Ceph » rbd

 Assertion failure in rbd_img_obj_callback() at line 2143:

   rbd_assert(more ^ (which == img_request->obj_request_count));

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 kernel BUG at /build/buildd/linux-3.11.0/drivers/block/rbd.c:2143!
 invalid opcode: 0000 [#1] SMP 
 Modules linked in: vxlan ip_tunnel cls_u32 ebt_mark ebtable_filter cls_fw ebt_arp ebt_ip vhost_net vhost macvtap macvlan rbd libceph sch_cbq ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables x_tables nbd 8021q garp mrp vesafb coretemp kvm_intel bridge stp llc kvm joydev hid_generic gpio_ich dcdbas dm_multipath scsi_dh microcode psmouse serio_raw usbhid hid lpc_ich i7core_edac edac_core wmi mac_hid acpi_power_meter bonding lp parport btrfs xor zlib_deflate raid6_pq libcrc32c ses enclosure megaraid_sas bnx2
 CPU: 6 PID: 6340 Comm: kworker/6:4 Tainted: G          I  3.11.0-20-generic #35-Ubuntu
 Hardware name: Dell Inc. PowerEdge R610/0YF3T8, BIOS 6.4.0 07/23/2013
 Workqueue: ceph-msgr con_work [libceph]
 task: ffff88104b6b5dc0 ti: ffff880f72d52000 task.ti: ffff880f72d52000
 RIP: 0010:[<ffffffffa03b66d0>]  [<ffffffffa03b66d0>] rbd_img_obj_callback+0x530/0x540 [rbd]
 RSP: 0018:ffff880f72d53be8  EFLAGS: 00010082
 RAX: 000000000000007b RBX: ffff8807892cd7b0 RCX: 0000000000000000
 RDX: ffff88107fc70000 RSI: ffff88107fc6e428 RDI: 0000000000000046
 RBP: ffff880f72d53c30 R08: 0000000000000000 R09: 0000000000001400
 R10: 0000000000000050 R11: ffffc90017a2bff8 R12: 0000000000000001
 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000
 FS:  0000000000000000(0000) GS:ffff88107fc60000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
 CR2: 00002b628abb3000 CR3: 0000000001c0e000 CR4: 00000000000027e0
 Stack:
  ffff8807892cd7bc ffffffffa036bb18 ffff8807892cd7e0 ffff8807892cd780
  ffff880793cdbe40 ffff88078a91e8a0 0000000000000000 0000000000000004
  ffff8806ad06a000 ffff880f72d53c48 ffffffffa03b48b7 ffff880793cdbe40
 Call Trace:
  [<ffffffffa036bb18>] ? ceph_tcp_recvmsg+0x48/0x60 [libceph]
  [<ffffffffa03b48b7>] rbd_obj_request_complete+0x27/0x70 [rbd]
  [<ffffffffa03b7d6f>] rbd_osd_req_callback+0xdf/0x4e0 [rbd]
  [<ffffffffa0378049>] dispatch+0x489/0x8e0 [libceph]
  [<ffffffffa036e98b>] try_read+0x4ab/0x10a0 [libceph]
  [<ffffffffa0370829>] con_work+0xb9/0x630 [libceph]
  [<ffffffff8107d10c>] process_one_work+0x17c/0x430
  [<ffffffff8107e0cc>] worker_thread+0x11c/0x3c0
  [<ffffffff8107dfb0>] ? manage_workers.isra.25+0x2a0/0x2a0
  [<ffffffff810848f0>] kthread+0xc0/0xd0
  [<ffffffff816edea9>] ? schedule+0x29/0x70
  [<ffffffff81084830>] ? kthread_create_on_node+0x120/0x120
  [<ffffffff816f8a6c>] ret_from_fork+0x7c/0xb0
  [<ffffffff81084830>] ? kthread_create_on_node+0x120/0x120
 Code: a0 31 c0 e8 3f cb 32 e1 0f 0b 48 c7 c1 10 cf 3b a0 ba 5f 08 00 00 48 c7 c6 50 e8 3b a0 48 c7 c7 d0 ca 3b a0 31 c0 e8 1c cb 32 e1 <0f> 0b 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 
 RIP  [<ffffffffa03b66d0>] rbd_img_obj_callback+0x530/0x540 [rbd]
  RSP <ffff880f72d53be8>
 ---[ end trace 260af37d80202466 ]---

Ubuntu Linux Kernel 3.11.0-20 is rebased to Kernel 3.11.10. And I read the issue about BUG #5647
And the kernel call trace looks almost the same, but Kernel 3.11.10 should have BUG #5647 patch.

Out CEPH cluster run on v0.72.2