.363810][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 178.369330][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 178.375696][ C1] ? process_scheduled_works+0x945/0x1830
[ 178.381481][ C1] process_scheduled_works+0xa2c/0x1830
[ 178.387110][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 178.393120][ C1] ? assign_work+0x364/0x3d0
[ 178.397862][ C1] worker_thread+0x86d/0xd50
[ 178.402572][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 178.408529][ C1] ? __kthread_parkme+0x169/0x1d0
[ 178.413586][ C1] ? __pfx_worker_thread+0x10/0x10
[ 178.418754][ C1] kthread+0x2f0/0x390
[ 178.422865][ C1] ? __pfx_worker_thread+0x10/0x10
[ 178.428036][ C1] ? __pfx_kthread+0x10/0x10
[ 178.432653][ C1] ret_from_fork+0x4b/0x80
[ 178.437136][ C1] ? __pfx_kthread+0x10/0x10
[ 178.441751][ C1] ret_from_fork_asm+0x1a/0x30
[ 178.446589][ C1]
[ 178.449633][ C1]
[ 178.449633][ C1] Showing all locks held in the system:
[ 178.457491][ C1] 3 locks held by kworker/u8:4/61:
[ 178.462616][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 178.474292][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 178.487398][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 178.497213][ C1] 2 locks held by getty/4842:
[ 178.501990][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 178.511940][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 178.522275][ C1] 3 locks held by kworker/1:3/5108:
[ 178.527601][ C1] 2 locks held by syz-executor.0/5465:
[ 178.533516][ C1] 4 locks held by syz-executor.0/5468:
[ 178.539113][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 178.549139][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 178.559397][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 178.569271][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 178.579220][ C1] 2 locks held by sed/5467:
[ 178.583746][ C1]
[ 178.586119][ C1] =============================================
[ 178.586119][ C1]
[ 179.635752][ C1] DEBUG: holding rtnl_mutex for 9742 jiffies.
[ 179.641883][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 179.653712][ C1] Call Trace:
[ 179.657058][ C1]
[ 179.660020][ C1] __schedule+0x17e8/0x4a20
[ 179.664580][ C1] ? __pfx___schedule+0x10/0x10
[ 179.669589][ C1] ? __pfx_lock_release+0x10/0x10
[ 179.674634][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 179.680863][ C1] ? schedule+0x90/0x320
[ 179.685291][ C1] schedule+0x14b/0x320
[ 179.689683][ C1] synchronize_rcu_expedited+0x684/0x830
[ 179.695352][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 179.701674][ C1] ? mark_lock+0x9a/0x360
[ 179.706077][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 179.711748][ C1] ? __pfx___might_resched+0x10/0x10
[ 179.717098][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 179.723203][ C1] synchronize_rcu+0x11b/0x360
[ 179.728027][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 179.733421][ C1] ? lockdep_unlock+0x16a/0x300
[ 179.738340][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 179.743778][ C1] lockdep_unregister_key+0x4b7/0x540
[ 179.749292][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 179.755220][ C1] ? rcu_is_watching+0x15/0xb0
[ 179.760050][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 179.764682][ C1] __qdisc_destroy+0x165/0x410
[ 179.769514][ C1] taprio_attach+0x24e/0x390
[ 179.774232][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 179.779412][ C1] qdisc_graft+0x128a/0x1580
[ 179.784027][ C1] ? qdisc_graft+0x301/0x1580
[ 179.788773][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 179.793736][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 179.798913][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 179.803946][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 179.809385][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 179.814796][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 179.820337][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 179.825778][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 179.831299][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 179.837390][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 179.843766][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 179.849224][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 179.854448][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 179.859882][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 179.865202][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 179.870370][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 179.876165][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 179.881306][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 179.886581][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 179.891728][ C1] ? ref_tracker_free+0x643/0x7e0
[ 179.896820][ C1] netlink_rcv_skb+0x1e3/0x430
[ 179.901614][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 179.907147][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 179.912493][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 179.917746][ C1] netlink_unicast+0x7ea/0x980
[ 179.922721][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 179.928071][ C1] ? __virt_addr_valid+0x183/0x520
[ 179.933209][ C1] ? __check_object_size+0x49c/0x900
[ 179.938551][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 179.943773][ C1] netlink_sendmsg+0x8db/0xcb0
[ 179.948606][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 179.954006][ C1] ? __import_iovec+0x536/0x820
[ 179.959176][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 179.964241][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 179.969573][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 179.975080][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 179.980418][ C1] __sock_sendmsg+0x221/0x270
[ 179.985140][ C1] ____sys_sendmsg+0x525/0x7d0
[ 179.989978][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 179.995398][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 180.000131][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 180.005307][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 180.011713][ C1] ? do_syscall_64+0x100/0x230
[ 180.016622][ C1] ? do_syscall_64+0xb6/0x230
[ 180.021322][ C1] do_syscall_64+0xf3/0x230
[ 180.025879][ C1] ? clear_bhb_loop+0x35/0x90
[ 180.030584][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 180.036525][ C1] RIP: 0033:0x7f33e447dda9
[ 180.040955][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 180.049514][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 180.057628][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 180.065619][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 180.073639][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 180.081755][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 180.089791][ C1]
[ 180.092910][ C1] DEBUG: waiting rtnl_mutex for 9786 jiffies.
[ 180.099030][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 180.109256][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 180.115271][ C1] Call Trace:
[ 180.118601][ C1]
[ 180.121665][ C1] __schedule+0x17e8/0x4a20
[ 180.126311][ C1] ? __pfx___schedule+0x10/0x10
[ 180.131227][ C1] ? __pfx_lock_release+0x10/0x10
[ 180.136383][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 180.141998][ C1] ? kthread_data+0x52/0xd0
[ 180.146655][ C1] ? schedule+0x90/0x320
[ 180.151037][ C1] ? wq_worker_sleeping+0x66/0x240
[ 180.156265][ C1] ? schedule+0x90/0x320
[ 180.160538][ C1] schedule+0x14b/0x320
[ 180.164722][ C1] schedule_preempt_disabled+0x13/0x30
[ 180.170251][ C1] __mutex_lock+0x6a4/0xd70
[ 180.174778][ C1] ? mark_lock+0x9a/0x360
[ 180.179176][ C1] ? __mutex_lock+0x527/0xd70
[ 180.183879][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 180.189074][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 180.194133][ C1] ? rtnl_lock+0xe7/0x130
[ 180.198512][ C1] addrconf_dad_work+0xd0/0x16f0
[ 180.203755][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 180.209583][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 180.215997][ C1] ? process_scheduled_works+0x945/0x1830
[ 180.221927][ C1] process_scheduled_works+0xa2c/0x1830
[ 180.227645][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 180.233682][ C1] ? assign_work+0x364/0x3d0
[ 180.238327][ C1] worker_thread+0x86d/0xd50
[ 180.242960][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 180.249271][ C1] ? __kthread_parkme+0x169/0x1d0
[ 180.254316][ C1] ? __pfx_worker_thread+0x10/0x10
[ 180.259497][ C1] kthread+0x2f0/0x390
[ 180.263589][ C1] ? __pfx_worker_thread+0x10/0x10
[ 180.268838][ C1] ? __pfx_kthread+0x10/0x10
[ 180.273486][ C1] ret_from_fork+0x4b/0x80
[ 180.278107][ C1] ? __pfx_kthread+0x10/0x10
[ 180.282746][ C1] ret_from_fork_asm+0x1a/0x30
[ 180.287603][ C1]
[ 180.290640][ C1]
[ 180.290640][ C1] Showing all locks held in the system:
[ 180.298402][ C1] 3 locks held by kworker/u8:4/61:
[ 180.303609][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 180.315281][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 180.328157][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 180.337772][ C1] 2 locks held by getty/4842:
[ 180.342630][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 180.352529][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 180.362757][ C1] 3 locks held by kworker/1:3/5108:
[ 180.368010][ C1] 2 locks held by syz-executor.0/5465:
[ 180.373484][ C1] 4 locks held by syz-executor.0/5468:
[ 180.379179][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 180.388936][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 180.399120][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 180.409051][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 180.418975][ C1] 2 locks held by sed/5467:
[ 180.423495][ C1]
[ 180.425861][ C1] =============================================
[ 180.425861][ C1]
[ 181.475759][ C1] DEBUG: holding rtnl_mutex for 9926 jiffies.
[ 181.481926][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 181.493912][ C1] Call Trace:
[ 181.497320][ C1]
[ 181.500314][ C1] __schedule+0x17e8/0x4a20
[ 181.504909][ C1] ? __pfx___schedule+0x10/0x10
[ 181.509850][ C1] ? __pfx_lock_release+0x10/0x10
[ 181.514899][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 181.520953][ C1] ? schedule+0x90/0x320
[ 181.525364][ C1] schedule+0x14b/0x320
[ 181.529717][ C1] synchronize_rcu_expedited+0x684/0x830
[ 181.535611][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 181.541893][ C1] ? mark_lock+0x9a/0x360
[ 181.546293][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 181.551607][ C1] ? __pfx___might_resched+0x10/0x10
[ 181.556960][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 181.563070][ C1] synchronize_rcu+0x11b/0x360
[ 181.567895][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 181.573204][ C1] ? lockdep_unlock+0x16a/0x300
[ 181.578107][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 181.583337][ C1] lockdep_unregister_key+0x4b7/0x540
[ 181.588840][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 181.594860][ C1] ? rcu_is_watching+0x15/0xb0
[ 181.599700][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 181.604320][ C1] __qdisc_destroy+0x165/0x410
[ 181.609156][ C1] taprio_attach+0x24e/0x390
[ 181.613789][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 181.618962][ C1] qdisc_graft+0x128a/0x1580
[ 181.623592][ C1] ? qdisc_graft+0x301/0x1580
[ 181.628333][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 181.633294][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 181.638462][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 181.643362][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 181.649171][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 181.654482][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 181.659578][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 181.664806][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 181.670414][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 181.676454][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 181.682817][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 181.688411][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 181.693634][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 181.699234][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 181.704546][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 181.709714][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 181.715492][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 181.720744][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 181.726039][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 181.731188][ C1] ? ref_tracker_free+0x643/0x7e0
[ 181.736284][ C1] netlink_rcv_skb+0x1e3/0x430
[ 181.741078][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 181.746617][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 181.751988][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 181.757325][ C1] netlink_unicast+0x7ea/0x980
[ 181.762139][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 181.767485][ C1] ? __virt_addr_valid+0x183/0x520
[ 181.772631][ C1] ? __check_object_size+0x49c/0x900
[ 181.777977][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 181.783119][ C1] netlink_sendmsg+0x8db/0xcb0
[ 181.787994][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 181.793308][ C1] ? __import_iovec+0x536/0x820
[ 181.798210][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 181.803174][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 181.808521][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 181.814015][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 181.819372][ C1] __sock_sendmsg+0x221/0x270
[ 181.824259][ C1] ____sys_sendmsg+0x525/0x7d0
[ 181.829096][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 181.834421][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 181.839070][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 181.844252][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 181.850824][ C1] ? do_syscall_64+0x100/0x230
[ 181.855641][ C1] ? do_syscall_64+0xb6/0x230
[ 181.860430][ C1] do_syscall_64+0xf3/0x230
[ 181.865007][ C1] ? clear_bhb_loop+0x35/0x90
[ 181.869770][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 181.875688][ C1] RIP: 0033:0x7f33e447dda9
[ 181.880158][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 181.888628][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 181.896823][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 181.904816][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 181.912831][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 181.920902][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 181.929088][ C1]
[ 181.932140][ C1] DEBUG: waiting rtnl_mutex for 9970 jiffies.
