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    Subjectnumerous kernel warnings from XFS with rc2
    From
    Date
    Hi,

    I am running XFS on top of bcache. Apparmor
    is enabled on my system. I am seeing tons of warnings like this:

    2014-10-30T11:39:38.774440+01:00 linux-0dmf kernel: [ 650.901837]
    WARNING: CPU: 2 PID: 2378 at mm/truncate.c:758 pagecache_isize_extended
    +0xfd/0x110()
    2014-10-30T11:39:38.774441+01:00 linux-0dmf kernel: [ 650.901838]
    Modules linked in: tun ctr ccm fuse bnep bluetooth crc16 af_packet
    ebtable_nat ebtables xt_limit xt_conntrack iptable_raw xt_CT
    iptable_filter nf_conntrack_netbios_ns nf_conntrack_broadcast
    nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables raid0
    tpm_infineon snd_hda_codec_hdmi snd_hda_codec_idt snd_hda_codec_generic
    intel_rapl snd_hda_intel x86_pkg_temp_thermal snd_hda_controller
    snd_hda_codec kvm_intel kvm sr_mod crct10dif_pclmul snd_hwdep
    crc32c_intel snd_pcm ghash_clmulni_intel aesni_intel ppdev ablk_helper
    arc4 parport_pc parport cryptd tpm_tis snd_seq lrw gf128mul glue_helper
    iwldvm nouveau aes_x86_64 tpm mac80211 iTCO_wdt hp_wmi
    iTCO_vendor_support sparse_keymap mxm_wmi iwlwifi cfg80211 ttm pcspkr
    serio_raw microcode rfkill drm_kms_helper cdrom drm i2c_i801 snd_timer
    snd_seq_device e1000e i2c_algo_bit snd soundcore lpc_ich mfd_core ptp
    shpchp pps_core wmi sg dm_mod autofs4 sd_mod ahci libahci libata
    scsi_dh_rdac scsi_dh_hp_sw scsi_dh_emc scsi_dh scsi_mod
    2014-10-30T11:39:38.774442+01:00 linux-0dmf kernel: [ 650.901877] CPU:
    2 PID: 2378 Comm: dconf-service Tainted: P W
    3.18.0-rc2-12-desktop #3
    2014-10-30T11:39:38.774443+01:00 linux-0dmf kernel: [ 650.901878]
    Hardware name: Hewlett-Packard HP EliteBook 8780w/190A, BIOS L70 Ver.
    93.01 05/17/2013
    2014-10-30T11:39:38.774444+01:00 linux-0dmf kernel: [ 650.901879]
    0000000000000009 ffff8800498f7d38 ffffffff81674e33 0000000000000000
    2014-10-30T11:39:38.774447+01:00 linux-0dmf kernel: [ 650.901881]
    0000000000000000 ffff8800498f7d78 ffffffff8104842c ffffea0014c50c00
    2014-10-30T11:39:38.774448+01:00 linux-0dmf kernel: [ 650.901882]
    0000000000001000 ffff8805ff7575a8 0000000000000000 0000000000001cb6
    2014-10-30T11:39:38.774449+01:00 linux-0dmf kernel: [ 650.901884] Call
    Trace:
    2014-10-30T11:39:38.774449+01:00 linux-0dmf kernel: [ 650.901888]
    [<ffffffff81674e33>] dump_stack+0x4e/0x71
    2014-10-30T11:39:38.774450+01:00 linux-0dmf kernel: [ 650.901890]
    [<ffffffff8104842c>] warn_slowpath_common+0x7c/0xa0
    2014-10-30T11:39:38.774450+01:00 linux-0dmf kernel: [ 650.901892]
    [<ffffffff810484f5>] warn_slowpath_null+0x15/0x20
    2014-10-30T11:39:38.774450+01:00 linux-0dmf kernel: [ 650.901893]
    [<ffffffff8111b98d>] pagecache_isize_extended+0xfd/0x110
    2014-10-30T11:39:38.774451+01:00 linux-0dmf kernel: [ 650.901896]
    [<ffffffff81251ee0>] ? __xfs_get_blocks+0x550/0x550
    2014-10-30T11:39:38.774451+01:00 linux-0dmf kernel: [ 650.901897]
    [<ffffffff8111c5f2>] truncate_setsize+0x22/0x40
    2014-10-30T11:39:38.774452+01:00 linux-0dmf kernel: [ 650.901899]
    [<ffffffff81267c0b>] xfs_setattr_size+0x10b/0x3e0
    2014-10-30T11:39:38.774452+01:00 linux-0dmf kernel: [ 650.901901]
    [<ffffffff812756ce>] ? xfs_trans_commit+0x13e/0x220
    2014-10-30T11:39:38.774453+01:00 linux-0dmf kernel: [ 650.901904]
    [<ffffffff8125ccd7>] xfs_file_fallocate+0x2e7/0x300
    2014-10-30T11:39:38.774453+01:00 linux-0dmf kernel: [ 650.901907]
    [<ffffffff81165aa4>] ? __sb_start_write+0x44/0xd0
    2014-10-30T11:39:38.774454+01:00 linux-0dmf kernel: [ 650.901910]
    [<ffffffff81374ac3>] ? apparmor_file_permission+0x13/0x20
    2014-10-30T11:39:38.774454+01:00 linux-0dmf kernel: [ 650.901911]
    [<ffffffff811617aa>] do_fallocate+0x12a/0x1d0
    2014-10-30T11:39:38.774455+01:00 linux-0dmf kernel: [ 650.901912]
    [<ffffffff81161893>] SyS_fallocate+0x43/0x70
    2014-10-30T11:39:38.774455+01:00 linux-0dmf kernel: [ 650.901915]
    [<ffffffff8167b252>] system_call_fastpath+0x12/0x17
    2014-10-30T11:39:38.774456+01:00 linux-0dmf kernel: [ 650.901916]
    ---[ end trace 584b070525fc4efe ]---
    2014-10-30T11:39:39.871450+01:00 linux-0dmf kernel: [ 651.997869]
    ------------[ cut here ]------------

    Regards
    Oliver




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