Warning: Permanently added '10.128.0.61' (ECDSA) to the list of known hosts. executing program [ 849.873983][ T8428] IPVS: ftp: loaded support on port[0] = 21 [ 849.908791][ T8451] netlink: 32 bytes leftover after parsing attributes in process `syz-executor695'. [ 1002.428295][ T1659] INFO: task syz-executor695:8451 blocked for more than 143 seconds. [ 1002.436572][ T1659] Not tainted 5.11.0-rc6-syzkaller #0 [ 1002.444619][ T1659] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1002.454141][ T1659] task:syz-executor695 state:D stack:25784 pid: 8451 ppid: 8428 flags:0x00004004 [ 1002.464052][ T1659] Call Trace: [ 1002.467338][ T1659] __schedule+0x90c/0x21a0 [ 1002.472778][ T1659] ? io_schedule_timeout+0x140/0x140 [ 1002.478757][ T1659] schedule+0xcf/0x270 [ 1002.482844][ T1659] schedule_preempt_disabled+0xf/0x20 [ 1002.489246][ T1659] __mutex_lock+0x81a/0x1110 [ 1002.493850][ T1659] ? tcf_action_init_1+0x743/0x990 [ 1002.499945][ T1659] ? mutex_lock_io_nested+0xf60/0xf60 [ 1002.505331][ T1659] ? tc_lookup_action_n+0xcd/0xf0 [ 1002.511355][ T1659] ? lock_downgrade+0x6d0/0x6d0 [ 1002.516221][ T1659] ? generic_xdp_install+0x7b0/0x7b0 [ 1002.522475][ T1659] tcf_action_init_1+0x743/0x990 [ 1002.527432][ T1659] ? tcf_action_dump_old+0x80/0x80 [ 1002.533771][ T1659] ? find_held_lock+0x2d/0x110 [ 1002.539241][ T1659] tcf_action_init+0x265/0x4b0 [ 1002.544030][ T1659] ? tcf_action_init_1+0x990/0x990 [ 1002.550229][ T1659] ? lock_chain_count+0x20/0x20 [ 1002.555114][ T1659] ? __lock_acquire+0x16c2/0x54f0 [ 1002.561103][ T1659] tcf_action_add+0xd9/0x360 [ 1002.565713][ T1659] ? tca_action_gd+0xe20/0xe20 [ 1002.572353][ T1659] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 1002.580800][ T1659] ? __nla_parse+0x3d/0x50 [ 1002.585232][ T1659] tc_ctl_action+0x33a/0x440 [ 1002.590995][ T1659] ? tcf_action_add+0x360/0x360 [ 1002.595858][ T1659] ? rtnetlink_rcv_msg+0x3c3/0xad0 [ 1002.601959][ T1659] ? tcf_action_add+0x360/0x360 [ 1002.606826][ T1659] rtnetlink_rcv_msg+0x44e/0xad0 [ 1002.612812][ T1659] ? rtnetlink_put_metrics+0x510/0x510 [ 1002.619061][ T1659] netlink_rcv_skb+0x153/0x420 [ 1002.623839][ T1659] ? rtnetlink_put_metrics+0x510/0x510 [ 1002.630303][ T1659] ? netlink_ack+0xaa0/0xaa0 [ 1002.634901][ T1659] ? netlink_deliver_tap+0x227/0xb70 [ 1002.641156][ T1659] netlink_unicast+0x533/0x7d0 [ 1002.645941][ T1659] ? netlink_attachskb+0x870/0x870 [ 1002.652248][ T1659] ? _copy_from_iter_full+0x275/0x850 [ 1002.657633][ T1659] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 1002.664895][ T1659] ? __phys_addr_symbol+0x2c/0x70 [ 1002.670629][ T1659] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 1002.676361][ T1659] ? __check_object_size+0x171/0x3f0 [ 1002.682602][ T1659] netlink_sendmsg+0x856/0xd90 [ 1002.687383][ T1659] ? netlink_unicast+0x7d0/0x7d0 [ 1002.693449][ T1659] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 1002.701300][ T1659] ? netlink_unicast+0x7d0/0x7d0 [ 1002.706252][ T1659] sock_sendmsg+0xcf/0x120 [ 1002.711808][ T1659] ____sys_sendmsg+0x6e8/0x810 [ 1002.716585][ T1659] ? kernel_sendmsg+0x50/0x50 [ 1002.722408][ T1659] ? do_recvmmsg+0x6c0/0x6c0 [ 1002.727014][ T1659] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 