Memory leak in cephwrap_realpath (vfs_ceph.c)

[David Disseldorp]

On Tue, 8 May 2018 11:34:26 -0700, Jeremy Allison via samba-technical wrote:

> On Mon, May 07, 2018 at 11:11:42AM +0200, David Disseldorp via samba-technical wrote:
> > Hi Vandana,
> > 
> > On Sun, 6 May 2018 16:53:30 +0000, Rungta, Vandana via samba-technical wrote:
> > 
> > > There are a couple of memory leak issues in cephwrap_realpath in vfs_ceph.c
> > > 
> > > 
> > >   1.  “result” is double allocated by  SMB_MALLOC_ARRAY and by asprintf .
> > >   2.  The error code paths for r < 0 need to SAFE_FREE “result”.
> > 
> > Thanks for the report, your analysis looks correct to me.
> > Could you please resend your patch as an attachment or git pull URL, as
> > the inline version seems to be malformed.
> > Also, please add your sign-off to the commit.

Actually the SAFE_FREE() in the error path should be dropped, as
"result" is undefined. This patch looks fine otherwise:
Reviewed-by: David Disseldorp <ddiss at samba.org>

Please change the Author field to Vandana's once she's happy to
sign-off.

Cheers, David