On Sat, 27 Oct 2012 20:19:38 +0800
Ricky Ng-Adam <rngadam@xxxxxxxxxxx> wrote:
> A one time warning after quite a bit of usage with no other problems:
>
> ------------[ cut here ]------------
> WARNING: at /home/rngadam/lophilo/linux/fs/inode.c:280 drop_nlink+0x54/0x60()
> Modules linked in: ipt_REDIRECT xt_tcpudp iptable_nat nf_nat
> nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ip_tables x_tables
> snd_atmel_ac97c snd_ac97_codec ac97_bus snd_pcm snd_page_alloc
> snd_timer snd soundcore lophilo(O) ipv6 autofs4
> [<c000dfdc>] (unwind_backtrace+0x0/0xf0) from [<c0017784>]
> (warn_slowpath_common+0x4c/0x64)
> [<c0017784>] (warn_slowpath_common+0x4c/0x64) from [<c00177b8>]
> (warn_slowpath_null+0x1c/0x24)
> [<c00177b8>] (warn_slowpath_null+0x1c/0x24) from [<c00a9084>]
> (drop_nlink+0x54/0x60)
> [<c00a9084>] (drop_nlink+0x54/0x60) from [<c0131268>]
> (nfs_dentry_iput+0x38/0x50)
> [<c0131268>] (nfs_dentry_iput+0x38/0x50) from [<c00a67b0>] (d_kill+0x9c/0xec)
> [<c00a67b0>] (d_kill+0x9c/0xec) from [<c00a6cf0>] (dput+0x78/0x134)
> [<c00a6cf0>] (dput+0x78/0x134) from [<c0095128>] (fput+0x194/0x238)
> [<c0095128>] (fput+0x194/0x238) from [<c0092380>] (filp_close+0x68/0x80)
> [<c0092380>] (filp_close+0x68/0x80) from [<c001ab88>]
> (put_files_struct+0xb4/0xd8)
> [<c001ab88>] (put_files_struct+0xb4/0xd8) from [<c001ad1c>]
> (do_exit+0x134/0x72c)
> [<c001ad1c>] (do_exit+0x134/0x72c) from [<c001b59c>] (do_group_exit+0x40/0xac)
> [<c001b59c>] (do_group_exit+0x40/0xac) from [<c001b618>]
> (__wake_up_parent+0x0/0x18)
> ---[ end trace 3bda0ec3b276e040 ]---
>
> client:
>
> Linux lophilo 3.4.4+ #34 Sat Oct 6 16:28:57 CST 2012 armv5tejl GNU/Linux
>
> server:
>
> Linux rngadam-think 3.5.0-17-generic #28-Ubuntu SMP Tue Oct 9 19:32:08
> UTC 2012 i686 i686 i686 GNU/Linux
>
> # exportfs -v
> /home/rngadam/lophilo.nfs
> <world>(rw,async,wdelay,no_root_squash,no_subtree_check)
> /home/rngadam/lophilo
> <world>(rw,wdelay,root_squash,all_squash,no_subtree_check,anonuid=0,anongid=0)
>
> seems to have occurred while a bunch of faiilng lstat on long paths
> were going on:
>
> stat { [Error: ENOENT, lstat
> '/home/lophilo/lophilo/lmc/users/rngadam/lophilojs-example.git/client/code/colorpicker/img/colorpicker/img/colorpicker/img/colorpicker/js/colorpicker/css/colorpicker']
> errno: 34,
> code: 'ENOENT',
> path: '/home/lophilo/lophilo/lmc/users/rngadam/lophilojs-example.git/client/code/colorpicker/img/colorpicker/img/colorpicker/img/colorpicker/js/colorpicker/css/colorpicker'
> }
>
The warning is fairly harmless, but it does look scary. Neil Brown had
a patch to fix it, but I don't think Trond ever took it or commented on
it.
Trond, any thoughts on Neil's one-line patch here?
https://lkml.org/lkml/2012/9/25/24
(Note that I still have my doubts as to whether CIFS or NFS ought to be
manipulating or relying on the i_nlink like this, but the patch looks
fairly harmless as an interim fix).
--
Jeff Layton <jlayton@xxxxxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
