loop4: p251 start 1854537728 is beyond EOD, truncated loop4: p252 start 1854537728 is beyond EOD, truncated loop4: p253 start 1854537728 is beyond EOD, truncated loop4: p254 start 1854537728 is beyond EOD, truncated loop4: p255 start 1854537728 is beyond EOD, truncated INFO: task init:15111 blocked for more than 140 seconds. Not tainted 4.9.194+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. init D28584 15111 1 0x00000000 0000000000000087 ffff880193b4af80 0000000000000000 ffff8801db721000 ffff8801da6b2f80 ffff8801db721018 ffff8801aa4ff758 ffffffff8281af8e ffff880193b4b848 ffff880193b4b820 00ff880193b4b850 ffff8801db7218f0 Call Trace: [<00000000f5376ade>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<0000000028077fb9>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3579 [<0000000014e74f0b>] __mutex_lock_common kernel/locking/mutex.c:582 [inline] [<0000000014e74f0b>] mutex_lock_nested+0x38d/0x920 kernel/locking/mutex.c:621 [<0000000038fa0e89>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] [<0000000038fa0e89>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 [<00000000be6314f9>] chrdev_open+0x230/0x630 fs/char_dev.c:398 [<00000000b72f1a89>] do_dentry_open+0x422/0xd20 fs/open.c:791 [<0000000079b1ed2e>] vfs_open+0x105/0x230 fs/open.c:904 [<00000000adc0aeda>] do_last fs/namei.c:3541 [inline] [<00000000adc0aeda>] path_openat+0xbf5/0x2f60 fs/namei.c:3665 [<0000000079c78610>] do_filp_open+0x1a1/0x280 fs/namei.c:3699 [<0000000091a6ea4e>] do_sys_open+0x2f0/0x610 fs/open.c:1097 [<00000000e8cfee43>] SYSC_open fs/open.c:1115 [inline] [<00000000e8cfee43>] SyS_open+0x2d/0x40 fs/open.c:1110 [<00000000d472683e>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000042e03138>] 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: [<000000000014de4a>] check_hung_uninterruptible_tasks kernel/hung_task.c:169 [inline] #0: (rcu_read_lock){......}, at: [<000000000014de4a>] watchdog+0x14b/0xaf0 kernel/hung_task.c:263 #1: (tasklist_lock){.+.+..}, at: [<000000003e2a4b83>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4336 1 lock held by rsyslogd/1895: #0: (&f->f_pos_lock){+.+.+.}, at: [<00000000725e6b6b>] __fdget_pos+0xa8/0xd0 fs/file.c:782 2 locks held by getty/2022: #0: (&tty->ldisc_sem){++++++}, at: [<00000000c8f50eca>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+...}, at: [<0000000075c64723>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156 1 lock held by init/15111: #0: (tty_mutex){+.+.+.}, at: [<0000000038fa0e89>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<0000000038fa0e89>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/15112: #0: (tty_mutex){+.+.+.}, at: [<0000000038fa0e89>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<0000000038fa0e89>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/15113: #0: (tty_mutex){+.+.+.}, at: [<0000000038fa0e89>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<0000000038fa0e89>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/15114: #0: (tty_mutex){+.+.+.}, at: [<0000000038fa0e89>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<0000000038fa0e89>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/15118: #0: (tty_mutex){+.+.+.