loop1: p252 start 1854537728 is beyond EOD, truncated loop1: p253 start 1854537728 is beyond EOD, truncated loop1: p254 start 1854537728 is beyond EOD, truncated loop1: p255 start 1854537728 is beyond EOD, truncated INFO: task init:2107 blocked for more than 140 seconds. Not tainted 4.9.188+ #19 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. init D28584 2107 1 0x00000000 0000000000000087 ffff8801ca93af80 0000000000000000 ffff8801db621000 ffffffff83031180 ffff8801db621018 ffff8801cabaf758 ffffffff8281749e ffff88010000000d 1ffff10039575ed4 00ffe8ffffc12640 ffff8801db6218f0 Call Trace: [<000000002bf9a6c6>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<00000000b90246a3>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3579 [<0000000080c52b7c>] __mutex_lock_common kernel/locking/mutex.c:582 [inline] [<0000000080c52b7c>] mutex_lock_nested+0x38d/0x920 kernel/locking/mutex.c:621 [<00000000a0cfb33c>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] [<00000000a0cfb33c>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 [<000000005b8a8b01>] chrdev_open+0x230/0x630 fs/char_dev.c:398 [<00000000de9d3286>] do_dentry_open+0x422/0xd20 fs/open.c:791 [<000000001df90482>] vfs_open+0x105/0x230 fs/open.c:904 [<000000006a052ff9>] do_last fs/namei.c:3457 [inline] [<000000006a052ff9>] path_openat+0xbf5/0x2f60 fs/namei.c:3581 [<000000006b049054>] do_filp_open+0x1a1/0x280 fs/namei.c:3615 [<000000001c2f94fa>] do_sys_open+0x2f0/0x610 fs/open.c:1097 [<000000002b7b2f8f>] SYSC_open fs/open.c:1115 [inline] [<000000002b7b2f8f>] SyS_open+0x2d/0x40 fs/open.c:1110 [<000000003466c8d2>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<00000000a2474679>] 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: [<00000000080779fb>] check_hung_uninterruptible_tasks kernel/hung_task.c:169 [inline] #0: (rcu_read_lock){......}, at: [<00000000080779fb>] watchdog+0x14b/0xaf0 kernel/hung_task.c:263 #1: (tasklist_lock){.+.+..}, at: [<0000000078263eee>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4336 1 lock held by rsyslogd/1897: #0: (&f->f_pos_lock){+.+.+.}, at: [<000000008c6242f9>] __fdget_pos+0xa8/0xd0 fs/file.c:782 2 locks held by getty/2025: #0: (&tty->ldisc_sem){++++++}, at: [<00000000174c67a5>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+...}, at: [<000000002a937b46>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156 2 locks held by udevd/3915: #0: (sb_writers#6){.+.+.+}, at: [<000000006683a7ca>] sb_start_write include/linux/fs.h:1579 [inline] #0: (sb_writers#6){.+.+.+}, at: [<000000006683a7ca>] mnt_want_write+0x3f/0xb0 fs/namespace.c:391 #1: (&type->i_mutex_dir_key#4/1){+.+.+.}, at: [<00000000cdb2c4b6>] inode_lock_nested include/linux/fs.h:806 [inline] #1: (&type->i_mutex_dir_key#4/1){+.+.+.}, at: [<00000000cdb2c4b6>] lock_rename+0x236/0x290 fs/namei.c:2898 2 locks held by udevd/3942: #0: (sb_writers#6){.+.+.+}, at: [<000000006683a7ca>] sb_start_write include/linux/fs.h:1579 [inline] #0: (sb_writers#6){.+.+.+}, at: [<000000006683a7ca>] mnt_want_write+0x3f/0xb0 fs/namespace.c:391 #1: (&type->i_mutex_dir_key#4/1){+.+.+.}, at: [<00000000cdb2c4b6>] inode_lock_nested include/linux/fs.h:806 [inline] #1: (&type->i_mutex_dir_key#4/1){+.+.+.}, at: [<00000000cdb2c4b6>] lock_rename+0x236/0x290 fs/namei.c:2898 2 locks held by udevd/30488: #0: (sb_writers#6){.+.+.+}, at: [<000000006683a7ca>] sb_start_write include/linux/fs.h:1579 [inline] #0: (sb_writers#6){.+.+.+}, at: [<000000006683a7ca>] mnt_want_write+0x3f/0xb0 fs/namespace.c:391 #1: (&type->i_mutex_dir_key#4){++++++}, at: [<000000006b6e8f5e>] inode_lock include/linux/fs.h:771 [inline] #1: (&type->i_mutex_dir_key#4){++++++}, at: [<000000006b6e8f5e>] do_last fs/namei.c:3353 [inline] #1: (&type->i_mutex_dir_key#4){++++++}, at: [<000000006b6e8f5e>] path_openat+0xe4b/0x2f60 fs/namei.c:3581 2 locks held by kworker/u4:12/1500: #0: ("events_unbound"){.+.+.+}, at: [<000000001ec5699d>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: ((&sub_info->work)){+.+.+.}, at: [<00000000b1e7ee22>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 1 lock held by init/2107: #0: (tty_mutex){+.+.+.}, at: [<00000000a0cfb33c>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000a0cfb33c>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/2108: #0: (tty_mutex){+.+.+.}, at: [<00000000a0cfb33c>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000a0cfb33c>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/2109: #0: (tty_mutex){+.