IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 INFO: task kworker/u4:5:7437 blocked for more than 140 seconds. Not tainted 4.14.114 #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:5 D24768 7437 2 0x80000000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:2807 [inline] __schedule+0x7be/0x1cf0 kernel/sched/core.c:3383 schedule+0x92/0x1c0 kernel/sched/core.c:3427 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3485 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 cleanup_net+0x11c/0x880 net/core/net_namespace.c:450 process_one_work+0x868/0x1610 kernel/workqueue.c:2114 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248 kthread+0x31c/0x430 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 Showing all locks held in the system: 1 lock held by khungtaskd/1007: kobject: 'lo' (ffff88808b285370): kobject_add_internal: parent: 'net', set: 'devices' #0: (tasklist_lock){.+.?}, at: [] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4541 2 locks held by getty/7026: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/7027: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/7028: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/7029: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/7030: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/7031: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 2 locks held by getty/7032: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 drivers/tty/n_tty.c:2156 3 locks held by kworker/u4:5/7437: #0: ("%s""netns"){+.+.}, at: [] work_static include/linux/workqueue.h:199 [inline] #0: ("%s""netns"){+.+.}, at: [] set_work_data kernel/workqueue.c:619 [inline] #0: ("%s""netns"){+.+.}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ("%s""netns"){+.+.}, at: [] process_one_work+0x76e/0x1610 kernel/workqueue.c:2085 #1: (net_cleanup_work){+.+.}, at: [] process_one_work+0x7ab/0x1610 kernel/workqueue.c:2089 #2: (net_mutex){+.+.}, at: [] cleanup_net+0x11c/0x880 net/core/net_namespace.c:450 1 lock held by syz-executor.5/7798: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/7819: kobject: 'lo' (ffff88808b285370): kobject_uevent_env #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/7906: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/8017: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/8241: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/8244: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/8261: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/8268: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/8300: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/8497: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 kobject: 'lo' (ffff88808b285370): fill_kobj_path: path = '/devices/virtual/net/lo' 1 lock held by syz-executor.5/8548: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/8576: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/8881: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/8975: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/9149: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/9461: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/9810: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/9849: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/9892: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/9944: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/9960: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/10027: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/10070: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/10103: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 kobject: 'queues' (ffff88802fcde948): kobject_add_internal: parent: 'lo', set: '' 1 lock held by syz-executor.5/10243: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/10449: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/10481: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/10988: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/11078: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/11157: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/11170: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/11204: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 kobject: 'queues' (ffff88802fcde948): kobject_uevent_env 1 lock held by syz-executor.5/11237: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/11265: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/11407: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/11556: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/11717: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/11817: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12075: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12101: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12157: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12303: kobject: 'queues' (ffff88802fcde948): kobject_uevent_env: filter function caused the event to drop! #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12324: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12416: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12449: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12459: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12463: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12500: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12536: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12556: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/12606: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/13005: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/13015: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/13114: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/13199: kobject: 'rx-0' (ffff888027b62e50): kobject_add_internal: parent: 'queues', set: 'queues' #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/13227: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/13255: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/13311: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/13364: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/13418: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/13419: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/13756: kobject: 'rx-0' (ffff888027b62e50): kobject_uevent_env #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 kobject: 'rx-0' (ffff888027b62e50): fill_kobj_path: path = '/devices/virtual/net/lo/queues/rx-0' 1 lock held by syz-executor.5/13819: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/14174: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/14241: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/14255: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 kobject: 'tx-0' (ffff88803a7e5318): kobject_add_internal: parent: 'queues', set: 'queues' 1 lock held by syz-executor.5/14309: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/14497: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/14671: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/15257: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/15409: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/15536: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/15689: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/15739: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/15800: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/15951: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/16056: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 kobject: 'tx-0' (ffff88803a7e5318): kobject_uevent_env 1 lock held by syz-executor.5/16072: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 kobject: 'tx-0' (ffff88803a7e5318): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0' 1 lock held by syz-executor.5/16076: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 kobject: 'tunl0' (ffff88804c905170): kobject_add_internal: parent: 'net', set: 'devices' 1 lock held by syz-executor.5/16088: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 kobject: 'tunl0' (ffff88804c905170): kobject_uevent_env 1 lock held by syz-executor.5/16494: kobject: 'tunl0' (ffff88804c905170): fill_kobj_path: path = '/devices/virtual/net/tunl0' #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/16619: kobject: 'queues' (ffff88802fcde548): kobject_add_internal: parent: 'tunl0', set: '' #0: kobject: 'queues' (ffff88802fcde548): kobject_uevent_env (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/16695: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/16747: #0: kobject: 'queues' (ffff88802fcde548): kobject_uevent_env: filter function caused the event to drop! (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/16763: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/16793: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 kobject: 'rx-0' (ffff888027b62c10): kobject_add_internal: parent: 'queues', set: 'queues' 1 lock held by syz-executor.5/16798: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/16915: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/17053: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/17406: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/17544: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/17870: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/17936: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18000: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18119: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18126: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18265: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18315: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18334: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18397: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18573: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18621: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18678: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18772: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18773: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18806: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18820: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18846: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18847: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18875: kobject: 'rx-0' (ffff888027b62c10): kobject_uevent_env #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 kobject: 'rx-0' (ffff888027b62c10): fill_kobj_path: path = '/devices/virtual/net/tunl0/queues/rx-0' 1 lock held by syz-executor.5/18941: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18962: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/18963: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/19107: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/19159: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/19210: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/19237: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/19291: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/19572: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/19744: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/19975: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/20023: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/20065: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/20280: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/20305: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/20325: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/20355: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/20429: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/20453: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/22090: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/22164: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/22178: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/22277: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/22456: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/22496: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/22527: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/23151: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/23597: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/23964: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/24109: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/24671: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/24852: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/24908: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/24918: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/25079: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/25269: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/25958: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.5/26591: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 