[ 181.938263][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 181.948501][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 181.954520][ C1] Call Trace:
[ 181.957843][ C1]
[ 181.960889][ C1] __schedule+0x17e8/0x4a20
[ 181.965472][ C1] ? __pfx___schedule+0x10/0x10
[ 181.970427][ C1] ? __pfx_lock_release+0x10/0x10
[ 181.975485][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 181.981021][ C1] ? kthread_data+0x52/0xd0
[ 181.985637][ C1] ? schedule+0x90/0x320
[ 181.989942][ C1] ? wq_worker_sleeping+0x66/0x240
[ 181.995088][ C1] ? schedule+0x90/0x320
[ 181.999388][ C1] schedule+0x14b/0x320
[ 182.003568][ C1] schedule_preempt_disabled+0x13/0x30
[ 182.009077][ C1] __mutex_lock+0x6a4/0xd70
[ 182.013601][ C1] ? mark_lock+0x9a/0x360
[ 182.018013][ C1] ? __mutex_lock+0x527/0xd70
[ 182.022711][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 182.027892][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 182.033048][ C1] ? rtnl_lock+0xe7/0x130
[ 182.037430][ C1] addrconf_dad_work+0xd0/0x16f0
[ 182.042403][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 182.047931][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 182.054295][ C1] ? process_scheduled_works+0x945/0x1830
[ 182.060066][ C1] process_scheduled_works+0xa2c/0x1830
[ 182.065799][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 182.071810][ C1] ? assign_work+0x364/0x3d0
[ 182.076543][ C1] worker_thread+0x86d/0xd50
[ 182.081175][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 182.087132][ C1] ? __kthread_parkme+0x169/0x1d0
[ 182.092274][ C1] ? __pfx_worker_thread+0x10/0x10
[ 182.097441][ C1] kthread+0x2f0/0x390
[ 182.101536][ C1] ? __pfx_worker_thread+0x10/0x10
[ 182.106954][ C1] ? __pfx_kthread+0x10/0x10
[ 182.111581][ C1] ret_from_fork+0x4b/0x80
[ 182.116081][ C1] ? __pfx_kthread+0x10/0x10
[ 182.120696][ C1] ret_from_fork_asm+0x1a/0x30
[ 182.125501][ C1]
[ 182.128663][ C1]
[ 182.128663][ C1] Showing all locks held in the system:
[ 182.136511][ C1] 3 locks held by kworker/u8:4/61:
[ 182.141727][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 182.153530][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 182.166613][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 182.176236][ C1] 2 locks held by getty/4842:
[ 182.180951][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 182.190798][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 182.201071][ C1] 3 locks held by kworker/1:3/5108:
[ 182.206320][ C1] 2 locks held by syz-executor.0/5465:
[ 182.211785][ C1] 4 locks held by syz-executor.0/5468:
[ 182.217284][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 182.227027][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 182.237206][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 182.247044][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 182.256977][ C1] 2 locks held by sed/5467:
[ 182.261489][ C1]
[ 182.263822][ C1] =============================================
[ 182.263822][ C1]
[ 183.315760][ C1] DEBUG: holding rtnl_mutex for 10110 jiffies.
[ 183.321988][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 183.333811][ C1] Call Trace:
[ 183.337138][ C1]
[ 183.340096][ C1] __schedule+0x17e8/0x4a20
[ 183.344660][ C1] ? __pfx___schedule+0x10/0x10
[ 183.349576][ C1] ? __pfx_lock_release+0x10/0x10
[ 183.354624][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 183.360592][ C1] ? schedule+0x90/0x320
[ 183.364859][ C1] schedule+0x14b/0x320
[ 183.369077][ C1] synchronize_rcu_expedited+0x684/0x830
[ 183.374754][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 183.381069][ C1] ? mark_lock+0x9a/0x360
[ 183.385430][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 183.390777][ C1] ? __pfx___might_resched+0x10/0x10
[ 183.396115][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 183.402218][ C1] synchronize_rcu+0x11b/0x360
[ 183.407044][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 183.412351][ C1] ? lockdep_unlock+0x16a/0x300
[ 183.417252][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 183.422486][ C1] lockdep_unregister_key+0x4b7/0x540
[ 183.427921][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 183.433840][ C1] ? rcu_is_watching+0x15/0xb0
[ 183.438666][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 183.443288][ C1] __qdisc_destroy+0x165/0x410
[ 183.448200][ C1] taprio_attach+0x24e/0x390
[ 183.452836][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 183.458008][ C1] qdisc_graft+0x128a/0x1580
[ 183.462637][ C1] ? qdisc_graft+0x301/0x1580
[ 183.467462][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 183.472424][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 183.477511][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 183.482513][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 183.487944][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 183.493266][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 183.498424][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 183.503670][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 183.509208][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 183.515319][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 183.521807][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 183.527296][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 183.532538][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 183.537965][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 183.543359][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 183.548527][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 183.554272][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 183.559526][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 183.564760][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 183.569933][ C1] ? ref_tracker_free+0x643/0x7e0
[ 183.574989][ C1] netlink_rcv_skb+0x1e3/0x430
[ 183.579897][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 183.585390][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 183.590813][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 183.596074][ C1] netlink_unicast+0x7ea/0x980
[ 183.600877][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 183.606212][ C1] ? __virt_addr_valid+0x183/0x520
[ 183.611350][ C1] ? __check_object_size+0x49c/0x900
[ 183.616690][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 183.621920][ C1] netlink_sendmsg+0x8db/0xcb0
[ 183.626765][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 183.632074][ C1] ? __import_iovec+0x536/0x820
[ 183.636979][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 183.641934][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 183.647321][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 183.652918][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 183.658375][ C1] __sock_sendmsg+0x221/0x270
[ 183.663088][ C1] ____sys_sendmsg+0x525/0x7d0
[ 183.667921][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 183.673245][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 183.677982][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 183.683179][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 183.689631][ C1] ? do_syscall_64+0x100/0x230
[ 183.694609][ C1] ? do_syscall_64+0xb6/0x230
[ 183.699410][ C1] do_syscall_64+0xf3/0x230
[ 183.704003][ C1] ? clear_bhb_loop+0x35/0x90
[ 183.708840][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 183.714811][ C1] RIP: 0033:0x7f33e447dda9
[ 183.719277][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 183.727845][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 183.735968][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 183.744049][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 183.752069][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 183.760174][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 183.768482][ C1]
[ 183.771531][ C1] DEBUG: waiting rtnl_mutex for 10154 jiffies.
[ 183.777792][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 183.788044][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 183.794063][ C1] Call Trace:
[ 183.797387][ C1]
[ 183.800337][ C1] __schedule+0x17e8/0x4a20
[ 183.804889][ C1] ? __pfx___schedule+0x10/0x10
[ 183.809862][ C1] ? __pfx_lock_release+0x10/0x10
[ 183.814999][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 183.820517][ C1] ? kthread_data+0x52/0xd0
[ 183.825232][ C1] ? schedule+0x90/0x320
[ 183.829534][ C1] ? wq_worker_sleeping+0x66/0x240
[ 183.834668][ C1] ? schedule+0x90/0x320
[ 183.838972][ C1] schedule+0x14b/0x320
[ 183.843153][ C1] schedule_preempt_disabled+0x13/0x30
[ 183.848669][ C1] __mutex_lock+0x6a4/0xd70
[ 183.853196][ C1] ? mark_lock+0x9a/0x360
[ 183.857586][ C1] ? __mutex_lock+0x527/0xd70
[ 183.862287][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 183.867498][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 183.872556][ C1] ? rtnl_lock+0xe7/0x130
[ 183.876940][ C1] addrconf_dad_work+0xd0/0x16f0
[ 183.882000][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 183.887513][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 183.893872][ C1] ? process_scheduled_works+0x945/0x1830
[ 183.899642][ C1] process_scheduled_works+0xa2c/0x1830
[ 183.905239][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 183.911284][ C1] ? assign_work+0x364/0x3d0
[ 183.915931][ C1] worker_thread+0x86d/0xd50
[ 183.920663][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 183.926622][ C1] ? __kthread_parkme+0x169/0x1d0
[ 183.932194][ C1] ? __pfx_worker_thread+0x10/0x10
[ 183.937532][ C1] kthread+0x2f0/0x390
[ 183.941621][ C1] ? __pfx_worker_thread+0x10/0x10
[ 183.946791][ C1] ? __pfx_kthread+0x10/0x10
[ 183.951403][ C1] ret_from_fork+0x4b/0x80
[ 183.955887][ C1] ? __pfx_kthread+0x10/0x10
[ 183.960592][ C1] ret_from_fork_asm+0x1a/0x30
[ 183.965396][ C1]
[ 183.968463][ C1]
[ 183.968463][ C1] Showing all locks held in the system:
[ 183.976396][ C1] 3 locks held by kworker/u8:4/61:
[ 183.981687][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 183.993446][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 184.006316][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 184.015928][ C1] 2 locks held by getty/4842:
[ 184.020701][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 184.030563][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 184.040755][ C1] 3 locks held by kworker/1:3/5108:
[ 184.045997][ C1] 2 locks held by syz-executor.0/5465:
[ 184.051557][ C1] 4 locks held by syz-executor.0/5468:
[ 184.057057][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 184.066802][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 184.076990][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 184.086824][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 184.096834][ C1] 2 locks held by sed/5467:
[ 184.101348][ C1]
[ 184.103680][ C1] =============================================
[ 184.103680][ C1]
[ 185.155759][ C1] DEBUG: holding rtnl_mutex for 10294 jiffies.
