btrfs balance ssd kernel bug

ov 02 12:56:48 homeserver.mooo.com kernel: BTRFS info (device sda2): relocating block group 20971520 flags 4
Nov 02 12:56:52 homeserver.mooo.com kernel: ------------[ cut here ]------------
Nov 02 12:56:52 homeserver.mooo.com kernel: kernel BUG at fs/btrfs/extent-tree.c:1833!
Nov 02 12:56:52 homeserver.mooo.com kernel: invalid opcode: 0000 [#1] PREEMPT SMP 
Nov 02 12:56:52 homeserver.mooo.com kernel: Modules linked in: nfsd auth_rpcgss oid_registry nfs_acl iptable_filter it87 hwmon_vid nls_iso8859_1 nls_cp437 vfat arc4 iTCO_wdt fat iTCO_vendor_support intel_rapl iosf_mbi x86_pkg_temp_thermal evdev intel_powerclamp coretemp mac_hid iwldv
Nov 02 12:56:52 homeserver.mooo.com kernel:  ehci_hcd scsi_transport_sas usbcore usb_common scsi_mod i8042 serio
Nov 02 12:56:52 homeserver.mooo.com kernel: CPU: 2 PID: 18067 Comm: kworker/u8:8 Not tainted 4.2.4-1-ARCH #1
Nov 02 12:56:52 homeserver.mooo.com kernel: Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./H77N-WIFI, BIOS F2 08/23/2012
Nov 02 12:56:52 homeserver.mooo.com kernel: Workqueue: btrfs-extent-refs btrfs_extent_refs_helper [btrfs]
Nov 02 12:56:52 homeserver.mooo.com kernel: task: ffff880010a1ee00 ti: ffff880126238000 task.ti: ffff880126238000
Nov 02 12:56:52 homeserver.mooo.com kernel: RIP: 0010:[<ffffffffa0202847>]  [<ffffffffa0202847>] insert_inline_extent_backref+0xe7/0xf0 [btrfs]
Nov 02 12:56:52 homeserver.mooo.com kernel: RSP: 0018:ffff88012623bac8  EFLAGS: 00010293
Nov 02 12:56:52 homeserver.mooo.com kernel: RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
Nov 02 12:56:52 homeserver.mooo.com kernel: RDX: ffff880000000000 RSI: 0000000000000001 RDI: 0000000000000000
Nov 02 12:56:52 homeserver.mooo.com kernel: RBP: ffff88012623bb48 R08: 0000000000004000 R09: ffff88012623b9c0
Nov 02 12:56:52 homeserver.mooo.com kernel: R10: 0000000000000000 R11: 0000000000000002 R12: ffff8802145ea800
Nov 02 12:56:52 homeserver.mooo.com kernel: R13: ffff8801dc148b40 R14: 0000000000000000 R15: 0000000000000000
Nov 02 12:56:52 homeserver.mooo.com kernel: FS:  0000000000000000(0000) GS:ffff88021f300000(0000) knlGS:0000000000000000
Nov 02 12:56:52 homeserver.mooo.com kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Nov 02 12:56:52 homeserver.mooo.com kernel: CR2: 0000000003208018 CR3: 00000001cb0f9000 CR4: 00000000000406e0
Nov 02 12:56:52 homeserver.mooo.com kernel: Stack:
Nov 02 12:56:52 homeserver.mooo.com kernel:  0000000000000000 0000000000000101 0000000000000000 0000000000000000
Nov 02 12:56:52 homeserver.mooo.com kernel:  ffff880200000001 ffffffff811b3b9a ffff88012623bb28 ffffffffa01f5f4a
Nov 02 12:56:52 homeserver.mooo.com kernel:  0000000000002d7f 00000000acd85304 ffff8802145e9000 0000000000000000
Nov 02 12:56:52 homeserver.mooo.com kernel: Call Trace:
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffff811b3b9a>] ? kmem_cache_alloc+0x1da/0x200
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffffa01f5f4a>] ? btrfs_alloc_path+0x1a/0x20 [btrfs]
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffffa02033f9>] __btrfs_inc_extent_ref.isra.22+0xa9/0x270 [btrfs]
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffffa0208c5b>] __btrfs_run_delayed_refs+0xcab/0x10e0 [btrfs]
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffffa021f5ee>] ? join_transaction.isra.3+0x10e/0x410 [btrfs]
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffffa020bd13>] btrfs_run_delayed_refs.part.39+0x73/0x250 [btrfs]
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffffa020bf8e>] delayed_ref_async_start+0x7e/0x90 [btrfs]
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffffa0252687>] btrfs_scrubparity_helper+0x77/0x2e0 [btrfs]
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffffa025292e>] btrfs_extent_refs_helper+0xe/0x10 [btrfs]
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffff8108c5cb>] process_one_work+0x14b/0x440
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffff8108c908>] worker_thread+0x48/0x4a0
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffff8108c8c0>] ? process_one_work+0x440/0x440
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffff8108c8c0>] ? process_one_work+0x440/0x440
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffff81092568>] kthread+0xd8/0xf0
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffff81092490>] ? kthread_worker_fn+0x170/0x170
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffff815764df>] ret_from_fork+0x3f/0x70
Nov 02 12:56:52 homeserver.mooo.com kernel:  [<ffffffff81092490>] ? kthread_worker_fn+0x170/0x170
Nov 02 12:56:52 homeserver.mooo.com kernel: Code: 10 49 89 d9 48 8b 55 c0 4c 89 7c 24 10 4c 89 f1 4c 89 ee 4c 89 e7 89 44 24 08 48 8b 45 20 48 89 04 24 e8 fd f9 ff ff 31 c0 eb ac <0f> 0b e8 32 1e e7 e0 66 90 66 66 66 66 90 55 48 89 e5 53 48 89 
Nov 02 12:56:52 homeserver.mooo.com kernel: RIP  [<ffffffffa0202847>] insert_inline_extent_backref+0xe7/0xf0 [btrfs]
Nov 02 12:56:52 homeserver.mooo.com kernel:  RSP <ffff88012623bac8>
Nov 02 12:56:52 homeserver.mooo.com kernel: ---[ end trace d10c387b255308b2 ]---
Nov 02 12:56:52 homeserver.mooo.com kernel: note: kworker/u8:8[18067] exited with preempt_count 1
Nov 02 12:56:52 homeserver.mooo.com kernel: BUG: unable to handle kernel paging request at ffffffffffffffd8
Nov 02 12:56:52 homeserver.mooo.com kernel: IP: [<ffffffff81092a40>] kthread_data+0x10/0x20