2 locks held by syz-executor.5/9104: #0: (cpu_hotplug_lock.rw_sem){++++}, at: [] get_online_cpus include/linux/cpu.h:138 [inline] #0: (cpu_hotplug_lock.rw_sem){++++}, at: [] lru_add_drain_all+0xe/0x20 mm/swap.c:729 #1: (lock#5){+.+.}, at: [] lru_add_drain_all_cpuslocked+0x70/0x450 mm/swap.c:704 1 lock held by syz-executor.4/9742: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/9748: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.3/9759: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x15a/0x440 net/core/net_namespace.c:410 ============================================= kobject: 'tx-0' (ffff888053562298): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (ffff888053562298): kobject_uevent_env kobject: 'tx-0' (ffff888053562298): fill_kobj_path: path = '/devices/virtual/net/tunl0/queues/tx-0' kobject: 'gre0' (ffff888087da0eb0): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'gre0' (ffff888087da0eb0): kobject_uevent_env kobject: 'gre0' (ffff888087da0eb0): fill_kobj_path: path = '/devices/virtual/net/gre0' kobject: 'queues' (ffff88802fcde248): kobject_add_internal: parent: 'gre0', set: '' kobject: 'queues' (ffff88802fcde248): kobject_uevent_env kobject: 'queues' (ffff88802fcde248): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (ffff888027b629d0): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (ffff888027b629d0): kobject_uevent_env NMI backtrace for cpu 1 CPU: 1 PID: 1007 Comm: khungtaskd Not tainted 4.14.114 #4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x19c lib/dump_stack.c:53 nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x141/0x189 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5e7/0xb90 kernel/hung_task.c:274 kthread+0x31c/0x430 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 Sending NMI from CPU 1 to CPUs 0: kobject: 'rx-0' (ffff888027b629d0): fill_kobj_path: path = '/devices/virtual/net/gre0/queues/rx-0' NMI backtrace for cpu 0 CPU: 0 PID: 17928 Comm: syz-executor.5 Not tainted 4.14.114 #4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8881ff6b6240 task.stack: ffff8881ff6b8000 RIP: 0010:io_serial_out+0x73/0x90 drivers/tty/serial/8250/8250_port.c:457 RSP: 0018:ffff8881ff6bf328 EFLAGS: 00000006 RAX: 0000000000000000 RBX: 00000000000003f9 RCX: 0000000000000000 RDX: 00000000000003f9 RSI: 0000000000000001 RDI: ffffffff89b71438 RBP: ffff8881ff6bf340 R08: 000000000000352f R09: ffffffff88c93d78 R10: ffff8881ff6b6b60 R11: ffff8881ff6b6240 R12: ffffffff89b71400 R13: 0000000000000000 R14: ffffffff89b71448 R15: ffff8881ff6bf408 FS: 00007f0b5248c700(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001ff63d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: serial_port_out include/linux/serial_core.h:265 [inline] serial8250_console_write+0x2ea/0x950 drivers/tty/serial/8250/8250_port.c:3242 univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:597 call_console_drivers kernel/printk/printk.c:1719 [inline] console_unlock+0x9c1/0xed0 kernel/printk/printk.c:2391 vprintk_emit kernel/printk/printk.c:1917 [inline] vprintk_emit+0x1f9/0x600 kernel/printk/printk.c:1882 vprintk_default+0x28/0x30 kernel/printk/printk.c:1957 vprintk_func+0x5d/0x159 kernel/printk/printk_safe.c:401 printk+0x9e/0xbc kernel/printk/printk.c:1990 fill_kobj_path lib/kobject.c:134 [inline] kobject_get_path.cold+0x38/0x47 lib/kobject.c:157 kobject_uevent_env+0x31e/0xc41 lib/kobject_uevent.c:395 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:550 rx_queue_add_kobject net/core/net-sysfs.c:930 [inline] net_rx_queue_update_kobjects+0x119/0x400 net/core/net-sysfs.c:948 register_queue_kobjects net/core/net-sysfs.c:1392 [inline] netdev_register_kobject+0x271/0x3a0 net/core/net-sysfs.c:1603 register_netdevice+0x81c/0xca0 net/core/dev.c:7665 __ip_tunnel_create+0x310/0x450 net/ipv4/ip_tunnel.c:282 ip_tunnel_init_net+0x272/0x520 net/ipv4/ip_tunnel.c:1033 ipgre_init_net+0x25/0x30 net/ipv4/ip_gre.c:1016 ops_init+0xac/0x3d0 net/core/net_namespace.c:118 setup_net+0x237/0x530 net/core/net_namespace.c:295 copy_net_ns+0x19f/0x440 net/core/net_namespace.c:419 create_new_namespaces+0x37b/0x720 kernel/nsproxy.c:107 copy_namespaces+0x284/0x310 kernel/nsproxy.c:165 copy_process.part.0+0x25f7/0x6950 kernel/fork.c:1758 copy_process kernel/fork.c:1570 [inline] _do_fork+0x19e/0xce0 kernel/fork.c:2058 SYSC_clone kernel/fork.c:2168 [inline] SyS_clone+0x37/0x50 kernel/fork.c:2162 do_syscall_64+0x1eb/0x630 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x20000b50 RSP: 002b:00007f0b5248bbd8 EFLAGS: 00000212 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 0000000020000b50 RDX: 4f34791c8631dbf7 RSI: 0000000000000000 RDI: 00007f0b5248d011 RBP: 0000000000000008 R08: 0000000000000005 R09: 0000000000000006 R10: 0000000000000007 R11: 0000000000000212 R12: 000000000000000b R13: 000000000000000c R14: 000000000000000d R15: 00000000ffffffff Code: 00 00 49 8d 7c 24 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e3 80 3c 02 00 75 19 41 03 5c 24 38 44 89 e8 89 da ee <5b> 41 5c 41 5d 5d c3 e8 f1 10 6f fe eb c0 e8 4a 11 6f fe eb e0 kobject: 'tx-0' (ffff888032087c98): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (ffff888032087c98): kobject_uevent_env kobject: 'tx-0' (ffff888032087c98): fill_kobj_path: path = '/devices/virtual/net/gre0/queues/tx-0'