Warning: Permanently added '10.128.10.13' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 548.469535][ T8468] IPVS: ftp: loaded support on port[0] = 21 [ 716.137829][ T1661] INFO: task kworker/u4:4:189 blocked for more than 143 seconds. [ 716.145774][ T1661] Not tainted 5.11.0-rc1-syzkaller #0 [ 716.154262][ T1661] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.163783][ T1661] task:kworker/u4:4 state:D stack:24928 pid: 189 ppid: 2 flags:0x00004000 [ 716.173927][ T1661] Workqueue: tc_filter_workqueue tcindex_partial_destroy_work [ 716.182452][ T1661] Call Trace: [ 716.185798][ T1661] __schedule+0x90c/0x21a0 [ 716.191418][ T1661] ? io_schedule_timeout+0x140/0x140 [ 716.196739][ T1661] schedule+0xcf/0x270 [ 716.202086][ T1661] schedule_preempt_disabled+0xf/0x20 [ 716.207475][ T1661] __mutex_lock+0x81a/0x1110 [ 716.213196][ T1661] ? tcindex_partial_destroy_work+0x13/0x50 [ 716.219895][ T1661] ? mutex_lock_io_nested+0xf60/0xf60 [ 716.225305][ T1661] ? lock_release+0x710/0x710 [ 716.231225][ T1661] tcindex_partial_destroy_work+0x13/0x50 [ 716.236978][ T1661] process_one_work+0x98d/0x15f0 [ 716.243253][ T1661] ? pwq_dec_nr_in_flight+0x320/0x320 [ 716.250609][ T1661] ? rwlock_bug.part.0+0x90/0x90 [ 716.255582][ T1661] ? _raw_spin_lock_irq+0x41/0x50 [ 716.261888][ T1661] worker_thread+0x64c/0x1120 [ 716.266604][ T1661] ? process_one_work+0x15f0/0x15f0 [ 716.272973][ T1661] kthread+0x3b1/0x4a0 [ 716.277125][ T1661] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 716.284546][ T1661] ret_from_fork+0x1f/0x30 [ 716.289889][ T1661] [ 716.289889][ T1661] Showing all locks held in the system: [ 716.297607][ T1661] 3 locks held by kworker/u4:4/189: [ 716.304088][ T1661] #0: ffff888014f20138 ((wq_completion)tc_filter_workqueue){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 [ 716.316448][ T1661] #1: ffffc9000132fda8 ((work_completion)(&(rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 [ 716.328746][ T1661] #2: ffffffff8c946728 (rtnl_mutex){+.+.}-{3:3}, at: tcindex_partial_destroy_work+0x13/0x50 [ 716.340924][ T1661] 1 lock held by khungtaskd/1661: [ 716.345969][ T1661] #0: ffffffff8b363860 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 716.357103][ T1661] 1 lock held by in:imklog/8165: [ 716.362800][ T1661] #0: ffff88801276cd70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 716.372781][ T1661] 3 locks held by kworker/0:1/8460: [ 716.379923][ T1661] #0: ffff888021560138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 [ 716.391733][ T1661] #1: ffffc9000157fda8 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 [ 716.402910][ T1661] #2: ffffffff8c946728 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 716.413347][ T1661] 2 locks held by syz-executor022/8490: [ 716.419852][ T1661] [ 716.422288][ T1661] ============================================= [ 716.422288][ T1661] [ 716.431891][ T1661] NMI backtrace for cpu 0 [ 716.436230][ T1661] CPU: 0 PID: 1661 Comm: khungtaskd Not tainted 5.11.0-rc1-syzkaller #0 [ 716.444692][ T1661] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.454854][ T1661] Call Trace: [ 716.458141][ T1661] dump_stack+0x107/0x163 [ 716.462520][ T1661] nmi_cpu_backtrace.cold+0x44/0xd7 [ 716.467734][ T1661] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.473011][ T1661] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 716.479038][ T1661] watchdog+0xd43/0xfa0 [ 716.483248][ T1661] ? reset_hung_task_detector+0x30/0x30 [ 716.488825][ T1661] kthread+0x3b1/0x4a0 [ 716.492899][ T1661] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 716.498812][ T1661] ret_from_fork+0x1f/0x30 [ 716.503438][ T1661] Sending NMI from