Warning: Permanently added '10.128.0.69' (ECDSA) to the list of known hosts. executing program [ 483.210914][ T6877] IPVS: ftp: loaded support on port[0] = 21 [ 636.702683][ T1176] INFO: task kworker/u4:1:6886 blocked for more than 143 seconds. [ 636.710683][ T1176] Not tainted 5.9.0-rc8-syzkaller #0 [ 636.719567][ T1176] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 636.731173][ T1176] task:kworker/u4:1 state:D stack:28736 pid: 6886 ppid: 2 flags:0x00004000 [ 636.741783][ T1176] Workqueue: tc_filter_workqueue tcindex_partial_destroy_work [ 636.750396][ T1176] Call Trace: [ 636.754685][ T1176] __schedule+0xec9/0x2280 [ 636.759128][ T1176] ? io_schedule_timeout+0x140/0x140 [ 636.765934][ T1176] schedule+0xd0/0x2a0 [ 636.770046][ T1176] schedule_preempt_disabled+0xf/0x20 [ 636.776848][ T1176] __mutex_lock+0x3e2/0x10e0 [ 636.781478][ T1176] ? tcindex_partial_destroy_work+0x13/0x50 [ 636.789014][ T1176] ? mutex_lock_io_nested+0xf60/0xf60 [ 636.796389][ T1176] ? process_one_work+0x85f/0x1670 [ 636.801933][ T1176] ? lock_release+0x8f0/0x8f0 [ 636.808005][ T1176] ? _raw_spin_unlock_irq+0x1f/0x80 [ 636.814088][ T1176] ? _raw_spin_unlock_irq+0x1f/0x80 [ 636.819309][ T1176] tcindex_partial_destroy_work+0x13/0x50 [ 636.826403][ T1176] process_one_work+0x94c/0x1670 [ 636.831374][ T1176] ? lock_release+0x8f0/0x8f0 [ 636.837414][ T1176] ? pwq_dec_nr_in_flight+0x320/0x320 [ 636.844576][ T1176] ? rwlock_bug.part.0+0x90/0x90 [ 636.849533][ T1176] ? lockdep_hardirqs_off+0x96/0xd0 [ 636.857256][ T1176] worker_thread+0x64c/0x1120 [ 636.861963][ T1176] ? __kthread_parkme+0x13f/0x1e0 [ 636.868351][ T1176] ? process_one_work+0x1670/0x1670 [ 636.874449][ T1176] kthread+0x3b5/0x4a0 [ 636.878531][ T1176] ? __kthread_bind_mask+0xc0/0xc0 [ 636.885362][ T1176] ret_from_fork+0x1f/0x30 [ 636.889882][ T1176] [ 636.889882][ T1176] Showing all locks held in the system: [ 636.899158][ T1176] 1 lock held by khungtaskd/1176: [ 636.906057][ T1176] #0: ffffffff8a067f40 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 636.916739][ T1176] 1 lock held by in:imklog/6578: [ 636.921675][ T1176] #0: ffff8880a6b45370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 636.932195][ T1176] 3 locks held by kworker/0:1/6869: [ 636.938241][ T1176] #0: ffff88809a759d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x82b/0x1670 [ 636.950466][ T1176] #1: ffffc90000e17da8 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x85f/0x1670 [ 636.961749][ T1176] #2: ffffffff8b150988 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 636.972384][ T1176] 3 locks held by kworker/u4:1/6886: [ 636.978546][ T1176] #0: ffff88821a8d2138 ((wq_completion)tc_filter_workqueue){+.+.}-{0:0}, at: process_one_work+0x82b/0x1670 [ 636.992132][ T1176] #1: ffffc90000e97da8 ((work_completion)(&(rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x85f/0x1670 [ 637.004521][ T1176] #2: ffffffff8b150988 (rtnl_mutex){+.+.}-{3:3}, at: tcindex_partial_destroy_work+0x13/0x50 [ 637.015679][ T1176] 2 locks held by syz-executor608/6899: [ 637.021263][ T1176] [ 637.025084][ T1176] ============================================= [ 637.025084][ T1176] [ 637.034517][ T1176] NMI backtrace for cpu 0 [ 637.038857][ T1176] CPU: 0 PID: 1176 Comm: khungtaskd Not tainted 5.9.0-rc8-syzkaller #0 [ 637.047085][ T1176] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 637.057167][ T1176] Call Trace: [ 637.060565][ T1176] dump_stack+0x198/0x1fd [ 637.064906][ T1176] nmi_cpu_backtrace.cold+0x70/0xb1 [ 637.070148][ T1176] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 637.075807][ T1176] nmi_trigger_cpumask_backtrace+0x1b3/0x223 [ 637.081848][ T1176] watchdog+0xd7d/0x1000 [ 637.086100][ T1176] ? reset_hung_task_detector+0x30/0x30 [ 637.091644][ T1176] kthread+0x3b5/0x4a0 [ 637.095709][ T1176] ? __kthread_bind_mask+0xc0/0xc0 [ 637.100828][ T1176] ret_from_fork+0x1f/0x30 [ 637.105486][ T1176] Sending NMI from CPU 0 to CPUs 1: [ 637.112207][ C1] NMI backtrace for cpu 1 [ 637.112214][ C1] CPU: 1 PID: 6899 Comm: syz-executor608 Not tainted 5.9.0-rc8-syzkaller #0 [ 637.112221][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 637.112226][ C1] RIP: 0010:__radix_tree_lookup+0x149/0x290 [ 637.112237][ C1] Code: d2 74 06 0f 8e 12 01 00 00 45 0f b6 37 49 89 ed 44 89 f1 49 d3 ed 41 83 e5 3f 4b 8d 7c ef 28 48 89 fa 48 c1 ea 03 80 3c 1a 00 <0f> 85 e1 00 00 00 49 8d 55 04 4d 8b 64 d7 08 4f 8d 6c ef 28 49 81 [ 637.112242][ C1] RSP: 0018:ffffc900052e6b90 EFLAGS: 00000246 [ 637.112251][ C1] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000006 [ 637.112256][ C1] RDX: 1ffff110148e1c85 RSI: ffffffff83d8633e RDI: ffff8880a470e428 [ 637.112262][ C1] RBP: 0000000000001000 R08: 0000000000000000 R09: ffff8880a11c4a07 [ 637.112267][ C1] R10: 0000000000000002 R11: 0000000000000000 R12: 1ffff110148e1c80 [ 637.112273][ C1] R13: 0000000000000000 R14: 0000000000000006 R15: ffff8880a470e400 [ 637.112279][ C1] FS: 0000000001cb3880(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 [ 637.112284][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 637.112289][ C1] CR2: 00000000006cd080 CR3: 000000009141c000 CR4: 00000000001506e0 [ 637.112295][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 637.112300][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 637.112303][ C1] Call Trace: [ 637.112307][ C1] tcf_idr_check_alloc+0xb0/0x3b0 [ 637.112311][ C1] tcf_police_init+0x347/0x13a0 [ 637.112322][ C1] ? tcf_police_cleanup+0x60/0x60 [ 637.112326][ C1] ? find_held_lock+0x2d/0x110 [ 637.112330][ C1] ? tc_lookup_action_n+0xcd/0xf0 [ 637.112334][ C1] tcf_action_init_1+0x1a3/0x990 [ 637.112338][ C1] ? tcf_action_dump_old+0x80/0x80 [ 637.112342][ C1] ? lock_acquire+0x1f3/0xaf0 [ 637.112346][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.112349][ C1] ? find_held_lock+0x2d/0x110 [ 637.112353][ C1] ? fs_reclaim_release+0x90/0xd0 [ 637.112357][ C1] ? mark_lock+0x82/0x1660 [ 637.112361][ C1] ? mark_lock+0x82/0x1660 [ 637.112365][ C1] tcf_exts_validate+0x138/0x420 [ 637.112369][ C1] ? tcf_exts_destroy+0xc0/0xc0 [ 637.112373][ C1] ? kmem_cache_alloc_trace+0x18e/0x300 [ 637.112377][ C1] tcindex_set_parms+0x189/0x20d0 [ 637.112382][ C1] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 637.112386][ C1] ? tcindex_alloc_perfect_hash+0x440/0x440 [ 637.112390][ C1] ? __nla_validate_parse+0x2d4/0x2210 [ 637.112394][ C1] ? nla_get_range_signed+0x520/0x520 [ 637.112398][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.112402][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.112411][ C1] ? find_held_lock+0x2d/0x110 [ 637.112415][ C1] tcindex_change+0x203/0x2e0 [ 637.112419][ C1] ? tcindex_set_parms+0x20d0/0x20d0 [ 637.112423][ C1] ? tcindex_lookup+0x390/0x390 [ 637.112427][ C1] ? lockdep_rtnl_is_held+0x22/0x30 [ 637.112430][ C1] tc_new_tfilter+0x1398/0x2130 [ 637.112435][ C1] ? tcindex_set_parms+0x20d0/0x20d0 [ 637.112439][ C1] ? tc_del_tfilter+0x15c0/0x15c0 [ 637.112443][ C1] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 637.112449][ C1] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 637.112453][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.112457][ C1] ? security_capable+0x8f/0xc0 [ 637.112461][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.112465][ C1] ? tc_del_tfilter+0x15c0/0x15c0 [ 637.112469][ C1] rtnetlink_rcv_msg+0x80f/0xad0 [ 637.112473][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 637.112477][ C1] ? lock_acquire+0x1f3/0xaf0 [ 637.112481][ C1] ? netlink_deliver_tap+0x146/0xb70 [ 637.112484][ C1] netlink_rcv_skb+0x15a/0x430 [ 637.112489][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 637.112493][ C1] ? netlink_ack+0xa10/0xa10 [ 637.112497][ C1] ? __kmalloc_node_track_caller+0x38/0x60 [ 637.112501][ C1] netlink_unicast+0x533/0x7d0 [ 637.112505][ C1] ? netlink_attachskb+0x810/0x810 [ 637.112509][ C1] ? __phys_addr_symbol+0x2c/0x70 [ 637.112513][ C1] ? __check_object_size+0x171/0x3e4 [ 637.112517][ C1] netlink_sendmsg+0x856/0xd90 [ 637.112521][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 637.112525][ C1] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 637.112529][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 637.112532][ C1] sock_sendmsg+0xcf/0x120 [ 637.112536][ C1] ____sys_sendmsg+0x331/0x810 [ 637.112540][ C1] ? kernel_sendmsg+0x50/0x50 [ 637.112544][ C1] ? do_recvmmsg+0x6d0/0x6d0 [ 637.112547][ C1] ? __lock_acquire+0x164a/0x5780 [ 637.112551][ C1] ___sys_sendmsg+0xf3/0x170 [ 637.112555][ C1] ? sendmsg_copy_msghdr+0x160/0x160 [ 637.112560][ C1] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 637.112564][ C1] ? fs_reclaim_release+0x90/0xd0 [ 637.112568][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.112572][ C1] ? find_held_lock+0x2d/0x110 [ 637.112575][ C1] ? __might_fault+0x11f/0x1d0 [ 637.112579][ C1] ? lock_downgrade+0x830/0x830 [ 637.112583][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.112587][ C1] __sys_sendmmsg+0x195/0x480 [ 637.112591][ C1] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 637.112595][ C1] ? find_held_lock+0x2d/0x110 [ 637.112598][ C1] ? __fd_install+0x1b4/0x600 [ 637.112602][ C1] ? alloc_file_pseudo+0x1/0x250 [ 637.112606][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.112610][ C1] ? __fd_install+0x1e6/0x600 [ 637.112614][ C1] ? __sys_socket+0x16d/0x200 [ 637.112618][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.112622][ C1] ? syscall_enter_from_user_mode+0x1d/0x60 [ 637.112626][ C1] __x64_sys_sendmmsg+0x99/0x100 [ 637.112630][ C1] ? syscall_enter_from_user_mode+0x1d/0x60 [ 637.112634][ C1] do_syscall_64+0x2d/0x70 [ 637.112638][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 637.112642][ C1] RIP: 0033:0x441889 [ 637.112653][ 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 [ 637.112658][ C1] RSP: 002b:00007ffc3ee746e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 637.112667][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441889 [ 637.112673][ C1] RDX: 04924924924924b3 RSI: 0000000020000200 RDI: 0000000000000004 [ 637.112678][ C1] RBP: 00007ffc3ee746f0 R08: 0000000120080522 R09: 0000000120080522 [ 637.112684][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004a2c90 [ 637.112690][ C1] R13: 0000000000402760 R14: 0000000000000000 R15: 0000000000000000 [ 637.112697][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 0.000 msecs [ 637.132460][ T1176] Kernel panic - not syncing: hung_task: blocked tasks [ 637.744155][ T1176] CPU: 0 PID: 1176 Comm: khungtaskd Not tainted 5.9.0-rc8-syzkaller #0 [ 637.752385][ T1176] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 637.762433][ T1176] Call Trace: [ 637.765732][ T1176] dump_stack+0x198/0x1fd [ 637.770139][ T1176] panic+0x382/0x7fb [ 637.774038][ T1176] ? __warn_printk+0xf3/0xf3 [ 637.778632][ T1176] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 637.784263][ T1176] ? preempt_schedule_thunk+0x16/0x18 [ 637.789635][ T1176] ? watchdog.cold+0x5/0x16b [ 637.794221][ T1176] ? watchdog+0xa82/0x1000 [ 637.798641][ T1176] watchdog.cold+0x16/0x16b [ 637.803146][ T1176] ? reset_hung_task_detector+0x30/0x30 [ 637.808691][ T1176] kthread+0x3b5/0x4a0 [ 637.812755][ T1176] ? __kthread_bind_mask+0xc0/0xc0 [ 637.817864][ T1176] ret_from_fork+0x1f/0x30 [ 637.823616][ T1176] Kernel Offset: disabled [ 637.827940][ T1176] Rebooting in 86400 seconds..