RHEL7 の nfs デーモンによってファイルが作成されると、カーネルパニックが発生する

Issue

• RHEL7 で NFS ファイルシステムにアクセスする際にカーネルパニックが発生します。

kernel BUG at fs/dcache.c:1557!
invalid opcode: 0000 [#1] SMP
Modules linked in: ... symap_rh_ES_7_3_10_0_514_el7_x86_64(POE) symev_rh_ES_7_3_10_0_514_el7_x86_64(OE) nfsd fscache xfs ...
CPU: 0 PID: 49879 Comm: nfsd Tainted: P        W  OE  ------------   3.10.0-514.26.2.el7.x86_64 #1
Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 09/21/2015
...
Call Trace:
 [<ffffffffa0238648>] xfs_vn_mknod+0x108/0x250 [xfs]
 [<ffffffffa02387a6>] xfs_vn_mkdir+0x16/0x20 [xfs]
 [<ffffffff8120aae7>] vfs_mkdir+0xb7/0x160
 [<ffffffffa0374d29>] nfsd_create+0x4b9/0x540 [nfsd]
 [<ffffffffa0381213>] nfsd4_create+0xd3/0x430 [nfsd]
 [<ffffffff812adbeb>] ? selinux_cred_prepare+0x1b/0x30
 [<ffffffffa03827bc>] nfsd4_proc_compound+0x49c/0x790 [nfsd]
 [<ffffffffa04e2016>] symev_nfsd4_proc_compound+0x216/0x770 [symev_rh_ES_7_3_10_0_514_el7_x86_64]
 [<ffffffffa036d713>] nfsd_dispatch+0xd3/0x280 [nfsd]
 [<ffffffffa0325ea3>] svc_process_common+0x453/0x6f0 [sunrpc]
 [<ffffffffa032624b>] svc_process+0x10b/0x1a0 [sunrpc]
 [<ffffffffa036d07f>] nfsd+0xdf/0x150 [nfsd]
 [<ffffffffa036cfa0>] ? nfsd_destroy+0x80/0x80 [nfsd]
 [<ffffffff810b0a4f>] kthread+0xcf/0xe0
 [<ffffffff810b0980>] ? kthread_create_on_node+0x140/0x140 
 [<ffffffff81697658>] ret_from_fork+0x58/0x90
 [<ffffffff810b0980>] ? kthread_create_on_node+0x140/0x140
Code: 89 ef e8 ...
RIP  [<ffffffff81216b99>] d_instantiate+0x69/0x70
RSP <ffff88000981ba60>