Got:

	[21871.340400] INFO: task wcfs:27933 blocked for more than 120 seconds.
	[21871.340414]       Not tainted 4.18.0-1-amd64 #1 Debian 4.18.6-1
	[21871.340420] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
	[21871.340427] wcfs            D    0 27933  27889 0x00000004
	[21871.340440] Call Trace:
	[21871.340463]  ? __schedule+0x2b7/0x880
	[21871.340476]  schedule+0x28/0x80
	[21871.340490]  io_schedule+0x12/0x40
	[21871.340506]  __lock_page+0x115/0x160
	[21871.340521]  ? page_cache_tree_insert+0xe0/0xe0
	[21871.340535]  pagecache_get_page+0x185/0x2a0
	[21871.340549]  ? ilookup5+0x45/0x90
	[21871.340572]  fuse_dev_do_write+0x3c8/0xee0 [fuse]
	[21871.340587]  ? futex_wait_queue_me+0xd3/0x120
	[21871.340604]  fuse_dev_write+0x4e/0x80 [fuse]
	[21871.340622]  do_iter_readv_writev+0x145/0x1a0
	[21871.340632]  do_iter_write+0x80/0x190
	[21871.340642]  vfs_writev+0x98/0x110
	[21871.340657]  ? new_sync_write+0x104/0x160
	[21871.340668]  ? do_writev+0x5e/0xf0
	[21871.340676]  do_writev+0x5e/0xf0
	[21871.340685]  ? ksys_write+0x76/0xc0
	[21871.340699]  do_syscall_64+0x55/0x110
	[21871.340714]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
	[21871.340725] RIP: 0033:0x478b70
	[21871.340730] Code: Bad RIP value.
	[21871.340752] RSP: 002b:000000c000149938 EFLAGS: 00000216 ORIG_RAX: 0000000000000014
	[21871.340763] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000478b70
	[21871.340770] RDX: 0000000000000002 RSI: 000000c00009e020 RDI: 0000000000000008
	[21871.340777] RBP: 000000c000149988 R08: 0000000000000000 R09: 0000000000000000
	[21871.340784] R10: 0000000000000000 R11: 0000000000000216 R12: 0000000000000004
	[21871.340790] R13: 0000000000000055 R14: 000000000068877a R15: 0000000000000038