}, at: [<0000000038fa0e89>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<0000000038fa0e89>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.194+ #0 ffff8801d98d7cc8 ffffffff81b67001 0000000000000001 0000000000000000 0000000000000001 ffffffff81099d01 dffffc0000000000 ffff8801d98d7d00 ffffffff81b7229c 0000000000000001 0000000000000000 0000000000000001 Call Trace: [<0000000084dfc82b>] __dump_stack lib/dump_stack.c:15 [inline] [<0000000084dfc82b>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<00000000941f12b2>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99 [<00000000d873c7a7>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60 [<00000000b733d36a>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [<00000000cdefbe2f>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [<00000000cdefbe2f>] check_hung_task kernel/hung_task.c:126 [inline] [<00000000cdefbe2f>] check_hung_uninterruptible_tasks kernel/hung_task.c:183 [inline] [<00000000cdefbe2f>] watchdog+0x670/0xaf0 kernel/hung_task.c:263 [<00000000b0c887b9>] kthread+0x278/0x310 kernel/kthread.c:211 [<00000000d09c6e21>] 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: 15109 Comm: init Not tainted 4.9.194+ #0 task: 000000009bc8c638 task.stack: 00000000bc67c4db RIP: 0010:[] c [<000000003ccd425e>] rdtsc arch/x86/include/asm/msr.h:167 [inline] RIP: 0010:[] c [<000000003ccd425e>] rdtsc_ordered arch/x86/include/asm/msr.h:192 [inline] RIP: 0010:[] c [<000000003ccd425e>] delay_tsc+0x4c/0xc0 arch/x86/lib/delay.c:60 RSP: 0018:ffff88016cea7540 EFLAGS: 00000046 RAX: 000000003efc9bfc RBX: 000004cd3efc9ad8 RCX: 0000000000000000 RDX: 00000000000004cd RSI: ffffffff81bcd65c RDI: ffffffff82b45800 RBP: ffff88016cea7560 R08: 0000000000000001 R09: 0000000000003921 R10: ffff8801ca736800 R11: 0000000000000001 R12: 000004cd3efc9aaf R13: 0000000000000000 R14: 00000000000008fd R15: fffffbfff096d1cd FS: 00007fc77662f7a0(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f61abbf5000 CR3: 00000001d16af000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Stack: ffffffff84b68e20c 000000000000270dc 0000000000000020c fffffbfff096d20bc ffff88016cea7570c ffffffff81b95e50c ffff88016cea7580c ffffffff81b95e8ac ffff88016cea75d0c ffffffff81d88effc ffff88016cea7608c ffffffff84b68e68c Call Trace: [<00000000288280cc>] __delay+0x10/0x20 arch/x86/lib/delay.c:160 [<0000000061dbf533>] __const_udelay+0x2a/0x30 arch/x86/lib/delay.c:174 [<0000000042e9e9be>] wait_for_xmitr+0x6f/0x1e0 drivers/tty/serial/8250/8250_port.c:2005 [<00000000440bac7d>] serial8250_console_putchar+0x20/0x60 drivers/tty/serial/8250/8250_port.c:3103 [<000000007e5cf832>] uart_console_write+0x56/0xe0 drivers/tty/serial/serial_core.c:1885 [<00000000270315c4>] serial8250_console_write+0x2fb/0x860 drivers/tty/serial/8250/8250_port.c:3169 [<000000009b373bbc>] univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:594 [<000000008cd91c0c>] call_console_drivers.isra.0.constprop.0+0x1ac/0x360 kernel/printk/printk.c:1594 [<0000000079559df8>] console_unlock+0x47c/0xb20 kernel/printk/printk.c:2454 [<00000000d1c2f1a7>] console_device+0x97/0xc0 kernel/printk/printk.c:2562 [<00000000366e48fa>] tty_lookup_driver drivers/tty/tty_io.c:2018 [inline] [<00000000366e48fa>] tty_open_by_driver drivers/tty/tty_io.c:2063 [inline] [<00000000366e48fa>] tty_open+0x796/0xe10 drivers/tty/tty_io.c:2140 [<00000000be6314f9>] chrdev_open+0x230/0x630 fs/char_dev.c:398 [<00000000b72f1a89>] do_dentry_open+0x422/0xd20 fs/open.c:791 [<0000000079b1ed2e>] vfs_open+0x105/0x230 fs/open.c:904 [<00000000adc0aeda>] do_last fs/namei.c:3541 [inline] [<00000000adc0aeda>] path_openat+0xbf5/0x2f60 fs/namei.c:3665 [<0000000079c78610>] do_filp_open+0x1a1/0x280 fs/namei.c:3699 [<0000000091a6ea4e>] do_sys_open+0x2f0/0x610 fs/open.c:1097 [<00000000e8cfee43>] SYSC_open fs/open.c:1115 [inline] [<00000000e8cfee43>] SyS_open+0x2d/0x40 fs/open.c:1110 [<00000000d472683e>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000042e03138>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: cae ce8 c0f c31 c48 cc1 ce2 c20 c48 c09 cc2 c49 c89 cd4 ceb c16 cf3 c90 cbf c01 c00 c00 c00 ce8 cf3 c51 c5d cff ce8 cce c78 c03 c00 c44 c39 ce8 c75 c36 c0f cae ce8 c0f c31 c<48> cc1 ce2 c20 c48 c89 cd3 c48 c09 cc3 c48 c89 cd8 c4c c29 ce0 c4c c39 cf0 c73 c24 c