kvm [14533]: vcpu0, guest rIP: 0x9118 Hyper-V uhandled wrmsr: 0x40000089 data 0xbcd900de
INFO: rcu_sched detected stalls on CPUs/tasks:
	1-...: (0 ticks this GP) idle=7ec/0/0 softirq=44292/44292 fqs=0 
	(detected by 0, t=125002 jiffies, g=23790, c=23789, q=41)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff84d5f486
rcu_sched kthread starved for 125002 jiffies! g23790 c23789 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x1
rcu_sched       S22288     8      2 0x00000000
Call Trace:
 context_switch kernel/sched/core.c:2771 [inline]
 __schedule+0x8e8/0x2070 kernel/sched/core.c:3332
 schedule+0x108/0x440 kernel/sched/core.c:3391
 schedule_timeout+0x150/0x250 kernel/time/timer.c:1711
 rcu_gp_kthread+0xa34/0x1a50 kernel/rcu/tree.c:2242
 kthread+0x35e/0x430 kernel/kthread.c:231
 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:425
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 13045 Comm: blkid Not tainted 4.13.0-rc5+ #40
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d4d427c0 task.stack: ffff8801cdd18000
RIP: 0010:create_empty_buffers+0xeb/0x7b0 fs/buffer.c:1581
RSP: 0018:ffff8801cdd1f060 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000000f
RDX: 0000000000000000 RSI: 0000000000008000 RDI: ffffea00067fbd80
RBP: ffff8801cdd1f268 R08: 0000000000000001 R09: 1ffff10039ba3dc6
R10: ffff8801cdd1edf8 R11: 0000000000000000 R12: ffffea00067fbd80
R13: 0000000000000000 R14: ffff8801cdd1f240 R15: dffffc0000000000
FS:  00007ff3d2dbb740(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c439bed010 CR3: 00000001ce60e000 CR4: 00000000001406f0
Call Trace:
 create_page_buffers+0x1ed/0x290 fs/buffer.c:1696
 block_read_full_page+0xe9/0x950 fs/buffer.c:2285
 blkdev_readpage+0x1c/0x20 fs/block_dev.c:583
 do_generic_file_read mm/filemap.c:2071 [inline]
 generic_file_read_iter+0x1277/0x26b0 mm/filemap.c:2202
 blkdev_read_iter+0x105/0x170 fs/block_dev.c:1917
 call_read_iter include/linux/fs.h:1737 [inline]
 new_sync_read fs/read_write.c:400 [inline]
 __vfs_read+0x6a7/0xa00 fs/read_write.c:412
 vfs_read+0x11e/0x350 fs/read_write.c:433
 SYSC_read fs/read_write.c:549 [inline]
 SyS_read+0xef/0x220 fs/read_write.c:542
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x7ff3d26c2310
RSP: 002b:00007ffc4f0ea458 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff3d26c2310
RDX: 0000000000000400 RSI: 0000000001b70c58 RDI: 0000000000000003
RBP: 0000000000000086 R08: 0000000000000028 R09: 0000000000168000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001b70c30
R13: 000000000001ffb1 R14: 0000000000000000 R15: 0000000000000004
Code: 4c 89 ee ba 01 00 00 00 4c 89 e7 e8 a0 e3 ff ff 48 89 85 18 fe ff ff 49 89 c5 eb 03 49 89 c5 e8 cc 5d b7 ff 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 0f 85 44 06 00 00 49 8d 7d 08 49 09 5d 00 48 89 
RIP: create_empty_buffers+0xeb/0x7b0 fs/buffer.c:1581 RSP: ffff8801cdd1f060
---[ end trace 165dd748a67d7bd2 ]---