binder: 13049:13057 ioctl 4018620d 0 returned -22
binder: 13052:13056 ioctl 4018620d 0 returned -22
binder: 13049:13057 ioctl 4018620d 0 returned -22
binder: 13051:13058 ioctl 4018620d 0 returned -22
binder: 13051:13058 ioctl 4018620d 0 returned -22
INFO: task init:29847 blocked for more than 140 seconds.
      Not tainted 4.4.174+ #4
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
init            D ffff8800b53ef718 29280 29847      1 0x00000000
 ffff8800b53ef718 ffff8800b0da97c0 ae47d253131a9270 ffff8800b0da97c0
 0000000000000000 ffff8800b0daa000 ffff8801db71f180 ffff8801db71f1a8
 ffff8801db71e898 ffff8800b7465f00 ffff8800b0da97c0 ffffed0016a7d001
Call Trace:
 [<ffffffff82709b79>] schedule+0x99/0x1d0 kernel/sched/core.c:3355
 [<ffffffff8270a333>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3388
 [<ffffffff8270c492>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<ffffffff8270c492>] mutex_lock_nested+0x3c2/0xb80 kernel/locking/mutex.c:621
 [<ffffffff81c8b2aa>] tty_open+0x56a/0xf50 drivers/tty/tty_io.c:2067
 [<ffffffff814a3ec0>] chrdev_open+0x230/0x630 fs/char_dev.c:388
 [<ffffffff8149154f>] do_dentry_open+0x38f/0xbd0 fs/open.c:749
 [<ffffffff81494d3b>] vfs_open+0x10b/0x210 fs/open.c:862
 [<ffffffff814c5ddf>] do_last fs/namei.c:3269 [inline]
 [<ffffffff814c5ddf>] path_openat+0x136f/0x4470 fs/namei.c:3406
 [<ffffffff814ccab1>] do_filp_open+0x1a1/0x270 fs/namei.c:3440
 [<ffffffff81495668>] do_sys_open+0x2f8/0x600 fs/open.c:1038
 [<ffffffff8149599d>] SYSC_open fs/open.c:1056 [inline]
 [<ffffffff8149599d>] SyS_open+0x2d/0x40 fs/open.c:1051
 [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a
1 lock held by init/29847:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81c8b2aa>] tty_open+0x56a/0xf50 drivers/tty/tty_io.c:2067
Sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 13060 Comm: syz-executor.3 Not tainted 4.4.174+ #4
task: ffff8800b28b8000 task.stack: ffff8801d82c8000
RIP: 0010:[<ffffffff811afb0d>]  [<ffffffff811afb0d>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP: 0010:[<ffffffff811afb0d>]  [<ffffffff811afb0d>] static_key_count include/linux/jump_label.h:172 [inline]
RIP: 0010:[<ffffffff811afb0d>]  [<ffffffff811afb0d>] static_key_false include/linux/jump_label.h:182 [inline]
RIP: 0010:[<ffffffff811afb0d>]  [<ffffffff811afb0d>] trace_sched_load_avg_cpu include/trace/events/sched.h:706 [inline]
RIP: 0010:[<ffffffff811afb0d>]  [<ffffffff811afb0d>] update_cfs_rq_load_avg kernel/sched/fair.c:3160 [inline]
RIP: 0010:[<ffffffff811afb0d>]  [<ffffffff811afb0d>] update_load_avg kernel/sched/fair.c:3193 [inline]
RIP: 0010:[<ffffffff811afb0d>]  [<ffffffff811afb0d>] dequeue_entity kernel/sched/fair.c:3598 [inline]
RIP: 0010:[<ffffffff811afb0d>]  [<ffffffff811afb0d>] dequeue_task_fair+0x162d/0x86a0 kernel/sched/fair.c:4791
RSP: 0018:ffff8801d82cf8b0  EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff8801db61e928 RCX: ffff8801db61e880
RDX: 000000000000172e RSI: 0000000000000000 RDI: ffff8801db61e9a8
RBP: ffff8801d82cf9a8 R08: 000000001c70787f R09: ffff8801db61e99c
R10: 0000000000000244 R11: ffff8801db61e990 R12: ffff8801db61e928
R13: ffffffff82836880 R14: dffffc0000000000 R15: ffff8800b28b8060