[ 185.161975][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 185.173879][ C1] Call Trace:
[ 185.177207][ C1]
[ 185.180241][ C1] __schedule+0x17e8/0x4a20
[ 185.184793][ C1] ? __pfx___schedule+0x10/0x10
[ 185.189706][ C1] ? __pfx_lock_release+0x10/0x10
[ 185.194764][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 185.200736][ C1] ? schedule+0x90/0x320
[ 185.205000][ C1] schedule+0x14b/0x320
[ 185.209215][ C1] synchronize_rcu_expedited+0x684/0x830
[ 185.214968][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 185.221381][ C1] ? mark_lock+0x9a/0x360
[ 185.225774][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 185.231092][ C1] ? __pfx___might_resched+0x10/0x10
[ 185.236424][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 185.242527][ C1] synchronize_rcu+0x11b/0x360
[ 185.247350][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 185.252669][ C1] ? lockdep_unlock+0x16a/0x300
[ 185.257574][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 185.262801][ C1] lockdep_unregister_key+0x4b7/0x540
[ 185.268231][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 185.274142][ C1] ? rcu_is_watching+0x15/0xb0
[ 185.278967][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 185.283590][ C1] __qdisc_destroy+0x165/0x410
[ 185.288420][ C1] taprio_attach+0x24e/0x390
[ 185.293038][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 185.298201][ C1] qdisc_graft+0x128a/0x1580
[ 185.302825][ C1] ? qdisc_graft+0x301/0x1580
[ 185.307558][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 185.312518][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 185.317744][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 185.322733][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 185.328126][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 185.333430][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 185.338535][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 185.343760][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 185.349299][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 185.355404][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 185.361787][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 185.367292][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 185.372554][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 185.378032][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 185.383346][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 185.388528][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 185.394287][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 185.399460][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 185.404787][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 185.409963][ C1] ? ref_tracker_free+0x643/0x7e0
[ 185.415013][ C1] netlink_rcv_skb+0x1e3/0x430
[ 185.419848][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 185.425336][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 185.430705][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 185.436393][ C1] netlink_unicast+0x7ea/0x980
[ 185.441196][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 185.446528][ C1] ? __virt_addr_valid+0x183/0x520
[ 185.451690][ C1] ? __check_object_size+0x49c/0x900
[ 185.457027][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 185.462164][ C1] netlink_sendmsg+0x8db/0xcb0
[ 185.467003][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 185.472315][ C1] ? __import_iovec+0x536/0x820
[ 185.477215][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 185.482172][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 185.487555][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 185.493041][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 185.498430][ C1] __sock_sendmsg+0x221/0x270
[ 185.503202][ C1] ____sys_sendmsg+0x525/0x7d0
[ 185.508183][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 185.513519][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 185.518174][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 185.523356][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 185.529909][ C1] ? do_syscall_64+0x100/0x230
[ 185.534872][ C1] ? do_syscall_64+0xb6/0x230
[ 185.539616][ C1] do_syscall_64+0xf3/0x230
[ 185.544147][ C1] ? clear_bhb_loop+0x35/0x90
[ 185.548887][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 185.554886][ C1] RIP: 0033:0x7f33e447dda9
[ 185.559355][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 185.567994][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 185.576164][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 185.584248][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 185.592285][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 185.600317][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 185.608449][ C1]
[ 185.611480][ C1] DEBUG: waiting rtnl_mutex for 10338 jiffies.
[ 185.617671][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 185.628091][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 185.634284][ C1] Call Trace:
[ 185.637611][ C1]
[ 185.640649][ C1] __schedule+0x17e8/0x4a20
[ 185.645234][ C1] ? __pfx___schedule+0x10/0x10
[ 185.650147][ C1] ? __pfx_lock_release+0x10/0x10
[ 185.655201][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 185.660742][ C1] ? kthread_data+0x52/0xd0
[ 185.665267][ C1] ? schedule+0x90/0x320
[ 185.669589][ C1] ? wq_worker_sleeping+0x66/0x240
[ 185.674724][ C1] ? schedule+0x90/0x320
[ 185.679019][ C1] schedule+0x14b/0x320
[ 185.683296][ C1] schedule_preempt_disabled+0x13/0x30
[ 185.688898][ C1] __mutex_lock+0x6a4/0xd70
[ 185.693425][ C1] ? mark_lock+0x9a/0x360
[ 185.697822][ C1] ? __mutex_lock+0x527/0xd70
[ 185.702556][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 185.707735][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 185.712794][ C1] ? rtnl_lock+0xe7/0x130
[ 185.717187][ C1] addrconf_dad_work+0xd0/0x16f0
[ 185.722167][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 185.727685][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 185.734049][ C1] ? process_scheduled_works+0x945/0x1830
[ 185.739833][ C1] process_scheduled_works+0xa2c/0x1830
[ 185.745440][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 185.751483][ C1] ? assign_work+0x364/0x3d0
[ 185.756184][ C1] worker_thread+0x86d/0xd50
[ 185.760843][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 185.766921][ C1] ? __kthread_parkme+0x169/0x1d0
[ 185.771975][ C1] ? __pfx_worker_thread+0x10/0x10
[ 185.777144][ C1] kthread+0x2f0/0x390
[ 185.781239][ C1] ? __pfx_worker_thread+0x10/0x10
[ 185.786414][ C1] ? __pfx_kthread+0x10/0x10
[ 185.791029][ C1] ret_from_fork+0x4b/0x80
[ 185.795501][ C1] ? __pfx_kthread+0x10/0x10
[ 185.800144][ C1] ret_from_fork_asm+0x1a/0x30
[ 185.804947][ C1]
[ 185.808017][ C1]
[ 185.808017][ C1] Showing all locks held in the system:
[ 185.815787][ C1] 3 locks held by kworker/u8:4/61:
[ 185.820914][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 185.832581][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 185.845458][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 185.854998][ C1] 2 locks held by getty/4842:
[ 185.859728][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 185.869567][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 185.880006][ C1] 3 locks held by kworker/1:3/5108:
[ 185.885418][ C1] 2 locks held by syz-executor.0/5465:
[ 185.890987][ C1] 4 locks held by syz-executor.0/5468:
[ 185.896494][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 185.906248][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 185.916438][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 185.926445][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 185.936371][ C1] 2 locks held by sed/5467:
[ 185.940969][ C1]
[ 185.943305][ C1] =============================================
[ 185.943305][ C1]
[ 186.995746][ C1] DEBUG: holding rtnl_mutex for 10478 jiffies.
[ 187.002075][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 187.013995][ C1] Call Trace:
[ 187.017382][ C1]
[ 187.020338][ C1] __schedule+0x17e8/0x4a20
[ 187.024985][ C1] ? __pfx___schedule+0x10/0x10
[ 187.029992][ C1] ? __pfx_lock_release+0x10/0x10
[ 187.035052][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 187.041025][ C1] ? schedule+0x90/0x320
[ 187.045374][ C1] schedule+0x14b/0x320
[ 187.049590][ C1] synchronize_rcu_expedited+0x684/0x830
[ 187.055252][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 187.061483][ C1] ? mark_lock+0x9a/0x360
[ 187.065870][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 187.071178][ C1] ? __pfx___might_resched+0x10/0x10
[ 187.076514][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 187.082619][ C1] synchronize_rcu+0x11b/0x360
[ 187.087453][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 187.092770][ C1] ? lockdep_unlock+0x16a/0x300
[ 187.097686][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 187.103004][ C1] lockdep_unregister_key+0x4b7/0x540
[ 187.108436][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 187.114561][ C1] ? rcu_is_watching+0x15/0xb0
[ 187.119476][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 187.124103][ C1] __qdisc_destroy+0x165/0x410
[ 187.128932][ C1] taprio_attach+0x24e/0x390
[ 187.133564][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 187.138738][ C1] qdisc_graft+0x128a/0x1580
[ 187.143385][ C1] ? qdisc_graft+0x301/0x1580
[ 187.148126][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 187.153088][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 187.158239][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 187.163223][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 187.168767][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 187.174069][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 187.179155][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 187.184565][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 187.190086][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 187.196126][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 187.202487][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 187.208004][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 187.213230][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 187.218743][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 187.224133][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 187.229604][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 187.235358][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 187.240526][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 187.245852][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 187.251003][ C1] ? ref_tracker_free+0x643/0x7e0
