Re: WARNING: at fs/inode.c:280 drop_nlink+0x31/0x33()

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On Wed, 29 Aug 2012 09:25:27 -0700
Nick Pasich <Nick@xxxxxxxxxxxxxxx> wrote:

> 
> I'm using kernel 3.5.3 ... 
> 
> It happens on 3.5.1 and 3.5.2 also.
> 
> I know that Nick Bowler has already reported this...
> 
> I'm experiencing the same thing.
> 
> It happens when moving files from one directory to another
> on the same partition (NFS). 
> 
>   --( Nick Pasich )--
> 
> 
> #############################################################################
> ##
> ## Happens when PSTs are moved from one directory to another on the ISCSI ...
> ##
> #############################################################################
> 
> Aug 29 08:06:16 localhost kernel: ------------[ cut here ]------------
> Aug 29 08:06:16 localhost kernel: WARNING: at fs/inode.c:280 drop_nlink+0x31/0x33()
> Aug 29 08:06:16 localhost kernel: Hardware name: To Be Filled By O.E.M.
> Aug 29 08:06:16 localhost kernel: Modules linked in: ecb md4 cifs w83627hf eeprom asb100 hwmon_vid hwmon nfsd exportfs ipv6 psmouse usb_storage io_edgeport usbserial sg r8169 mii evdev intel_agp uhci_hcd i2c_i801 i2c_core shpchp intel_gtt agpgart ehci_hcd microcode serio_raw
> Aug 29 08:06:16 localhost kernel: Pid: 31477, comm: rm Tainted: G        W    3.5.3 #1
> Aug 29 08:06:16 localhost kernel: Call Trace:
> Aug 29 08:06:16 localhost kernel:  [<c10a53e2>] ? drop_nlink+0x31/0x33
> Aug 29 08:06:16 localhost kernel:  [<c1025dd2>] ? warn_slowpath_common+0x7b/0x90
> Aug 29 08:06:16 localhost kernel:  [<c10a53e2>] ? drop_nlink+0x31/0x33
> Aug 29 08:06:16 localhost kernel:  [<c1025e02>] ? warn_slowpath_null+0x1b/0x1f
> Aug 29 08:06:16 localhost kernel:  [<c10a53e2>] ? drop_nlink+0x31/0x33
> Aug 29 08:06:16 localhost kernel:  [<f83dfa81>] ? cifs_unlink+0x134/0x63d [cifs]
> Aug 29 08:06:16 localhost kernel:  [<c10a37d4>] ? dput+0x11/0x117
> Aug 29 08:06:16 localhost kernel:  [<c10a87d4>] ? mntput_no_expire+0xf/0xf7
> Aug 29 08:06:16 localhost kernel:  [<c109ca9b>] ? vfs_unlink+0x4e/0xb6
> Aug 29 08:06:16 localhost kernel:  [<c109b333>] ? __lookup_hash+0x54/0xac
> Aug 29 08:06:16 localhost kernel:  [<c109e8c2>] ? do_unlinkat+0x10a/0x12d
> Aug 29 08:06:16 localhost kernel:  [<c10a0124>] ? sys_ioctl+0x34/0x57
> Aug 29 08:06:16 localhost kernel:  [<c140a8ed>] ? syscall_call+0x7/0xb
> Aug 29 08:06:16 localhost kernel: ---[ end trace 756b427e3bd671f9 ]---
> 

(cc'ing linux-cifs ml)

This stack trace comes from cifs, not nfs.

Steve French has a patch queued in his tree to silence this warning
that I believe he intends to send to Linus for 3.6. Perhaps we should
consider backporting it for 3.5.z too?

-- 
Jeff Layton <jlayton@xxxxxxxxxx>
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