Warning: Permanently added '10.128.0.247' (ECDSA) to the list of known hosts. executing program executing program [ 488.801697][ T8445] IPVS: ftp: loaded support on port[0] = 21 [ 721.446901][ T1655] INFO: task kworker/0:1:8437 blocked for more than 143 seconds. [ 721.454864][ T1655] Not tainted 5.11.0-rc5-syzkaller #0 [ 721.463159][ T1655] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.472767][ T1655] task:kworker/0:1 state:D stack:29232 pid: 8437 ppid: 2 flags:0x00004000 [ 721.482821][ T1655] Workqueue: ipv6_addrconf addrconf_verify_work [ 721.490047][ T1655] Call Trace: [ 721.493342][ T1655] __schedule+0x90c/0x21a0 [ 721.498945][ T1655] ? io_schedule_timeout+0x140/0x140 [ 721.504265][ T1655] ? _raw_spin_unlock_irq+0x1f/0x40 [ 721.510693][ T1655] ? lockdep_hardirqs_on+0x79/0x100 [ 721.515942][ T1655] schedule+0xcf/0x270 [ 721.521324][ T1655] schedule_preempt_disabled+0xf/0x20 [ 721.527515][ T1655] __mutex_lock+0x81a/0x1110 [ 721.532131][ T1655] ? addrconf_verify_work+0xa/0x20 [ 721.538415][ T1655] ? mutex_lock_io_nested+0xf60/0xf60 [ 721.543815][ T1655] ? lock_release+0x710/0x710 [ 721.549735][ T1655] ? lock_downgrade+0x6d0/0x6d0 [ 721.554627][ T1655] addrconf_verify_work+0xa/0x20 [ 721.561894][ T1655] process_one_work+0x98d/0x15f0 [ 721.568213][ T1655] ? pwq_dec_nr_in_flight+0x320/0x320 [ 721.573617][ T1655] ? rwlock_bug.part.0+0x90/0x90 [ 721.579687][ T1655] ? _raw_spin_lock_irq+0x41/0x50 [ 721.584760][ T1655] worker_thread+0x64c/0x1120 [ 721.590668][ T1655] ? __kthread_parkme+0x13f/0x1e0 [ 721.595713][ T1655] ? process_one_work+0x15f0/0x15f0 [ 721.602018][ T1655] kthread+0x3b1/0x4a0 [ 721.606109][ T1655] ? __kthread_bind_mask+0xc0/0xc0 [ 721.612393][ T1655] ret_from_fork+0x1f/0x30 [ 721.617667][ T1655] [ 721.617667][ T1655] Showing all locks held in the system: [ 721.625390][ T1655] 1 lock held by khungtaskd/1655: [ 721.631606][ T1655] #0: ffffffff8b373da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 721.643223][ T1655] 1 lock held by in:imklog/8158: [ 721.648983][ T1655] #0: ffff8880114c99f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 721.659015][ T1655] 3 locks held by kworker/0:1/8437: [ 721.664219][ T1655] #0: ffff8881478b4938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 [ 721.676362][ T1655] #1: ffffc9000932fda8 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 [ 721.689111][ T1655] #2: ffffffff8ca58a28 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 721.699321][ T1655] 2 locks held by syz-executor103/8467: [ 721.704903][ T1655] [ 721.708720][ T1655] ============================================= [ 721.708720][ T1655] [ 721.718149][ T1655] NMI backtrace for cpu 0 [ 721.722484][ T1655] CPU: 0 PID: 1655 Comm: khungtaskd Not tainted 5.11.0-rc5-syzkaller #0 [ 721.730817][ T1655] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 721.740873][ T1655] Call Trace: [ 721.744151][ T1655] dump_stack+0x107/0x163 [ 721.748542][ T1655] nmi_cpu_backtrace.cold+0x44/0xd7 [ 721.753754][ T1655] ? lapic_can_unplug_cpu+0x80/0x80 [ 721.759004][ T1655] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 721.765026][ T1655] watchdog+0xd43/0xfa0 [ 721.769265][ T1655] ? reset_hung_task_detector+0x30/0x30 [ 721.774839][ T1655] kthread+0x3b1/0x4a0 [ 721.778915][ T1655] ? __kthread_bind_mask+0xc0/0xc0 [ 721.784036][ T1655] ret_from_fork+0x1f/0x30 [ 721.788659][ T1655] Sending NMI from CPU 0 to CPUs 1: [ 721.795365][ C1] NMI backtrace for cpu 1 [ 721.795374][ C1] CPU: 1 PID: 8467 Comm: syz-executor103 Not tainted 5.11.0-rc5-syzkaller #0 [ 