So far no problems here, I have been using bcache since october. But I'm 
currently running kernel 3.14.3, so I might be at risk?

Is this issue there since a specific kernel version?

On 05/12/2014 01:53 PM, Mariusz Paradowski wrote:

Confirmed on kernel 3.14.3 from kernel.org:

May 11 17:43:16 x kernel: ------------[ cut here ]------------
May 11 17:43:16 x kernel: WARNING: CPU: 3 PID: 376101 at 
drivers/md/bcache/btree.c:1979 0xffffffffa00d65ab()
May 11 17:43:16 x kernel: bcache: btree split failed
May 11 17:43:16 x kernel: Modules linked in: e1000e ptp pps_core 
microcode firmware_class unix mpt2sas raid_class scsi_transport_sas 
bcache fuse hid_generic usbhid hid xhci_hcd ehci_pci ehci_hcd usbcore 
usb_common msr cpuid
May 11 17:43:16 x kernel: CPU: 3 PID: 376101 Comm: kworker/3:2 Not 
tainted 3.14.3 #1
May 11 17:43:16 x kernel: Hardware name:                  /DH87MC, 
BIOS MCH8710H.86A.0047.2013.0606.1508 06/06/2013
May 11 17:43:16 x kernel: Workqueue: events 0xffffffffa00e8fa0
May 11 17:43:16 x kernel: 0000000000000009 ffffffff81303a63 
ffff88040c24b988 ffffffff8104c2fd
May 11 17:43:16 x kernel: ffff8801056f2400 ffff88040c24b9d8 
ffff88040c24ba00 ffff88040c24bd10
May 11 17:43:16 x kernel: ffffffffffffffe4 ffffffff8104c367 
ffffffffa00ea33b ffff880400000018
May 11 17:43:16 x kernel: Call Trace:
May 11 17:43:16 x kernel: [<ffffffff81303a63>] ? 0xffffffff81303a63
May 11 17:43:16 x kernel: [<ffffffff8104c2fd>] ? 0xffffffff8104c2fd
May 11 17:43:16 x kernel: [<ffffffff8104c367>] ? 0xffffffff8104c367
May 11 17:43:16 x kernel: [<ffffffffa00d65ab>] ? 0xffffffffa00d65ab
May 11 17:43:16 x kernel: [<ffffffff810752c3>] ? 0xffffffff810752c3
May 11 17:43:16 x kernel: [<ffffffffa00d669d>] ? 0xffffffffa00d669d
May 11 17:43:16 x kernel: [<ffffffffa00d7520>] ? 0xffffffffa00d7520
May 11 17:43:16 x kernel: [<ffffffffa00d753b>] ? 0xffffffffa00d753b
May 11 17:43:16 x kernel: [<ffffffffa00d4bce>] ? 0xffffffffa00d4bce
May 11 17:43:16 x kernel: [<ffffffffa00d12a9>] ? 0xffffffffa00d12a9
May 11 17:43:16 x kernel: [<ffffffffa00d4975>] ? 0xffffffffa00d4975
May 11 17:43:16 x kernel: [<ffffffffa00d7520>] ? 0xffffffffa00d7520
May 11 17:43:16 x kernel: [<ffffffffa00d4c65>] ? 0xffffffffa00d4c65
May 11 17:43:16 x kernel: [<ffffffff811bc9c4>] ? 0xffffffff811bc9c4
May 11 17:43:16 x kernel: [<ffffffffa00d7d2c>] ? 0xffffffffa00d7d2c
May 11 17:43:16 x kernel: [<ffffffffa00d7520>] ? 0xffffffffa00d7520
May 11 17:43:16 x kernel: [<ffffffffa00d7e98>] ? 0xffffffffa00d7e98
May 11 17:43:16 x kernel: [<ffffffff81079110>] ? 0xffffffff81079110
May 11 17:43:16 x kernel: [<ffffffffa00e914a>] ? 0xffffffffa00e914a
May 11 17:43:16 x kernel: [<ffffffff81054cb1>] ? 0xffffffff81054cb1
May 11 17:43:16 x kernel: [<ffffffff81054b9d>] ? 0xffffffff81054b9d
May 11 17:43:16 x kernel: [<ffffffff81054eaf>] ? 0xffffffff81054eaf
May 11 17:43:16 x kernel: [<ffffffff8105e9a1>] ? 0xffffffff8105e9a1
May 11 17:43:16 x kernel: [<ffffffff8105c9f3>] ? 0xffffffff8105c9f3
May 11 17:43:16 x kernel: [<ffffffff8105f566>] ? 0xffffffff8105f566
May 11 17:43:16 x kernel: [<ffffffff8105f450>] ? 0xffffffff8105f450
May 11 17:43:16 x kernel: [<ffffffff81064621>] ? 0xffffffff81064621
May 11 17:43:16 x kernel: [<ffffffff81064560>] ? 0xffffffff81064560
May 11 17:43:16 x kernel: [<ffffffff8130853c>] ? 0xffffffff8130853c
May 11 17:43:16 x kernel: [<ffffffff81064560>] ? 0xffffffff81064560
May 11 17:43:16 x kernel: ---[ end trace 4fa5a49292304c0d ]---
May 11 17:43:16 x kernel: bcache: bch_btree_insert() error -12