INFO: task syz-executor.4:19021 blocked for more than 140 seconds. Not tainted 5.0.0-rc6+ #70 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'loop3' (00000000604a331c): kobject_uevent_env syz-executor.4 D28032 19021 7759 0x80000006 kobject: 'loop3' (00000000604a331c): fill_kobj_path: path = '/devices/virtual/block/loop3' Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 kobject: 'loop1' (00000000ce2ab626): kobject_uevent_env kobject: 'loop1' (00000000ce2ab626): fill_kobj_path: path = '/devices/virtual/block/loop1' schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_timeout+0x8ca/0xfd0 kernel/time/timer.c:1779 kobject: 'loop4' (0000000099a49922): kobject_uevent_env kobject: 'loop4' (0000000099a49922): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000ad22efd3): kobject_uevent_env kobject: 'loop0' (00000000ad22efd3): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000604a331c): kobject_uevent_env do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x29c/0x440 kernel/sched/completion.c:136 kobject: 'loop3' (00000000604a331c): fill_kobj_path: path = '/devices/virtual/block/loop3' crypto_wait_req include/linux/crypto.h:688 [inline] crypto_wait_req include/linux/crypto.h:683 [inline] tls_sw_free_resources_tx+0x3c2/0xa30 net/tls/tls_sw.c:1973 kobject: 'loop2' (00000000359e025e): kobject_uevent_env tls_sk_proto_close+0x67b/0x750 net/tls/tls_main.c:284 kobject: 'loop2' (00000000359e025e): fill_kobj_path: path = '/devices/virtual/block/loop2' inet_release+0x105/0x1f0 net/ipv4/af_inet.c:428 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:473 __sock_release+0xd3/0x250 net/socket.c:579 sock_close+0x1b/0x30 net/socket.c:1161 __fput+0x2df/0x8d0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x92c/0x2fd0 kernel/exit.c:875 base_sock_release(00000000f17aed09) sk=0000000069c01efd base_sock_release(000000001a33093c) sk=0000000028c3ec4b do_group_exit+0x135/0x370 kernel/exit.c:979 get_signal+0x399/0x1d50 kernel/signal.c:2575 do_signal+0x87/0x1940 arch/x86/kernel/signal.c:816 kobject: 'loop2' (00000000359e025e): kobject_uevent_env kobject: 'loop2' (00000000359e025e): fill_kobj_path: path = '/devices/virtual/block/loop2' exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411d31 Code: be b3 34 01 00 00 31 c0 bf bb 36 44 00 e8 17 f3 00 00 8b b3 30 01 00 00 31 c0 bf d0 36 44 00 e8 05 f3 00 00 8b b3 08 01 00 00 <31> c0 bf e4 36 44 00 e8 f3 f2 00 00 8b 83 e0 00 00 00 48 89 ee bf RSP: 002b:00007ffc3a837b20 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411d31 RDX: 0000000000000001 RSI: 00000000007405b0 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00000000000e9dc2 R09: 00000000000e9dc2 R10: 00007ffc3a837a50 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000567 R15: 0000000000000004 Showing all locks held in the system: 2 locks held by kworker/u4:4/850: #0: 00000000126ce9e5 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1149 [inline] #0: 00000000126ce9e5 (&rq->lock){-.-.}, at: __schedule+0x1fc/0x1cc0 kernel/sched/core.c:3423 #1: 00000000ad8daa0d (rcu_read_lock){....}, at: __update_idle_core+0x45/0x3f0 kernel/sched/fair.c:6014 1 lock held by khungtaskd/1042: #0: 00000000ad8daa0d (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4389 1 lock held by rsyslogd/7620: #0: 00000000fd44810e (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:795 2 locks held by getty/7710: #0: 00000000af4722f0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000ff46d70a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7711: #0: 00000000cced4b1f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000ab74b063 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7712: #0: 000000001336aa01 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000007133dddf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 kobject: 'loop5' (0000000094a01bdf): kobject_uevent_env kobject: 'loop5' (0000000094a01bdf): fill_kobj_path: path = '/devices/virtual/block/loop5' 2 locks held by getty/7713: #0: 0000000022dcad6a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000c031459f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7714: kobject: 'loop3' (00000000604a331c): kobject_uevent_env kobject: 'loop3' (00000000604a331c): fill_kobj_path: path = '/devices/virtual/block/loop3' #0: 00000000963a4408 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 kobject: 'loop0' (00000000ad22efd3): kobject_uevent_env #1: 000000004e63e2eb (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 kobject: 'loop0' (00000000ad22efd3): fill_kobj_path: path = '/devices/virtual/block/loop0' 2 locks held by getty/7715: #0: 00000000ef633e88 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 kobject: 'loop2' (00000000359e025e): kobject_uevent_env #1: 0000000009ce854f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 kobject: 'loop2' (00000000359e025e): fill_kobj_path: path = '/devices/virtual/block/loop2' 2 locks held by getty/7716: #0: 00000000794afa41 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 kobject: 'loop1' (00000000ce2ab626): kobject_uevent_env sctp: [Deprecated]: syz-executor.5 (pid 25932) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead kobject: 'loop1' (00000000ce2ab626): fill_kobj_path: path = '/devices/virtual/block/loop1' #1: 0000000069256441 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 kobject: 'loop4' (0000000099a49922): kobject_uevent_env 1 lock held by syz-executor.1/7750: 2 locks held by kworker/0:3/7757: kobject: 'loop4' (0000000099a49922): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000ce2ab626): kobject_uevent_env kobject: 'loop1' (00000000ce2ab626): fill_kobj_path: path = '/devices/virtual/block/loop1' #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2144 kobject: 'loop3' (00000000604a331c): kobject_uevent_env #1: 