Why I am getting "WARNING: at mm/page-writeback.c" in /var/log/messages on RHEL6?

Issue

• ABRT captures kernel oops messages and generates crash data in /var/spool/abrt/kerneloops-*.

• Following message was printed in /var/log/messages:

  WARNING: at mm/page-writeback.c:1161 __set_page_dirty_nobuffers+0x123/0x160() (Tainted: G           ---------------- T)
  Hardware name: VMware Virtual Platform
  Modules linked in: iptable_filter ip_tables vsock(U) vmci(U) autofs4 nfs lockd fscache(T) nfs_acl auth_rpcgss sunrpc ipt_REJECT ip6t_REJECT
  nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 dm_mirror dm_region_hash dm_log ppdev parport_pc parport
  sg microcode vmware_balloon vmxnet3 i2c_piix4 i2c_core shpchp ext4 mbcache jbd2 sd_mod crc_t10dif sr_mod cdrom vmw_pvscsi ata_generic pata_acpi ata_piix 
  dm_mod [last unloaded: nf_defrag_ipv4]
  Pid: 17652, comm: gnome-settings- Tainted: G           ---------------- T 2.6.32-131.6.1.el6.x86_64 #1
  Call Trace:
  [<ffffffff810670f7>] ? warn_slowpath_common+0x87/0xc0 
  [<ffffffff8106714a>] ? warn_slowpath_null+0x1a/0x20
  [<ffffffff811225e3>] ? __set_page_dirty_nobuffers+0x123/0x160
  [<ffffffff8115f690>] ? migrate_page_copy+0x1e0/0x1f0
  [<ffffffff8115f6d5>] ? migrate_page+0x35/0x50
  [<ffffffffa03364ce>] ? nfs_migrate_page+0x5e/0xf0 [nfs] 
  [<ffffffff8115f9e8>] ? move_to_new_page+0x98/0x170
  [<ffffffff8115fef4>] ? migrate_pages+0x434/0x4c0
  [<ffffffff811560b0>] ? compaction_alloc+0x0/0x3e0
  [<ffffffff811559bb>] ? compact_zone+0x4fb/0x780
  [<ffffffff81155ee1>] ? compact_zone_order+0xa1/0xe0
  [<ffffffff8115603c>] ? try_to_compact_pages+0x11c/0x190 
  [<ffffffff8111ff95>] ? __alloc_pages_nodemask+0x5f5/0x8b0
  [<ffffffff8115475a>] ? alloc_pages_vma+0x9a/0x150
  [<ffffffff8116d31e>] ? do_huge_pmd_anonymous_page+0x13e/0x350
  [<ffffffff8100bc8e>] ? apic_timer_interrupt+0xe/0x20
  [<ffffffff811383c3>] ? handle_mm_fault+0x263/0x2c0
  [<ffffffff810414e9>] ? __do_page_fault+0x139/0x480
  [<ffffffff8113c322>] ? vma_merge+0x262/0x3b0
  [<ffffffff8113c73b>] ? __vm_enough_memory+0x3b/0x190
  [<ffffffff8113d6fc>] ? do_brk+0x26c/0x350
  [<ffffffff8113aebe>] ? remove_vma+0x6e/0x90
  [<ffffffff814e054e>] ? do_page_fault+0x3e/0xa0
  [<ffffffff814dd8d5>] ? page_fault+0x25/0x30