Warning: Permanently added '10.128.0.135' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 486.040649][ T8490] IPVS: ftp: loaded support on port[0] = 21
[ 716.279049][ T1656] INFO: task kworker/u4:0:8 blocked for more than 143 seconds.
[ 716.286762][ T1656] Not tainted 5.10.0-syzkaller #0
[ 716.295345][ T1656] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 716.304801][ T1656] task:kworker/u4:0 state:D stack:23600 pid: 8 ppid: 2 flags:0x00004000
[ 716.314687][ T1656] Workqueue: tc_filter_workqueue tcindex_partial_destroy_work
[ 716.323042][ T1656] Call Trace:
[ 716.326353][ T1656] __schedule+0x8cd/0x2150
[ 716.331830][ T1656] ? io_schedule_timeout+0x140/0x140
[ 716.337143][ T1656] schedule+0xcf/0x270
[ 716.342372][ T1656] schedule_preempt_disabled+0xf/0x20
[ 716.347756][ T1656] __mutex_lock+0x81a/0x1110
[ 716.353370][ T1656] ? tcindex_partial_destroy_work+0x13/0x50
[ 716.359955][ T1656] ? mutex_lock_io_nested+0xf60/0xf60
[ 716.365342][ T1656] ? lock_release+0x710/0x710
[ 716.371547][ T1656] tcindex_partial_destroy_work+0x13/0x50
[ 716.377282][ T1656] process_one_work+0x933/0x15a0
[ 716.383338][ T1656] ? lock_release+0x710/0x710
[ 716.388026][ T1656] ? pwq_dec_nr_in_flight+0x320/0x320
[ 716.394431][ T1656] ? rwlock_bug.part.0+0x90/0x90
[ 716.400116][ T1656] ? _raw_spin_lock_irq+0x41/0x50
[ 716.405164][ T1656] worker_thread+0x64c/0x1120
[ 716.410887][ T1656] ? process_one_work+0x15a0/0x15a0
[ 716.416097][ T1656] kthread+0x3b1/0x4a0
[ 716.422485][ T1656] ? kthread_create_worker_on_cpu+0xf0/0xf0
[ 716.428395][ T1656] ret_from_fork+0x1f/0x30
[ 716.434001][ T1656] INFO: task kworker/0:0:8482 blocked for more than 143 seconds.
[ 716.442465][ T1656] Not tainted 5.10.0-syzkaller #0
[ 716.448014][ T1656] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 716.458626][ T1656] task:kworker/0:0 state:D stack:29224 pid: 8482 ppid: 2 flags:0x00004000
[ 716.468562][ T1656] Workqueue: ipv6_addrconf addrconf_verify_work
[ 716.475437][ T1656] Call Trace:
[ 716.478741][ T1656] __schedule+0x8cd/0x2150
[ 716.484217][ T1656] ? io_schedule_timeout+0x140/0x140
[ 716.490167][ T1656] ? _raw_spin_unlock_irq+0x1f/0x40
[ 716.495378][ T1656] ? lockdep_hardirqs_on+0x79/0x100
[ 716.501654][ T1656] schedule+0xcf/0x270
[ 716.505737][ T1656] schedule_preempt_disabled+0xf/0x20
[ 716.512155][ T1656] __mutex_lock+0x81a/0x1110
[ 716.516761][ T1656] ? addrconf_verify_work+0xa/0x20
[ 716.522947][ T1656] ? mutex_lock_io_nested+0xf60/0xf60
[ 716.528334][ T1656] ? lock_release+0x710/0x710
[ 716.534243][ T1656] ? lock_downgrade+0x6d0/0x6d0
[ 716.539762][ T1656] addrconf_verify_work+0xa/0x20
[ 716.544707][ T1656] process_one_work+0x933/0x15a0
[ 716.552101][ T1656] ? lock_release+0x710/0x710
[ 716.556791][ T1656] ? pwq_dec_nr_in_flight+0x320/0x320
[ 716.563283][ T1656] ? rwlock_bug.part.0+0x90/0x90
[ 716.568230][ T1656] ? _raw_spin_lock_irq+0x41/0x50
[ 716.574311][ T1656] worker_thread+0x64c/0x1120
[ 716.579969][ T1656] ? __kthread_parkme+0x13f/0x1e0
[ 716.585004][ T1656] ? process_one_work+0x15a0/0x15a0