[ 187.256087][ C1] netlink_rcv_skb+0x1e3/0x430
[ 187.260966][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 187.266489][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 187.271832][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 187.277084][ C1] netlink_unicast+0x7ea/0x980
[ 187.281885][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 187.287223][ C1] ? __virt_addr_valid+0x183/0x520
[ 187.292372][ C1] ? __check_object_size+0x49c/0x900
[ 187.297776][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 187.297795][ C1] rcu: 0-...!: (1 GPs behind) idle=56fc/1/0x4000000000000000 softirq=9060/9061 fqs=0
[ 187.298134][ C1] rcu: (detected by 1, t=10502 jiffies, g=8181, q=115 ncpus=2)
[ 187.298169][ C1] Sending NMI from CPU 1 to CPUs 0:
[ 187.298207][ C0] NMI backtrace for cpu 0
[ 187.298235][ C0] CPU: 0 PID: 5467 Comm: sed Not tainted 6.10.0-rc3-next-20240611-syzkaller-04860-ga957267fa7e9 #0
[ 187.298255][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 187.298265][ C0] RIP: 0010:lock_release+0x18c/0x9f0
[ 187.298289][ C0] Code: 00 00 00 9c 8f 84 24 b0 00 00 00 42 80 3c 3b 00 74 08 4c 89 f7 e8 24 f2 89 00 48 8b 9c 24 b0 00 00 00 fa 48 c7 c7 80 ce ca 8b 6f 63 1b 0a 65 ff 05 c8 25 93 7e 48 8d 94 24 80 00 00 00 48 c1
[ 187.298303][ C0] RSP: 0018:ffffc90000007b40 EFLAGS: 00000046
[ 187.298319][ C0] RAX: 0000000000000000 RBX: 0000000000000046 RCX: ffffffff816f63d0
[ 187.298331][ C0] RDX: 0000000000000000 RSI: ffffffff8c200740 RDI: ffffffff8bcace80
[ 187.298343][ C0] RBP: ffffc90000007c80 R08: ffffffff8fae04af R09: 1ffffffff1f5c095
[ 187.298356][ C0] R10: dffffc0000000000 R11: fffffbfff1f5c096 R12: 1ffff92000000f74
[ 187.298369][ C0] R13: ffffffff89938192 R14: ffffc90000007bf0 R15: dffffc0000000000
[ 187.298381][ C0] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
[ 187.298396][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 187.298408][ C0] CR2: 00007fa8abefb440 CR3: 000000000e132000 CR4: 00000000003506f0
[ 187.298429][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 187.298440][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 187.298451][ C0] Call Trace:
[ 187.298459][ C0]
[ 187.298467][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0
[ 187.298487][ C0] ? __pfx_lock_acquire+0x10/0x10
[ 187.298507][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10
[ 187.298525][ C0] ? nmi_handle+0x2a/0x5a0
[ 187.298549][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20
[ 187.298567][ C0] ? nmi_handle+0x14f/0x5a0
[ 187.298582][ C0] ? nmi_handle+0x2a/0x5a0
[ 187.298598][ C0] ? lock_release+0x18c/0x9f0
[ 187.298615][ C0] ? default_do_nmi+0x63/0x160
[ 187.298634][ C0] ? exc_nmi+0x123/0x1f0
[ 187.298651][ C0] ? end_repeat_nmi+0xf/0x53
[ 187.298669][ C0] ? advance_sched+0xa02/0xca0
[ 187.298692][ C0] ? lock_release+0xb0/0x9f0
[ 187.298710][ C0] ? lock_release+0x18c/0x9f0
[ 187.298728][ C0] ? lock_release+0x18c/0x9f0
[ 187.298746][ C0] ? lock_release+0x18c/0x9f0
[ 187.298764][ C0]
[ 187.298770][ C0]
[ 187.298778][ C0] ? advance_sched+0xa02/0xca0
[ 187.298798][ C0] ? advance_sched+0xa02/0xca0
[ 187.298817][ C0] ? __netif_schedule+0xc4/0x310
[ 187.298834][ C0] ? __pfx_lock_release+0x10/0x10
[ 187.298852][ C0] ? __pfx___netif_schedule+0x10/0x10
[ 187.298871][ C0] ? do_raw_spin_unlock+0x13c/0x8b0
[ 187.298888][ C0] ? taprio_set_budgets+0x32c/0x370
[ 187.298908][ C0] ? advance_sched+0xa02/0xca0
[ 187.298928][ C0] ? advance_sched+0xa02/0xca0
[ 187.298948][ C0] advance_sched+0xb32/0xca0
[ 187.298976][ C0] ? __pfx_advance_sched+0x10/0x10
[ 187.298996][ C0] __hrtimer_run_queues+0x59b/0xd50
[ 187.299014][ C0] ? ktime_get_update_offsets_now+0x3c/0x250
[ 187.299041][ C0] ? __pfx___hrtimer_run_queues+0x10/0x10
[ 187.299059][ C0] ? ktime_get_update_offsets_now+0x22d/0x250
[ 187.299082][ C0] hrtimer_interrupt+0x396/0x990
[ 187.299110][ C0] __sysvec_apic_timer_interrupt+0x110/0x3f0
[ 187.299133][ C0] sysvec_apic_timer_interrupt+0xa1/0xc0
[ 187.299155][ C0]
[ 187.299160][ C0]
[ 187.299166][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 187.299184][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70
[ 187.299205][ C0] Code: 89 fb e8 23 00 00 00 48 8b 3d fc 5a 49 0c 48 89 de 5b e9 73 96 5a 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 00 d6 03 00 65 8b 15 00 8e
[ 187.299218][ C0] RSP: 0018:ffffc90004c5f540 EFLAGS: 00000202
[ 187.299232][ C0] RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffff888023fdda00
[ 187.299243][ C0] RDX: 0000000000000002 RSI: ffffffff8e1a1160 RDI: 0000000000000003
[ 187.299254][ C0] RBP: ffffffff90d22594 R08: 0000000000000003 R09: ffffffff8140e6b2
[ 187.299267][ C0] R10: 0000000000000002 R11: ffff888023fdda00 R12: ffffffff9029c4d0
[ 187.299279][ C0] R13: dffffc0000000000 R14: 1ffff9200098bec4 R15: ffffffff90d22590
[ 187.299294][ C0] ? unwind_next_frame+0x6c2/0x2a00
[ 187.299320][ C0] unwind_next_frame+0x6ef/0x2a00
[ 187.299342][ C0] ? entry_SYSCALL_64_after_hwframe+0x76/0x7f
[ 187.299361][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 187.299378][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 187.299395][ C0] ? __kernel_text_address+0xd/0x40
[ 187.299422][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 187.299438][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10
[ 187.299458][ C0] arch_stack_walk+0x151/0x1b0
[ 187.299477][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 187.299497][ C0] stack_trace_save+0x118/0x1d0
[ 187.299517][ C0] ? __pfx_stack_trace_save+0x10/0x10
[ 187.299536][ C0] ? mark_lock+0x9a/0x360
[ 187.299559][ C0] kasan_save_track+0x3f/0x80
[ 187.299580][ C0] ? kasan_save_track+0x3f/0x80
[ 187.299600][ C0] ? kasan_save_free_info+0x40/0x50
[ 187.299619][ C0] ? poison_slab_object+0xe0/0x150
[ 187.299633][ C0] ? __kasan_slab_free+0x37/0x60
[ 187.299648][ C0] ? kmem_cache_free+0x145/0x350
[ 187.299667][ C0] ? exit_mmap+0x645/0xc80
[ 187.299685][ C0] ? __mmput+0x115/0x390
[ 187.299701][ C0] ? exit_mm+0x220/0x310
[ 187.299720][ C0] ? do_exit+0x9aa/0x28e0
[ 187.299737][ C0] ? do_group_exit+0x207/0x2c0
[ 187.299756][ C0] ? __x64_sys_exit_group+0x3f/0x40
[ 187.299775][ C0] ? do_syscall_64+0xf3/0x230
[ 187.299790][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 187.299828][ C0] ? exit_mmap+0x645/0xc80
[ 187.299846][ C0] kasan_save_free_info+0x40/0x50
[ 187.299865][ C0] poison_slab_object+0xe0/0x150
[ 187.299881][ C0] ? exit_mmap+0x645/0xc80
[ 187.299900][ C0] __kasan_slab_free+0x37/0x60
[ 187.299916][ C0] kmem_cache_free+0x145/0x350
[ 187.299938][ C0] exit_mmap+0x645/0xc80
[ 187.299961][ C0] ? __pfx_exit_mmap+0x10/0x10
[ 187.299980][ C0] ? __asan_memset+0x23/0x50
[ 187.300011][ C0] ? uprobe_clear_state+0x277/0x290
[ 187.300027][ C0] ? mm_update_next_owner+0x53c/0x660
[ 187.300048][ C0] __mmput+0x115/0x390
[ 187.300066][ C0] exit_mm+0x220/0x310
[ 187.300087][ C0] ? __pfx_exit_mm+0x10/0x10
[ 187.300106][ C0] ? taskstats_exit+0x348/0xa70
[ 187.300126][ C0] ? tty_audit_exit+0x155/0x200
[ 187.300148][ C0] do_exit+0x9aa/0x28e0
[ 187.300172][ C0] ? __pfx_do_exit+0x10/0x10
[ 187.300191][ C0] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 187.300211][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 187.300232][ C0] ? _raw_spin_unlock_irq+0x23/0x50
[ 187.300250][ C0] ? lockdep_hardirqs_on+0x99/0x150
[ 187.300272][ C0] do_group_exit+0x207/0x2c0
[ 187.300295][ C0] __x64_sys_exit_group+0x3f/0x40
[ 187.300315][ C0] do_syscall_64+0xf3/0x230
[ 187.300331][ C0] ? clear_bhb_loop+0x35/0x90
[ 187.300349][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 187.300366][ C0] RIP: 0033:0x7fa8abfb9a90
[ 187.300380][ C0] Code: Unable to access opcode bytes at 0x7fa8abfb9a66.
[ 187.300388][ C0] RSP: 002b:00007ffe1cda36a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 187.300405][ C0] RAX: ffffffffffffffda RBX: 00007fa8ac0aa860 RCX: 00007fa8abfb9a90
[ 187.300423][ C0] RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000000
[ 187.300434][ C0] RBP: 00007fa8ac0aa860 R08: 00007ffe1cda3520 R09: 00007ffe1cda3600
[ 187.300445][ C0] R10: 00007ffe1cda3560 R11: 0000000000000246 R12: 0000000000000000
[ 187.300456][ C0] R13: 0000000000000000 R14: 00007fa8ac0ae658 R15: 0000000000000001
[ 187.300475][ C0]
[ 187.301198][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g8181 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
[ 187.301225][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
[ 187.301236][ C1] rcu: RCU grace-period kthread stack dump:
[ 187.301244][ C1] task:rcu_preempt state:R running task stack:26008 pid:17 tgid:17 ppid:2 flags:0x00004000
[ 187.301289][ C1] Call Trace:
[ 187.301297][ C1]
[ 187.301310][ C1] __schedule+0x17e8/0x4a20
[ 187.301360][ C1] ? __pfx___schedule+0x10/0x10
[ 187.301389][ C1] ? __pfx_lock_release+0x10/0x10
[ 187.301412][ C1] ? __asan_memset+0x23/0x50
[ 187.301445][ C1] ? __pfx_lockdep_init_map_type+0x10/0x10
[ 187.301472][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 187.301501][ C1] ? schedule+0x90/0x320
[ 187.301525][ C1] schedule+0x14b/0x320
[ 187.301552][ C1] schedule_timeout+0x1be/0x310
[ 187.301575][ C1] ? __pfx_schedule_timeout+0x10/0x10
[ 187.301600][ C1] ? __pfx_process_timeout+0x10/0x10
[ 187.301634][ C1] ? prepare_to_swait_event+0x32e/0x350
[ 187.301670][ C1] rcu_gp_fqs_loop+0x2df/0x1330
[ 187.301697][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 187.301729][ C1] ? rcu_gp_init+0x126f/0x1650
[ 187.301760][ C1] ? __pfx_rcu_gp_init+0x10/0x10
[ 187.301784][ C1] ? __pfx_dyntick_save_progress_counter+0x10/0x10
[ 187.301811][ C1] ? __pfx_rcu_gp_fqs_loop+0x10/0x10
[ 187.301836][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 187.301867][ C1] ? finish_swait+0xd4/0x1e0
[ 187.301894][ C1] rcu_gp_kthread+0xa7/0x3b0
[ 187.301923][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10
[ 187.301947][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 187.301977][ C1] ? __kthread_parkme+0x169/0x1d0
[ 187.302006][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10
[ 187.302032][ C1] kthread+0x2f0/0x390
