Bug 17461

Summary:	WARNING at fs/fs-writeback.c:972 __mark_inode_dirty+0x1d4/0x1e0()
Product:	File System	Reporter:	Larry Finger (Larry.Finger)
Component:	Other	Assignee:	Jan Kara (jack)
Status:	CLOSED DUPLICATE
Severity:	normal	CC:	jack, rjw, tj
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.36-rc3	Subsystem:
Regression:	Yes	Bisected commit-id:

Description Larry Finger 2010-08-30 14:58:04 UTC

On bootup, I get the following warning logged:

[   12.192109] ------------[ cut here ]------------
[   12.192118] WARNING: at fs/fs-writeback.c:972
__mark_inode_dirty+0x1d4/0x1e0()
[   12.192122] Hardware name: HP Pavilion dv2700 Notebook PC
[   12.192124] bdi-block not registered
[   12.192126] Modules linked in: loop(+) dm_mod ide_cd_mod cdrom
snd_hda_codec_conexant ide_pci_generic snd_hda_intel snd_hda_codec r8712u(C)
amd74xx snd_pcm ide_core snd_timer snd k8temp sg joydev snd_page_alloc
forcedeth hwmon i2c_nforce2 serio_raw i2c_core battery ac button ext3 jbd
mbcache ohci_hcd sd_mod ehci_hcd usbcore fan processor ahci libahci libata
scsi_mod thermal
[   12.192164] Pid: 2338, comm: udisks-part-id Tainted: G         C 
2.6.36-rc3-realtek+ #7
[   12.192167] Call Trace:
[   12.192174]  [<ffffffff8104614a>] warn_slowpath_common+0x7a/0xb0
[   12.192178]  [<ffffffff81046221>] warn_slowpath_fmt+0x41/0x50
[   12.192183]  [<ffffffff81325584>] ? _raw_spin_lock+0x34/0x40
[   12.192186]  [<ffffffff8112ded5>] ? __mark_inode_dirty+0x65/0x1e0
[   12.192190]  [<ffffffff8112e044>] __mark_inode_dirty+0x1d4/0x1e0
[   12.192195]  [<ffffffff811210bd>] touch_atime+0x12d/0x170
[   12.192201]  [<ffffffff810cbb61>] generic_file_aio_read+0x5c1/0x720
[   12.192205]  [<ffffffff810e7fbd>] ? handle_mm_fault+0x75d/0x950
[   12.192211]  [<ffffffff8110a862>] do_sync_read+0xd2/0x110
[   12.192214]  [<ffffffff8107a4a0>] ? mark_held_locks+0x70/0xa0
[   12.192218]  [<ffffffff8132436f>] ? __mutex_unlock_slowpath+0xbf/0x150
[   12.192222]  [<ffffffff8107a6cd>] ? trace_hardirqs_on+0xd/0x10
[   12.192226]  [<ffffffff8110af93>] vfs_read+0xc3/0x170
[   12.192229]  [<ffffffff8110b08c>] sys_read+0x4c/0x80
[   12.192234]  [<ffffffff81002d2b>] system_call_fastpath+0x16/0x1b
[   12.192237] ---[ end trace 9b3df7d4a57af8dc ]---
[   12.198091] loop: module loaded

The kernel is a fresh pull from linux-2.6.git with some code added to staging for an RTL8192 USB device.

Comment 1 Tejun Heo 2010-09-01 09:31:01 UTC

Jan, is this related to the block bdi thing we talked about before?  Thanks.

Comment 2 Jan Kara 2010-09-01 11:11:48 UTC

Yes, this seems exactly like the problem you were fixing...

Comment 3 Jan Kara 2010-09-01 11:12:58 UTC

PS: I'm sorry, I've got sidetracked with other work so I didn't try pushing your fix yet.

Comment 4 Tejun Heo 2010-09-01 11:31:47 UTC

Ah... good.  I completely forgot what the original issue was and can't find the thread now.  It was related to block layer bdi not ready for writeback or some such, right?  Can you please give me a pointer?

Thanks.

Comment 5 Jan Kara 2010-09-01 11:38:31 UTC

Larry, this seems like a duplicate of bug 16312. So are you running with Tejun's fix from that bug? From your initial comment it seems you don't...

Comment 6 Larry Finger 2010-09-01 13:56:04 UTC

Tejun's patch entitles "sd-delay-uevent" does not fix the problem. With it, I warm rebooted 3 times without the problem, but got the warning with a cold boot. As it is intermittent, I do not know if that is significant.

I will be going off-line today for about 60 days. Perhaps someone else will turn up with this warning and they will be able to test. If not, I'll be back in November.

Comment 7 Jan Kara 2010-09-20 10:20:33 UTC


*** This bug has been marked as a duplicate of bug 16312 ***