[ 716.591233][ T1656] kthread+0x3b1/0x4a0
[ 716.595318][ T1656] ? kthread_create_worker_on_cpu+0xf0/0xf0
[ 716.602265][ T1656] ret_from_fork+0x1f/0x30
[ 716.606733][ T1656]
[ 716.606733][ T1656] Showing all locks held in the system:
[ 716.615574][ T1656] 3 locks held by kworker/u4:0/8:
[ 716.621271][ T1656] #0: ffff88814171b138 ((wq_completion)tc_filter_workqueue){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0
[ 716.633463][ T1656] #1: ffffc90000cd7da8 ((work_completion)(&(rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0
[ 716.645540][ T1656] #2: ffffffff8c935348 (rtnl_mutex){+.+.}-{3:3}, at: tcindex_partial_destroy_work+0x13/0x50
[ 716.656371][ T1656] 1 lock held by khungtaskd/1656:
[ 716.662023][ T1656] #0: ffffffff8b33a020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260
[ 716.673145][ T1656] 1 lock held by in:imklog/8180:
[ 716.678083][ T1656] #0: ffff88801dabc870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100
[ 716.689674][ T1656] 3 locks held by kworker/0:0/8482:
[ 716.694874][ T1656] #0: ffff888020e3ed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0
[ 716.706971][ T1656] #1: ffffc9000911fda8 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0
[ 716.717914][ T1656] #2: ffffffff8c935348 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20
[ 716.728092][ T1656] 2 locks held by syz-executor434/8511:
[ 716.734300][ T1656]
[ 716.736630][ T1656] =============================================
[ 716.736630][ T1656]
[ 716.746889][ T1656] NMI backtrace for cpu 0
[ 716.751417][ T1656] CPU: 0 PID: 1656 Comm: khungtaskd Not tainted 5.10.0-syzkaller #0
[ 716.759388][ T1656] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 716.769440][ T1656] Call Trace:
[ 716.772735][ T1656] dump_stack+0x107/0x163
[ 716.777069][ T1656] nmi_cpu_backtrace.cold+0x44/0xd7
[ 716.782268][ T1656] ? lapic_can_unplug_cpu+0x80/0x80
[ 716.787465][ T1656] nmi_trigger_cpumask_backtrace+0x1b3/0x230
[ 716.793455][ T1656] watchdog+0xd43/0xfa0
[ 716.797617][ T1656] ? reset_hung_task_detector+0x30/0x30
[ 716.803172][ T1656] kthread+0x3b1/0x4a0
[ 716.807245][ T1656] ? kthread_create_worker_on_cpu+0xf0/0xf0
[ 716.813142][ T1656] ret_from_fork+0x1f/0x30
[ 716.817638][ T1656] Sending NMI from CPU 0 to CPUs 1:
[ 716.823983][ C1] NMI backtrace for cpu 1
[ 716.823990][ C1] CPU: 1 PID: 8511 Comm: syz-executor434 Not tainted 5.10.0-syzkaller #0
[ 716.823997][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 716.824001][ C1] RIP: 0010:rcu_is_watching+0x9/0xc0
[ 716.824014][ C1] Code: 00 48 c7 c7 40 cb 4c 89 e8 54 86 8f 07 65 8a 05 01 45 a6 7e 0f be c0 c3 66 0f 1f 84 00 00 00 00 00 55 53 65 ff 05 d7 d8 a4 7e <e8> 12 86 8f 07 48 c7 c3 80 5a 03 00 83 f8 07 89 c5 0f 87 81 00 00
[ 716.824019][ C1] RSP: 0018:ffffc900015fe978 EFLAGS: 00000286
[ 716.824029][ C1] RAX: 0000000000000001 RBX: 1ffff920002bfd36 RCX: ffffffff8156b128
[ 716.824034][ C1] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff8ced8308
[ 716.824040][ C1] RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8ced830f
