| To: | Vlad Apostolov <vapo@xxxxxxx> |
|---|---|
| Subject: | Re: TAKE 956783 - xfs_dm_getall_dmattr() doesn't check if the user buffer is at valid address |
| From: | Christoph Hellwig <hch@xxxxxxxxxxxxx> |
| Date: | Wed, 29 Nov 2006 15:11:46 +0000 |
| Cc: | Christoph Hellwig <hch@xxxxxxxxxxxxx>, sgi.bugs.xfs@xxxxxxxxxxxx, linux-xfs@xxxxxxxxxxx |
| In-reply-to: | <456B7C1A.90209@xxxxxxx> |
| References: | <45629AD8.8000800@xxxxxxx> <20061127055859.GC1374@xxxxxxxxxxxxx> <456B7C1A.90209@xxxxxxx> |
| Sender: | xfs-bounce@xxxxxxxxxxx |
| User-agent: | Mutt/1.4.2.2i |
On Tue, Nov 28, 2006 at 11:00:26AM +1100, Vlad Apostolov wrote: > The fix is actually fine as it gives an early indication (even not complete) > that the user pointer is bad. There is another problem you are pointing at > and it is the userspace pointer dereference later on without using > copy_to_user(). If you have any patch fixing this problem it would be great. Unfortunately I haven't found my patch, I'm sorry. I have on the other hand found various old trivial XFS patches of mine that I'll submit. |
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