Error "VFS: Busy inodes after unmount of 0:ab" on RHEL6

Issue

System panicked with the following message:

VFS: Busy inodes after unmount of 0:ab. Self-destruct in 5 seconds.  Have a nice day...
general protection fault: 0000 [#1] SMP 
last sysfs file: /sys/devices/virtual/net/virbr0-nic/statistics/collisions
CPU 11 
Modules linked in: mvfs(U) fuse ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle iptable_filter ip_tables bridge autofs4 8021q garp stp llc nfs lockd auth_rpcgss nfs_acl sunrpc ipmi_devintf cpufreq_ondemand acpi_cpufreq freq_table mperf cachefiles fscache(T) vhost_net macvtap macvlan tun kvm_intel kvm acpi_pad microcode serio_raw sb_edac edac_core sr_mod cdrom sg iTCO_wdt iTCO_vendor_support shpchp snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc i2c_i801 i2c_core ext4 jbd2 mbcache sd_mod crc_t10dif ahci igb dca ptp pps_core isci libsas wmi mpt2sas scsi_transport_sas raid_class dm_mirror dm_region_hash dm_log dm_mod be2iscsi bnx2i cnic uio ipv6 cxgb4i cxgb4 cxgb3i libcxgbi cxgb3 mdio libiscsi_tcp qla4xxx iscsi_boot_sysfs libiscsi scsi_transport_iscsi [last unloaded: usb_storage]

Pid: 22328, comm: gvfsd-trash Tainted: G           ---------------  T 2.6.32-358.18.1.el6.x86_64 #1 ASUSTeK COMPUTER INC. Z9PE-D16 Series/Z9PE-D16 Series
RIP: 0010:[<ffffffff8119c97b>]  [<ffffffff8119c97b>] iput+0x4b/0x70
RSP: 0018:ffff887fb2a3fec8  EFLAGS: 00010286
RAX: ffffffff8119dae0 RBX: ffff880296f24508 RCX: 00000000ffffffff
RDX: c5401b0c4b99063f RSI: ffffffff81fcb700 RDI: ffffffff81fcb700
RBP: ffff887fb2a3fed8 R08: 0000000000000000 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000001 R12: ffff880296f24508
R13: ffff887fb32483c0 R14: ffff88046a8f8d30 R15: ffff887fb3248438
FS:  00007f46b28a67a0(0000) GS:ffff8841614a0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9f64aea000 CR3: 00000066a7a8d000 CR4: 00000000000407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400
Process gvfsd-trash (pid: 22328, threadinfo ffff887fb2a3e000, task ffff8866a7df5500)
Stack:
 ffff887fb2a3fed8 ffff88046a8f8cf8 ffff887fb2a3ff28 ffffffff811c2f9c
<d> ffff887fb2a3ff58 ffff880296f245b8 0000000000000000 ffff887b197ed180
<d> ffff887fb3248458 ffff88046a8f8cf8 ffff887fb32483c0 0000000000000000
Call Trace:
 [<ffffffff811c2f9c>] fsnotify_destroy_mark_by_entry+0x14c/0x1d0
 [<ffffffff811c58c5>] sys_inotify_rm_watch+0x85/0xe0
 [<ffffffff8100b288>] tracesys+0xd9/0xde
Code: 48 8d 7f 48 48 c7 c6 00 b7 fc 81 e8 10 ae 0d 00 85 c0 74 2e 48 8b 83 08 01 00 00 48 8b 50 38 48 c7 c0 e0 da 19 81 48 85 d2 74 12 <48> 8b 42 20 48 c7 c2 e0 da 19 81 48 85 c0 48 0f 44 c2 48 89 df 
RIP  [<ffffffff8119c97b>] iput+0x4b/0x70
 RSP <ffff887fb2a3fec8>