attempt to access beyond end of device
loop0: rw=0, want=18442984958116442984, limit=1036
attempt to access beyond end of device
loop0: rw=0, want=18442984958116442986, limit=1036
IPVS: stopping master sync thread 7265 ...
INFO: task syz-executor7:24429 blocked for more than 120 seconds.
      Not tainted 4.9.110-g00a0bcb #4
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor7   D26952 24429   7654 0x00000004
 ffff8801a0c74800 ffff8801ab9b6a00 ffff8801c1096f40 ffff8801c9fce000
 ffff8801db221c18 ffff88019eb178f0 ffffffff839e6ded 0000000041b58ab3
 ffffffff843c30c8 ffffffff81236160 00ff8801a0c750c0 ffff8801db2224e8
Call Trace:
 [<ffffffff839e83ef>] schedule+0x7f/0x1b0 kernel/sched/core.c:3557
 [<ffffffff839f4801>] schedule_timeout+0x861/0xf70 kernel/time/timer.c:1768
 [<ffffffff839e65ca>] io_schedule_timeout+0x1ba/0x390 kernel/sched/core.c:5180
 [<ffffffff839e9839>] io_schedule include/linux/sched.h:460 [inline]
 [<ffffffff839e9839>] bit_wait_io+0x19/0xa0 kernel/sched/wait.c:582
 [<ffffffff839e90de>] __wait_on_bit_lock+0xce/0x1c0 kernel/sched/wait.c:421
 [<ffffffff8143451f>] __lock_page+0xff/0x160 mm/filemap.c:934
 [<ffffffff8146b758>] lock_page include/linux/pagemap.h:454 [inline]
 [<ffffffff8146b758>] truncate_inode_pages_range+0x818/0x1290 mm/truncate.c:373
 [<ffffffff8163288d>] blkdev_fallocate+0x21d/0x440 fs/block_dev.c:1817
 [<ffffffff815686b9>] vfs_fallocate+0x359/0x600 fs/open.c:329
 [<ffffffff8156b5c3>] SYSC_fallocate fs/open.c:352 [inline]
 [<ffffffff8156b5c3>] SyS_fallocate+0x53/0x90 fs/open.c:346
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839f7cd3>] 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: [<ffffffff8136662c>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8136662c>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff81425cb7>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
1 lock held by rsyslogd/3680:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff815d803c>] __fdget_pos+0xac/0xd0 fs/file.c:781
2 locks held by getty/3776:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff839f5e92>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff8211e1e2>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2133
1 lock held by syz-executor7/24429:
 #0:  (sb_writers){.+.+.+}, at: [<ffffffff8156865b>] sb_start_write include/linux/fs.h:1573 [inline]
 #0:  (sb_writers){.+.+.+}, at: [<ffffffff8156865b>] vfs_fallocate+0x2fb/0x600 fs/open.c:328

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

NMI backtrace for cpu 1
CPU: 1 PID: 519 Comm: khungtaskd Not tainted 4.9.110-g00a0bcb #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8647d08 ffffffff81eb2329 0000000000000000 0000000000000001
 0000000000000001 0000000000000001 ffffffff810b9580 ffff8801d8647d40
 ffffffff81ebd627 0000000000000001 0000000000000000 0000000000000002
Call Trace:
 [<ffffffff81eb2329>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb2329>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81ebd627>] nmi_cpu_backtrace.cold.2+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81ebd5ba>] nmi_trigger_cpumask_backtrace+0x12a/0x14f lib/nmi_backtrace.c:60
 [<ffffffff810b9684>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff81366bc4>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff81366bc4>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff81366bc4>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff81366bc4>] watchdog+0x6b4/0xa20 kernel/hung_task.c:239
