[Bug 14739] BUG: scheduling while atomic: nfsd/3369/0x00000002

[Bug 14739] BUG: scheduling while atomic: nfsd/3369/0x00000002

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=14739


Trond Myklebust <trond.myklebust@fys.uio.no> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |trond.myklebust@fys.uio.no
          Component|NFS                         |ext4
         AssignedTo|trond.myklebust@fys.uio.no  |fs_ext4@kernel-bugs.osdl.or
                   |                            |g




--- Comment #1 from Trond Myklebust <trond.myklebust@fys.uio.no>  2009-12-05 17:28:12 ---
Hmm... This looks to me like it is rather an ext4 bug. Reassigning to
the ext4 folks for the moment.

-- 
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

Re: [Bug 14739] BUG: scheduling while atomic: nfsd/3369/0x00000002

[Aneesh Kumar K.V]

On Sat, Dec 05, 2009 at 05:28:13PM +0000, bugzilla-daemon@bugzilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=14739
> 
> 
> Trond Myklebust <trond.myklebust@fys.uio.no> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |trond.myklebust@fys.uio.no
>           Component|NFS                         |ext4
>          AssignedTo|trond.myklebust@fys.uio.no  |fs_ext4@kernel-bugs.osdl.or
>                    |                            |g
> 
> 
> 
> 
> --- Comment #1 from Trond Myklebust <trond.myklebust@fys.uio.no>  2009-12-05 17:28:12 ---
> Hmm... This looks to me like it is rather an ext4 bug. Reassigning to
> the ext4 folks for the moment.
> 

Hmm we are doing dquot_reserve_space with i_block_reservation_lock held.
ie

spin_lock(&EXT4_I(inode)->i_block_reservation_lock);  
- vfs_dq_reserve_block
  - down_read(&sb_dqopt(inode->i_sb)->dqptr_sem)


Adding Mingming to CC:
-aneesh

[Bug 14739] BUG: scheduling while atomic: nfsd/3369/0x00000002

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=14739





--- Comment #2 from Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>  2009-12-07 17:09:41 ---
On Sat, Dec 05, 2009 at 05:28:13PM +0000, bugzilla-daemon@bugzilla.kernel.org
wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=14739
> 
> 
> Trond Myklebust <trond.myklebust@fys.uio.no> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |trond.myklebust@fys.uio.no
>           Component|NFS                         |ext4
>          AssignedTo|trond.myklebust@fys.uio.no  |fs_ext4@kernel-bugs.osdl.or
>                    |                            |g
> 
> 
> 
> 
> --- Comment #1 from Trond Myklebust <trond.myklebust@fys.uio.no>  2009-12-05 17:28:12 ---
> Hmm... This looks to me like it is rather an ext4 bug. Reassigning to
> the ext4 folks for the moment.
> 

Hmm we are doing dquot_reserve_space with i_block_reservation_lock held.
ie

spin_lock(&EXT4_I(inode)->i_block_reservation_lock);  
- vfs_dq_reserve_block
  - down_read(&sb_dqopt(inode->i_sb)->dqptr_sem)


Adding Mingming to CC:
-aneesh

-- 
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 14739] BUG: scheduling while atomic: nfsd/3369/0x00000002

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=14739


Dmitri Monakhov <dmonakhov@openvz.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dmonakhov@openvz.org




--- Comment #3 from Dmitri Monakhov <dmonakhov@openvz.org>  2009-12-11 12:11:33 ---
Proposed patch http://patchwork.ozlabs.org/patch/40896/

tests performed:
 mounted : ext4  with generic quota and journalled quota 
 1) fsstress -p16 -d /mnt/test -l999999999999 -n9999999999999999
   Note: many task are necessary in order to catch race condition introduced
   in [v2] of the patch 
 2) ./write-chown-truncate /mnt/ 9999999999999

-- 
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 14739] BUG: scheduling while atomic: nfsd/3369/0x00000002

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=14739


Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |alan@lxorguk.ukuu.org.uk
         Resolution|                            |OBSOLETE




-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 14739] BUG: scheduling while atomic: nfsd/3369/0x00000002

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=14739


Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED




-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.