linux-kernel - numerous kernel warnings from XFS with rc2

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Date:	Thu, 30 Oct 2014 11:43:50 +0100
From:	Oliver Neukum <oneukum@...e.de>
To:	John Johansen <john.johansen@...onical.com>,
	Dave Chinner <david@...morbit.com>
Cc:	linux-kernel@...r.kernel.org, jack@...e.com
Subject: numerous kernel warnings from XFS with rc2

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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