binder: 10456:10460 ioctl 40046207 0 returned -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 10464:10467 ioctl 40046207 0 returned -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 10468:10473 ioctl 40046207 0 returned -16 INFO: task init:23067 blocked for more than 140 seconds. Not tainted 4.4.174+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. init D ffff8800b35df718 29280 23067 1 0x00000000 ffff8800b35df718 ffff8800b33b8000 3318126d8e5e57f3 ffff8800b33b8000 0000000000000000 ffff8800b33b8800 ffff8801db71f180 ffff8801db71f1a8 ffff8801db71e898 ffff8800b33b97c0 ffff8800b33b8000 ffffed00166bb001 Call Trace: [] schedule+0x99/0x1d0 kernel/sched/core.c:3355 [] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3388 [] __mutex_lock_common kernel/locking/mutex.c:582 [inline] [] mutex_lock_nested+0x3c2/0xb80 kernel/locking/mutex.c:621 [] tty_open+0x56a/0xf50 drivers/tty/tty_io.c:2067 [] chrdev_open+0x230/0x630 fs/char_dev.c:388 [] do_dentry_open+0x38f/0xbd0 fs/open.c:749 [] vfs_open+0x10b/0x210 fs/open.c:862 [] do_last fs/namei.c:3269 [inline] [] path_openat+0x136f/0x4470 fs/namei.c:3406 [] do_filp_open+0x1a1/0x270 fs/namei.c:3440 [] do_sys_open+0x2f8/0x600 fs/open.c:1038 [] SYSC_open fs/open.c:1056 [inline] [] SyS_open+0x2d/0x40 fs/open.c:1051 [] entry_SYSCALL_64_fastpath+0x1e/0x9a 1 lock held by init/23067: #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x56a/0xf50 drivers/tty/tty_io.c:2067 Sending NMI to all CPUs: NMI backtrace for cpu 0 CPU: 0 PID: 10474 Comm: syz-executor.2 Not tainted 4.4.174+ #17 task: ffff8800b88bdf00 task.stack: ffff8800b2c18000 RIP: 0010:[] [] __trace_hardirqs_on_caller kernel/locking/lockdep.c:2569 [inline] RIP: 0010:[] [] trace_hardirqs_on_caller+0x2f5/0x5a0 kernel/locking/lockdep.c:2612 RSP: 0018:ffff8800b2c1fa90 EFLAGS: 00000046 RAX: 0000000000000164 RBX: ffff8800b88bdf00 RCX: 0000000000000000 RDX: 1ffff10017117cee RSI: 0000000000000001 RDI: ffff8800b88be770 RBP: ffff8800b2c1faa0 R08: ffff8800b2c1fb10 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8148535a R13: 0000000000000246 R14: ffff8801da548dc0 R15: 0000000000000202 FS: 0000000000000000(0000) GS:ffff8801db600000(0063) knlGS:00000000f7710b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000008b3396c CR3: 00000001d820a000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801db61b520 ffff8801d0532200 ffff8800b2c1fab0 ffffffff811ff5ad ffff8800b2c1fb00 ffffffff8148535a 0000000000000000 0000000000000000 0000000000000000 2a1df199f05605b2 ffff8801d0533200 ffff8801da548dc0 Call Trace: [] trace_hardirqs_on+0xd/0x10 kernel/locking/lockdep.c:2619 [] quarantine_put+0xda/0x180 mm/kasan/quarantine.c:209 [] kasan_slab_free+0x11a/0x190 mm/kasan/kasan.c:590 [] slab_free_hook mm/slub.c:1383 [inline] [] slab_free_freelist_hook mm/slub.c:1405 [inline] [] slab_free mm/slub.c:2859 [inline] [] kmem_cache_free+0xbe/0x350 mm/slub.c:2881 [] putname+0xdb/0x120 fs/namei.c:256 [] do_sys_open+0x232/0x600 fs/open.c:1047 [] C_SYSC_open fs/compat.c:1092 [inline] [] compat_SyS_open+0x2a/0x40 fs/compat.c:1090 [] do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline] [] do_fast_syscall_32+0x32d/0xa90 arch/x86/entry/common.c:397 [] sysenter_flags_fixed+0xd/0x1a Code: 78 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 7e 01 00 00 8b 83 70 08 00 00 <48> 8d bb 88 08 00 00 48 89 fa 48 c1 ea 03 44 8d 60 01 48 b8 00 NMI backtrace for cpu 1 CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #17 task: ffff8801da6c4740 task.stack: ffff8801d9ed8000 RIP: 0010:[] [] _flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:62 [inline] RIP: 0010:[] [] flat_send_IPI_mask+0xf7/0x1b0 arch/x86/kernel/apic/apic_flat_64.c:69 RSP: 0018:ffff8801d9edfc88 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000 RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300 RBP: ffff8801d9edfcb8 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: 0000000009f991b4 CR3: 00000000b270f000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 0000000000000001 ffffffff82e5f2e0 ffffffff831a6ac0 fffffbfff0634c34 000000000001b6c0 0000000000000008 ffff8801d9edfcd8 ffffffff81092bee 0000000000000008 ffffffff82924260 ffff8801d9edfd30 ffffffff81ab8252 Call Trace: [] nmi_raise_cpu_backtrace+0x5e/0x80 arch/x86/kernel/apic/hw_nmi.c:33 [] nmi_trigger_all_cpu_backtrace.cold+0xa1/0xae lib/nmi_backtrace.c:85 [] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 [] trigger_all_cpu_backtrace include/linux/nmi.h:44 [inline] [] check_hung_task kernel/hung_task.c:125 [inline] [] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline] [] watchdog.cold+0xd3/0xee kernel/hung_task.c:238 [] kthread+0x273/0x310 kernel/kthread.c:211 [] 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