Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 313625 pages reserved INFO: task init:20325 blocked for more than 140 seconds. Not tainted 4.9.202+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. init D28984 20325 1 0x00000000 0000000000000087 ffff8801d7acdf00 ffff8801ce50cd00 ffff8801db61ffc0 ffff8801d1e8df00 ffff8801db61ffd8 ffff8801af267758 ffffffff8280a1de ffff8801af267698 ffffffff81249731 00ff8801d7acdf00 ffff8801db6208b0 Call Trace: [<00000000a92b6cec>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<000000006c7168fc>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3579 [<000000003b05a387>] __mutex_lock_common kernel/locking/mutex.c:582 [inline] [<000000003b05a387>] mutex_lock_nested+0x38d/0x920 kernel/locking/mutex.c:621 [<00000000b20e5bcc>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] [<00000000b20e5bcc>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 [<000000003a623597>] chrdev_open+0x230/0x630 fs/char_dev.c:398 [<00000000b84253a8>] do_dentry_open+0x422/0xd20 fs/open.c:791 [<000000005d49945d>] vfs_open+0x105/0x230 fs/open.c:904 [<00000000cfd085cd>] do_last fs/namei.c:3457 [inline] [<00000000cfd085cd>] path_openat+0xbf5/0x2f60 fs/namei.c:3581 [<0000000039966b39>] do_filp_open+0x1a1/0x280 fs/namei.c:3615 [<0000000020d35c1f>] do_sys_open+0x2f0/0x610 fs/open.c:1097 [<00000000465083f3>] SYSC_open fs/open.c:1115 [inline] [<00000000465083f3>] SyS_open+0x2d/0x40 fs/open.c:1110 [<00000000baa3895f>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<000000004bf25d87>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Showing all locks held in the system: 2 locks held by khungtaskd/24: #0: (rcu_read_lock){......}, at: [<00000000a9d82670>] check_hung_uninterruptible_tasks kernel/hung_task.c:169 [inline] #0: (rcu_read_lock){......}, at: [<00000000a9d82670>] watchdog+0x14b/0xaf0 kernel/hung_task.c:263 #1: (tasklist_lock){.+.+..}, at: [<00000000b3c65a95>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4339 1 lock held by rsyslogd/1913: #0: (&f->f_pos_lock){+.+.+.}, at: [<00000000aab8e17b>] __fdget_pos+0xa8/0xd0 fs/file.c:782 2 locks held by getty/2041: #0: (&tty->ldisc_sem){++++++}, at: [<00000000c83cf65f>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.+.}, at: [<00000000ae9a67b3>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156 2 locks held by kworker/u4:5/2147: #0: ("events_unbound"){.+.+.+}, at: [<00000000f7a302ac>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: ((&sub_info->work)){+.+.+.}, at: [<0000000014603150>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 2 locks held by kworker/u4:9/3711: #0: ("events_unbound"){.+.+.+}, at: [<00000000f7a302ac>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: ((&sub_info->work)){+.+.+.}, at: [<0000000014603150>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 2 locks held by kworker/u4:11/3724: #0: ("events_unbound"){.+.+.+}, at: [<00000000f7a302ac>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: ((&sub_info->work)){+.+.+.}, at: [<0000000014603150>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 2 locks held by kworker/u4:15/5439: #0: ("events_unbound"){.+.+.+}, at: [<00000000f7a302ac>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: ((&sub_info->work)){+.+.+.}, at: [<0000000014603150>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 2 locks held by kworker/u4:16/5442: #0: ("events_unbound"){.+.+.+}, at: [<00000000f7a302ac>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: ((&sub_info->work)){+.+.+.}, at: [<0000000014603150>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 2 locks held by udevd/11549: #0: (sb_writers#6){.+.+.+}, at: [<00000000cf9e4094>] sb_start_write include/linux/fs.h:1578 [inline] #0: (sb_writers#6){.+.+.+}, at: [<00000000cf9e4094>] mnt_want_write+0x3f/0xb0 fs/namespace.c:391 #1: (&type->i_mutex_dir_key#4/1){+.+.+.}, at: [<00000000b1dca359>] inode_lock_nested include/linux/fs.h:806 [inline] #1: (&type->i_mutex_dir_key#4/1){+.+.+.}, at: [<00000000b1dca359>] lock_rename+0x236/0x290 fs/namei.c:2898 2 locks held by kworker/u4:17/12699: #0: ("events_unbound"){.+.+.+}, at: [<00000000f7a302ac>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: ((&sub_info->work)){+.+.+.}, at: [<0000000014603150>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 2 locks held by kworker/u4:28/12736: #0: ("events_unbound"){.+.+.+}, at: [<00000000f7a302ac>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: ((&sub_info->work)){+.+.+.}, at: [<0000000014603150>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 1 lock held by init/20325: #0: (tty_mutex){+.+.+.}, at: [<00000000b20e5bcc>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000b20e5bcc>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/20331: #0: (tty_mutex){+.+.+.