System Hang in: "mfe_fileaccess_wake_up_all_events_and_reset_scanningQueue"

Applies To:

Oracle Cloud Infrastructure - Version N/A and later

Linux OS - Version Oracle Linux 6.0 and later

Symptoms:

Instance hangs with /var/log/messages* showing RIP in kernel module mfe_fileaccess_100610110.

Apr 20 05:55:49 _HOSTNAME_ kernel: [1465172.496004] NMI watchdog: BUG: soft lockup - CPU#26 stuck for 23s! [Broker KM Evnt:4884]
Apr 20 05:55:49 _HOSTNAME_ kernel: [1465172.496004] Modules linked in: ip6table_filter ip6_tables ip_set nfnetlink tcp_diag inet_diag nfsv3 nfs_acl mfe_fileaccess_100610110(OE) autofs4 rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs fscache lockd grace mfe_aac_100610110(OE) sunrpc xt_comment iptable_filter ip_tables be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i libcxgbi cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ppdev parport_pc parport pcspkr sg virtio_net net_failover failover i2c_piix4 ext4 jbd2 mbcache2 sd_mod virtio_scsi virtio_pci virtio_ring virtio pata_acpi ata_generic ata_piix floppy bochs_drm ttm drm_kms_helper drm i2c_core sysimgblt