FS:  00007fb413f1b700(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000b3c6a000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff88021fffd017 ffff88021fffd01b ffff88021fffd00f ffffed0043fffa03
 ffff88021fffd01c ffff88021fffd008 ffff880100000001 ffff8801db61e9b0
 ffff8801db61e880 000000001c3a187f 0000000000000244 0000000000000000
Call Trace:
 [<ffffffff81163c39>] dequeue_task kernel/sched/core.c:866 [inline]
 [<ffffffff81163c39>] deactivate_task+0x229/0x2e0 kernel/sched/core.c:882
 [<ffffffff82708334>] __schedule+0x8e4/0x1ee0 kernel/sched/core.c:3286
 [<ffffffff82709b79>] schedule+0x99/0x1d0 kernel/sched/core.c:3355
 [<ffffffff810d9a1e>] do_exit+0x17de/0x2c60 kernel/exit.c:843
 [<ffffffff810df091>] do_group_exit+0x111/0x300 kernel/exit.c:893
 [<ffffffff81100a97>] get_signal+0x517/0x1570 kernel/signal.c:2321
 [<ffffffff8100bd4c>] do_signal+0x9c/0x1840 arch/x86/kernel/signal.c:712
 [<ffffffff81003da7>] exit_to_usermode_loop+0x127/0x170 arch/x86/entry/common.c:184
 [<ffffffff8100569b>] prepare_exit_to_usermode arch/x86/entry/common.c:221 [inline]
 [<ffffffff8100569b>] syscall_return_slowpath+0x25b/0x2e0 arch/x86/entry/common.c:286
 [<ffffffff82718ce1>] int_ret_from_sys_call+0x25/0xa3
Code: ff ff 48 c7 c0 e8 ac 19 83 48 c1 e8 03 42 0f b6 04 30 84 c0 74 08 3c 03 0f 8e ec 50 00 00 49 c7 c5 80 68 83 82 8b 05 db b1 fe 01 <4c> 89 ea 48 c1 ea 03 42 80 3c 32 00 0f 85 a8 50 00 00 85 c0 4c 
NMI backtrace for cpu 1
CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #4
task: ffff8801da6f4740 task.stack: ffff8800001d0000
RIP: 0010:[<ffffffff8109b617>]  [<ffffffff8109b617>] _flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:62 [inline]
RIP: 0010:[<ffffffff8109b617>]  [<ffffffff8109b617>] flat_send_IPI_mask+0xf7/0x1b0 arch/x86/kernel/apic/apic_flat_64.c:69
RSP: 0018:ffff8800001d7c88  EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000
RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300
RBP: ffff8800001d7cb8 R08: 0000000000000018 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246
R13: 0000000003000000 R14: ffffffff82e5f2e0 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f702a80f000 CR3: 00000001d4cbb000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000001 ffffffff82e5f2e0 ffffffff831a6ac0 fffffbfff0634c34
 000000000001b6c0 0000000000000008 ffff8800001d7cd8 ffffffff81092bee
 0000000000000008 ffffffff82924260 ffff8800001d7d30 ffffffff81ab8252
Call Trace:
 [<ffffffff81092bee>] nmi_raise_cpu_backtrace+0x5e/0x80 arch/x86/kernel/apic/hw_nmi.c:33
 [<ffffffff81ab8252>] nmi_trigger_all_cpu_backtrace.cold+0xa1/0xae lib/nmi_backtrace.c:85
 [<ffffffff81092ca4>] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 [<ffffffff813b4762>] trigger_all_cpu_backtrace include/linux/nmi.h:44 [inline]
 [<ffffffff813b4762>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff813b4762>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff813b4762>] watchdog.cold+0xd3/0xee kernel/hung_task.c:238
 [<ffffffff811342c3>] kthread+0x273/0x310 kernel/kthread.c:211
 [<ffffffff82718fc5>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:537
Code: 00 c3 5f ff 80 e6 10 75 e1 41 c1 e5 18 44 89 2c 25 10 c3 5f ff 44 89 fa 09 da 80 cf 04 41 83 ff 02 0f 44 d3 89 14 25 00 c3 5f ff <41> f7 c4 00 02 00 00 75 1e 4c 89 e7 57 9d 0f 1f 44 00 00 e8 f1