linux-kernel - WARN_ON: fs/buffer.c:1152 mark_buffer

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Date:	Wed, 2 Sep 2009 11:19:17 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	LKML <linux-kernel@...r.kernel.org>
cc:	Greg KH <greg@...ah.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: WARN_ON: fs/buffer.c:1152 mark_buffer_dirty in 2.6.31-rc8-git

The warning in fs/buffer.c 1152 triggers with the latest git on my
laptop when I remove an USB stick. Never seen that before.

Thanks,

	tglx
---

WARNING: at /home/tglx/work/kernel/git/linux-2.6/fs/buffer.c:1152 mark_buffer_dirty+0x3f/0xa5()
Hardware name: 7661W1P
Modules linked in: ext2 option usbserial usb_storage fuse ipt_MASQUERADE iptable_nat nf_nat sco bridge stp llc bnep l2cap bluetooth sunrpc ipv6 cpufreq_ondemand acpi_cpufreq freq_table dm_multipath kvm_intel kvm uinput snd_hda_codec_analog arc4 ecb iwlagn firewire_ohci firewire_core snd_hda_intel yenta_socket iwlcore crc_itu_t joydev snd_hda_codec rsrc_nonstatic mac80211 snd_hwdep snd_pcm iTCO_wdt i2c_i801 pcspkr snd_timer iTCO_vendor_support snd thinkpad_acpi cfg80211 soundcore hwmon snd_page_alloc e1000e rfkill wmi i915 drm i2c_algo_bit i2c_core video output [last unloaded: microcode]
Pid: 26, comm: khubd Not tainted 2.6.31-rc8 #1
Call Trace:
 [<ffffffff810610ff>] warn_slowpath_common+0x8d/0xbb
 [<ffffffff81061154>] warn_slowpath_null+0x27/0x3d
 [<ffffffff81150c16>] mark_buffer_dirty+0x3f/0xa5
 [<ffffffffa04420d5>] ext2_sync_fs+0x90/0xba [ext2]
 [<ffffffff8114e383>] __sync_filesystem+0x65/0x90
 [<ffffffff8114e5d0>] sync_filesystem+0x5a/0x75
 [<ffffffff81157667>] fsync_bdev+0x37/0x6c
 [<ffffffff8124b1aa>] invalidate_partition+0x34/0x65
 [<ffffffff8118ad52>] del_gendisk+0x4a/0x10d
 [<ffffffff81347465>] sd_remove+0x5f/0xb3
 [<ffffffff81326db5>] __device_release_driver+0x79/0xd5
 [<ffffffff81326f18>] device_release_driver+0x36/0x59
 [<ffffffff81325e59>] bus_remove_device+0xc5/0x10a
 [<ffffffff81323896>] device_del+0x141/0x1a6
 [<ffffffff81342aba>] __scsi_remove_device+0x5c/0xb1
 [<ffffffff8133f4cf>] scsi_forget_host+0x59/0x91
 [<ffffffff813379b0>] scsi_remove_host+0x93/0x123
 [<ffffffffa042b0d6>] quiesce_and_remove_host+0x72/0xcf [usb_storage]
 [<ffffffffa042b241>] usb_stor_disconnect+0x2c/0x4f [usb_storage]
 [<ffffffff8138ce3c>] usb_unbind_interface+0x7a/0x117
 [<ffffffff81326db5>] __device_release_driver+0x79/0xd5
 [<ffffffff81326f18>] device_release_driver+0x36/0x59
 [<ffffffff81325e59>] bus_remove_device+0xc5/0x10a
 [<ffffffff81323896>] device_del+0x141/0x1a6
 [<ffffffff81389498>] usb_disable_device+0xdd/0x1fb
 [<ffffffff81382b40>] usb_disconnect+0xfa/0x1ca
 [<ffffffff813844bd>] hub_events+0x639/0x11e0
 [<ffffffff813850aa>] hub_thread+0x46/0x1d0
 [<ffffffff8107d6f3>] ? autoremove_wake_function+0x0/0x5f
 [<ffffffff81385064>] ? hub_thread+0x0/0x1d0
 [<ffffffff8107d270>] kthread+0xa0/0xa8
 [<ffffffff8101409a>] child_rip+0xa/0x20
 [<ffffffff810139fd>] ? restore_args+0x0/0x30
 [<ffffffff8107d1d0>] ? kthread+0x0/0xa8
 [<ffffffff81014090>] ? child_rip+0x0/0x20
---[ end trace ccd8dc4f063ddca9 ]---


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