binder_alloc: binder_alloc_mmap_handler: 14475 20000000-20002000 already mapped failed -16 INFO: task syz-executor3:14446 blocked for more than 120 seconds. Not tainted 4.15.0-rc6-next-20180105+ #89 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D27600 14446 3709 0x00000004 Call Trace: context_switch kernel/sched/core.c:2800 [inline] __schedule+0x850/0x1e10 kernel/sched/core.c:3376 schedule+0x7c/0x1a0 kernel/sched/core.c:3435 io_schedule+0x1c/0x70 kernel/sched/core.c:5043 wait_on_page_bit_common mm/filemap.c:1099 [inline] wait_on_page_bit mm/filemap.c:1132 [inline] wait_on_page_locked include/linux/pagemap.h:530 [inline] __lock_page_or_retry+0x725/0x900 mm/filemap.c:1310 lock_page_or_retry include/linux/pagemap.h:510 [inline] filemap_fault+0xadf/0x1900 mm/filemap.c:2532 __do_fault+0x8a/0x1d0 mm/memory.c:3224 do_read_fault mm/memory.c:3634 [inline] do_fault mm/memory.c:3734 [inline] handle_pte_fault mm/memory.c:3965 [inline] __handle_mm_fault+0x1c96/0x3210 mm/memory.c:4089 handle_mm_fault+0x305/0x840 mm/memory.c:4126 faultin_page mm/gup.c:502 [inline] __get_user_pages+0x37e/0x1140 mm/gup.c:699 populate_vma_page_range+0x18e/0x230 mm/gup.c:1200 __mm_populate+0x204/0x350 mm/gup.c:1250 mm_populate include/linux/mm.h:2233 [inline] vm_mmap_pgoff+0x1e1/0x1f0 mm/util.c:338 SYSC_mmap_pgoff mm/mmap.c:1544 [inline] SyS_mmap_pgoff+0x423/0x580 mm/mmap.c:1502 SYSC_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:91 entry_SYSCALL_64_fastpath+0x23/0x9a RIP: 0033:0x452ac9 RSP: 002b:00007fafc84b9c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 0000000000000003 RSI: 0000000000001000 RDI: 0000000020e5b000 RBP: 00000000000003a3 R08: 0000000000000014 R09: 0000000000000000 R10: 0000000000002011 R11: 0000000000000212 R12: 00000000006f37e8 R13: 00000000ffffffff R14: 00007fafc84ba6d4 R15: 0000000000000000 Showing all locks held in the system: 2 locks held by khungtaskd/739: #0: (rcu_read_lock){....}, at: [<00000000013c8e01>] check_hung_uninterruptible_tasks kernel/hung_task.c:175 [inline] #0: (rcu_read_lock){....}, at: [<00000000013c8e01>] watchdog+0x122/0xab0 kernel/hung_task.c:249 #1: (tasklist_lock){.+.+}, at: [<00000000d61ce846>] debug_show_all_locks+0x70/0x280 kernel/locking/lockdep.c:4464 1 lock held by rsyslogd/3327: #0: (&f->f_pos_lock){+.+.}, at: [<000000003d3afffb>] __fdget_pos+0xa2/0xc0 fs/file.c:765 2 locks held by getty/3449: #0: (&tty->ldisc_sem){++++}, at: [<00000000b5ece02e>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<0000000054935f52>] n_tty_read+0x1ec/0x1660 drivers/tty/n_tty.c:2131 2 locks held by getty/3450: #0: (&tty->ldisc_sem){++++}, at: [<00000000b5ece02e>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<0000000054935f52>] n_tty_read+0x1ec/0x1660 drivers/tty/n_tty.c:2131 2 locks held by getty/3451: #0: (&tty->ldisc_sem){++++}, at: [<00000000b5ece02e>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<0000000054935f52>] n_tty_read+0x1ec/0x1660 drivers/tty/n_tty.c:2131 2 locks held by getty/3452: #0: (&tty->ldisc_sem){++++}, at: [<00000000b5ece02e>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<0000000054935f52>] n_tty_read+0x1ec/0x1660 drivers/tty/n_tty.c:2131 2 locks held by getty/3453: #0: (&tty->ldisc_sem){++++}, at: [<00000000b5ece02e>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<0000000054935f52>] n_tty_read+0x1ec/0x1660 drivers/tty/n_tty.c:2131 2 locks held by getty/3454: #0: (&tty->ldisc_sem){++++}, at: [<00000000b5ece02e>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<0000000054935f52>] n_tty_read+0x1ec/0x1660 drivers/tty/n_tty.c:2131 2 locks held by getty/14493: #0: (&tty->ldisc_sem){++++}, at: [<00000000b5ece02e>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<0000000054935f52>] n_tty_read+0x1ec/0x1660 drivers/tty/n_tty.c:2131 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 739 Comm: khungtaskd Not tainted 4.15.0-rc6-next-20180105+ #89 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x137/0x198 lib/dump_stack.c:53 nmi_cpu_backtrace+0x1d2/0x210 lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0x122/0x180 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+0x73d/0xab0 kernel/hung_task.c:249 kthread+0x33c/0x400 kernel/kthread.c:238 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:524 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-rc6-next-20180105+ #89 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:prandom_u32_state+0x3d/0x180 lib/random32.c:63 RSP: 0018:ffff8801db407c00 EFLAGS: 00000046 RAX: 0000000000000003 RBX: ffffffff85e2cbb8 RCX: ffffffff821bb3d3 RDX: 0000000000000000 RSI: ffff8801db42c258 RDI: ffff8801db4290e0 RBP: ffff8801db407c20 R08: ffffffff81438e97 R09: 000000000000000c R10: ffff8801db407bf0 R11: 0000000000000001 R12: ffffffff85e2c340 R13: ffff8801db4290e0 R14: 0000000000000000 R15: ffffffff85e2cbb8 FS: 0000000000000000(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000c2f000 CR3: 0000000005e22004 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: prandom_u32+0x24/0x30 lib/random32.c:84 __lock_pin_lock kernel/locking/lockdep.c:3763 [inline] lock_pin_lock+0x200/0x360 kernel/locking/lockdep.c:3972 rq_pin_lock kernel/sched/sched.h:932 [inline] rq_lock_irqsave kernel/sched/sched.h:1751 [inline] update_blocked_averages+0x71/0x1730 kernel/sched/fair.c:7352 rebalance_domains+0xde/0xaf0 kernel/sched/fair.c:9121 run_rebalance_domains+0x2c8/0x560 kernel/sched/fair.c:9382 __do_softirq+0x23f/0x99f kernel/softirq.c:285 invoke_softirq kernel/softirq.c:365 [inline] irq_exit+0x1cc/0x200 kernel/softirq.c:405 scheduler_ipi+0x2c5/0x450 kernel/sched/core.c:1804 smp_reschedule_interrupt+0x67/0x470 arch/x86/kernel/smp.c:277 reschedule_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:944 RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54 RSP: 0018:ffffffff85e07d00 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02 RAX: dffffc0000000000 RBX: ffffffff85e2c340 RCX: 0000000000000000 RDX: 1ffffffff0bd90a0 RSI: 0000000000000001 RDI: ffffffff85ec8500 RBP: ffffffff85e07d00 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff86638fe0 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:93 [inline] default_idle+0x52/0x310 arch/x86/kernel/process.c:354 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:345 default_idle_call+0x36/0x90 kernel/sched/idle.c:98 cpuidle_idle_call kernel/sched/idle.c:156 [inline] do_idle+0x24a/0x3b0 kernel/sched/idle.c:246 cpu_startup_entry+0xbe/0xd0 kernel/sched/idle.c:351 rest_init+0xed/0xf0 init/main.c:436 start_kernel+0x77e/0x7a4 init/main.c:716 x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:378 x86_64_start_kernel+0x77/0x7a arch/x86/kernel/head64.c:359 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:237 Code: ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 2d 01 00 00 <41> 8b 55 00 49 8d 7d 04 48 b8 00 00 00 00 00 fc ff df 89 d3 c1