721.795384][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 721.795394][ C1] RIP: 0010:__kasan_check_read+0x8/0x10 [ 721.795405][ C1] Code: db 0f 85 a4 79 05 07 48 83 c4 60 5b 5d 41 5c 41 5d c3 c3 e9 a4 7a 05 07 cc cc cc cc cc cc cc cc cc cc 48 8b 0c 24 89 f6 31 d2 23 f9 ff ff 0f 1f 00 48 8b 0c 24 89 f6 ba 01 00 00 00 e9 10 f9 [ 721.795421][ C1] RSP: 0018:ffffc9000166ea70 EFLAGS: 00000246 [ 721.795433][ C1] RAX: 0000000000000000 RBX: 1ffff920002cdd51 RCX: ffffffff8158c3b8 [ 721.795442][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d038488 [ 721.795450][ C1] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 [ 721.795459][ C1] R10: ffffed100221ed40 R11: 0000000000000000 R12: 0000000000000000 [ 721.795468][ C1] R13: ffff8880110f6a68 R14: 0000000000000000 R15: 0000000000000000 [ 721.795477][ C1] FS: 0000000000bdd880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 721.795486][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 721.795493][ C1] CR2: 00007ffd91ce3bf0 CR3: 0000000024ed0000 CR4: 00000000001506e0 [ 721.795502][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 721.795511][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 721.795519][ C1] Call Trace: [ 721.795523][ C1] lock_acquire+0xb8/0x720 [ 721.795528][ C1] ? lock_release+0x710/0x710 [ 721.795534][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 721.795541][ C1] __mutex_lock+0x134/0x1110 [ 721.795546][ C1] ? tcf_idr_check_alloc+0x78/0x3b0 [ 721.795552][ C1] ? tcf_idr_check_alloc+0x78/0x3b0 [ 721.795558][ C1] ? mutex_lock_io_nested+0xf60/0xf60 [ 721.795564][ C1] ? __mutex_unlock_slowpath+0xe2/0x610 [ 721.795570][ C1] ? check_kcov_mode+0x2e/0x40 [ 721.795576][ C1] ? wait_for_completion_io+0x260/0x260 [ 721.795582][ C1] ? __radix_tree_lookup+0x211/0x2a0 [ 721.795588][ C1] tcf_idr_check_alloc+0x78/0x3b0 [ 721.795594][ C1] tcf_police_init+0x34f/0x1460 [ 721.795599][ C1] ? tcf_police_cleanup+0x60/0x60 [ 721.795605][ C1] ? find_held_lock+0x2d/0x110 [ 721.795611][ C1] ? tc_lookup_action_n+0xcd/0xf0 [ 721.795617][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 721.795623][ C1] ? __kernel_text_address+0x9/0x30 [ 721.795629][ C1] tcf_action_init_1+0x1a3/0x990 [ 721.795635][ C1] ? tcf_action_dump_old+0x80/0x80 [ 721.795640][ C1] ? find_held_lock+0x2d/0x110 [ 721.795646][ C1] ? pcpu_alloc+0x1239/0x16f0 [ 721.795651][ C1] ? lock_downgrade+0x6d0/0x6d0 [ 721.795657][ C1] tcf_exts_validate+0x138/0x420 [ 721.795663][ C1] ? tcf_exts_destroy+0xc0/0xc0 [ 721.795669][ C1] ? __mutex_unlock_slowpath+0xe2/0x610 [ 721.795675][ C1] ? wait_for_completion_io+0x260/0x260 [ 721.795681][ C1] u32_set_parms+0xb9/0xc60 [ 721.795687][ C1] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 721.795693][ C1] ? u32_bind_class+0x2c0/0x2c0 [ 721.795699][ C1] u32_change+0x1f13/0x3000 [ 721.795704][ C1] ? u32_dump+0x1030/0x1030 [ 721.795709][ C1] ? blackhole_dequeue+0x10/0x10 [ 721.795715][ C1] ? u32_lookup_ht+0x1d0/0x1d0 [ 721.795721][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 721.795727][ C1] ? tc_new_tfilter+0x132a/0x2120 [ 721.795733][ C1] tc_new_tfilter+0x1394/0x2120 [ 721.795739][ C1] ? u32_dump+0x1030/0x1030 [ 721.795744][ C1] ? tc_del_tfilter+0x15b0/0x15b0 [ 721.795750][ C1] ? lock_chain_count+0x20/0x20 [ 721.795756][ C1] ? kernel_text_address+0xbd/0xf0 [ 721.795761][ C1] ? tc_del_tfilter+0x15b0/0x15b0 [ 721.795767][ C1] rtnetlink_rcv_msg+0x80e/0xad0 [ 721.795773][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 721.795779][ C1] netlink_rcv_skb+0x153/0x420 [ 