Re: [PATCH 2/4] xfs: don't leak the retained da state when doing a leaf to node conversion

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On Wed, May 18, 2022 at 11:54:47AM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@xxxxxxxxxx>
> 
> If a setxattr operation finds an xattr structure in leaf format, adding
> the attr can fail due to lack of space and hence requires an upgrade to
> node format.  After this happens, we'll roll the transaction and
> re-enter the state machine, at which time we need to perform a second
> lookup of the attribute name to find its new location.  This lookup
> attaches a new da state structure to the xfs_attr_item but doesn't free
> the old one (from the leaf lookup) and leaks it.  Fix that.
> 
> Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> Reviewed-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
> ---
>  fs/xfs/libxfs/xfs_attr.c |   10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)

Looks OK.

Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
-- 
Dave Chinner
david@xxxxxxxxxxxxx



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