Key type ceph registered
libceph: loaded (mon/osd proto 15/24, osdmap 5/6 5/6)
ceph: loaded (mds proto 32)
rbd: loaded rbd (rados block device)
libceph: client0 fsid 881c77d5-8762-4da6-9563-a1e26ed27ded
libceph: mon0 46.183.24.153:6789 session established
libceph: client0 fsid 881c77d5-8762-4da6-9563-a1e26ed27ded
libceph: mon0 46.183.24.151:6789 session established
 rbd1: unknown partition table
rbd: rbd1: added with size 0x40000000
 rbd2: unknown partition table
rbd: rbd2: added with size 0x200000000
EXT4-fs (rbd1): recovery complete
EXT4-fs (rbd1): mounted filesystem with ordered data mode. Opts: (null)
EXT4-fs (rbd2): recovery complete
EXT4-fs (rbd2): mounted filesystem with ordered data mode. Opts: (null)
device fsid 9b7e102c-99d0-4abe-a778-0f1e85eff58b devid 1 transid 4 /dev/rbd2
btrfs: disk space caching is enabled
btrfs: no dev_stats entry found for device /dev/rbd2 (devid 1) (OK on first mount after mkfs)
------------[ cut here ]------------
kernel BUG at fs/bio.c:1503!
invalid opcode: 0000 [#1] SMP 
CPU 0 
Modules linked in: rbd ceph libceph usbhid fuse sg uhci_hcd ehci_hcd serio_raw virtio_net virtio_balloon aesni_intel cryptd aes_x86_64 aes_generic usbcore usb_common unix

Pid: 1412, comm: btrfs-submit-1 Not tainted 3.5.1 #1  
RIP: 0010:[<ffffffff81124f49>]  [<ffffffff81124f49>] bio_split+0x219/0x230
RSP: 0018:ffff88004a1b5b50  EFLAGS: 00010212
RAX: ffff88004aab5000 RBX: ffff88004a122c00 RCX: 0000000180080008
RDX: ffff88004aab5000 RSI: ffff88004aab5000 RDI: 0000000000000287
RBP: ffff88004a1b5b60 R08: ffffea00012aad40 R09: ffffea00012aad50
R10: ffffea00012aad58 R11: ffffffff810ac220 R12: 0000000000000300
R13: 0000000000060000 R14: 0000000000000000 R15: ffff880049e65000
FS:  0000000000000000(0000) GS:ffff88004d000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007f63d3459000 CR3: 0000000049d46000 CR4: 00000000000406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process btrfs-submit-1 (pid: 1412, threadinfo ffff88004a1b4000, task ffff88004aa26180)
Stack:
 ffff88004a122c00 0000000000000000 ffff88004a1b5c40 ffffffffa010cc75
 ffff88004a1b5c10 ffff88004a122c00 0000000000000000 ffff88004a1b5da8
 0000000000000000 ffff88004a122c00 ffff88004a1b5bc0 ffffffff8127fd75
Call Trace:
 [<ffffffffa010cc75>] rbd_rq_fn+0x1c5/0x490 [rbd]
 [<ffffffff8127fd75>] ? blk_recount_segments+0x25/0x40
 [<ffffffff81278ec6>] __blk_run_queue+0x16/0x20
 [<ffffffff8127a320>] queue_unplugged+0x20/0x60
 [<ffffffff8127b24f>] blk_flush_plug_list+0x1af/0x210
 [<ffffffff8127b2c3>] blk_finish_plug+0x13/0x50
 [<ffffffff81222b68>] run_scheduled_bios+0x3c8/0x5d0
 [<ffffffff81222d80>] pending_bios_fn+0x10/0x20
 [<ffffffff8122b684>] worker_loop+0x164/0x5f0
 [<ffffffff8122b520>] ? btrfs_queue_worker+0x320/0x320
 [<ffffffff81057eb6>] kthread+0x96/0xa0
 [<ffffffff8152f3e4>] kernel_thread_helper+0x4/0x10
 [<ffffffff81057e20>] ? kthread_freezable_should_stop+0x60/0x60
 [<ffffffff8152f3e0>] ? gs_change+0x13/0x13
Code: 00 48 c7 40 50 c0 50 12 81 48 c7 80 c8 00 00 00 a0 50 12 81 48 89 58 58 48 8b 15 d3 56 73 00 48 89 90 d0 00 00 00 5b 41 5c c9 c3 <0f> 0b eb fe 0f 0b eb fe 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 
RIP  [<ffffffff81124f49>] bio_split+0x219/0x230
 RSP <ffff88004a1b5b50>
---[ end trace 822d71b45225770e ]---