}, at: [<00000000b20e5bcc>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000b20e5bcc>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/20394: #0: (tty_mutex){+.+.+.}, at: [<00000000b20e5bcc>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000b20e5bcc>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/20658: #0: (tty_mutex){+.+.+.}, at: [<00000000b20e5bcc>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000b20e5bcc>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/20663: #0: (tty_mutex){+.+.+.}, at: [<00000000b20e5bcc>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000b20e5bcc>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 2 locks held by kworker/u4:3/23627: #0: ("events_unbound"){.+.+.+}, at: [<00000000f7a302ac>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: ((&sub_info->work)){+.+.+.}, at: [<0000000014603150>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.202+ #0 ffff8801d98d7cc8 ffffffff81b55d2b 0000000000000001 0000000000000000 0000000000000001 ffffffff8109a001 dffffc0000000000 ffff8801d98d7d00 ffffffff81b60fcc 0000000000000001 0000000000000000 0000000000000001 Call Trace: [<00000000d65a7e9c>] __dump_stack lib/dump_stack.c:15 [inline] [<00000000d65a7e9c>] dump_stack+0xcb/0x130 lib/dump_stack.c:56 [<00000000fd0dc6e0>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99 [<000000006dabc10d>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60 [<000000006888e892>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [<00000000f654cad7>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [<00000000f654cad7>] check_hung_task kernel/hung_task.c:126 [inline] [<00000000f654cad7>] check_hung_uninterruptible_tasks kernel/hung_task.c:183 [inline] [<00000000f654cad7>] watchdog+0x670/0xaf0 kernel/hung_task.c:263 [<000000000950066a>] kthread+0x278/0x310 kernel/kthread.c:211 [<000000004a29e865>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 27661 Comm: syz-executor.2 Not tainted 4.9.202+ #0 task: 00000000e26f81ac task.stack: 00000000435b5685 RIP: 0010:[] c [<000000002589a521>] __sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:96 RSP: 0018:ffff88019f02f830 EFLAGS: 00000082 RAX: 0000000000040000 RBX: ffff88019eb740a0 RCX: ffffc900006d8000 RDX: 000000000003f1de RSI: ffffffff82a95680 RDI: ffffffff82b44840 RBP: ffff88019f02f830 R08: 1ffffffff067c829 R09: ffff8801d3f35a80 R10: ffff8801d3f35ac0 R11: 0000000000000000 R12: ffffffff82a95680 R13: ffffffff82a95680 R14: ffffffff82b44840 R15: ffff88019f02f948 FS: 00007fca7f781700(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200b2000 CR3: 00000001d0e8e000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Stack: ffff88019f02f870c ffffffff81bbc36cc ffffffff81bbc38cc ffff88019eb740a0c ffffffff82a95680c dffffc0000000000c ffff88019eb740a0c ffff88019f02f948c ffff88019f02f888c ffffffff81bbc58dc ffff88019eb72f80c ffff88019f02f970c Call Trace: [<000000002e8a92c3>] check_preemption_disabled+0x1c/0x200 lib/smp_processor_id.c:13 [<00000000031640c2>] __this_cpu_preempt_check+0x1d/0x30 lib/smp_processor_id.c:62 [<000000005deb5368>] __perf_event_task_sched_in+0x14e/0x4a0 kernel/events/core.c:3197 [<00000000b054fdbc>] perf_event_task_sched_in include/linux/perf_event.h:1086 [inline] [<00000000b054fdbc>] finish_task_switch+0x21c/0x660 kernel/sched/core.c:2812 [<000000003597c5cc>] context_switch kernel/sched/core.c:2946 [inline] [<000000003597c5cc>] __schedule+0x6d6/0x1f10 kernel/sched/core.c:3491 [<00000000f82f75bf>] preempt_schedule_common+0x4f/0xe0 kernel/sched/core.c:3601 [<0000000082dac8cd>] preempt_schedule+0x26/0x30 kernel/sched/core.c:3627 [<00000000c6b803ec>] ___preempt_schedule+0x16/0x18 [<0000000035bb9d99>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:163 [inline] [<0000000035bb9d99>] _raw_spin_unlock_irqrestore+0x6b/0x70 kernel/locking/spinlock.c:191 [<00000000e4d3cd5a>] spin_unlock_irqrestore include/linux/spinlock.h:362 [inline] [<00000000e4d3cd5a>] __wake_up+0x3f/0x50 kernel/sched/wait.c:96 [<00000000a84fc53d>] wakeup_pipe_writers+0x59/0x90 fs/splice.c:478 [<000000000a2ff91e>] splice_from_pipe_next.part.0+0x1ba/0x290 fs/splice.c:581 [<00000000513338d8>] splice_from_pipe_next fs/splice.c:564 [inline] [<00000000513338d8>] __splice_from_pipe+0xf9/0x790 fs/splice.c:643 [<0000000047faacd4>] vmsplice_to_user+0x1bd/0x1e0 fs/splice.c:1291 [<00000000a9c0ebd1>] SYSC_vmsplice fs/splice.c:1370 [inline] [<00000000a9c0ebd1>] SyS_vmsplice+0x114/0x140 fs/splice.c:1353 [<00000000baa3895f>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<000000004bf25d87>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: c89 cdf ce8 cf0 cc0 c1d c00 ce9 c9a cfe cff cff c4c c89 cef ce8 ce3 cc0 c1d c00 ce9 c1e cfe cff cff c66 c2e c0f c1f c84 c00 c00 c00 c00 c00 c0f c1f c40 c00 c55 c48 c89 ce5 c<48> c8b c75 c08 c65 c48 c8b c04 c25 c00 c7e c01 c00 c65 c8b c15 c88 c57 ccf c7e c81 c