Kernel crashes with a message "FS-Cache: 5 == 3 is false" and "kernel BUG at fs/fscache/operation.c:447!" in Red Hat Enterprise Linux 7

Issue

• Kernel crashes with following logs :

[2181003.134784] FS-Cache: 
[2181003.138318] FS-Cache: Assertion failed
[2181003.143449] FS-Cache: 5 == 3 is false
[2181003.148506] ------------[ cut here ]------------
[2181003.154544] kernel BUG at fs/fscache/operation.c:447!
[2181003.161078] invalid opcode: 0000 [#1] SMP 
[2181003.166550] Modules linked in: mmfs26(OE) mmfslinux(OE) rpcsec_gss_krb5 nfsv4 dns_resolver tracedev(OE) overlay(T) xfs libcrc32c nfsv3 nfs rdma_ucm(OE) ib_ucm(OE) rdma_cm(OE) iw_cm(OE) ib_ipoib(OE) ib_cm(OE) ib_sa(OE) ib_uverbs(OE) ib_umad(OE) ib_mad(OE) cachefiles fscache mlx5_ib(OE) ib_core(OE) ib_addr(OE) ib_netlink(OE) intel_powerclamp coretemp intel_rapl sd_mod iosf_mbi crc_t10dif crct10dif_generic kvm_intel sg kvm irqbypass crct10dif_pclmul crct10dif_common crc32_pclmul crc32c_intel iTCO_wdt ghash_clmulni_intel iTCO_vendor_support mxm_wmi mgag200 ttm aesni_intel lrw drm_kms_helper gf128mul glue_helper syscopyarea ablk_helper sysfillrect cryptd sysimgblt mlx5_core(OE) fb_sys_fops drm ahci mei_me libahci sb_edac mei pcspkr i2c_i801 shpchp lpc_ich edac_core libata fjes wmi acpi_power_meter acpi_pad
[2181003.251770]  acpi_cpufreq binfmt_misc knem(OE) nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables tcp_lp ext4 mbcache jbd2 fuse ipmi_si ipmi_devintf ipmi_msghandler gnbd(OE) loop mlx4_en(OE) mlx4_core(OE) mlx_compat(OE) i40e tg3 e1000e e1000 ixgbe mdio igb ptp pps_core i2c_algo_bit i2c_core dca [last unloaded: mlx_compat]
[2181003.285574] CPU: 23 PID: 570735 Comm: kworker/u386:1 Tainted: G           OE  ------------ T 3.10.0-514.el7.x86_64 #1
[2181003.298500] Hardware name: Cray Inc. S2600KPFR/S2600KPFR, BIOS SE5C610.86B.01.01.0015.012820160943 01/28/2016
[2181003.310683] Workqueue: fscache_operation fscache_op_work_func [fscache]
[2181003.319181] task: ffff8836be8f9f60 ti: ffff88296e960000 task.ti: ffff88296e960000
[2181003.328659] RIP: 0010:[<ffffffffa04d0dae>]  [<ffffffffa04d0dae>] fscache_op_complete+0x18e/0x190 [fscache]
[2181003.340614] RSP: 0018:ffff88296e963d70  EFLAGS: 00010246
[2181003.347682] RAX: 0000000000000019 RBX: ffff880d21985b00 RCX: 0000000000000000
[2181003.356791] RDX: 0000000000000000 RSI: ffff883ffde4f838 RDI: ffff883ffde4f838
[2181003.365908] RBP: ffff88296e963d90 R08: 0000000000000092 R09: 00000000000310c9
[2181003.375032] R10: 00000000000003ff R11: 0000000000000001 R12: ffff880e5e606400
[2181003.384152] R13: ffff880e5e606520 R14: ffffea00dbb2bbc0 R15: ffff880d21985b00
[2181003.393284] FS:  0000000000000000(0000) GS:ffff883ffde40000(0000) knlGS:0000000000000000
[2181003.403486] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[2181003.411079] CR2: 00007fafa26c2000 CR3: 00000000019ba000 CR4: 00000000001407e0
[2181003.420235] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[2181003.429388] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[2181003.438529] Stack:
[2181003.441951]  ffff883d4baaeca0 ffff880e5e606400 ffff880e5e606520 ffffea00dbb2bbc0
[2181003.451496]  ffff88296e963e00 ffffffffa0552ec6 ffff88296e963fd8 ffff880d21985b88
[2181003.461045]  0000000800000000 ffff880d21985b00 ffff88296e963fd8 ffff883d4baaec60
[2181003.470605] Call Trace:
[2181003.474552]  [<ffffffffa0552ec6>] cachefiles_read_copier+0x3c6/0x450 [cachefiles]
[2181003.484123]  [<ffffffffa04d0472>] fscache_op_work_func+0x22/0x50 [fscache]
[2181003.493026]  [<ffffffff810a7f3b>] process_one_work+0x17b/0x470
[2181003.500768]  [<ffffffff810a8d76>] worker_thread+0x126/0x410
[2181003.508219]  [<ffffffff810a8c50>] ? rescuer_thread+0x460/0x460
[2181003.515969]  [<ffffffff810b052f>] kthread+0xcf/0xe0
[2181003.522646]  [<ffffffff810b0460>] ? kthread_create_on_node+0x140/0x140
[2181003.531168]  [<ffffffff81696418>] ret_from_fork+0x58/0x90
[2181003.538438]  [<ffffffff810b0460>] ? kthread_create_on_node+0x140/0x140
[2181003.546970] Code: 31 c0 e8 6c e6 1a e1 48 c7 c7 4c 58 4d a0 31 c0 e8 5e e6 1a e1 8b 73 40 ba 03 00 00 00 48 c7 c7 48 4d 4d a0 31 c0 e8 48 e6 1a e1 <0f> 0b 0f 1f 44 00 00 55 48 89 e5 41 56 41 55 41 54 53 8b 47 40 
[2181003.571371] RIP  [<ffffffffa04d0dae>] fscache_op_complete+0x18e/0x190 [fscache]
[2181003.580840]  RSP <ffff88296e963d70>