1002.734181][ T1659] ___sys_sendmsg+0xf3/0x170 [ 1002.739455][ T1659] ? sendmsg_copy_msghdr+0x160/0x160 [ 1002.744756][ T1659] ? __fget_files+0x266/0x3d0 [ 1002.750610][ T1659] ? lock_downgrade+0x6d0/0x6d0 [ 1002.755652][ T1659] ? do_huge_pmd_anonymous_page+0x8f1/0x2390 [ 1002.762638][ T1659] ? __fget_files+0x288/0x3d0 [ 1002.767334][ T1659] ? __fget_light+0xea/0x280 [ 1002.773084][ T1659] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 1002.780219][ T1659] __sys_sendmsg+0xe5/0x1b0 [ 1002.784919][ T1659] ? __sys_sendmsg_sock+0xb0/0xb0 [ 1002.791276][ T1659] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 1002.797545][ T1659] ? syscall_enter_from_user_mode+0x1d/0x50 [ 1002.804538][ T1659] do_syscall_64+0x2d/0x70 [ 1002.809688][ T1659] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1002.815601][ T1659] RIP: 0033:0x4468c9 [ 1002.820618][ T1659] RSP: 002b:00007fb9505ee208 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1002.830818][ T1659] RAX: ffffffffffffffda RBX: 00000000004cb428 RCX: 00000000004468c9 [ 1002.839992][ T1659] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 1002.847975][ T1659] RBP: 00000000004cb420 R08: 0000000000000000 R09: 0000000000000000 [ 1002.857016][ T1659] R10: 0000000000000009 R11: 0000000000000246 R12: 00000000004cb42c [ 1002.865661][ T1659] R13: 00007ffec2a1864f R14: 00007fb9505ee300 R15: 0000000000022000 [ 1002.874426][ T1659] [ 1002.874426][ T1659] Showing all locks held in the system: [ 1002.882899][ T1659] 1 lock held by khungtaskd/1659: [ 1002.887925][ T1659] #0: ffffffff8bd73e20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 1002.900161][ T1659] 3 locks held by kworker/1:3/4910: [ 1002.905360][ T1659] #0: ffff8881473d1938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 [ 1002.917308][ T1659] #1: ffffc9000167fda8 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 [ 1002.928377][ T1659] #2: ffffffff8d4596e8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 1002.937811][ T1659] 1 lock held by in:imklog/8152: [ 1002.943710][ T1659] #0: ffff88801bc285f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 1002.953691][ T1659] 1 lock held by syz-executor695/8451: [ 1002.960708][ T1659] #0: ffffffff8d4596e8 (rtnl_mutex){+.+.}-{3:3}, at: tcf_action_init_1+0x743/0x990 [ 1002.971052][ T1659] 1 lock held by syz-executor695/8453: [ 1002.976627][ T1659] [ 1002.979898][ T1659] ============================================= [ 1002.979898][ T1659] [ 1002.989235][ T1659] NMI backtrace for cpu 0 [ 1002.993561][ T1659] CPU: 0 PID: 1659 Comm: khungtaskd Not tainted 5.11.0-rc6-syzkaller #0 [ 1003.001882][ T1659] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1003.011931][ T1659] Call Trace: [ 1003.015204][ T1659] dump_stack+0x107/0x163 [ 1003.019539][ T1659] nmi_cpu_backtrace.cold+0x44/0xd7 [ 1003.024739][ T1659] ? lapic_can_unplug_cpu+0x80/0x80 [ 1003.029945][ T1659] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 1003.035931][ T1659] watchdog+0xd43/0xfa0 [ 1003.040092][ T1659] ? reset_hung_task_detector+0x30/0x30 [ 1003.045643][ T1659] kthread+0x3b1/0x4a0 [ 1003.049711][ T1659] ? __kthread_bind_mask+0xc0/0xc0 [ 1003.054831][ T1659] ret_from_fork+0x1f/0x30 [ 