721.795785][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 721.795791][ C1] ? netlink_ack+0xaa0/0xaa0 [ 721.795796][ C1] ? netlink_deliver_tap+0x227/0xb70 [ 721.795802][ C1] netlink_unicast+0x533/0x7d0 [ 721.795808][ C1] ? netlink_attachskb+0x870/0x870 [ 721.795814][ C1] ? _copy_from_iter_full+0x275/0x850 [ 721.795821][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 721.795827][ C1] ? __phys_addr_symbol+0x2c/0x70 [ 721.795834][ C1] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 721.795840][ C1] ? __check_object_size+0x171/0x3f0 [ 721.795845][ C1] netlink_sendmsg+0x856/0xd90 [ 721.795851][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 721.795857][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 721.795864][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 721.795869][ C1] sock_sendmsg+0xcf/0x120 [ 721.795874][ C1] ____sys_sendmsg+0x331/0x810 [ 721.795878][ C1] ? kernel_sendmsg+0x50/0x50 [ 721.795883][ C1] ? do_recvmmsg+0x6c0/0x6c0 [ 721.795888][ C1] ? __lock_acquire+0x16c2/0x54f0 [ 721.795893][ C1] ___sys_sendmsg+0xf3/0x170 [ 721.795897][ C1] ? sendmsg_copy_msghdr+0x160/0x160 [ 721.795902][ C1] ? find_held_lock+0x2d/0x110 [ 721.795907][ C1] ? __might_fault+0xd3/0x180 [ 721.795912][ C1] ? lock_downgrade+0x6d0/0x6d0 [ 721.795917][ C1] __sys_sendmmsg+0x195/0x470 [ 721.795921][ C1] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 721.795927][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 721.795933][ C1] ? sockfd_lookup_light+0xc5/0x180 [ 721.795938][ C1] ? __sys_sendmsg+0x10c/0x1b0 [ 721.795942][ C1] ? __sys_sendmsg_sock+0xb0/0xb0 [ 721.795948][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 721.795953][ C1] __x64_sys_sendmmsg+0x99/0x100 [ 721.795959][ C1] ? syscall_enter_from_user_mode+0x1d/0x50 [ 721.795964][ C1] do_syscall_64+0x2d/0x70 [ 721.795969][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 721.795974][ C1] RIP: 0033:0x4417b9 [ 721.795983][ 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 [ 721.795997][ C1] RSP: 002b:00007ffd91ce3be8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 721.796008][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004417b9 [ 721.796016][ C1] RDX: 010efe10675dec16 RSI: 0000000020000200 RDI: 0000000000000003 [ 721.796024][ C1] RBP: 00007ffd91ce3bf0 R08: 0000000100000000 R09: 0000000100000000 [ 721.796031][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000775b6 [ 721.796039][ C1] R13: 0000000000402690 R14: 0000000000000000 R15: 0000000000000000 [ 721.796047][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.465 msecs [ 721.806791][ T1655] Kernel panic - not syncing: hung_task: blocked tasks [ 722.427068][ T1655] CPU: 0 PID: 1655 Comm: khungtaskd Not tainted 5.11.0-rc5-syzkaller #0 [ 722.435401][ T1655] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 722.445456][ T1655] Call Trace: [ 722.448740][ T1655] dump_stack+0x107/0x163 [ 722.453086][ T1655] panic+0x306/0x73d [ 722.457059][ T1655] ? __warn_printk+0xf3/0xf3 [ 722.461666][ T1655] ? lapic_can_unplug_cpu+0x80/0x80 [ 722.466887][ T1655] ? preempt_schedule_thunk+0x16/0x18 [ 722.472270][ T1655] ? nmi_trigger_cpumask_backtrace+0x196/0x230 [ 722.478437][ T1655] ? watchdog.cold+0x5/0x158 [ 722.483063][ T1655] watchdog.cold+0x16/0x158 [ 722.487580][ T1655] ? reset_hung_task_detector+0x30/0x30 [ 722.493141][ T1655] kthread+0x3b1/0x4a0 [ 722.497218][ T1655] ? __kthread_bind_mask+0xc0/0xc0 [ 722.502341][ T1655] ret_from_fork+0x1f/0x30 [ 722.507475][ T1655] Kernel Offset: disabled [ 722.511869][ T1655] Rebooting in 86400 seconds..