Re: [PATCH] xfs: fix a memory leak in xfs_get_acl on error

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On Wed, Mar 30, 2016 at 10:41 PM, Mateusz Guzik <mguzik@xxxxxxxxxx> wrote:
> On Thu, Mar 31, 2016 at 07:26:55AM +1100, Dave Chinner wrote:
>> On Wed, Mar 30, 2016 at 04:35:07PM +0200, Mateusz Guzik wrote:
>> > Signed-off-by: Mateusz Guzik <mguzik@xxxxxxxxxx>
>> > ---
>> >  fs/xfs/xfs_acl.c | 3 ++-
>> >  1 file changed, 2 insertions(+), 1 deletion(-)
>> >
>> > diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c
>> > index 2dad2b5..ce10c4c 100644
>> > --- a/fs/xfs/xfs_acl.c
>> > +++ b/fs/xfs/xfs_acl.c
>> > @@ -162,10 +162,11 @@ xfs_get_acl(struct inode *inode, int type)
>> >              */
>> >             if (error != -ENOATTR)
>> >                     acl = ERR_PTR(error);
>> > -           return acl;
>> > +           goto out;
>> >     }
>> >
>> >     acl = xfs_acl_from_disk(xfs_acl, len, XFS_ACL_MAX_ENTRIES(ip->i_mount));
>> > +out:
>> >     kmem_free(xfs_acl);
>> >     return acl;
>> >  }
>>
>> Hi Mateusz,
>>
>> It looks like we've already fixed this problem - can you check
>> 4.6-rc1 and if the leak is still there post an updated patch?
>>
>
> The patch which introuced the bug is not present in 4.6-rc1.

The patch is on the work.acl branch of
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git.

Thanks,
Andreas

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