[ 716.824046][ C1] R10: fffffbfff19db061 R11: 0000000000000000 R12: 0000000000000001
[ 716.824052][ C1] R13: ffff8880147e7e68 R14: 0000000000000000 R15: 0000000000000000
[ 716.824058][ C1] FS: 0000000001b31880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
[ 716.824063][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 716.824069][ C1] CR2: 00007f2f559b9000 CR3: 0000000010f11000 CR4: 00000000001506e0
[ 716.824075][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 716.824081][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 716.824084][ C1] Call Trace:
[ 716.824088][ C1] rcu_read_lock_sched_held+0x1c/0x70
[ 716.824092][ C1] lock_acquire+0x5c9/0x740
[ 716.824096][ C1] ? lock_release+0x710/0x710
[ 716.824100][ C1] __mutex_lock+0x134/0x1110
[ 716.824104][ C1] ? tcf_idr_check_alloc+0x78/0x3b0
[ 716.824108][ C1] ? tcf_idr_check_alloc+0x78/0x3b0
[ 716.824113][ C1] ? mutex_lock_io_nested+0xf60/0xf60
[ 716.824117][ C1] ? __mutex_unlock_slowpath+0xe2/0x610
[ 716.824122][ C1] ? wait_for_completion_io+0x260/0x260
[ 716.824126][ C1] tcf_idr_check_alloc+0x78/0x3b0
[ 716.824130][ C1] tcf_police_init+0x347/0x13a0
[ 716.824134][ C1] ? tcf_police_cleanup+0x60/0x60
[ 716.824138][ C1] ? find_held_lock+0x2d/0x110
[ 716.824142][ C1] ? tc_lookup_action_n+0xcd/0xf0
[ 716.824146][ C1] ? stack_trace_consume_entry+0x160/0x160
[ 716.824150][ C1] tcf_action_init_1+0x1a3/0x990
[ 716.824155][ C1] ? tcf_action_dump_old+0x80/0x80
[ 716.824159][ C1] ? ____sys_sendmsg+0x331/0x810
[ 716.824162][ C1] ? ___sys_sendmsg+0xf3/0x170
[ 716.824166][ C1] ? __sys_sendmmsg+0x195/0x470
[ 716.824171][ C1] ? __x64_sys_sendmmsg+0x99/0x100
[ 716.824174][ C1] ? do_syscall_64+0x2d/0x70
[ 716.824179][ C1] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 716.824183][ C1] ? find_held_lock+0x2d/0x110
[ 716.824187][ C1] tcf_exts_validate+0x138/0x420
[ 716.824191][ C1] ? tcf_exts_destroy+0xc0/0xc0
[ 716.824195][ C1] ? kasan_unpoison_shadow+0x33/0x40
[ 716.824199][ C1] tcindex_set_parms+0x189/0x20d0
[ 716.824204][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x400
[ 716.824209][ C1] ? tcindex_alloc_perfect_hash+0x440/0x440
[ 716.824213][ C1] ? __nla_validate_parse+0x2d3/0x2ae0
[ 716.824217][ C1] ? nla_get_range_signed+0x520/0x520
[ 716.824221][ C1] ? find_held_lock+0x2d/0x110
[ 716.824225][ C1] tcindex_change+0x212/0x320
[ 716.824229][ C1] ? tcindex_set_parms+0x20d0/0x20d0
[ 716.824233][ C1] tc_new_tfilter+0x1394/0x2120
[ 716.824237][ C1] ? tcindex_set_parms+0x20d0/0x20d0
[ 716.824241][ C1] ? tc_del_tfilter+0x15b0/0x15b0
[ 716.824246][ C1] ? kernel_text_address+0xbd/0xf0
[ 716.824250][ C1] ? tc_del_tfilter+0x15b0/0x15b0
[ 716.824254][ C1] rtnetlink_rcv_msg+0x80e/0xad0
[ 716.824258][ C1] ? rtnetlink_put_metrics+0x510/0x510
[ 716.824262][ C1] netlink_rcv_skb+0x153/0x420
[ 716.824266][ C1] ? rtnetlink_put_metrics+0x510/0x510
[ 716.824270][ C1] ? netlink_ack+0xaa0/0xaa0
[ 716.824275][ C1] ? netlink_deliver_tap+0x227/0xb70
[ 716.824278][ C1] netlink_unicast+0x533/0x7d0
