binder: 13194:13198 ioctl 40046207 0 returned -16
binder: 13194:13219 unknown command 536871168
binder: 13194:13219 ioctl c0306201 20008fd0 returned -22
binder: 13194:13219 unknown command 549648
binder: 13194:13219 ioctl c0306201 2000bfd0 returned -22
INFO: task syz-executor3:13144 blocked for more than 120 seconds.
      Not tainted 4.9.111-g03c70fe #57
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3   D28928 13144   3876 0x00000004
 ffff8801a0fd3000 ffff8801b14def40 ffff8801c62c6a00 ffff8801cb09b000
 ffff8801db221c18 ffff880195b578f0 ffffffff839e7ded 0000000041b58ab3
 ffffffff843c3108 ffffffff81236170 0000000000000000 ffff8801db2224e8
Call Trace:
 [<ffffffff839e93ef>] schedule+0x7f/0x1b0 kernel/sched/core.c:3557
 [<ffffffff839f5801>] schedule_timeout+0x861/0xf70 kernel/time/timer.c:1768
 [<ffffffff839e75ca>] io_schedule_timeout+0x1ba/0x390 kernel/sched/core.c:5180
 [<ffffffff839ea839>] io_schedule include/linux/sched.h:460 [inline]
 [<ffffffff839ea839>] bit_wait_io+0x19/0xa0 kernel/sched/wait.c:582
 [<ffffffff839ea0de>] __wait_on_bit_lock+0xce/0x1c0 kernel/sched/wait.c:421
 [<ffffffff814345ef>] __lock_page+0xff/0x160 mm/filemap.c:934
 [<ffffffff8146b828>] lock_page include/linux/pagemap.h:454 [inline]
 [<ffffffff8146b828>] truncate_inode_pages_range+0x818/0x1290 mm/truncate.c:373
 [<ffffffff8163295d>] blkdev_fallocate+0x21d/0x440 fs/block_dev.c:1817
 [<ffffffff81568789>] vfs_fallocate+0x359/0x600 fs/open.c:329
 [<ffffffff8156b693>] SYSC_fallocate fs/open.c:352 [inline]
 [<ffffffff8156b693>] SyS_fallocate+0x53/0x90 fs/open.c:346
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839f8cd3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb

Showing all locks held in the system:
2 locks held by khungtaskd/519:
 #0:  (rcu_read_lock){......}, at: [<ffffffff813666fc>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff813666fc>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff81425d87>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
2 locks held by getty/3773:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff839f6e92>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff8211e602>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2133
1 lock held by syz-executor3/13144:
 #0:  (sb_writers){.+.+.+}, at: [<ffffffff8156872b>] sb_start_write include/linux/fs.h:1573 [inline]
 #0:  (sb_writers){.+.+.+}, at: [<ffffffff8156872b>] vfs_fallocate+0x2fb/0x600 fs/open.c:328

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 519 Comm: khungtaskd Not tainted 4.9.111-g03c70fe #57
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8447d08 ffffffff81eb2729 0000000000000000 0000000000000001
 0000000000000001 0000000000000001 ffffffff810b9af0 ffff8801d8447d40
 ffffffff81ebda27 0000000000000001 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81eb2729>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb2729>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81ebda27>] nmi_cpu_backtrace.cold.2+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81ebd9ba>] nmi_trigger_cpumask_backtrace+0x12a/0x14f lib/nmi_backtrace.c:60
 [<ffffffff810b9bf4>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff81366c94>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff81366c94>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff81366c94>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff81366c94>] watchdog+0x6b4/0xa20 kernel/hung_task.c:239
 [<ffffffff8119d05d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff839f8e9c>] 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 skipped: idling at pc 0xffffffff839f78f6