[ 6537.702958] general protection fault: 0000 [#1] SMP
[ 6537.703964] Modules linked in: loop lustre(OE) obdecho(OE) mgc(OE) lov(OE) mdc(OE) osc(OE) lmv(OE) fid(OE) fld(OE) ptlrpc_gss(OE) ptlrpc(OE) obdclass(OE) ksocklnd(OE) lnet(OE) libcfs(OE) rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache rpcrdma ib_isert iscsi_target_mod ib_iser libiscsi scsi_transport_iscsi ib_srpt target_core_mod crc_t10dif crct10dif_generic ib_srp scsi_transport_srp scsi_tgt ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_core iosf_mbi sunrpc crc32_pclmul ppdev ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd joydev parport_pc parport pcspkr virtio_balloon i2c_piix4 ip_tables ext4 mbcache jbd2 virtio_blk ata_generic pata_acpi crct10dif_pclmul crct10dif_common crc32c_intel floppy serio_raw ata_piix libata 8139too
[ 6537.717869] virtio_pci virtio_ring 8139cp virtio mii
[ 6537.718681] CPU: 0 PID: 10810 Comm: umount Kdump: loaded Tainted: G OE ------------ 3.10.0-957.1.3.el7.x86_64 #1
[ 6537.720503] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
[ 6537.721444] task: ffff8af37bfad140 ti: ffff8af3384dc000 task.ti: ffff8af3384dc000
[ 6537.722663] RIP: 0010:[<ffffffffc07a42d7>] [<ffffffffc07a42d7>] cfs_hash_putref+0x1a7/0x500 [libcfs]
[ 6537.724244] RSP: 0018:ffff8af3384dfc10 EFLAGS: 00010202
[ 6537.725115] RAX: ffffacf042353008 RBX: 0000000000000008 RCX: 000000000000000b
[ 6537.726270] RDX: ffffacf04234f000 RSI: ffff8af3384dfc18 RDI: ffff8af37ac96180
[ 6537.727436] RBP: ffff8af3384dfc50 R08: ffff8af3384dc000 R09: 0000000000000001
[ 6537.728602] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8af37ac96180
[ 6537.729761] R13: ffff000000000000 R14: 000000000000008a R15: ffff8af37b474000
[ 6537.730925] FS: 00007f6255a9c880(0000) GS:ffff8af37fc00000(0000) knlGS:0000000000000000
[ 6537.732234] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6537.733175] CR2: 00007f6255669630 CR3: 0000000063b7c000 CR4: 00000000000606f0
[ 6537.734342] Call Trace:
[ 6537.734950] [<ffffffffc09270e4>] lu_site_fini+0x54/0xa0 [obdclass]
[ 6537.736024] [<ffffffffc0d26a2e>] lov_device_free+0x1e/0x650 [lov]
[ 6537.737074] [<ffffffffc092acb8>] lu_stack_fini+0x98/0xe0 [obdclass]
[ 6537.738154] [<ffffffffc092ed2e>] cl_stack_fini+0xe/0x10 [obdclass]
[ 6537.739301] [<ffffffffc0dcf1d0>] cl_sb_fini+0x70/0x1b0 [lustre]
[ 6537.740307] [<ffffffffc0d9d53a>] ll_put_super+0x51a/0x890 [lustre]
[ 6537.741386] [<ffffffffb108a593>] ? fsnotify_destroy_marks+0x13/0xc0
[ 6537.742459] [<ffffffffb0f53c9d>] ? call_rcu_sched+0x1d/0x20
[ 6537.743399] [<ffffffffc0dc44ec>] ? ll_destroy_inode+0x1c/0x20 [lustre]
[ 6537.744510] [<ffffffffb105e9cb>] ? destroy_inode+0x3b/0x60
[ 6537.745433] [<ffffffffb105eb05>] ? evict+0x115/0x180
[ 6537.746262] [<ffffffffb105ebae>] ? dispose_list+0x3e/0x50
[ 6537.747171] [<ffffffffb105f86b>] ? evict_inodes+0xdb/0x140
[ 6537.748103] [<ffffffffb1043dbd>] generic_shutdown_super+0x6d/0x100
[ 6537.749138] [<ffffffffb10441b2>] kill_anon_super+0x12/0x20
[ 6537.750073] [<ffffffffc091c7c5>] lustre_kill_super+0x45/0x50 [obdclass]
[ 6537.751184] [<ffffffffb104456e>] deactivate_locked_super+0x4e/0x70
[ 6537.752211] [<ffffffffb1044cf6>] deactivate_super+0x46/0x60
[ 6537.753150] [<ffffffffb106326f>] cleanup_mnt+0x3f/0x80
[ 6537.754028] [<ffffffffb1063302>] __cleanup_mnt+0x12/0x20
[ 6537.754956] [<ffffffffb0ebe79b>] task_work_run+0xbb/0xe0
[ 6537.755880] [<ffffffffb0e2bc65>] do_notify_resume+0xa5/0xc0
[ 6537.756839] [<ffffffffb1575124>] int_signal+0x12/0x17
[ 6537.757692] Code: 00 00 00 00 49 8b 44 24 18 48 8d 75 c8 4c 89 e7 48 8b 00 e8 1c 27 9e f0 48 85 c0 74 7a 4c 8b 28 4d 85 ed 74 59 41 f6 44 24 2d 08 <49> 8b 5d 00 74 20 e9 be 01 00 00 66 0f 1f 44 00 00 41 f6 44 24
[ 6537.762920] RIP [<ffffffffc07a42d7>] cfs_hash_putref+0x1a7/0x500 [libcfs]
[ 6537.764089] RSP <ffff8af3384dfc10>