loop5: p113 start 1854537728 is beyond EOD, truncated loop5: p114 start 1854537728 is beyond EOD, truncated loop5: p115 start 1854537728 is beyond EOD, truncated loop5: p116 start 1854537728 is beyond EOD, truncated loop5: p117 start 1854537728 is beyond EOD, INFO: task init:25151 blocked for more than 140 seconds. Not tainted 4.9.189+ #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. init D29128 25151 1 0x10000000 0000000000000087 ffff8801c6578000 ffff8801cf7dcd00 ffff8801db621000 ffff8801a5a217c0 ffff8801db621018 ffff8801c92c7758 ffffffff82818d1e ffff8801c92c7698 ffffffff81249481 00ff8801c92c7750 ffff8801db6218f0 Call Trace: [<00000000e6adc4db>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<0000000045f7dbf6>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3579 [<0000000069cfd54f>] __mutex_lock_common kernel/locking/mutex.c:582 [inline] [<0000000069cfd54f>] mutex_lock_nested+0x38d/0x920 kernel/locking/mutex.c:621 [<00000000baa1e83c>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] [<00000000baa1e83c>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 [<0000000087adc4ad>] chrdev_open+0x230/0x630 fs/char_dev.c:398 [<00000000613b238c>] do_dentry_open+0x422/0xd20 fs/open.c:791 [<00000000fcd6dc64>] vfs_open+0x105/0x230 fs/open.c:904 [<0000000082049cca>] do_last fs/namei.c:3457 [inline] [<0000000082049cca>] path_openat+0xbf5/0x2f60 fs/namei.c:3581 [<000000001af4d2b8>] do_filp_open+0x1a1/0x280 fs/namei.c:3615 [<0000000020a754be>] do_sys_open+0x2f0/0x610 fs/open.c:1097 [<000000004dc6241d>] SYSC_open fs/open.c:1115 [inline] [<000000004dc6241d>] SyS_open+0x2d/0x40 fs/open.c:1110 [<00000000dfa9e576>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000032f8e4ab>] 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: [<000000002f307231>] check_hung_uninterruptible_tasks kernel/hung_task.c:169 [inline] #0: (rcu_read_lock){......}, at: [<000000002f307231>] watchdog+0x14b/0xaf0 kernel/hung_task.c:263 #1: (tasklist_lock){.+.+..}, at: [<00000000e4ea5abc>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4336 1 lock held by rsyslogd/1897: #0: (&f->f_pos_lock){+.+.+.}, at: [<00000000c50d6d3a>] __fdget_pos+0xa8/0xd0 fs/file.c:782 2 locks held by getty/2025: #0: (&tty->ldisc_sem){++++++}, at: [<000000003d1973e0>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.+.}, at: [<00000000d27d313f>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156 1 lock held by init/25151: #0: (tty_mutex){+.+.+.}, at: [<00000000baa1e83c>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000baa1e83c>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/25152: #0: (tty_mutex){+.+.+.}, at: [<00000000baa1e83c>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000baa1e83c>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/25153: #0: (tty_mutex){+.+.+.}, at: [<00000000baa1e83c>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000baa1e83c>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/25472: #0: (tty_mutex){+.+.+.}, at: [<00000000baa1e83c>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000baa1e83c>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/25479: #0: (tty_mutex){+.+.+.}, at: [<00000000baa1e83c>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000baa1e83c>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.189+ #4 ffff8801d98d7cc8 ffffffff81b65c01 0000000000000000 0000000000000000 0000000000000000 ffffffff81099a01 dffffc0000000000 ffff8801d98d7d00 ffffffff81b70e9c 0000000000000000 0000000000000000 0000000000000000 Call Trace: [<00000000280cec22>] __dump_stack lib/dump_stack.c:15 [inline] [<00000000280cec22>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<0000000072b11f5e>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99 [<00000000545fcfa3>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60 [<00000000d7399fdc>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [<000000000986e187>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [<000000000986e187>] check_hung_task kernel/hung_task.c:126 [inline] [<000000000986e187>] check_hung_uninterruptible_tasks kernel/hung_task.c:183 [inline] [<000000000986e187>] watchdog+0x670/0xaf0 kernel/hung_task.c:263 [<00000000c976900e>] kthread+0x278/0x310 kernel/kthread.c:211 [<0000000091866b84>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 20984 Comm: syz-executor.0 Not tainted 4.9.189+ #4 task: 00000000ceac2a44 task.stack: 000000006ea800fe RIP: 0010:[] c [<00000000c24d89f6>] __sanitizer_cov_trace_pc+0x26/0x50 kernel/kcov.c:100 RSP: 0018:ffff8801a8d87a18 EFLAGS: 00000246 RAX: ffff88018fc497c0 RBX: ffff8801a8d87b40 RCX: 1ffffffff05d1e85 RDX: 0000000000000000 RSI: ffffffff81a12cd9 RDI: ffffffff82e8f428 RBP: ffff8801a8d87a18 R08: 1ffff100351b0f50 R09: ffffed00351b0f53 R10: ffffed00351b0f52 R11: 0000000000000003 R12: 0000000000000004 R13: 00000000000000cf R14: 0000000000000002 R15: 0000000000000000 FS: 000000000122a940(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001a6ed5000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801a8d87b68c ffffffff81a12cd9c ffffffff81a12c1cc dffffc0000000000c ffff88018fc4a8e0c 0000000000000000c ffff8801a8d87a80c 1ffff100351b0f4cc 000000cf8116a7d5c 0000000041b58ab3c ffffffff82e563c0c ffffffff81a12b70c Call Trace: [<0000000077c5435c>] rcu_read_unlock include/linux/rcupdate.h:928 [inline] [<0000000077c5435c>] avc_has_perm_noaudit security/selinux/avc.c:1120 [inline] [<0000000077c5435c>] avc_has_perm+0x169/0x3a0 security/selinux/avc.c:1146 [<00000000f29faa77>] task_has_perm+0x200/0x330 security/selinux/hooks.c:1637 [<00000000917e8e3a>] selinux_task_wait+0x24/0x30 security/selinux/hooks.c:3980 [<0000000046d9b213>] security_task_wait+0x73/0xb0 security/security.c:1039 [<00000000626b2841>] wait_consider_task+0x294/0x35e0 kernel/exit.c:1386 [<0000000038906461>] do_wait_thread kernel/exit.c:1499 [inline] [<0000000038906461>] do_wait+0x3fc/0x930 kernel/exit.c:1570 [<000000005502113d>] SYSC_wait4 kernel/exit.c:1702 [inline] [<000000005502113d>] SyS_wait4+0x144/0x210 kernel/exit.c:1667 [<00000000dfa9e576>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000032f8e4ab>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: c00 c0f c1f c40 c00 c55 c48 c89 ce5 c48 c8b c75 c08 c65 c48 c8b c04 c25 c00 c7e c01 c00 c65 c8b c15 c08 c5a ccf c7e c81 ce2 c00 c01 c1f c00 c75 c2b c8b c90 c38 c12 c00 c00 c<83> cfa c02 c75 c20 c48 c8b c88 c40 c12 c00 c00 c8b c80 c3c c12 c00 c00 c48 c8b c11 c