0000000003a4313c ((work_completion)(&map->work)){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2148 kobject: 'loop3' (00000000604a331c): fill_kobj_path: path = '/devices/virtual/block/loop3' 2 locks held by kworker/1:3/7761: #0: 00000000e0e40e3f ((wq_completion)"rcu_gp"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000e0e40e3f ((wq_completion)"rcu_gp"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000e0e40e3f ((wq_completion)"rcu_gp"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000e0e40e3f ((wq_completion)"rcu_gp"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000e0e40e3f ((wq_completion)"rcu_gp"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000e0e40e3f ((wq_completion)"rcu_gp"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000e0e40e3f ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2144 #1: 00000000a5d400f2 ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2148 2 locks held by kworker/0:0/15209: #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000bb9cfc9c ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2144 #1: 0000000027f0001f ((work_completion)(&map->work)){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2148 kobject: 'loop0' (00000000ad22efd3): kobject_uevent_env kobject: 'loop0' (00000000ad22efd3): fill_kobj_path: path = '/devices/virtual/block/loop0' 2 locks held by syz-executor.4/19021: #0: 00000000dcd21e70 (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:757 [inline] #0: 00000000dcd21e70 (&sb->s_type->i_mutex_key#11){+.+.}, at: __sock_release+0x89/0x250 net/socket.c:578 #1: 00000000261b2b22 (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1507 [inline] #1: 00000000261b2b22 (sk_lock-AF_INET6){+.+.}, at: tls_sk_proto_close+0xd6/0x750 net/tls/tls_main.c:266 1 lock held by syz-executor.2/25928: 2 locks held by syz-executor.4/25935: #0: 00000000cee232fc (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 #1: 0000000088c216fd (rcu_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline] #1: 0000000088c216fd (rcu_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited.constprop.0+0x42a/0x530 kernel/rcu/tree_exp.h:622 kobject: 'loop1' (00000000ce2ab626): kobject_uevent_env kobject: 'loop1' (00000000ce2ab626): fill_kobj_path: path = '/devices/virtual/block/loop1' 2 locks held by syz-executor.4/25947: kobject: 'loop0' (00000000ad22efd3): kobject_uevent_env #0: 00000000f55e64d4 (br_ioctl_mutex){+.+.}, at: sock_ioctl+0x2c9/0x610 net/socket.c:1060 kobject: 'loop0' (00000000ad22efd3): fill_kobj_path: path = '/devices/virtual/block/loop0' #1: 00000000cee232fc (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 1 lock held by syz-executor.4/25949: #0: 00000000cee232fc (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 1 lock held by syz-executor.4/25951: #0: 00000000cee232fc (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 1 lock held by syz-executor.4/25956: #0: 00000000cee232fc (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 sctp: [Deprecated]: syz-executor.5 (pid 25938) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead kobject: 'loop2' (00000000359e025e): kobject_uevent_env kobject: 'loop2' (00000000359e025e): fill_kobj_path: path = '/devices/virtual/block/loop2' 1 lock held by syz-executor.3/25954: #0: 00000000cee232fc (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 1 lock held by syz-executor.1/25979: 1 lock held by syz-executor.0/25981: #0: 00000000126ce9e5 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1149 [inline] #0: 00000000126ce9e5 (&rq->lock){-.-.}, at: __schedule+0x1fc/0x1cc0 kernel/sched/core.c:3423 1 lock held by syz-executor.2/25983: kobject: 'loop5' (0000000094a01bdf): kobject_uevent_env #0: 00000000cee232fc (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 kobject: 'loop5' (0000000094a01bdf): fill_kobj_path: path = '/devices/virtual/block/loop5' bridge0: port 2(bridge_slave_1) entered disabled state ============================================= bridge0: port 1(bridge_slave_0) entered disabled state NMI backtrace for cpu 0 CPU: 0 PID: 1042 Comm: khungtaskd Not tainted 5.0.0-rc6+ #70 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 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:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x9df/0xee0 kernel/hung_task.c:287 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 7846 Comm: kworker/u4:5 Not tainted 5.0.0-rc6+ #70 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:rcu_is_watching+0x1a/0x30 kernel/rcu/tree.c:933 Code: 8c 37 49 00 48 8b 45 e8 eb 8e 66 0f 1f 44 00 00 55 48 89 e5 65 ff 05 15 d1 a3 7e e8 40 ff ff ff 83 f0 01 65 ff 0d 06 d1 a3 7e <74> 02 5d c3 e8 ee 49 a2 ff 5d c3 90 66 2e 0f 1f 84 00 00 00 00 00 RSP: 0018:ffff8880687c7cd0 EFLAGS: 00000286 RAX: 0000000000000001 RBX: ffff88809e703480 RCX: ffffffff815e1c54 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880ae92de78 RBP: ffff8880687c7cd0 R08: 1ffff11015d25bcf R09: ffffed1015d25bd0 R10: ffffed1015d25bcf R11: ffff8880ae92de7b R12: 0000000000000000 R13: 00000000000002c8 R14: ffff88806abd2a80 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000047007d CR3: 00000000a8954000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock include/linux/rcupdate.h:608 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:419 [inline] batadv_nc_worker+0x4cd/0x760 net/batman-adv/network-coding.c:730 process_one_work+0x98e/0x1790 kernel/workqueue.c:2173 worker_thread+0x98/0xe40 kernel/workqueue.c:2319 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 kobject: 'loop0' (00000000ad22efd3): kobject_uevent_env kobject: 'loop0' (00000000ad22efd3): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000ce2ab626): kobject_uevent_env kobject: 'loop1' (00000000ce2ab626): fill_kobj_path: path = '/devices/virtual/block/loop1'