Dec 09 21:09:19 n-13-0 kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
Dec 09 21:09:19 n-13-0 kernel: IP: [<ffffffffa04df27a>] rbd_dev_refresh+0xfa/0x180 [rbd]
Dec 09 21:09:19 n-13-0 kernel: PGD 62afb4067 PUD 599ee1067 PMD 0
Dec 09 21:09:19 n-13-0 kernel: Oops: 0002 [#1] SMP
Dec 09 21:09:19 n-13-0 kernel: Modules linked in: ext4 mbcache jbd2 rbd libceph dns_resolver xt_statistic xt_nat xt_recent xt_mark veth xt_comment xt_multiport bridge stp llc vport_vxlan vxlan ip6_udp_tunnel udp_tunnel openvswitch ipt_REJECT xt_conntrack iptable_filter ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_addrtype iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack dm_mirror dm_region_hash dm_log dm_thin_pool dm_persistent_data dm_bio_prison dm_bufio crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd sg hv_utils i2c_piix4 i2c_core pcspkr dm_mod nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_generic sr_mod cdrom ata_generic pata_acpi hv_netvsc hyperv_keyboard hid_hyperv hv_storvsc hyperv_fb crct10dif_pclmul
Dec 09 21:09:19 n-13-0 kernel:  ata_piix crct10dif_common libata crc32c_intel serio_raw hv_vmbus floppy
Dec 09 21:09:19 n-13-0 kernel: CPU: 2 PID: 113232 Comm: kworker/u128:1 Not tainted 3.10.0-327.36.3.el7.x86_64 #1
Dec 09 21:09:19 n-13-0 kernel: Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090006  05/23/2012
Dec 09 21:09:19 n-13-0 kernel: Workqueue: ceph-watch-notify do_event_work [libceph]
Dec 09 21:09:19 n-13-0 kernel: task: ffff88058212b980 ti: ffff88052fecc000 task.ti: ffff88052fecc000
Dec 09 21:09:19 n-13-0 kernel: RIP: 0010:[<ffffffffa04df27a>]  [<ffffffffa04df27a>] rbd_dev_refresh+0xfa/0x180 [rbd]
Dec 09 21:09:19 n-13-0 kernel: RSP: 0018:ffff88052fecfd90  EFLAGS: 00010246
Dec 09 21:09:19 n-13-0 kernel: RAX: 0000000000000000 RBX: ffff8804f7274000 RCX: 0000000000000000
Dec 09 21:09:19 n-13-0 kernel: RDX: 0000000000000000 RSI: fffffffffffffffe RDI: ffff8804f7274048
Dec 09 21:09:19 n-13-0 kernel: RBP: ffff88052fecfdb0 R08: 00000000000195a0 R09: ffff8807c26995a0
Dec 09 21:09:19 n-13-0 kernel: R10: ffffea0013e736c0 R11: ffffffffa04d903f R12: 0000000000000000
Dec 09 21:09:19 n-13-0 kernel: R13: 0000000000a00000 R14: ffff8804f7274048 R15: 0000000000000001
Dec 09 21:09:19 n-13-0 kernel: FS:  0000000000000000(0000) GS:ffff8807c2680000(0000) knlGS:0000000000000000
Dec 09 21:09:19 n-13-0 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 09 21:09:19 n-13-0 kernel: CR2: 0000000000000050 CR3: 000000062aeaf000 CR4: 00000000001406e0
Dec 09 21:09:19 n-13-0 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Dec 09 21:09:19 n-13-0 kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Dec 09 21:09:19 n-13-0 kernel: Stack:
Dec 09 21:09:19 n-13-0 kernel:  ffff8804f7274000 ffff8804f1b35b40 000037e100000006 000037e100000006
Dec 09 21:09:19 n-13-0 kernel:  ffff88052fecfde0 ffffffffa04df334 ffff88051f208a20 ffff8804f1b35b40
Dec 09 21:09:19 n-13-0 kernel:  00000000000f9475 000037e100000006 ffff88052fecfe18 ffffffffa04933b0
Dec 09 21:09:19 n-13-0 kernel: Call Trace:
Dec 09 21:09:19 n-13-0 kernel:  [<ffffffffa04df334>] rbd_watch_cb+0x34/0x180 [rbd]
Dec 09 21:09:19 n-13-0 kernel:  [<ffffffffa04933b0>] do_event_work+0x40/0xb0 [libceph]
Dec 09 21:09:19 n-13-0 kernel:  [<ffffffff8109d69b>] process_one_work+0x17b/0x470
Dec 09 21:09:19 n-13-0 kernel:  [<ffffffff8109e46b>] worker_thread+0x11b/0x400
Dec 09 21:09:19 n-13-0 kernel:  [<ffffffff8109e350>] ? rescuer_thread+0x400/0x400
Dec 09 21:09:19 n-13-0 kernel:  [<ffffffff810a5b8f>] kthread+0xcf/0xe0
Dec 09 21:09:19 n-13-0 kernel:  [<ffffffff810a5ac0>] ? kthread_create_on_node+0x140/0x140
Dec 09 21:09:19 n-13-0 kernel:  [<ffffffff81646a98>] ret_from_fork+0x58/0x90
Dec 09 21:09:19 n-13-0 kernel:  [<ffffffff810a5ac0>] ? kthread_create_on_node+0x140/0x140
Dec 09 21:09:19 n-13-0 kernel: Code: 43 48 02 fb 66 0f 1f 44 00 00 4d 85 ed 0f 85 77 ff ff ff 4c 8b ab 90 01 00 00 49 c1 ed 09 f6 05 06 59 00 00 04 75 67 48 8b 43 10 <4c> 89 68 50 48 8b 7b 10 e8 b9 ae d3 e0 5b 44 89 e0 41 5c 41 5d
Dec 09 21:09:19 n-13-0 kernel: RIP  [<ffffffffa04df27a>] rbd_dev_refresh+0xfa/0x180 [rbd]
Dec 09 21:09:19 n-13-0 kernel:  RSP <ffff88052fecfd90>
Dec 09 21:09:19 n-13-0 kernel: CR2: 0000000000000050
Dec 09 21:09:19 n-13-0 kernel: ---[ end trace 87df50e7575b9ec0 ]---