Re: [PATCH] xfs: sanitize da node pad field on write

[Yuto Ohnuki]

On Wed, Apr 22, 2026 at 07:52:39AM +1000, Dave Chinner wrote:
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/fs/xfs/libxfs/xfs_da_btree.c b/fs/xfs/libxfs/xfs_da_btree.c
> > index ad801b7bd2dd..f6054a47d24c 100644
> > --- a/fs/xfs/libxfs/xfs_da_btree.c
> > +++ b/fs/xfs/libxfs/xfs_da_btree.c
> > @@ -318,6 +318,8 @@ xfs_da3_node_write_verify(
> >  	if (bip)
> >  		hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn);
> >  
> > +	hdr3->__pad32 = 0;
> > +
> 
> Please add a comment explaining why the padding is being written
> unconditionally here. By itself like this it makes no sense at all.
> 
> -Dave.
> -- 
> Dave Chinner
> dgc@xxxxxxxxxx

Thanks for the advice. I'll add the comment and send as v2.

Yuto Ohnuki



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