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SubjectWARNING: at mm/page-writeback.c:1990 __set_page_dirty_nobuffers+0x13a/0x170()
Just saw this on Linus tree as of 731a7378b81c2f5fa88ca1ae20b83d548d5613dc


------------[ cut here ]------------
WARNING: at mm/page-writeback.c:1990 __set_page_dirty_nobuffers+0x13a/0x170()
Hardware name:
Modules linked in: ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_CHECKSUM iptable_mangle bridge stp llc ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables snd_emu10k1 snd_util_mem snd_ac97_codec ac97_bus snd_hwdep snd_rawmidi snd_seq_device snd_pcm microcode snd_page_alloc pcspkr snd_timer snd lpc_ich i2c_i801 mfd_core e1000e soundcore vhost_net tun macvtap macvlan kvm_intel nfsd kvm nfs_acl auth_rpcgss lockd sunrpc btrfs libcrc32c zlib_deflate firewire_ohci firewire_core sata_sil crc_itu_t floppy radeon i2c_algo_bit drm_kms_helper ttm drm i2c_core [last unloaded: scsi_wait_scan]
Pid: 35, comm: khugepaged Not tainted 3.4.0+ #75
Call Trace:
[<ffffffff8104897f>] warn_slowpath_common+0x7f/0xc0
[<ffffffff810489da>] warn_slowpath_null+0x1a/0x20
[<ffffffff81146bda>] __set_page_dirty_nobuffers+0x13a/0x170
[<ffffffff81193322>] migrate_page_copy+0x1e2/0x260
[<ffffffff811933fb>] migrate_page+0x5b/0x70
[<ffffffff811934b5>] move_to_new_page+0xa5/0x260
[<ffffffff81193ca8>] migrate_pages+0x4c8/0x540
[<ffffffff811610d0>] ? suitable_migration_target.isra.15+0x1d0/0x1d0
[<ffffffff81162056>] compact_zone+0x216/0x480
[<ffffffff81321ad8>] ? debug_check_no_obj_freed+0x88/0x210
[<ffffffff8116259d>] compact_zone_order+0x8d/0xd0
[<ffffffff811626a9>] try_to_compact_pages+0xc9/0x140
[<ffffffff81649f4e>] __alloc_pages_direct_compact+0xaa/0x1d0
[<ffffffff8114562b>] __alloc_pages_nodemask+0x60b/0xab0
[<ffffffff81321bbc>] ? debug_check_no_obj_freed+0x16c/0x210
[<ffffffff81185236>] alloc_pages_vma+0xb6/0x190
[<ffffffff81195d8d>] khugepaged+0x95d/0x1570
[<ffffffff81073350>] ? wake_up_bit+0x40/0x40
[<ffffffff81195430>] ? collect_mm_slot+0xa0/0xa0
[<ffffffff81072c37>] kthread+0xb7/0xc0
[<ffffffff8165dc14>] kernel_thread_helper+0x4/0x10
[<ffffffff8165511d>] ? retint_restore_args+0xe/0xe
[<ffffffff81072b80>] ? flush_kthread_worker+0x190/0x190
[<ffffffff8165dc10>] ? gs_change+0xb/0xb
---[ end trace 4324bd0bca27f6f0 ]---



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