Re: [bug report] xfs: connect refcount adjust functions to upper layers

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On Thu, Dec 15, 2016 at 03:23:57PM +0300, Dan Carpenter wrote:
> Hello Darrick J. Wong,
> 
> The patch 33ba61292084: "xfs: connect refcount adjust functions to
> upper layers" from Oct 3, 2016, leads to the following static checker
> warning:
> 
> 	fs/xfs/xfs_refcount_item.c:535 xfs_cui_recover()
> 	warn: passing freed memory 'rcur'
> 
> fs/xfs/xfs_refcount_item.c
>    523                  }
>    524          }
>    525  
>    526          xfs_refcount_finish_one_cleanup(tp, rcur, error);
>                                                     ^^^^
> Freed here.
> 
>    527          error = xfs_defer_finish(&tp, &dfops, NULL);
>    528          if (error)
>    529                  goto abort_error;
>    530          set_bit(XFS_CUI_RECOVERED, &cuip->cui_flags);
>    531          error = xfs_trans_commit(tp);
>    532          return error;
>    533  
>    534  abort_error:
>    535          xfs_refcount_finish_one_cleanup(tp, rcur, error);
>                                                     ^^^^
> Again here...

Yep, definitely a bug.  I'll make a fix.

--D

> 
>    536          xfs_defer_cancel(&dfops);
>    537          xfs_trans_cancel(tp);
>    538          return error;
>    539  }
> 
> regards,
> dan carpenter
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