 [<ffffffff8119d04d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff839f7e9c>] 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
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.9.110-g00a0bcb #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffffffff84629800 task.stack: ffffffff84600000
RIP: 0010:[<ffffffff811ceaa1>] 
c [<ffffffff811ceaa1>] select_task_rq kernel/sched/core.c:1624 [inline]
RIP: 0010:[<ffffffff811ceaa1>] 
c [<ffffffff811ceaa1>] try_to_wake_up+0x411/0xec0 kernel/sched/core.c:2121
RSP: 0018:ffff8801db207c28  EFLAGS: 00000086
RAX: 0000000000000000 RBX: 1ffff1003b640f8d RCX: ffffffff84629800
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000046
RBP: ffff8801db207cf0 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffff8801d9a3983c
R13: ffff8801d9a3a010 R14: ffff8801d9a39800 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb3beb45000 CR3: 00000001c9687000 CR4: 00000000001606f0
DR0: 0000000020000000 DR1: 00000000200001c0 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Stack:
 ffff8801db207c68
c 0000000000000001
c ffffffff84629800
c ffff8801d9a39cdc
c
 0000000000000046
c 0000000000000286
c 00000000db207c98
c ffff880100000000
c
 0000000041b58ab3
c ffffffff843bbc51
c ffffffff811ce690
c ffffffff8462a0c8
c
Call Trace:
 [<ffffffff811cf560>] wake_up_process+0x10/0x20 kernel/sched/core.c:2205
 [<ffffffff81298785>] process_timeout+0x15/0x20 kernel/time/timer.c:1724
 [<ffffffff812988f3>] call_timer_fn+0x163/0x6e0 kernel/time/timer.c:1319
 [<ffffffff8129fa57>] expire_timers kernel/time/timer.c:1359 [inline]
 [<ffffffff8129fa57>] __run_timers kernel/time/timer.c:1658 [inline]
 [<ffffffff8129fa57>] run_timer_softirq+0x1047/0x1590 kernel/time/timer.c:1684
 [<ffffffff839fe8bb>] __do_softirq+0x20b/0x937 kernel/softirq.c:284
 [<ffffffff8114b227>] invoke_softirq kernel/softirq.c:364 [inline]
 [<ffffffff8114b227>] irq_exit+0x147/0x190 kernel/softirq.c:405
 [<ffffffff839fd4a1>] exiting_irq arch/x86/include/asm/apic.h:659 [inline]
 [<ffffffff839fd4a1>] smp_apic_timer_interrupt+0x81/0xa0 arch/x86/kernel/apic/apic.c:960
 [<ffffffff839f9630>] apic_timer_interrupt+0xa0/0xb0 arch/x86/entry/entry_64.S:648
 <EOI> 
d [<ffffffff839f68f6>] ? native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:53
 [<ffffffff839f5f35>] arch_safe_halt arch/x86/include/asm/paravirt.h:104 [inline]
 [<ffffffff839f5f35>] default_idle+0x55/0x360 arch/x86/kernel/process.c:437
 [<ffffffff8106ad10>] arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:428
 [<ffffffff839f6d55>] default_idle_call+0x45/0x60 kernel/sched/idle.c:97
 [<ffffffff81223185>] cpuidle_idle_call kernel/sched/idle.c:155 [inline]
 [<ffffffff81223185>] cpu_idle_loop kernel/sched/idle.c:248 [inline]
 [<ffffffff81223185>] cpu_startup_entry+0x2b5/0x380 kernel/sched/idle.c:303
 [<ffffffff839e3bbc>] rest_init+0x183/0x189 init/main.c:409
 [<ffffffff84c97943>] start_kernel+0x67e/0x6b2 init/main.c:664
 [<ffffffff84c9629a>] x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:196
 [<ffffffff84c963db>] x86_64_start_kernel+0x13f/0x162 arch/x86/kernel/head64.c:177
Code: 
c03 
c80 
c3c 
c11 
c00 
c0f 
c85 
ced 
c09 
c00 
c00 
c48 
c8b 
c40 
c40 
cba 
c10 
c00 
c00 
c00 
c44 
c89 
cfe 
c4c 
c89 
cf7 
c8b 
c8d 
c6c 
cff 
cff 
cff 
ce8 
c65 
c29 
c83 
c02 
c89 
c85 
c70 
cff 
cff 
cff 
c<8b> 
c85 
c70 
cff 
cff 
cff 
c49 
c0f 
ca3 
c86 
cd8 
c03 
c00 
c00 
c0f 
c83 
cf2 
c04 
c00 
c00 
c48 
c