[ 187.302059][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10
[ 187.302084][ C1] ? __pfx_kthread+0x10/0x10
[ 187.302112][ C1] ret_from_fork+0x4b/0x80
[ 187.302138][ C1] ? __pfx_kthread+0x10/0x10
[ 187.302165][ C1] ret_from_fork_asm+0x1a/0x30
[ 187.302209][ C1]
[ 187.302217][ C1] rcu: Stack dump where RCU GP kthread last ran:
[ 187.302226][ C1] CPU: 1 PID: 5468 Comm: syz-executor.0 Not tainted 6.10.0-rc3-next-20240611-syzkaller-04860-ga957267fa7e9 #0
[ 187.302249][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 187.302261][ C1] RIP: 0010:console_flush_all+0x9f7/0xf50
[ 187.302283][ C1] Code: 20 00 90 0f 0b 90 e9 f3 f9 ff ff e8 33 15 20 00 e8 ae 76 17 0a 4d 85 f6 74 c0 e8 24 15 20 00 fb 49 bd 00 00 00 00 00 fc ff df <43> 80 3c 2f 00 48 8b 5c 24 30 74 08 48 89 df e8 d5 23 86 00 4c 8b
[ 187.302316][ C1] RSP: 0018:ffffc90000a184a0 EFLAGS: 00000246
[ 187.302334][ C1] RAX: ffffffff817332cc RBX: 0000000000000000 RCX: ffff88801ea09e00
[ 187.302349][ C1] RDX: 0000000000000102 RSI: 0000000000000000 RDI: 0000000000000000
[ 187.302363][ C1] RBP: ffffc90000a18630 R08: ffffffff81733273 R09: 1ffffffff25f96e8
[ 187.302379][ C1] R10: dffffc0000000000 R11: fffffbfff25f96e9 R12: ffffffff8eb26a60
[ 187.302396][ C1] R13: dffffc0000000000 R14: 0000000000000200 R15: 1ffffffff1d64d57
[ 187.302411][ C1] FS: 00007f33e526c6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
[ 187.302430][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 187.302446][ C1] CR2: 00007f33e526cd58 CR3: 000000007ae08000 CR4: 00000000003506f0
[ 187.302464][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 187.302477][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 187.302491][ C1] Call Trace:
[ 187.302499][ C1]
[ 187.302508][ C1] ? rcu_check_gp_kthread_starvation+0x278/0x310
[ 187.302541][ C1] ? print_other_cpu_stall+0x147a/0x15b0
[ 187.302582][ C1] ? __pfx_print_other_cpu_stall+0x10/0x10
[ 187.302607][ C1] ? __pfx_lock_release+0x10/0x10
[ 187.302643][ C1] ? kvm_check_and_clear_guest_paused+0x6a/0xd0
[ 187.302677][ C1] ? rcu_sched_clock_irq+0xa2c/0x10d0
[ 187.302715][ C1] ? __pfx_rcu_sched_clock_irq+0x10/0x10
[ 187.302745][ C1] ? hrtimer_run_queues+0x16c/0x460
[ 187.302773][ C1] ? update_process_times+0x1ce/0x230
[ 187.302802][ C1] ? tick_nohz_handler+0x37c/0x500
[ 187.302831][ C1] ? __pfx_tick_nohz_handler+0x10/0x10
[ 187.302856][ C1] ? __hrtimer_run_queues+0x551/0xd50
[ 187.302879][ C1] ? ktime_get_update_offsets_now+0x3c/0x250
[ 187.302923][ C1] ? __pfx___hrtimer_run_queues+0x10/0x10
[ 187.302956][ C1] ? hrtimer_interrupt+0x396/0x990
[ 187.303001][ C1] ? __sysvec_apic_timer_interrupt+0x110/0x3f0
[ 187.303033][ C1] ? sysvec_apic_timer_interrupt+0x52/0xc0
[ 187.303061][ C1] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 187.303091][ C1] ? console_flush_all+0x993/0xf50
[ 187.303110][ C1] ? console_flush_all+0x9ec/0xf50
[ 187.303133][ C1] ? console_flush_all+0x9f7/0xf50
[ 187.303163][ C1] ? console_flush_all+0x147/0xf50
[ 187.303190][ C1] ? __pfx_console_flush_all+0x10/0x10
[ 187.303215][ C1] ? __pfx_lock_acquire+0x10/0x10
[ 187.303244][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 187.303275][ C1] console_unlock+0x13b/0x4d0
[ 187.303310][ C1] ? __pfx_console_unlock+0x10/0x10
[ 187.303337][ C1] ? _printk+0xd5/0x120
[ 187.303366][ C1] ? _printk+0xd5/0x120
[ 187.303393][ C1] ? __pfx___down_trylock_console_sem+0x10/0x10
[ 187.303428][ C1] vprintk_emit+0x7a1/0x900
[ 187.303463][ C1] ? __pfx_vprintk_emit+0x10/0x10
[ 187.303508][ C1] _printk+0xd5/0x120
[ 187.303538][ C1] ? __check_object_size+0x49c/0x900
[ 187.303562][ C1] ? wq_watchdog_touch+0x64/0x110
[ 187.303584][ C1] ? __pfx__printk+0x10/0x10
[ 187.303616][ C1] ? is_bpf_text_address+0x285/0x2a0
[ 187.303642][ C1] ? is_bpf_text_address+0x26/0x2a0
[ 187.303681][ C1] ? __check_object_size+0x49c/0x900
[ 187.303706][ C1] show_trace_log_lvl+0x43a/0x520
[ 187.303748][ C1] ? netlink_sendmsg+0x8db/0xcb0
[ 187.303781][ C1] sched_show_task+0x578/0x740
[ 187.303802][ C1] ? report_rtnl_holders+0x183/0x2d0
[ 187.303831][ C1] ? __pfx__printk+0x10/0x10
[ 187.303860][ C1] ? __pfx_sched_show_task+0x10/0x10
[ 187.303892][ C1] report_rtnl_holders+0x1ba/0x2d0
[ 187.303918][ C1] ? report_rtnl_holders+0x20/0x2d0
[ 187.303947][ C1] call_timer_fn+0x18e/0x650
[ 187.303976][ C1] ? call_timer_fn+0xc0/0x650
[ 187.304004][ C1] ? __pfx_report_rtnl_holders+0x10/0x10
[ 187.304031][ C1] ? __pfx_call_timer_fn+0x10/0x10
[ 187.304062][ C1] ? __pfx_report_rtnl_holders+0x10/0x10
[ 187.304091][ C1] ? __pfx_report_rtnl_holders+0x10/0x10
[ 187.304119][ C1] ? __pfx_report_rtnl_holders+0x10/0x10
[ 187.304145][ C1] ? _raw_spin_unlock_irq+0x23/0x50
[ 187.304168][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 187.304196][ C1] ? __pfx_report_rtnl_holders+0x10/0x10
[ 187.304225][ C1] __run_timer_base+0x66a/0x8e0
[ 187.304264][ C1] ? __pfx___run_timer_base+0x10/0x10
[ 187.304298][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 187.304330][ C1] run_timer_softirq+0xb7/0x170
[ 187.304359][ C1] handle_softirqs+0x2c4/0x970
[ 187.304387][ C1] ? __irq_exit_rcu+0xf4/0x1c0
[ 187.304414][ C1] ? __pfx_handle_softirqs+0x10/0x10
[ 187.304442][ C1] ? irqtime_account_irq+0xd4/0x1e0
[ 187.304472][ C1] __irq_exit_rcu+0xf4/0x1c0
[ 187.304495][ C1] ? __pfx___irq_exit_rcu+0x10/0x10
[ 187.304528][ C1] irq_exit_rcu+0x9/0x30
[ 187.304548][ C1] sysvec_apic_timer_interrupt+0xa6/0xc0
[ 187.304578][ C1]
[ 187.304585][ C1]
[ 187.304594][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 187.304618][ C1] RIP: 0010:smp_call_function_many_cond+0x1860/0x29d0
[ 187.304642][ C1] Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 19 0d 0c 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 c4 08 0c 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 a8 08
[ 187.304664][ C1] RSP: 0018:ffffc90004bdf7e0 EFLAGS: 00000293
[ 187.304682][ C1] RAX: ffffffff81873f48 RBX: 1ffff11017288c31 RCX: ffff88801ea09e00
[ 187.304698][ C1] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
[ 187.304711][ C1] RBP: ffffc90004bdf9b0 R08: ffffffff81873f17 R09: 1ffffffff1f5c095
[ 187.304727][ C1] R10: dffffc0000000000 R11: 0000000000000000 R12: dffffc0000000000
[ 187.304742][ C1] R13: ffff8880b9446188 R14: ffff8880b953fa00 R15: 0000000000000000
[ 187.304765][ C1] ? smp_call_function_many_cond+0x1847/0x29d0
[ 187.304786][ C1] ? smp_call_function_many_cond+0x1878/0x29d0
[ 187.304823][ C1] ? __pfx_retrigger_next_event+0x10/0x10
[ 187.304845][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 187.304881][ C1] ? _raw_spin_unlock_irqrestore+0x8f/0x140
[ 187.304904][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 187.304934][ C1] ? __pfx_smp_call_function_many_cond+0x10/0x10
[ 187.304955][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 187.304981][ C1] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 187.305017][ C1] clock_was_set+0x75c/0x810
[ 187.305046][ C1] ? __pfx_clock_was_set+0x10/0x10
[ 187.305066][ C1] ? __asan_memcpy+0x40/0x70
[ 187.305095][ C1] ? timekeeping_update+0x3e5/0x450
[ 187.305122][ C1] ? do_adjtimex+0x515/0xab0
[ 187.305149][ C1] timekeeping_inject_offset+0x4e8/0x580
[ 187.305175][ C1] ? do_adjtimex+0x515/0xab0
[ 187.305206][ C1] ? __pfx_timekeeping_inject_offset+0x10/0x10
[ 187.305234][ C1] ? __pfx_add_device_randomness+0x10/0x10
[ 187.305258][ C1] ? security_capable+0x90/0xb0
[ 187.305288][ C1] do_adjtimex+0x515/0xab0
[ 187.305320][ C1] ? __pfx_do_adjtimex+0x10/0x10
[ 187.305347][ C1] ? __pfx___might_resched+0x10/0x10
[ 187.305371][ C1] ? __might_fault+0xaa/0x120
[ 187.305397][ C1] ? __pfx_lock_release+0x10/0x10
[ 187.305419][ C1] ? _raw_spin_lock_irq+0xdf/0x120
[ 187.305452][ C1] ? __might_fault+0xc6/0x120
[ 187.305483][ C1] __x64_sys_clock_adjtime+0x1e1/0x290
[ 187.305512][ C1] ? __pfx___x64_sys_clock_adjtime+0x10/0x10
[ 187.305562][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 187.305589][ C1] ? do_syscall_64+0x100/0x230
[ 187.305612][ C1] ? do_syscall_64+0xb6/0x230
[ 187.305636][ C1] do_syscall_64+0xf3/0x230
[ 187.305656][ C1] ? clear_bhb_loop+0x35/0x90
[ 187.305687][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 187.305710][ C1] RIP: 0033:0x7f33e447dda9
[ 187.305729][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
[ 187.305747][ C1] RSP: 002b:00007f33e526c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
[ 187.305768][ C1] RAX: ffffffffffffffda RBX: 00007f33e45ac050 RCX: 00007f33e447dda9
[ 187.305784][ C1] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
[ 187.305797][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 187.305810][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 187.305823][ C1] R13: 000000000000006e R14: 00007f33e45ac050 R15: 00007ffd5e8bb608
[ 187.305854][ C1]
[ 189.134365][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 189.139553][ C1] netlink_sendmsg+0x8db/0xcb0
[ 189.144365][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 189.150535][ C1] ? __import_iovec+0x536/0x820
[ 189.155467][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 189.160614][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 189.166059][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 189.171547][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 189.176888][ C1] __sock_sendmsg+0x221/0x270
[ 189.181608][ C1] ____sys_sendmsg+0x525/0x7d0
[ 189.186444][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 189.191773][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 189.196509][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 189.201689][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 189.208070][ C1] ? do_syscall_64+0x100/0x230
[ 189.212868][ C1] ? do_syscall_64+0xb6/0x230
[ 189.217611][ C1] do_syscall_64+0xf3/0x230
[ 189.222150][ C1] ? clear_bhb_loop+0x35/0x90
[ 189.226888][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 189.232895][ C1] RIP: 0033:0x7f33e447dda9
[ 189.237621][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 189.246103][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 189.254354][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 189.262377][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 189.270483][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 189.278600][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 189.286647][ C1]
[ 189.289679][ C1] DEBUG: waiting rtnl_mutex for 10706 jiffies.
