binder: 10254:10254 transaction failed 29189/-22, size 0-24 line 3013 binder: 10255:10255 transaction failed 29189/-22, size 0-24 line 3013 binder: 10256:10256 transaction failed 29189/-22, size 0-24 line 3013 binder: 10257:10257 transaction failed 29189/-22, size 0-24 line 3013 binder: 10258:10258 transaction failed 29189/-22, size 0-24 line 3013 INFO: task init:17751 blocked for more than 140 seconds. Not tainted 4.9.141+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. init D29336 17751 1 0x00000000 ffff8801ac8ac740 ffff8801c3729b80 ffff8801c372a680 ffff8801a7008000 ffff8801db721018 ffff8801a77e7738 ffffffff828075c2 0000000000000000 ffff8801ac8acff0 ffffed00359159fd 00ff8801ac8ac740 ffff8801db7218f0 Call Trace: [] schedule+0x7f/0x1b0 kernel/sched/core.c:3553 [] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3586 [] __mutex_lock_common kernel/locking/mutex.c:582 [inline] [] mutex_lock_nested+0x38d/0x900 kernel/locking/mutex.c:621 [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 [] chrdev_open+0x22d/0x5c0 fs/char_dev.c:392 [] do_dentry_open+0x3ef/0xc90 fs/open.c:766 [] vfs_open+0x11c/0x210 fs/open.c:879 [] do_last fs/namei.c:3410 [inline] [] path_openat+0x542/0x2790 fs/namei.c:3534 [] do_filp_open+0x197/0x270 fs/namei.c:3568 [] do_sys_open+0x30d/0x5c0 fs/open.c:1072 [] SYSC_open fs/open.c:1090 [inline] [] SyS_open+0x2d/0x40 fs/open.c:1085 [] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285 [] 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: [] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline] #0: (rcu_read_lock){......}, at: [] watchdog+0x11c/0xa20 kernel/hung_task.c:239 #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336 1 lock held by rsyslogd/1900: #0: (&f->f_pos_lock){+.+.+.}, at: [] __fdget_pos+0xac/0xd0 fs/file.c:781 2 locks held by getty/2027: #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367 #1: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142 1 lock held by init/17751: #0: (tty_mutex){+.+.+.}, at: [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 1 lock held by init/17752: #0: (tty_mutex){+.+.+.}, at: [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 1 lock held by init/17753: #0: (tty_mutex){+.+.+.}, at: [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 1 lock held by init/17754: #0: (tty_mutex){+.+.+.}, at: [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 1 lock held by init/17755: #0: (tty_mutex){+.+.+.}, at: [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 1 lock held by init/17756: #0: (tty_mutex){+.+.+.}, at: [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.141+ #1 ffff8801d9907d08 ffffffff81b42e79 0000000000000000 0000000000000001 0000000000000001 0000000000000001 ffffffff810983b0 ffff8801d9907d40 ffffffff81b4df89 0000000000000001 0000000000000000 0000000000000002 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99 [] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60 [] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [] check_hung_task kernel/hung_task.c:125 [inline] [] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline] [] watchdog+0x6ad/0xa20 kernel/hung_task.c:239 [] kthread+0x26d/0x300 kernel/kthread.c:211 [] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2156 Comm: syz-executor507 Not tainted 4.9.141+ #1 task: ffff8801cb295f00 task.stack: ffff8801cd2d0000 RIP: 0010:[] c [] validate_chain kernel/locking/lockdep.c:2270 [inline] RIP: 0010:[] c [] __lock_acquire+0x890/0x4a10 kernel/locking/lockdep.c:3345 RSP: 0018:ffff8801cd2d7920 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffff8801cb2967b0 RCX: 00000000ffffff90 RDX: 1ffffffff06c3293 RSI: ffff8801cb2967b0 RDI: ffffffff83619498 RBP: ffff8801cd2d7ac8 R08: ffff8801cb2967d0 R09: dbe80b0c9fef2ff3 R10: ffff8801cb295f00 R11: 0000000000000001 R12: ffffffff83619488 R13: 0000000000000000 R14: 0000000013783362 R15: 000000008c76fc91 FS: 00000000019a5880(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c3588 CR3: 00000001cf77b000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 0000000000000000c ffff8801d8186a50c ffff8801d8186affc ffff8801cd2d7b70c ffffffff814f1ff9c 000000400000000ac ffff8801cd2d7960c ffffffff00000000c ffffffff81077c16c ffff8801cb2967b0c ffffffff83c73510c 0000000000000000c Call Trace: [] lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:130 [inline] [] _raw_spin_lock_irq+0x42/0x60 kernel/locking/spinlock.c:167 [] spin_lock_irq include/linux/spinlock.h:332 [inline] [] alloc_pid+0x575/0xcc0 kernel/pid.c:337 [] copy_process.part.8+0x25d8/0x6a10 kernel/fork.c:1706 [] copy_process kernel/fork.c:1505 [inline] [] _do_fork+0x1b2/0xd30 kernel/fork.c:1972 [] SYSC_clone kernel/fork.c:2084 [inline] [] SyS_clone+0x37/0x50 kernel/fork.c:2078 [] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: c8b c54 c24 c78 c48 cc1 cea c03 c0f cb6 c04 c02 c84 cc0 c74 c08 c3c c03 c0f c8e cfa c2c c00 c00 c8b c43 c20 c25 c00 c80 c04 c00 c3d c00 c00 c04 c00 c0f c84 c68 c04 c00 c00 c<48> cc7 cc2 c00 c25 c1f c83 c48 cb8 c00 c00 c00 c00 c00 cfc cff cdf c48 cc1 cea c03 c binder: 10259:10259 transaction failed 29189/-22, size 0-24 line 3013