[ 716.824283][ C1] ? netlink_attachskb+0x870/0x870
[ 716.824287][ C1] ? __phys_addr_symbol+0x2c/0x70
[ 716.824291][ C1] ? __check_object_size+0x171/0x3f0
[ 716.824295][ C1] netlink_sendmsg+0x856/0xd90
[ 716.824299][ C1] ? netlink_unicast+0x7d0/0x7d0
[ 716.824308][ C1] ? bpf_lsm_socket_sendmsg+0x5/0x10
[ 716.824312][ C1] ? netlink_unicast+0x7d0/0x7d0
[ 716.824316][ C1] sock_sendmsg+0xcf/0x120
[ 716.824320][ C1] ____sys_sendmsg+0x331/0x810
[ 716.824324][ C1] ? kernel_sendmsg+0x50/0x50
[ 716.824327][ C1] ? do_recvmmsg+0x6c0/0x6c0
[ 716.824332][ C1] ? __lock_acquire+0x16b7/0x5500
[ 716.824335][ C1] ___sys_sendmsg+0xf3/0x170
[ 716.824340][ C1] ? sendmsg_copy_msghdr+0x160/0x160
[ 716.824344][ C1] ? find_held_lock+0x2d/0x110
[ 716.824348][ C1] ? __might_fault+0xd3/0x180
[ 716.824352][ C1] ? lock_downgrade+0x6d0/0x6d0
[ 716.824355][ C1] __sys_sendmmsg+0x195/0x470
[ 716.824359][ C1] ? __ia32_sys_sendmsg+0xb0/0xb0
[ 716.824364][ C1] ? sockfd_lookup_light+0xc5/0x180
[ 716.824368][ C1] ? __sys_sendmsg+0x10c/0x1b0
[ 716.824372][ C1] ? __sys_sendmsg_sock+0xb0/0xb0
[ 716.824376][ C1] __x64_sys_sendmmsg+0x99/0x100
[ 716.824380][ C1] ? syscall_enter_from_user_mode+0x1d/0x50
[ 716.824384][ C1] do_syscall_64+0x2d/0x70
[ 716.824389][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 716.824392][ C1] RIP: 0033:0x443669
[ 716.824404][ C1] Code: e8 5c ad 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 bb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[ 716.824409][ C1] RSP: 002b:00007ffd32f10c58 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
[ 716.824419][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443669
[ 716.824425][ C1] RDX: 010efe10675dec16 RSI: 0000000020000200 RDI: 0000000000000003
[ 716.824431][ C1] RBP: 00007ffd32f10c60 R08: 0000000120080522 R09: 0000000120080522
[ 716.824437][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004a4a30
[ 716.824443][ C1] R13: 0000000000404540 R14: 0000000000000000 R15: 0000000000000000
[ 716.824450][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.040 msecs
[ 716.826163][ T1656] Kernel panic - not syncing: hung_task: blocked tasks
[ 717.416978][ T1656] CPU: 0 PID: 1656 Comm: khungtaskd Not tainted 5.10.0-syzkaller #0
[ 717.425295][ T1656] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 717.438815][ T1656] Call Trace:
[ 717.442111][ T1656] dump_stack+0x107/0x163
[ 717.446438][ T1656] panic+0x306/0x73d
[ 717.450339][ T1656] ? __warn_printk+0xf3/0xf3
[ 717.454956][ T1656] ? lapic_can_unplug_cpu+0x80/0x80
[ 717.460157][ T1656] ? preempt_schedule_thunk+0x16/0x18
[ 717.465528][ T1656] ? watchdog.cold+0x5/0x158
[ 717.470125][ T1656] ? watchdog+0xa80/0xfa0
[ 717.474456][ T1656] watchdog.cold+0x16/0x158
[ 717.479142][ T1656] ? reset_hung_task_detector+0x30/0x30
[ 717.484688][ T1656] kthread+0x3b1/0x4a0
[ 717.488755][ T1656] ? kthread_create_worker_on_cpu+0xf0/0xf0
[ 717.494647][ T1656] ret_from_fork+0x1f/0x30
[ 717.500015][ T1656] Kernel Offset: disabled
[ 717.504371][ T1656] Rebooting in 86400 seconds..