[ 189.295871][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 189.306269][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 189.312812][ C1] Call Trace:
[ 189.316138][ C1]
[ 189.319084][ C1] __schedule+0x17e8/0x4a20
[ 189.323634][ C1] ? __pfx___schedule+0x10/0x10
[ 189.328550][ C1] ? __pfx_lock_release+0x10/0x10
[ 189.333601][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 189.339267][ C1] ? kthread_data+0x52/0xd0
[ 189.343801][ C1] ? schedule+0x90/0x320
[ 189.348097][ C1] ? wq_worker_sleeping+0x66/0x240
[ 189.353236][ C1] ? schedule+0x90/0x320
[ 189.357536][ C1] schedule+0x14b/0x320
[ 189.361715][ C1] schedule_preempt_disabled+0x13/0x30
[ 189.367230][ C1] __mutex_lock+0x6a4/0xd70
[ 189.371760][ C1] ? mark_lock+0x9a/0x360
[ 189.376149][ C1] ? __mutex_lock+0x527/0xd70
[ 189.380942][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 189.386200][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 189.391257][ C1] ? rtnl_lock+0xe7/0x130
[ 189.395608][ C1] addrconf_dad_work+0xd0/0x16f0
[ 189.400617][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 189.406137][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 189.412504][ C1] ? process_scheduled_works+0x945/0x1830
[ 189.418275][ C1] process_scheduled_works+0xa2c/0x1830
[ 189.423897][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 189.429995][ C1] ? assign_work+0x364/0x3d0
[ 189.434619][ C1] worker_thread+0x86d/0xd50
[ 189.439336][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 189.445279][ C1] ? __kthread_parkme+0x169/0x1d0
[ 189.450414][ C1] ? __pfx_worker_thread+0x10/0x10
[ 189.455594][ C1] kthread+0x2f0/0x390
[ 189.459797][ C1] ? __pfx_worker_thread+0x10/0x10
[ 189.464948][ C1] ? __pfx_kthread+0x10/0x10
[ 189.469606][ C1] ret_from_fork+0x4b/0x80
[ 189.474045][ C1] ? __pfx_kthread+0x10/0x10
[ 189.478686][ C1] ret_from_fork_asm+0x1a/0x30
[ 189.483490][ C1]
[ 189.486596][ C1]
[ 189.486596][ C1] Showing all locks held in the system:
[ 189.494347][ C1] 3 locks held by kworker/u8:4/61:
[ 189.499534][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 189.511255][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 189.524133][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 189.533732][ C1] 2 locks held by getty/4842:
[ 189.538560][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 189.548406][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 189.558619][ C1] 3 locks held by kworker/1:3/5108:
[ 189.563833][ C1] 2 locks held by syz-executor.0/5465:
[ 189.569589][ C1] 4 locks held by syz-executor.0/5468:
[ 189.575054][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 189.584707][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 189.594893][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 189.604742][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 189.614682][ C1] 2 locks held by sed/5467:
[ 189.619230][ C1]
[ 189.621607][ C1] =============================================
[ 189.621607][ C1]
[ 190.675809][ C1] DEBUG: holding rtnl_mutex for 10846 jiffies.
[ 190.682111][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 190.694127][ C1] Call Trace:
[ 190.697462][ C1]
[ 190.700417][ C1] __schedule+0x17e8/0x4a20
[ 190.704977][ C1] ? __pfx___schedule+0x10/0x10
[ 190.709901][ C1] ? __pfx_lock_release+0x10/0x10
[ 190.714945][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 190.721002][ C1] ? schedule+0x90/0x320
[ 190.725263][ C1] schedule+0x14b/0x320
[ 190.729478][ C1] synchronize_rcu_expedited+0x684/0x830
[ 190.735233][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 190.741467][ C1] ? mark_lock+0x9a/0x360
[ 190.745871][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 190.751389][ C1] ? __pfx___might_resched+0x10/0x10
[ 190.756864][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 190.763061][ C1] synchronize_rcu+0x11b/0x360
[ 190.767985][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 190.773482][ C1] ? lockdep_unlock+0x16a/0x300
[ 190.778398][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 190.783637][ C1] lockdep_unregister_key+0x4b7/0x540
[ 190.789158][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 190.795103][ C1] ? rcu_is_watching+0x15/0xb0
[ 190.799976][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 190.804709][ C1] __qdisc_destroy+0x165/0x410
[ 190.809643][ C1] taprio_attach+0x24e/0x390
[ 190.814332][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 190.819823][ C1] qdisc_graft+0x128a/0x1580
[ 190.824462][ C1] ? qdisc_graft+0x301/0x1580
[ 190.829214][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 190.834176][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 190.839261][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 190.844157][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 190.849525][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 190.854870][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 190.860125][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 190.865367][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 190.870901][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 190.876947][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 190.883304][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 190.888740][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 190.893968][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 190.899449][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 190.904782][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 190.909974][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 190.915778][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 190.920930][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 190.926284][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 190.931457][ C1] ? ref_tracker_free+0x643/0x7e0
[ 190.936599][ C1] netlink_rcv_skb+0x1e3/0x430
[ 190.941402][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 190.946929][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 190.952264][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 190.957525][ C1] netlink_unicast+0x7ea/0x980
[ 190.962328][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 190.967668][ C1] ? __virt_addr_valid+0x183/0x520
[ 190.972805][ C1] ? __check_object_size+0x49c/0x900
[ 190.978155][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 190.983292][ C1] netlink_sendmsg+0x8db/0xcb0
[ 190.988238][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 190.993606][ C1] ? __import_iovec+0x536/0x820
[ 190.998510][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 191.003466][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 191.008882][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 191.014367][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 191.019711][ C1] __sock_sendmsg+0x221/0x270
[ 191.024434][ C1] ____sys_sendmsg+0x525/0x7d0
[ 191.029289][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 191.034614][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 191.039347][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 191.044705][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 191.051102][ C1] ? do_syscall_64+0x100/0x230
[ 191.055927][ C1] ? do_syscall_64+0xb6/0x230
[ 191.060658][ C1] do_syscall_64+0xf3/0x230
[ 191.065184][ C1] ? clear_bhb_loop+0x35/0x90
[ 191.069922][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 191.075869][ C1] RIP: 0033:0x7f33e447dda9
[ 191.080300][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 191.088772][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 191.096967][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 191.104952][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 191.113066][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 191.121190][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 191.129228][ C1]
[ 191.132260][ C1] DEBUG: waiting rtnl_mutex for 10890 jiffies.
[ 191.138471][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 191.148797][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 191.154901][ C1] Call Trace:
[ 191.158227][ C1]
[ 191.161197][ C1] __schedule+0x17e8/0x4a20
[ 191.165789][ C1] ? __pfx___schedule+0x10/0x10
[ 191.170675][ C1] ? __pfx_lock_release+0x10/0x10
[ 191.175770][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 191.181300][ C1] ? kthread_data+0x52/0xd0
[ 191.186057][ C1] ? schedule+0x90/0x320
[ 191.190341][ C1] ? wq_worker_sleeping+0x66/0x240
[ 191.195569][ C1] ? schedule+0x90/0x320
[ 191.199884][ C1] schedule+0x14b/0x320
[ 191.204160][ C1] schedule_preempt_disabled+0x13/0x30
[ 191.209780][ C1] __mutex_lock+0x6a4/0xd70
[ 191.214315][ C1] ? mark_lock+0x9a/0x360
[ 191.218707][ C1] ? __mutex_lock+0x527/0xd70
[ 191.223410][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 191.228841][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 191.233901][ C1] ? rtnl_lock+0xe7/0x130
[ 191.238286][ C1] addrconf_dad_work+0xd0/0x16f0
[ 191.243262][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 191.248781][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 191.255335][ C1] ? process_scheduled_works+0x945/0x1830
[ 191.261267][ C1] process_scheduled_works+0xa2c/0x1830
[ 191.267008][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 191.273282][ C1] ? assign_work+0x364/0x3d0
[ 191.277931][ C1] worker_thread+0x86d/0xd50
[ 191.282550][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 191.288502][ C1] ? __kthread_parkme+0x169/0x1d0
[ 191.293560][ C1] ? __pfx_worker_thread+0x10/0x10
[ 191.298721][ C1] kthread+0x2f0/0x390
[ 191.302813][ C1] ? __pfx_worker_thread+0x10/0x10
[ 191.307985][ C1] ? __pfx_kthread+0x10/0x10
[ 191.312597][ C1] ret_from_fork+0x4b/0x80
[ 191.317068][ C1] ? __pfx_kthread+0x10/0x10
[ 191.321679][ C1] ret_from_fork_asm+0x1a/0x30
[ 191.326515][ C1]
[ 191.329549][ C1]
[ 191.329549][ C1] Showing all locks held in the system:
[ 191.337392][ C1] 3 locks held by kworker/u8:4/61:
[ 191.342517][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 191.354244][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 191.367196][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 191.377004][ C1] 2 locks held by getty/4842:
[ 191.381690][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 191.391804][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 191.402077][ C1] 3 locks held by kworker/1:3/5108:
[ 191.407320][ C1] 2 locks held by syz-executor.0/5465:
[ 191.412785][ C1] 4 locks held by syz-executor.0/5468:
[ 191.418381][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 191.428046][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 191.438321][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 191.448210][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 191.458133][ C1] 2 locks held by sed/5467:
[ 191.462746][ C1]
[ 191.465084][ C1] =============================================
[ 191.465084][ C1]
[ 192.515747][ C1] DEBUG: holding rtnl_mutex for 11030 jiffies.
