kernel BUG at include/linux/dcache.h:303

kernel BUG at include/linux/dcache.h:303

[Martin Weber]

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Hi,

found the following message (see attached file), shortly after the system 
died...

Kind regards,

Martin

[-- Attachment #2: bug.txt --]
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VFS: Busy inodes after unmount of shfs. Self-destruct in 5 seconds.  Have a nice day...
------------[ cut here ]------------
kernel BUG at include/linux/dcache.h:303!
invalid opcode: 0000 [#1]
PREEMPT
Modules linked in: shfs radeon drm ipw2100 joydev
CPU:    0
EIP:    0060:[<c0169b6d>]    Tainted: P      VLI
EFLAGS: 00210246   (2.6.17-gentoo-r8-mkw #3)
EIP is at __follow_mount+0x7d/0x90
eax: 00000000   ebx: dff63140   ecx: d0f5a000   edx: dcec3dac
esi: d0f5be0c   edi: 00000001   ebp: d0f5be0c   esp: d0f5bd90
ds: 007b   es: 007b   ss: 0068
Process emacs-21 (pid: 9321, threadinfo=d0f5a000 task=d42fe070)
Stack: dff631c0 d46776e4 d475dac4 d0f5bf2c d0f5be00 c0169bdf d9c57dac d0f5be00
d726b200 dff63cc0 c0174873 df6e9668 c0476548 cf266010 d0f5be00 da34a5cc
000324b8 c016b331 df6e9668 d726b230 c5667894 d0f5bf2c cf26600d 00000000
Call Trace:
<c0169bdf> do_lookup+0x5f/0x180  <c0174873> dput+0x33/0x1a0
<c016b331> __link_path_walk+0x151/0xf60  <c016c19c> link_path_walk+0x5c/0x100
<c0158e6e> get_unused_fd+0x5e/0xe0  <c016c457> do_path_lookup+0xa7/0x270
<c015c326> get_empty_filp+0x46/0x110  <c016d1e4> __path_lookup_intent_open+0x54/0xa0
<c016d3c2> open_namei+0x72/0x720  <c012ff62> enqueue_hrtimer+0x62/0xa0
<c015923a> do_filp_open+0x3a/0x70  <c0158e6e> get_unused_fd+0x5e/0xe0
<c01592c3> do_sys_open+0x53/0x100  <c01593c7> sys_open+0x27/0x30
<c0102db7> sysenter_past_esp+0x54/0x75
Code: 56 04 bf 01 00 00 00 8b 5a 54 85 db 74 14 8b 06 89 54 24 04 89 04 24 e8 a2 0e 01 00 85 c0 89 c3 75 a2 83 c4 08 89 f8 5b
 5e 5f c3 <0f> 0b 2f 01 9a 7b 39 c0 eb c8 89 f6 8d bc 27 00 00 00 00 83 ec
EIP: [<c0169b6d>] __follow_mount+0x7d/0x90 SS:ESP 0068:d0f5bd90

Re: kernel BUG at include/linux/dcache.h:303

[Christoph Hellwig]

On Wed, Nov 08, 2006 at 05:08:43PM +0100, Martin Weber wrote:
> Hi,
> 
> found the following message (see attached file), shortly after the system 
> died...
> 
> Kind regards,
> 
> Martin

> VFS: Busy inodes after unmount of shfs. Self-destruct in 5 seconds.  Have a nice day...
> ------------[ cut here ]------------
> kernel BUG at include/linux/dcache.h:303!
> invalid opcode: 0000 [#1]
> PREEMPT
> Modules linked in: shfs radeon drm ipw2100 joydev
> CPU:    0
> EIP:    0060:[<c0169b6d>]    Tainted: P      VLI

Whatever propritary module shfs is it's most likely the cause.
Please try again without it.

Re: kernel BUG at include/linux/dcache.h:303

[Miklos Szeredi]

> > 
> > found the following message (see attached file), shortly after the system 
> > died...
> > 
> > Kind regards,
> > 
> > Martin
> 
> > VFS: Busy inodes after unmount of shfs. Self-destruct in 5 seconds.  Have a nice day...
> > ------------[ cut here ]------------
> > kernel BUG at include/linux/dcache.h:303!
> > invalid opcode: 0000 [#1]
> > PREEMPT
> > Modules linked in: shfs radeon drm ipw2100 joydev
> > CPU:    0
> > EIP:    0060:[<c0169b6d>]    Tainted: P      VLI
> 
> Whatever propritary module shfs is it's most likely the cause.
> Please try again without it.

While not propritary, shfs _is_ severely broken.  Try sshfs instead
which provides similar functionality:

  http://fuse.sourceforge.net/sshfs.html

Miklos

Re: kernel BUG at include/linux/dcache.h:303

[Christoph Hellwig]

On Wed, Nov 08, 2006 at 05:35:40PM +0100, Miklos Szeredi wrote:
> > Whatever propritary module shfs is it's most likely the cause.
> > Please try again without it.
> 
> While not propritary, shfs _is_ severely broken.  Try sshfs instead
> which provides similar functionality:
> 
>   http://fuse.sourceforge.net/sshfs.html

Agreed to that recommendation.  But then again either shfs is so outdated
that it doesn't even have a MODULE_LICENSE state or the submitter snipped
away a module without a proper license from the oops report..

Re: kernel BUG at include/linux/dcache.h:303

[Martin Weber]

Hi,

On Wednesday 08 November 2006 18:07, Christoph Hellwig wrote:
> On Wed, Nov 08, 2006 at 05:35:40PM +0100, Miklos Szeredi wrote:
> > > Whatever propritary module shfs is it's most likely the cause.
> > > Please try again without it.
> >
> > While not propritary, shfs _is_ severely broken.  Try sshfs instead
> > which provides similar functionality:
> >
> >   http://fuse.sourceforge.net/sshfs.html
>
> Agreed to that recommendation.  But then again either shfs is so outdated
> that it doesn't even have a MODULE_LICENSE state or the submitter snipped
> away a module without a proper license from the oops report..

SHFS seems to be outdated. Checking on the web reveals the last release and 
web page update was 2.5 years ago. The source contains a license statement:
shfs/Linux-2.6/inode.c:MODULE_LICENSE("GPL");

I have one tainted module (cisco_ipsec) loaded, which was not in the post 
since I did not know of the importance.

M.

-- 
Martin Weber           Office: +49-241-80-27183
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