binder: 22430:22436 ioctl 40046205 6 returned -22 binder: send failed reply for transaction 64 to 22430:22433 binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29189 INFO: task syz-executor5:22424 blocked for more than 120 seconds. Not tainted 4.17.0-rc6+ #63 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D19696 22424 4579 0x00000004 Call Trace: context_switch kernel/sched/core.c:2859 [inline] __schedule+0x801/0x1e30 kernel/sched/core.c:3501 schedule+0xef/0x430 kernel/sched/core.c:3545 io_schedule+0x1c/0x70 kernel/sched/core.c:5165 wait_on_page_bit_common+0x4dc/0x770 mm/filemap.c:1100 wait_on_page_bit mm/filemap.c:1133 [inline] wait_on_page_locked include/linux/pagemap.h:530 [inline] __lock_page_or_retry+0x4f7/0x600 mm/filemap.c:1311 lock_page_or_retry include/linux/pagemap.h:510 [inline] filemap_fault+0x7a2/0x2200 mm/filemap.c:2530 __do_fault+0xe6/0x430 mm/memory.c:3222 do_cow_fault mm/memory.c:3661 [inline] do_fault mm/memory.c:3734 [inline] handle_pte_fault mm/memory.c:3963 [inline] __handle_mm_fault+0x11a2/0x4310 mm/memory.c:4087 handle_mm_fault+0x53a/0xc70 mm/memory.c:4124 faultin_page mm/gup.c:502 [inline] __get_user_pages+0x7d1/0x1a60 mm/gup.c:702 populate_vma_page_range+0x2db/0x3c0 mm/gup.c:1206 __mm_populate+0x2c6/0x500 mm/gup.c:1256 mm_populate include/linux/mm.h:2246 [inline] vm_mmap_pgoff+0x267/0x2a0 mm/util.c:362 ksys_mmap_pgoff+0x4c9/0x640 mm/mmap.c:1585 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455a09 RSP: 002b:00007fdc5aaedc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fdc5aaee6d4 RCX: 0000000000455a09 RDX: 0000000000000002 RSI: 0000000000004000 RDI: 0000000020ffa000 RBP: 000000000072bea0 R08: 0000000000000013 R09: 0000000000000000 R10: 0000000000008012 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000049f R14: 00000000006faf88 R15: 0000000000000000 Showing all locks held in the system: 2 locks held by khungtaskd/893: #0: 00000000948569e8 (rcu_read_lock){....}, at: check_hung_uninterruptible_tasks kernel/hung_task.c:175 [inline] #0: 00000000948569e8 (rcu_read_lock){....}, at: watchdog+0x1ff/0xf60 kernel/hung_task.c:249 #1: 000000007b86dddb (tasklist_lock){.+.+}, at: debug_show_all_locks+0xde/0x34a kernel/locking/lockdep.c:4470 1 lock held by rsyslogd/4412: #0: 0000000066cd15ab (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1a9/0x1e0 fs/file.c:766 2 locks held by getty/4502: #0: 000000003e20af5c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000001e8fd1b4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4503: #0: 000000003d397c17 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 00000000fc2cb72c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4504: #0: 000000008ce36f85 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 00000000064ab1ca (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4505: #0: 0000000059e9aa64 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 00000000a4c14d39 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4506: #0: 00000000127cf3e1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 0000000054073ce4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4507: #0: 0000000025bf8b7d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 0000000013c1503c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4508: #0: 00000000dbb6d38d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000001cfb776a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 1 lock held by syz-executor5/22469: #0: 000000002abbe807 (&lo->lo_ctl_mutex/1){+.+.}, at: lo_ioctl+0x8d/0x2130 drivers/block/loop.c:1391 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 893 Comm: khungtaskd Not tainted 4.17.0-rc6+ #63 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.4+0x19/0xce lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0x151/0x192 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline] check_hung_task kernel/hung_task.c:132 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:190 [inline] watchdog+0xc10/0xf60 kernel/hung_task.c:249 kthread+0x345/0x410 kernel/kthread.c:240 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.17.0-rc6+ #63 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:debug_lockdep_rcu_enabled+0x53/0x90 kernel/rcu/update.c:300 RSP: 0018:ffff8801dae075d8 EFLAGS: 00000a02 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000010003ddb1 RDX: 1ffffffff1213a40 RSI: 0000000000000000 RDI: ffffffff8909d200 RBP: ffff8801dae075d8 R08: ffffffff88c75dc0 R09: dffffc0000000000 R10: ffff8801d9a18098 R11: 0000000000006a0b R12: 0000000000000001 R13: 0000000000006a0b R14: ffff8801dae07780 R15: ffffffff88c09000 FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001b6afd000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_unlock include/linux/rcupdate.h:684 [inline] rebalance_domains+0x34d/0xd80 kernel/sched/fair.c:9248 _nohz_idle_balance+0x5ff/0x7e0 kernel/sched/fair.c:9607 nohz_idle_balance kernel/sched/fair.c:9655 [inline] run_rebalance_domains+0x2be/0x4a0 kernel/sched/fair.c:9838 __do_softirq+0x2e0/0xaf5 kernel/softirq.c:285 invoke_softirq kernel/softirq.c:365 [inline] irq_exit+0x1d1/0x200 kernel/softirq.c:405 scheduler_ipi+0x52b/0xa30 kernel/sched/core.c:1781 smp_reschedule_interrupt+0xed/0x660 arch/x86/kernel/smp.c:277 reschedule_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:887 RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54 RSP: 0018:ffffffff88c07bc0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02 RAX: dffffc0000000000 RBX: 1ffffffff1180f7b RCX: 0000000000000000 RDX: 1ffffffff11a31b0 RSI: 0000000000000001 RDI: ffffffff88d18d80 RBP: ffffffff88c07bc0 R08: ffffed003b5c46d3 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff88c07c78 R14: ffffffff897bf9e0 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline] default_idle+0xc2/0x440 arch/x86/kernel/process.c:500 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:491 default_idle_call+0x6d/0x90 kernel/sched/idle.c:93 cpuidle_idle_call kernel/sched/idle.c:153 [inline] do_idle+0x395/0x560 kernel/sched/idle.c:262 cpu_startup_entry+0x104/0x120 kernel/sched/idle.c:368 rest_init+0xe1/0xe4 init/main.c:441 start_kernel+0x906/0x92d init/main.c:737 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:453 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:434 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:242 Code: 03 38 d0 7c 04 84 d2 75 4c 8b 15 e9 41 18 08 85 d2 74 3e 48 c7 c7 00 d2 09 89 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1c