[ 192.521970][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 192.533799][ C1] Call Trace:
[ 192.537215][ C1]
[ 192.540167][ C1] __schedule+0x17e8/0x4a20
[ 192.544811][ C1] ? __pfx___schedule+0x10/0x10
[ 192.549738][ C1] ? __pfx_lock_release+0x10/0x10
[ 192.554795][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 192.560761][ C1] ? schedule+0x90/0x320
[ 192.565027][ C1] schedule+0x14b/0x320
[ 192.569245][ C1] synchronize_rcu_expedited+0x684/0x830
[ 192.574923][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 192.581173][ C1] ? mark_lock+0x9a/0x360
[ 192.585621][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 192.590990][ C1] ? __pfx___might_resched+0x10/0x10
[ 192.596517][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 192.602626][ C1] synchronize_rcu+0x11b/0x360
[ 192.607506][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 192.612854][ C1] ? lockdep_unlock+0x16a/0x300
[ 192.617821][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 192.623072][ C1] lockdep_unregister_key+0x4b7/0x540
[ 192.628513][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 192.634433][ C1] ? rcu_is_watching+0x15/0xb0
[ 192.639260][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 192.643976][ C1] __qdisc_destroy+0x165/0x410
[ 192.648820][ C1] taprio_attach+0x24e/0x390
[ 192.653546][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 192.658727][ C1] qdisc_graft+0x128a/0x1580
[ 192.663470][ C1] ? qdisc_graft+0x301/0x1580
[ 192.668308][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 192.673280][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 192.678386][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 192.683284][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 192.688664][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 192.694088][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 192.699360][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 192.704592][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 192.710120][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 192.716170][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 192.722535][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 192.727966][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 192.733311][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 192.738797][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 192.744113][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 192.749283][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 192.755028][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 192.760254][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 192.765604][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 192.770801][ C1] ? ref_tracker_free+0x643/0x7e0
[ 192.775887][ C1] netlink_rcv_skb+0x1e3/0x430
[ 192.780853][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 192.786375][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 192.791720][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 192.797148][ C1] netlink_unicast+0x7ea/0x980
[ 192.801969][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 192.807300][ C1] ? __virt_addr_valid+0x183/0x520
[ 192.812439][ C1] ? __check_object_size+0x49c/0x900
[ 192.817782][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 192.822934][ C1] netlink_sendmsg+0x8db/0xcb0
[ 192.827806][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 192.833215][ C1] ? __import_iovec+0x536/0x820
[ 192.838115][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 192.843071][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 192.848415][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 192.854046][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 192.859385][ C1] __sock_sendmsg+0x221/0x270
[ 192.864092][ C1] ____sys_sendmsg+0x525/0x7d0
[ 192.868932][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 192.874376][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 192.879084][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 192.884400][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 192.890972][ C1] ? do_syscall_64+0x100/0x230
[ 192.895808][ C1] ? do_syscall_64+0xb6/0x230
[ 192.900507][ C1] do_syscall_64+0xf3/0x230
[ 192.905047][ C1] ? clear_bhb_loop+0x35/0x90
[ 192.909783][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 192.915817][ C1] RIP: 0033:0x7f33e447dda9
[ 192.920251][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 192.928811][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 192.936839][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 192.944921][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 192.952955][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 192.960990][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 192.969159][ C1]
[ 192.972287][ C1] DEBUG: waiting rtnl_mutex for 11074 jiffies.
[ 192.978488][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 192.988726][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 192.994743][ C1] Call Trace:
[ 192.998070][ C1]
[ 193.001019][ C1] __schedule+0x17e8/0x4a20
[ 193.005604][ C1] ? __pfx___schedule+0x10/0x10
[ 193.010736][ C1] ? __pfx_lock_release+0x10/0x10
[ 193.015830][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 193.021317][ C1] ? kthread_data+0x52/0xd0
[ 193.025879][ C1] ? schedule+0x90/0x320
[ 193.030142][ C1] ? wq_worker_sleeping+0x66/0x240
[ 193.035459][ C1] ? schedule+0x90/0x320
[ 193.039759][ C1] schedule+0x14b/0x320
[ 193.043957][ C1] schedule_preempt_disabled+0x13/0x30
[ 193.049472][ C1] __mutex_lock+0x6a4/0xd70
[ 193.054002][ C1] ? mark_lock+0x9a/0x360
[ 193.058395][ C1] ? __mutex_lock+0x527/0xd70
[ 193.063100][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 193.068274][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 193.073333][ C1] ? rtnl_lock+0xe7/0x130
[ 193.077718][ C1] addrconf_dad_work+0xd0/0x16f0
[ 193.082691][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 193.088215][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 193.094666][ C1] ? process_scheduled_works+0x945/0x1830
[ 193.100438][ C1] process_scheduled_works+0xa2c/0x1830
[ 193.106335][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 193.112438][ C1] ? assign_work+0x364/0x3d0
[ 193.117092][ C1] worker_thread+0x86d/0xd50
[ 193.121721][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 193.127688][ C1] ? __kthread_parkme+0x169/0x1d0
[ 193.132737][ C1] ? __pfx_worker_thread+0x10/0x10
[ 193.138001][ C1] kthread+0x2f0/0x390
[ 193.142192][ C1] ? __pfx_worker_thread+0x10/0x10
[ 193.147446][ C1] ? __pfx_kthread+0x10/0x10
[ 193.152068][ C1] ret_from_fork+0x4b/0x80
[ 193.156540][ C1] ? __pfx_kthread+0x10/0x10
[ 193.161194][ C1] ret_from_fork_asm+0x1a/0x30
[ 193.166099][ C1]
[ 193.169158][ C1]
[ 193.169158][ C1] Showing all locks held in the system:
[ 193.177017][ C1] 3 locks held by kworker/u8:4/61:
[ 193.182146][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 193.193870][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 193.207009][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 193.216657][ C1] 2 locks held by getty/4842:
[ 193.221364][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 193.231211][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 193.241486][ C1] 3 locks held by kworker/1:3/5108:
[ 193.246822][ C1] 2 locks held by syz-executor.0/5465:
[ 193.252290][ C1] 4 locks held by syz-executor.0/5468:
[ 193.257887][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 193.267635][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 193.277826][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 193.287841][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 193.297847][ C1] 2 locks held by sed/5467:
[ 193.302357][ C1]
[ 193.304871][ C1] =============================================
[ 193.304871][ C1]
[ 194.355767][ C1] DEBUG: holding rtnl_mutex for 11214 jiffies.
[ 194.361994][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 194.373987][ C1] Call Trace:
[ 194.377326][ C1]
[ 194.380275][ C1] __schedule+0x17e8/0x4a20
[ 194.384827][ C1] ? __pfx___schedule+0x10/0x10
[ 194.389739][ C1] ? __pfx_lock_release+0x10/0x10
[ 194.394787][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 194.400749][ C1] ? schedule+0x90/0x320
[ 194.405015][ C1] schedule+0x14b/0x320
[ 194.409237][ C1] synchronize_rcu_expedited+0x684/0x830
[ 194.414996][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 194.421246][ C1] ? mark_lock+0x9a/0x360
[ 194.425600][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 194.430950][ C1] ? __pfx___might_resched+0x10/0x10
[ 194.436376][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 194.442488][ C1] synchronize_rcu+0x11b/0x360
[ 194.447314][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 194.452624][ C1] ? lockdep_unlock+0x16a/0x300
[ 194.457526][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 194.462758][ C1] lockdep_unregister_key+0x4b7/0x540
[ 194.468191][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 194.474195][ C1] ? rcu_is_watching+0x15/0xb0
[ 194.479023][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 194.483653][ C1] __qdisc_destroy+0x165/0x410
[ 194.488491][ C1] taprio_attach+0x24e/0x390
[ 194.493151][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 194.498477][ C1] qdisc_graft+0x128a/0x1580
[ 194.503185][ C1] ? qdisc_graft+0x301/0x1580
[ 194.507938][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 194.512910][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 194.517997][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 194.523019][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 194.528548][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 194.533863][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 194.539045][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 194.544271][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 194.549793][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 194.555842][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 194.562340][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 194.567916][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 194.573167][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 194.578595][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 194.583903][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 194.589208][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 194.595250][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 194.600532][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 194.605820][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 194.611022][ C1] ? ref_tracker_free+0x643/0x7e0
[ 194.616159][ C1] netlink_rcv_skb+0x1e3/0x430
[ 194.621045][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 194.626591][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 194.631929][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 194.637185][ C1] netlink_unicast+0x7ea/0x980
[ 194.641987][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 194.647341][ C1] ? __virt_addr_valid+0x183/0x520
[ 194.652657][ C1] ? __check_object_size+0x49c/0x900
[ 194.657997][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 194.663311][ C1] netlink_sendmsg+0x8db/0xcb0
[ 194.668378][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 194.673894][ C1] ? __import_iovec+0x536/0x820
[ 194.678905][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 194.683898][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 194.689297][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 194.694794][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 194.700139][ C1] __sock_sendmsg+0x221/0x270
[ 194.704857][ C1] ____sys_sendmsg+0x525/0x7d0
[ 194.709695][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 194.715048][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 194.719791][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 194.725076][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 194.731485][ C1] ? do_syscall_64+0x100/0x230
[ 194.736393][ C1] ? do_syscall_64+0xb6/0x230
[ 194.741094][ C1] do_syscall_64+0xf3/0x230
[ 194.745663][ C1] ? clear_bhb_loop+0x35/0x90
[ 194.750497][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 194.756450][ C1] RIP: 0033:0x7f33e447dda9
[ 194.760897][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 194.769373][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 194.777400][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 194.785393][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 194.793423][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 194.801450][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 194.809772][ C1]
[ 194.812815][ C1] DEBUG: waiting rtnl_mutex for 11258 jiffies.
[ 194.819016][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 194.829413][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 194.835529][ C1] Call Trace:
[ 194.838856][ C1]
[ 194.841807][ C1] __schedule+0x17e8/0x4a20
[ 194.846483][ C1] ? __pfx___schedule+0x10/0x10
[ 194.851361][ C1] ? __pfx_lock_release+0x10/0x10
[ 194.856615][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 194.862103][ C1] ? kthread_data+0x52/0xd0
[ 194.866659][ C1] ? schedule+0x90/0x320
[ 194.871011][ C1] ? wq_worker_sleeping+0x66/0x240
[ 194.876184][ C1] ? schedule+0x90/0x320
[ 194.880449][ C1] schedule+0x14b/0x320
[ 194.884641][ C1] schedule_preempt_disabled+0x13/0x30
[ 194.890158][ C1] __mutex_lock+0x6a4/0xd70
[ 194.894707][ C1] ? mark_lock+0x9a/0x360
[ 194.899201][ C1] ? __mutex_lock+0x527/0xd70
[ 194.903910][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 194.909085][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 194.914145][ C1] ? rtnl_lock+0xe7/0x130
[ 194.918534][ C1] addrconf_dad_work+0xd0/0x16f0
[ 194.923509][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 194.929111][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 194.935473][ C1] ? process_scheduled_works+0x945/0x1830
[ 194.941244][ C1] process_scheduled_works+0xa2c/0x1830
[ 194.946963][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 194.952974][ C1] ? assign_work+0x364/0x3d0
[ 194.957619][ C1] worker_thread+0x86d/0xd50
[ 194.962243][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 194.968199][ C1] ? __kthread_parkme+0x169/0x1d0
[ 194.973256][ C1] ? __pfx_worker_thread+0x10/0x10
[ 194.978420][ C1] kthread+0x2f0/0x390
[ 194.982532][ C1] ? __pfx_worker_thread+0x10/0x10
[ 194.987748][ C1] ? __pfx_kthread+0x10/0x10
[ 194.992361][ C1] ret_from_fork+0x4b/0x80
[ 194.996840][ C1] ? __pfx_kthread+0x10/0x10
[ 195.001450][ C1] ret_from_fork_asm+0x1a/0x30
[ 195.006293][ C1]
[ 195.009328][ C1]
[ 195.009328][ C1] Showing all locks held in the system:
[ 195.017096][ C1] 3 locks held by kworker/u8:4/61:
[ 195.022313][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 195.034072][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 195.046946][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 195.056496][ C1] 2 locks held by getty/4842:
[ 195.061186][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 195.071372][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 195.081746][ C1] 3 locks held by kworker/1:3/5108:
[ 195.086991][ C1] 2 locks held by syz-executor.0/5465:
[ 195.092546][ C1] 4 locks held by syz-executor.0/5468:
[ 195.098070][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 195.107814][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 195.118085][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 195.127925][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 195.137860][ C1] 1 lock held by sed/5467:
[ 195.142283][ C1]
[ 195.144978][ C1] =============================================
[ 195.144978][ C1]
[ 196.195745][ C1] DEBUG: holding rtnl_mutex for 11398 jiffies.
