[SSI-devel] Re: SSI-1.9.x oops deleting .cfs_unlink directory

[John B. <joh...@hp...>]

Roger Tsang wrote:
> Hi,
> 
> I ran into this oops on kernel NULL pointer.  OPENSSI-FC branch.  What 
> does this mean John?  That the inode doesn't exist?  The trace shows mc 
> was deleting .cfs_unlink directory.
> 
> Roger

Well, who is trying to unlink the .cfs_unlink directory? If you are 
running hardmounts, this is a bad thing to do.

As to the stack trace, your kernel does not seem to agree with my 
compile. Can you provde some disassembly of svrtok_dorelse so I can see 
where things went bad?

John



> 
> kdb> bt
> Stack traceback for pid 107872
> 0xcd284020   107872   103063  1    0   R  0xcd2841e0 *mc
> EBP        EIP        Function (args)
> 0xe5313ec4 0xc0277d4a svrtok_dorelse+0x19a (0xe2448040, 0x0, 0xcde95280)
> 0xe5313ed8 0xc0275984 svrtok_relse+0xc4 (0xe2448040, 0xcde95384)
> 0xe5313ee8 0xc026774a cfs_clear_inode+0x3a (0xcde95384, 0xcde95384, 
> 0xc02676c0)
> 0xe5313efc 0xc016f90b clear_inode+0xbb (0xcde95384, 0xf28036c4, 0xcde95384)
> 0xe5313f10 0xc02676dc cfs_delete_inode+0x1c (0xcde95384, 0x1, 
> 0xcde95384, 0xcde95384, 0xcde95384)
> 0xe5313f2c 0xc0170625 generic_delete_inode+0x85 (0xcde95384)
> 0xe5313f38 0xc01707e8 generic_drop_inode+0x18 (0xcde95384, 0xf28036b4)
> 0xe5313f48 0xc0170854 iput+0x54 (0xcde95384, 0xf28036b4, 0x0, 0xd3ce7000)
> 0xe5313f60 0xc016dcfc dput+0x1c (0xf28036b4, 0xf28036b4, 0xedb65c8c, 
> 0xd082fe80, 0x179d4f25)
> 0xe5313fbc 0xc0165cca sys_rmdir+0xfa
>            0xc0103c55 sysenter_past_esp+0x52
> kdb> go
> Catastrophic error detected
> kdb_continue_catastrophic=0, type go a second time if you really want to 
> continue
> kdb>
> 
> inode (0xcde95384)
>     i_ino = 98305
>     i_count = 0
>     i_mode = 0x41ff
>     i_nlink = 0
>     i_uid = 0
>     i_gid = 0
>     i_rdev = 0
>     i_size = 45056
>     i_sem:
>         count = 1
>         sleepers= 0
>     i_op = 0xc0511e40
>     i_fop = 0xc0511dc0
>     i_sb = 0xefc7ee00
>     i_pipe = 0x00000000
>     i_bdev = 0x00000000
>     i_state = 0x10
>     i_flags = 0x12
>     i_sock = 0
>     i_writecount = 0
>     i_generation = 0
> more> c
> Only 'q' or 'Q' are processed at more prompt, input ignored
>     u = 0xcde954a8
> 
> # ll -id ./.cfs_unlink/
> 98305 drwxrwxrwx  2 root root 45056 Sep 19 18:52 ./.cfs_unlink/