1003.059382][ T1659] Sending NMI from CPU 0 to CPUs 1: [ 1003.065348][ C1] NMI backtrace for cpu 1 [ 1003.065357][ C1] CPU: 1 PID: 8453 Comm: syz-executor695 Not tainted 5.11.0-rc6-syzkaller #0 [ 1003.065365][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1003.065372][ C1] RIP: 0010:lock_acquire+0x161/0x720 [ 1003.065380][ C1] Code: b6 0c 01 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 29 05 00 00 8b 8a 84 09 00 00 85 c9 0f 85 ba 00 00 00 9c 8f 04 24 48 c7 c7 20 ab 4b 89 e8 72 ba a1 07 4c 8b 0c 24 41 89 e8 44 89 [ 1003.065393][ C1] RSP: 0018:ffffc9000161ecb0 EFLAGS: 00000246 [ 1003.065403][ C1] RAX: 0000000000000007 RBX: 1ffff920002c3d98 RCX: 0000000000000000 [ 1003.065410][ C1] RDX: ffff888022600000 RSI: 0000000000000001 RDI: ffff888022600984 [ 1003.065417][ C1] RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8da3904f [ 1003.065423][ C1] R10: fffffbfff1b47209 R11: 0000000000000000 R12: 0000000000000000 [ 1003.065430][ C1] R13: ffff888013d14e68 R14: 0000000000000000 R15: 0000000000000000 [ 1003.065437][ C1] FS: 00007fb9505cd700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 1003.065444][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1003.065450][ C1] CR2: 00005558cea9efd0 CR3: 0000000011b16000 CR4: 0000000000350ee0 [ 1003.065455][ C1] Call Trace: [ 1003.065459][ C1] ? lock_release+0x710/0x710 [ 1003.065463][ C1] __mutex_lock+0x134/0x1110 [ 1003.065467][ C1] ? tcf_idr_check_alloc+0x78/0x3b0 [ 1003.065471][ C1] ? tcf_idr_check_alloc+0x78/0x3b0 [ 1003.065476][ C1] ? mutex_lock_io_nested+0xf60/0xf60 [ 1003.065481][ C1] ? __mutex_unlock_slowpath+0xe2/0x610 [ 1003.065485][ C1] ? wait_for_completion_io+0x260/0x260 [ 1003.065490][ C1] ? __radix_tree_lookup+0x211/0x2a0 [ 1003.065495][ C1] tcf_idr_check_alloc+0x78/0x3b0 [ 1003.065499][ C1] tcf_connmark_init+0x2de/0x910 [ 1003.065503][ C1] ? tcf_connmark_act+0xb40/0xb40 [ 1003.065508][ C1] ? tc_lookup_action_n+0xcd/0xf0 [ 1003.065512][ C1] ? lock_downgrade+0x6d0/0x6d0 [ 1003.065516][ C1] tcf_action_init_1+0x63b/0x990 [ 1003.065521][ C1] ? tcf_action_dump_old+0x80/0x80 [ 1003.065525][ C1] ? lock_chain_count+0x20/0x20 [ 1003.065529][ C1] tcf_action_init+0x265/0x4b0 [ 1003.065533][ C1] ? lock_chain_count+0x20/0x20 [ 1003.065538][ C1] ? tcf_action_init_1+0x990/0x990 [ 1003.065542][ C1] ? lock_chain_count+0x20/0x20 [ 1003.065546][ C1] ? __lock_acquire+0x16c2/0x54f0 [ 1003.065551][ C1] tcf_action_add+0xd9/0x360 [ 1003.065555][ C1] ? tca_action_gd+0xe20/0xe20 [ 1003.065559][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 1003.065564][ C1] ? __nla_parse+0x3d/0x50 [ 1003.065568][ C1] tc_ctl_action+0x33a/0x440 [ 1003.065572][ C1] ? tcf_action_add+0x360/0x360 [ 1003.065576][ C1] ? rtnetlink_rcv_msg+0x3c3/0xad0 [ 1003.065581][ C1] ? tcf_action_add+0x360/0x360 [ 1003.065585][ C1] rtnetlink_rcv_msg+0x44e/0xad0 [ 1003.065589][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 1003.065594][ C1] netlink_rcv_skb+0x153/0x420 [ 1003.065598][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 1003.065603][ C1] ? netlink_ack+0xaa0/0xaa0 [ 1003.065607][ C1] ? netlink_deliver_tap+0x227/0xb70 [ 1003.065611][ C1] netlink_unicast+0x533/0x7d0 [ 1003.065615][ C1] ? netlink_attachskb+0x870/0x870 [ 1003.065620][ C1] ? _copy_from_iter_full+0x275/0x850 [ 1003.065624][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 1003.065629][ C1] ? __phys_addr_symbol+0x2c/0x70 [ 1003.065633][ C1] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 1003.065638][ C1] ? __check_object_size+0x171/0x3f0 [ 1003.065642][ C1] netlink_sendmsg+0x856/0xd90 [ 1003.065646][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 1003.065650][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 1003.065655][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 1003.065659][ C1] sock_sendmsg+0xcf/0x120 [ 1003.065663][ C1] ____sys_sendmsg+0x6e8/0x810 [ 1003.065667][ C1] ? kernel_sendmsg+0x50/0x50 [ 1003.065670][ C1] ? do_recvmmsg+0x6c0/0x6c0 [ 1003.065675][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 1003.065679][ C1] ___sys_sendmsg+0xf3/0x170 [ 1003.065683][ C1] ? sendmsg_copy_msghdr+0x160/0x160 [ 1003.065687][ C1] ? __fget_files+0x266/0x3d0 [ 1003.065691][ C1] ? lock_downgrade+0x6d0/0x6d0 [ 1003.065695][ C1] ? __fget_files+0x288/0x3d0 [ 1003.065699][ C1] ? __fget_light+0xea/0x280 [ 1003.065703][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 1003.065708][ C1] __sys_sendmsg+0xe5/0x1b0 [ 1003.065711][ C1] ? __sys_sendmsg_sock+0xb0/0xb0 [ 1003.065716][ C1] ? __do_sys_futex+0x2a2/0x470 [ 1003.065720][ C1] ? syscall_enter_from_user_mode+0x1d/0x50 [ 1003.065724][ C1] do_syscall_64+0x2d/0x70 [ 1003.065728][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1003.065733][ C1] RIP: 0033:0x4468c9 [ 1003.065740][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 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 bc ff ff ff f7 d8 64 89 01 48 [ 1003.065751][ C1] RSP: 002b:00007fb9505cd208 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1003.065761][ C1] RAX: ffffffffffffffda RBX: 00000000004cb438 RCX: 00000000004468c9 [ 1003.065767][ C1] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000004 [ 1003.065774][ C1] RBP: 00000000004cb430 R08: 0000000000000000 R09: 0000000000000000 [ 1003.065780][ C1] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000004cb43c [ 1003.065786][ C1] R13: 00007ffec2a1864f R14: 00007fb9505cd300 R15: 0000000000022000 [ 1003.078128][ T1659] Kernel panic - not syncing: hung_task: blocked tasks [ 1003.588374][ T1659] CPU: 0 PID: 1659 Comm: khungtaskd Not tainted 5.11.0-rc6-syzkaller #0 [ 1003.596695][ T1659] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1003.607005][ T1659] Call Trace: [ 1003.610281][ T1659] dump_stack+0x107/0x163 [ 1003.614619][ T1659] panic+0x306/0x73d [ 1003.618517][ T1659] ? __warn_printk+0xf3/0xf3 [ 1003.623128][ T1659] ? lapic_can_unplug_cpu+0x80/0x80 [ 1003.628323][ T1659] ? preempt_schedule_thunk+0x16/0x18 [ 1003.633698][ T1659] ? nmi_trigger_cpumask_backtrace+0x196/0x230 [ 1003.639856][ T1659] ? watchdog.cold+0x5/0x158 [ 1003.644451][ T1659] watchdog.cold+0x16/0x158 [ 1003.648957][ T1659] ? reset_hung_task_detector+0x30/0x30 [ 1003.654506][ T1659] kthread+0x3b1/0x4a0 [ 1003.658573][ T1659] ? __kthread_bind_mask+0xc0/0xc0 [ 1003.663686][ T1659] ret_from_fork+0x1f/0x30 [ 1003.671824][ T1659] Kernel Offset: disabled [ 1003.676142][ T1659] Rebooting in 86400 seconds..