[ 196.202064][ C1] task:syz-executor.0 state:R running task stack:22512 pid:5465 tgid:5464 ppid:5394 flags:0x00004002
[ 196.213899][ C1] Call Trace:
[ 196.217231][ C1]
[ 196.220187][ C1] __schedule+0x17e8/0x4a20
[ 196.224743][ C1] ? __pfx___schedule+0x10/0x10
[ 196.229656][ C1] ? __pfx_lock_release+0x10/0x10
[ 196.234701][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 196.240664][ C1] ? schedule+0x90/0x320
[ 196.244930][ C1] schedule+0x14b/0x320
[ 196.249152][ C1] synchronize_rcu_expedited+0x684/0x830
[ 196.254820][ C1] ? __pfx_synchronize_rcu_expedited+0x10/0x10
[ 196.261137][ C1] ? mark_lock+0x9a/0x360
[ 196.265492][ C1] ? __pfx_wait_rcu_exp_gp+0x10/0x10
[ 196.270839][ C1] ? __pfx___might_resched+0x10/0x10
[ 196.276194][ C1] ? __pfx_autoremove_wake_function+0x10/0x10
[ 196.282296][ C1] synchronize_rcu+0x11b/0x360
[ 196.287130][ C1] ? __pfx_synchronize_rcu+0x10/0x10
[ 196.292441][ C1] ? lockdep_unlock+0x16a/0x300
[ 196.297343][ C1] ? __pfx_lockdep_unlock+0x10/0x10
[ 196.302598][ C1] lockdep_unregister_key+0x4b7/0x540
[ 196.308075][ C1] ? __pfx_lockdep_unregister_key+0x10/0x10
[ 196.314032][ C1] ? rcu_is_watching+0x15/0xb0
[ 196.318852][ C1] ? qdisc_reset+0x3bb/0x5a0
[ 196.323563][ C1] __qdisc_destroy+0x165/0x410
[ 196.328476][ C1] taprio_attach+0x24e/0x390
[ 196.333096][ C1] ? __pfx_taprio_attach+0x10/0x10
[ 196.338476][ C1] qdisc_graft+0x128a/0x1580
[ 196.343099][ C1] ? qdisc_graft+0x301/0x1580
[ 196.347919][ C1] ? __pfx_qdisc_graft+0x10/0x10
[ 196.352972][ C1] ? __pfx_qdisc_create+0x10/0x10
[ 196.358139][ C1] tc_modify_qdisc+0xf47/0x1e40
[ 196.363033][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 196.368403][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10
[ 196.373709][ C1] rtnetlink_rcv_msg+0x892/0x1170
[ 196.378799][ C1] ? rtnetlink_rcv_msg+0x208/0x1170
[ 196.384032][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 196.389725][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 196.395766][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 196.402123][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 196.407546][ C1] ? lockdep_hardirqs_on+0x99/0x150
[ 196.412774][ C1] ? __local_bh_enable_ip+0x168/0x200
[ 196.418195][ C1] ? dev_hard_start_xmit+0x773/0x7e0
[ 196.423498][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 196.428658][ C1] ? __pfx___local_bh_enable_ip+0x10/0x10
[ 196.434403][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 196.439565][ C1] ? __dev_queue_xmit+0x16c9/0x3d30
[ 196.444800][ C1] ? __dev_queue_xmit+0x2d2/0x3d30
[ 196.449977][ C1] ? ref_tracker_free+0x643/0x7e0
[ 196.455026][ C1] netlink_rcv_skb+0x1e3/0x430
[ 196.459851][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 196.465344][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 196.470707][ C1] ? netlink_deliver_tap+0x2e/0x1b0
[ 196.475964][ C1] netlink_unicast+0x7ea/0x980
[ 196.480760][ C1] ? __pfx_netlink_unicast+0x10/0x10
[ 196.486095][ C1] ? __virt_addr_valid+0x183/0x520
[ 196.491233][ C1] ? __check_object_size+0x49c/0x900
[ 196.496635][ C1] ? bpf_lsm_netlink_send+0x9/0x10
[ 196.501788][ C1] netlink_sendmsg+0x8db/0xcb0
[ 196.506789][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 196.512129][ C1] ? __import_iovec+0x536/0x820
[ 196.517044][ C1] ? aa_sock_msg_perm+0x91/0x160
[ 196.522003][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10
[ 196.527341][ C1] ? security_socket_sendmsg+0x87/0xb0
[ 196.532833][ C1] ? __pfx_netlink_sendmsg+0x10/0x10
[ 196.538168][ C1] __sock_sendmsg+0x221/0x270
[ 196.542876][ C1] ____sys_sendmsg+0x525/0x7d0
[ 196.547710][ C1] ? __pfx_____sys_sendmsg+0x10/0x10
[ 196.553119][ C1] __sys_sendmsg+0x2b0/0x3a0
[ 196.557854][ C1] ? __pfx___sys_sendmsg+0x10/0x10
[ 196.563037][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 196.569427][ C1] ? do_syscall_64+0x100/0x230
[ 196.574244][ C1] ? do_syscall_64+0xb6/0x230
[ 196.579043][ C1] do_syscall_64+0xf3/0x230
[ 196.583574][ C1] ? clear_bhb_loop+0x35/0x90
[ 196.588320][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 196.594254][ C1] RIP: 0033:0x7f33e447dda9
[ 196.598720][ C1] RSP: 002b:00007f33e528d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 196.607374][ C1] RAX: ffffffffffffffda RBX: 00007f33e45abf80 RCX: 00007f33e447dda9
[ 196.615453][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
[ 196.623524][ C1] RBP: 00007f33e44ca47a R08: 0000000000000000 R09: 0000000000000000
[ 196.631565][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 196.639681][ C1] R13: 000000000000000b R14: 00007f33e45abf80 R15: 00007ffd5e8bb608
[ 196.647748][ C1]
[ 196.650892][ C1] DEBUG: waiting rtnl_mutex for 11442 jiffies.
[ 196.657153][ C1] task:kworker/u8:4 state:D stack:21104 pid:61 tgid:61 ppid:2 flags:0x00004000
[ 196.667392][ C1] Workqueue: ipv6_addrconf addrconf_dad_work
[ 196.673412][ C1] Call Trace:
[ 196.676746][ C1]
[ 196.679702][ C1] __schedule+0x17e8/0x4a20
[ 196.684255][ C1] ? __pfx___schedule+0x10/0x10
[ 196.689171][ C1] ? __pfx_lock_release+0x10/0x10
[ 196.694218][ C1] ? __mutex_trylock_common+0x92/0x2e0
[ 196.699784][ C1] ? kthread_data+0x52/0xd0
[ 196.704341][ C1] ? schedule+0x90/0x320
[ 196.708759][ C1] ? wq_worker_sleeping+0x66/0x240
[ 196.713899][ C1] ? schedule+0x90/0x320
[ 196.718212][ C1] schedule+0x14b/0x320
[ 196.722419][ C1] schedule_preempt_disabled+0x13/0x30
[ 196.728002][ C1] __mutex_lock+0x6a4/0xd70
[ 196.732552][ C1] ? mark_lock+0x9a/0x360
[ 196.737046][ C1] ? __mutex_lock+0x527/0xd70
[ 196.741840][ C1] ? addrconf_dad_work+0xd0/0x16f0
[ 196.747187][ C1] ? __pfx___mutex_lock+0x10/0x10
[ 196.752247][ C1] ? rtnl_lock+0xe7/0x130
[ 196.756629][ C1] addrconf_dad_work+0xd0/0x16f0
[ 196.761605][ C1] ? __pfx_addrconf_dad_work+0x10/0x10
[ 196.767204][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 196.773586][ C1] ? process_scheduled_works+0x945/0x1830
[ 196.779358][ C1] process_scheduled_works+0xa2c/0x1830
[ 196.784968][ C1] ? __pfx_process_scheduled_works+0x10/0x10
[ 196.791081][ C1] ? assign_work+0x364/0x3d0
[ 196.795817][ C1] worker_thread+0x86d/0xd50
[ 196.800526][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 196.806561][ C1] ? __kthread_parkme+0x169/0x1d0
[ 196.811885][ C1] ? __pfx_worker_thread+0x10/0x10
[ 196.817053][ C1] kthread+0x2f0/0x390
[ 196.821235][ C1] ? __pfx_worker_thread+0x10/0x10
[ 196.826479][ C1] ? __pfx_kthread+0x10/0x10
[ 196.831139][ C1] ret_from_fork+0x4b/0x80
[ 196.835594][ C1] ? __pfx_kthread+0x10/0x10
[ 196.840285][ C1] ret_from_fork_asm+0x1a/0x30
[ 196.845133][ C1]
[ 196.848212][ C1]
[ 196.848212][ C1] Showing all locks held in the system:
[ 196.855977][ C1] 3 locks held by kworker/u8:4/61:
[ 196.861100][ C1] #0: ffff888029cfe948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 196.872767][ C1] #1: ffffc900015cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 196.885831][ C1] #2: ffffffff8f5ef4c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0
[ 196.895329][ C1] 2 locks held by getty/4842:
[ 196.900046][ C1] #0: ffff88802a60a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 196.909979][ C1] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10
[ 196.920167][ C1] 3 locks held by kworker/1:3/5108:
[ 196.925383][ C1] 2 locks held by syz-executor.0/5465:
[ 196.931057][ C1] 4 locks held by syz-executor.0/5468:
[ 196.936643][ C1] #0: ffffffff8e1cf750 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x12d/0x810
[ 196.946299][ C1] #1: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650
[ 196.956921][ C1] #2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0
[ 196.966941][ C1] #3: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0
[ 196.976953][ C1] 2 locks held by sed/5467:
[ 196.981472][ C1]
[ 196.983815][ C1] =============================================
[ 196.983815][ C1]