+.+.}, at: [<00000000a0cfb33c>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000a0cfb33c>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/2303: #0: (tty_mutex){+.+.+.}, at: [<00000000a0cfb33c>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000a0cfb33c>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/2419: #0: (tty_mutex){+.+.+.}, at: [<00000000a0cfb33c>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<00000000a0cfb33c>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.188+ #19 ffff8801d9907cc8 ffffffff81b64a21 0000000000000001 0000000000000000 0000000000000001 ffffffff81099a01 dffffc0000000000 ffff8801d9907d00 ffffffff81b6fcbc 0000000000000001 0000000000000000 0000000000000001 Call Trace: [<0000000005b03ef8>] __dump_stack lib/dump_stack.c:15 [inline] [<0000000005b03ef8>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<0000000065ecb165>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99 [<00000000e366e375>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60 [<0000000098ad9483>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [<000000000961d29c>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [<000000000961d29c>] check_hung_task kernel/hung_task.c:126 [inline] [<000000000961d29c>] check_hung_uninterruptible_tasks kernel/hung_task.c:183 [inline] [<000000000961d29c>] watchdog+0x670/0xaf0 kernel/hung_task.c:263 [<000000007603356b>] kthread+0x278/0x310 kernel/kthread.c:211 [<0000000088bb197e>] 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: 6435 Comm: syz-executor.5 Not tainted 4.9.188+ #19 task: 0000000068314e83 task.stack: 00000000c7a55b48 RIP: 0010:[] c [<00000000044fbd1d>] __lock_release kernel/locking/lockdep.c:3516 [inline] RIP: 0010:[] c [<00000000044fbd1d>] lock_release+0x14b/0xc30 kernel/locking/lockdep.c:3775 RSP: 0018:ffff8801a2c6f760 EFLAGS: 00000802 RAX: 0000000000000000 RBX: ffff8801cbb1c740 RCX: 1ffffffff063fb70 RDX: 1ffff100397639fd RSI: 0000000000000001 RDI: ffff8801cbb1cfec RBP: ffff8801a2c6f808 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff831cedc0 R13: ffff8801a2c6f8f0 R14: ffffffff831cedd8 R15: 000000000000009d FS: 0000000000e29940(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000a744e0 CR3: 00000001a0b76000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Stack: 0000000000000046c ffff8801cbb1c740c 0000000000000000c 0000000000000000c 0000000000000000c ffff8801a2c6f800c 0000000000000046c 0000000000000000c ffffffff81a0ffa7c ffff8801cbb1cfe8c ffff880100000000c 0000000000000046c Call Trace: [<00000000d6e8b6d0>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] [<00000000d6e8b6d0>] _raw_spin_unlock_irqrestore+0x1f/0x70 kernel/locking/spinlock.c:191 [<0000000014ce6d70>] spin_unlock_irqrestore include/linux/spinlock.h:362 [inline] [<0000000014ce6d70>] avc_latest_notif_update security/selinux/avc.c:636 [inline] [<0000000014ce6d70>] avc_insert security/selinux/avc.c:667 [inline] [<0000000014ce6d70>] avc_compute_av+0x17d/0x610 security/selinux/avc.c:976 [<000000001e8d6962>] avc_has_perm_noaudit+0x2a8/0x300 security/selinux/avc.c:1112 [<0000000008e17871>] selinux_inode_permission+0x2db/0x4c0 security/selinux/hooks.c:3060 [<00000000afacbef4>] security_inode_permission+0xb9/0x100 security/security.c:611 [<00000000e627991a>] __inode_permission2+0x96/0x2e0 fs/namei.c:435 [<00000000ed08e21e>] inode_permission2+0x32/0x110 fs/namei.c:485 [<00000000f98c0a96>] may_lookup fs/namei.c:1724 [inline] [<00000000f98c0a96>] link_path_walk+0x1ba/0x1210 fs/namei.c:2105 [<00000000619f8a49>] path_lookupat.isra.0+0x6a/0x3f0 fs/namei.c:2323 [<0000000025bb995a>] filename_lookup+0x1a1/0x3b0 fs/namei.c:2358 [<00000000b652c95f>] user_path_at_empty+0x43/0x50 fs/namei.c:2619 [<000000001aea806d>] user_path_at include/linux/namei.h:55 [inline] [<000000001aea806d>] SYSC_chdir fs/open.c:471 [inline] [<000000001aea806d>] SyS_chdir+0x9c/0x1e0 fs/open.c:465 [<000000003466c8d2>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<00000000a2474679>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: c85 cc9 c0f c84 cd7 c03 c00 c00 c48 c8b c45 cd0 c48 c05 ca8 c08 c00 c00 c48 c89 cc2 c48 c89 c45 ca0 c48 cb8 c00 c00 c00 c00 c00 cfc cff cdf c48 cc1 cea c03 c0f cb6 c04 c02 c<84> cc0 c74 c08 c3c c03 c0f c8e c62 c08 c00 c00 c48 c8b c45 cd0 c48 cc7 cc2 cc0 c7a c