binder: 11500:11528 transaction failed 29201/-22, size 1792207241-0 line 3005
INFO: task syz-executor7:11532 blocked for more than 120 seconds.
      Not tainted 4.4.120-gd63fdf6 #28
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor7   D ffff8801d3a2fa80 29816 11532   3854 0x00000004
 ffff8801d3a2fa80 0000000000000246 0000000000000296 0000000041b58ab3
 ffffffff83faa3cc ffffffff81220700 ffff8801db31fdb8 ffff8801db31fde0
 ffff8801db31f4d8 ffff8800b595e000 ffff8800b5498000 0000000000000000
Call Trace:
 [<ffffffff8376582a>] schedule+0x7a/0x1b0 kernel/sched/core.c:3353
 [<ffffffff81c96420>] blk_mq_freeze_queue_wait+0x120/0x240 block/blk-mq.c:95
 [<ffffffff81c9e99d>] blk_freeze_queue block/blk-mq.c:112 [inline]
 [<ffffffff81c9e99d>] blk_mq_freeze_queue+0x1d/0x20 block/blk-mq.c:121
 [<ffffffff8242049f>] loop_switch drivers/block/loop.c:610 [inline]
 [<ffffffff8242049f>] loop_change_fd drivers/block/loop.c:693 [inline]
 [<ffffffff8242049f>] lo_ioctl+0xfef/0x19c0 drivers/block/loop.c:1354
 [<ffffffff81cac59b>] __blkdev_driver_ioctl block/ioctl.c:288 [inline]
 [<ffffffff81cac59b>] blkdev_ioctl+0x4ab/0x1990 block/ioctl.c:584
 [<ffffffff815d1cee>] block_ioctl+0xde/0x120 fs/block_dev.c:1625
 [<ffffffff81559daa>] vfs_ioctl fs/ioctl.c:43 [inline]
 [<ffffffff81559daa>] do_vfs_ioctl+0x7aa/0xee0 fs/ioctl.c:607
 [<ffffffff8155a56f>] SYSC_ioctl fs/ioctl.c:622 [inline]
 [<ffffffff8155a56f>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:613
 [<ffffffff8377395f>] entry_SYSCALL_64_fastpath+0x1c/0x98
1 lock held by syz-executor7/11532:
 #0:  (&lo->lo_ctl_mutex/1){+.+.+.}, at: [<ffffffff8241f53f>] lo_ioctl+0x8f/0x19c0 drivers/block/loop.c:1348
Sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 485 Comm: khungtaskd Not tainted 4.4.120-gd63fdf6 #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800bac58000 task.stack: ffff8801d8d60000
RIP: 0010:[<ffffffff810c3e67>]  [<ffffffff810c3e67>] native_apic_mem_write arch/x86/include/asm/apic.h:94 [inline]
RIP: 0010:[<ffffffff810c3e67>]  [<ffffffff810c3e67>] __default_send_IPI_dest_field arch/x86/include/asm/ipi.h:119 [inline]
RIP: 0010:[<ffffffff810c3e67>]  [<ffffffff810c3e67>] _flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:61 [inline]
RIP: 0010:[<ffffffff810c3e67>]  [<ffffffff810c3e67>] flat_send_IPI_mask+0xf7/0x1a0 arch/x86/kernel/apic/apic_flat_64.c:69
RSP: 0018:ffff8801d8d67cb8  EFLAGS: 00000046
RAX: 0000000003000000 RBX: 0000000000000c00 RCX: 0000000000000000
RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fb300
RBP: ffff8801d8d67ce0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000246
R13: 0000000000000003 R14: ffffffff8426f420 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000619570 CR3: 00000000ac6aa000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff8426f420 ffffffff847efb00 fffffbfff08fda14 dffffc0000000000
 ffff8801db31bca0 ffff8801d8d67d00 ffffffff810b999b ffffffff839f63c0
 0000000000000003 ffff8801d8d67d60 ffffffff81d0eff4 ffffffff8141b053
Call Trace:
 [<ffffffff810b999b>] nmi_raise_cpu_backtrace+0x5b/0x70 arch/x86/kernel/apic/hw_nmi.c:33
 [<ffffffff81d0eff4>] nmi_trigger_all_cpu_backtrace+0x4a4/0x550 lib/nmi_backtrace.c:85
 [<ffffffff810b9a34>] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 [<ffffffff81368c9a>] trigger_all_cpu_backtrace include/linux/nmi.h:44 [inline]
 [<ffffffff81368c9a>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff81368c9a>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff81368c9a>] watchdog+0x6fa/0xae0 kernel/hung_task.c:238
 [<ffffffff81190788>] kthread+0x268/0x300 kernel/kthread.c:211
 [<ffffffff83773d85>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:506
Code: b3 5f ff f6 c4 10 75 e1 44 89 e8 c1 e0 18 89 04 25 10 b3 5f ff 44 89 fa 09 da 80 cf 04 41 83 ff 02 0f 44 d3 89 14 25 00 b3 5f ff <41> f7 c4 00 02 00 00 74 1a e8 6b 2f 17 00 4c 89 e7 57 9d 0f 1f 
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.4.120-gd63fdf6 #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d9b49800 task.stack: ffff8801d9b58000
RIP: 0010:[<ffffffff81238199>]  [<ffffffff81238199>] __lock_acquire+0xd89/0x4b50 kernel/locking/lockdep.c:3208
RSP: 0018:ffff8801d9b5fb40  EFLAGS: 00000006
RAX: 0000000000000000 RBX: ffff8801d9b4a0d0 RCX: 1ffff1003b36941e
RDX: 0000000000000000 RSI: ffff8801d9b4a0d0 RDI: 0000000000000000
RBP: ffff8801d9b5fce0 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 1ffff1003b36bf7a R12: 0000000000000022
R13: ffff8801d9b49800 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f992740b3c0 CR3: 00000000ac6aa000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801d9b49800 ffff8801d9b4a0d0 0000000000000024 ffff8801d9b49800
 ffffffff842bdbe0 0000000000000000 ffff8801d9b5fd18 ffffffff81237f6f
 00000000810b07fa 0000000000000046 ffffffff851609e0 ffff8801d9b4a0e8
Call Trace:
 [<ffffffff8123d7ce>] lock_acquire+0x15e/0x460 kernel/locking/lockdep.c:3592
 [<ffffffff83772ad6>] __raw_spin_lock include/linux/spinlock_api_smp.h:144 [inline]
 [<ffffffff83772ad6>] _raw_spin_lock+0x36/0x50 kernel/locking/spinlock.c:151
 [<ffffffff811f7787>] update_cpu_load_nohz+0xa7/0x140 kernel/sched/fair.c:4998
 [<ffffffff812d7808>] tick_nohz_restart_sched_tick kernel/time/tick-sched.c:716 [inline]
 [<ffffffff812d7808>] tick_nohz_idle_exit+0x1d8/0x3d0 kernel/time/tick-sched.c:946
 [<ffffffff81221815>] cpu_idle_loop kernel/sched/idle.c:267 [inline]
 [<ffffffff81221815>] cpu_startup_entry+0x2a5/0x8f0 kernel/sched/idle.c:301
 [<ffffffff810adc64>] start_secondary+0x304/0x3e0 arch/x86/kernel/smpboot.c:242
Code: 73 21 41 83 e6 60 0f 84 60 03 00 00 45 31 ff 41 b8 01 00 00 00 48 8b bc 24 88 00 00 00 45 89 e4 4d 31 fc 4c 89 a4 24 80 00 00 00 <48> 85 ff 74 27 44 89 44 24 50 4c 89 9c 24 88 00 00 00 e8 00 7f