CPU 0 to CPUs 1: [ 716.510169][ C1] NMI backtrace for cpu 1 [ 716.510177][ C1] CPU: 1 PID: 8490 Comm: syz-executor022 Not tainted 5.11.0-rc1-syzkaller #0 [ 716.510187][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.510196][ C1] RIP: 0010:check_memory_region+0x44/0x180 [ 716.510207][ C1] Code: 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 0f 86 05 01 00 00 49 83 e9 01 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 ca <48> c1 ed 03 49 c1 ea 03 48 01 c5 49 01 c2 48 89 e8 49 8d 5a 01 48 [ 716.510221][ C1] RSP: 0018:ffffc900016be980 EFLAGS: 00000292 [ 716.510232][ C1] RAX: dffffc0000000000 RBX: 1ffff920002d7d36 RCX: ffffffff81588dc8 [ 716.510240][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8cef5788 [ 716.510249][ C1] RBP: ffffffff8cef5788 R08: 0000000000000000 R09: ffffffff8cef578f [ 716.510257][ C1] R10: ffffffff8cef578f R11: 0000000000000000 R12: 0000000000000000 [ 716.510265][ C1] R13: ffff8880151aee68 R14: 0000000000000000 R15: 0000000000000000 [ 716.510273][ C1] FS: 00000000011ab880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 716.510282][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 716.510289][ C1] CR2: 0000000000410800 CR3: 000000002765b000 CR4: 00000000001506e0 [ 716.510297][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 716.510305][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 716.510312][ C1] Call Trace: [ 716.510316][ C1] lock_acquire+0xb8/0x740 [ 716.510321][ C1] ? lock_release+0x710/0x710 [ 716.510326][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 716.510332][ C1] __mutex_lock+0x134/0x1110 [ 716.510337][ C1] ? tcf_idr_check_alloc+0x78/0x3b0 [ 716.510343][ C1] ? tcf_idr_check_alloc+0x78/0x3b0 [ 716.510348][ C1] ? mutex_lock_io_nested+0xf60/0xf60 [ 716.510354][ C1] ? tcf_idr_check_alloc+0x29e/0x3b0 [ 716.510360][ C1] ? __mutex_unlock_slowpath+0xe2/0x610 [ 716.510365][ C1] ? wait_for_completion_io+0x260/0x260 [ 716.510371][ C1] tcf_idr_check_alloc+0x78/0x3b0 [ 716.510376][ C1] tcf_police_init+0x347/0x13a0 [ 716.510381][ C1] ? tcf_police_cleanup+0x60/0x60 [ 716.510386][ C1] ? find_held_lock+0x2d/0x110 [ 716.510391][ C1] ? tc_lookup_action_n+0xcd/0xf0 [ 716.510397][ C1] ? stack_trace_save+0x8c/0xc0 [ 716.510402][ C1] tcf_action_init_1+0x1a3/0x990 [ 716.510407][ C1] ? tcf_action_dump_old+0x80/0x80 [ 716.510412][ C1] ? sock_sendmsg+0xcf/0x120 [ 716.510417][ C1] ? ____sys_sendmsg+0x331/0x810 [ 716.510422][ C1] ? ___sys_sendmsg+0xf3/0x170 [ 716.510427][ C1] ? __sys_sendmmsg+0x195/0x470 [ 716.510432][ C1] ? __x64_sys_sendmmsg+0x99/0x100 [ 716.510438][ C1] ? do_syscall_64+0x2d/0x70 [ 716.510443][ C1] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 716.510449][ C1] ? find_held_lock+0x2d/0x110 [ 716.510454][ C1] tcf_exts_validate+0x138/0x420 [ 716.510459][ C1] ? tcf_exts_destroy+0xc0/0xc0 [ 716.510464][ C1] ? unpoison_range+0x3a/0x60 [ 716.510469][ C1] tcindex_set_parms+0x189/0x20d0 [ 716.510475][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 716.510481][ C1] ? tcindex_alloc_perfect_hash+0x440/0x440 [ 716.510487][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 716.510494][ C1] ? __nla_validate_parse+0x2d3/0x2ae0 [ 716.510499][ C1] ? nla_get_range_signed+0x520/0x520 [ 716.510505][ C1] ? find_held_lock+0x2d/0x110 [ 716.510510][ C1] ? tcindex_change+0x1b7/0x320 [ 716.510515][ C1] tcindex_change+0x212/0x320 [ 716.510520][ C1] ? tcindex_set_parms+0x20d0/0x20d0 [ 716.510526][ C1] tc_new_tfilter+0x1394/0x2120 [ 716.510531][ C1] ? tcindex_set_parms+0x20d0/0x20d0 [ 716.510537][ C1] ? tc_del_tfilter+0x15b0/0x15b0 [ 716.510542][ C1] ? tc_del_tfilter+0x15b0/0x15b0 [ 716.510547][ C1] rtnetlink_rcv_msg+0x80e/0xad0 [ 716.510552][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 716.510558][ C1] netlink_rcv_skb+0x153/0x420 [ 716.510563][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 716.510568][ C1] ? netlink_ack+0xaa0/0xaa0 [ 716.510574][ C1] ? netlink_deliver_tap+0x227/0xb70 [ 716.510579][ C1] netlink_unicast+0x533/0x7d0 [ 716.510584][ C1] ? netlink_attachskb+0x870/0x870 [ 716.510589][ C1] ? _copy_from_iter_full+0x275/0x850 [ 716.510595][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 716.510601][ C1] ? __phys_addr_symbol+0x2c/0x70 [ 716.510607][ C1] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 716.510613][ C1] ? __check_object_size+0x171/0x3f0 [ 716.510618][ C1] netlink_sendmsg+0x856/0xd90 [ 716.510623][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 716.510629][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 716.510634][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 716.510640][ C1] sock_sendmsg+0xcf/0x120 [ 716.510644][ C1] ____sys_sendmsg+0x331/0x810 [ 716.510649][ C1] ? kernel_sendmsg+0x50/0x50 [ 716.510654][ C1] ? do_recvmmsg+0x6c0/0x6c0 [ 716.510659][ C1] ? __lock_acquire+0x16b7/0x5500 [ 716.510664][ C1] ___sys_sendmsg+0xf3/0x170 [ 716.510669][ C1] ? sendmsg_copy_msghdr+0x160/0x160 [ 716.510675][ C1] ? find_held_lock+0x2d/0x110 [ 716.510680][ C1] ? __might_fault+0xd3/0x180 [ 716.510685][ C1] ? lock_downgrade+0x6d0/0x6d0 [ 716.510690][ C1] __sys_sendmmsg+0x195/0x470 [ 716.510694][ C1] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 716.510699][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 716.510704][ C1] ? sockfd_lookup_light+0xc5/0x180 [ 716.510709][ C1] ? __sys_sendmsg+0x10c/0x1b0 [ 716.510713][ C1] ? __sys_sendmsg_sock+0xb0/0xb0 [ 716.510717][ C1] __x64_sys_sendmmsg+0x99/0x100 [ 716.510722][ C1] ? syscall_enter_from_user_mode+0x1d/0x50 [ 716.510727][ C1] do_syscall_64+0x2d/0x70 [ 716.510731][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 716.510736][ C1] RIP: 0033:0x44fe39 [ 716.510744][ 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 [ 716.510758][ C1] RSP: 002b:00007fffb9422638 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 716.510775][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044fe39 [ 716.510781][ C1] RDX: 010efe10675dec16 RSI: 0000000020000200 RDI: 0000000000000003 [ 716.510789][ C1] RBP: 00007fffb9422640 R08: 0000000100000000 R09: 0000000100000000 [ 716.510795][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000085ec6 [ 716.510802][ C1] R13: 0000000000410d10 R14: 0000000000000000 R15: 0000000000000000 [ 716.510810][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.446 msecs [ 716.537678][ T1661] Kernel panic - not syncing: hung_task: blocked tasks [ 717.142262][ T1661] CPU: 0 PID: 1661 Comm: khungtaskd Not tainted 5.11.0-rc1-syzkaller #0 [ 717.150598][ T1661] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 717.160655][ T1661] Call Trace: [ 717.163935][ T1661] dump_stack+0x107/0x163 [ 717.168282][ T1661] panic+0x306/0x73d [ 717.172237][ T1661] ? __warn_printk+0xf3/0xf3 [ 717.176840][ T1661] ? lapic_can_unplug_cpu+0x80/0x80 [ 717.182044][ T1661] ? preempt_schedule_thunk+0x16/0x18 [ 717.187429][ T1661] ? nmi_trigger_cpumask_backtrace+0x196/0x230 [ 717.193597][ T1661] ? watchdog.cold+0x5/0x158 [ 717.198225][ T1661] watchdog.cold+0x16/0x158 [ 717.202745][ T1661] ? reset_hung_task_detector+0x30/0x30 [ 717.208307][ T1661] kthread+0x3b1/0x4a0 [ 717.212382][ T1661] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 717.218282][ T1661] ret_from_fork+0x1f/0x30 [ 717.223534][ T1661] Kernel Offset: disabled [ 717.227861][ T1661] Rebooting in 86400 seconds..