From: Leon Romanovsky <leon@kernel.org>
To: Dan Carpenter <dan.carpenter@oracle.com>, Jason Gunthorpe <jgg@ziepe.ca>
Cc: Zhu Yanjun <yanjunz@mellanox.com>,
Sudip Mukherjee <sudipm.mukherjee@gmail.com>,
Doug Ledford <dledford@redhat.com>,
linux-rdma@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] RDMA/rxe: Return -EFAULT if copy_from_user() fails
Date: Tue, 12 May 2020 11:31:07 +0300 [thread overview]
Message-ID: <20200512083107.GI4814@unreal> (raw)
In-Reply-To: <20200512081706.GJ9365@kadam>
On Tue, May 12, 2020 at 11:17:06AM +0300, Dan Carpenter wrote:
> On Tue, May 12, 2020 at 10:02:03AM +0300, Leon Romanovsky wrote:
> > On Tue, May 12, 2020 at 09:29:36AM +0300, Leon Romanovsky wrote:
> > > On Mon, May 11, 2020 at 09:37:42PM +0300, Dan Carpenter wrote:
> > > > This function used to always return -EINVAL but we updated it to try
> > > > preserve the error codes. Unfortunately the copy_to_user() is returning
> > > > the number of bytes remaining to be copied instead of a negative error
> > > > code.
> > > >
> > > > Fixes: a3a974b4654d ("RDMA/rxe: Always return ERR_PTR from rxe_create_mmap_info()")
> > > > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> > > > ---
> > > > drivers/infiniband/sw/rxe/rxe_queue.c | 5 +++--
> > > > 1 file changed, 3 insertions(+), 2 deletions(-)
> > >
> > >
> > > Thanks,
> > > Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
> >
> > Actually Yanjun is right and "err" can be removed.
> >
> > Thanks
>
> I don't know if the code you guys are looking at is older or newer than
> linux-next... :P
We both looked on rdma-next, but the wrong code was added to -rc.
Jason, that patch was marked as stable@.
Thanks
WARNING: multiple messages have this Message-ID (diff)
From: Leon Romanovsky <leon@kernel.org>
To: Dan Carpenter <dan.carpenter@oracle.com>, Jason Gunthorpe <jgg@ziepe.ca>
Cc: Zhu Yanjun <yanjunz@mellanox.com>,
Sudip Mukherjee <sudipm.mukherjee@gmail.com>,
Doug Ledford <dledford@redhat.com>,
linux-rdma@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] RDMA/rxe: Return -EFAULT if copy_from_user() fails
Date: Tue, 12 May 2020 08:31:07 +0000 [thread overview]
Message-ID: <20200512083107.GI4814@unreal> (raw)
In-Reply-To: <20200512081706.GJ9365@kadam>
On Tue, May 12, 2020 at 11:17:06AM +0300, Dan Carpenter wrote:
> On Tue, May 12, 2020 at 10:02:03AM +0300, Leon Romanovsky wrote:
> > On Tue, May 12, 2020 at 09:29:36AM +0300, Leon Romanovsky wrote:
> > > On Mon, May 11, 2020 at 09:37:42PM +0300, Dan Carpenter wrote:
> > > > This function used to always return -EINVAL but we updated it to try
> > > > preserve the error codes. Unfortunately the copy_to_user() is returning
> > > > the number of bytes remaining to be copied instead of a negative error
> > > > code.
> > > >
> > > > Fixes: a3a974b4654d ("RDMA/rxe: Always return ERR_PTR from rxe_create_mmap_info()")
> > > > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> > > > ---
> > > > drivers/infiniband/sw/rxe/rxe_queue.c | 5 +++--
> > > > 1 file changed, 3 insertions(+), 2 deletions(-)
> > >
> > >
> > > Thanks,
> > > Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
> >
> > Actually Yanjun is right and "err" can be removed.
> >
> > Thanks
>
> I don't know if the code you guys are looking at is older or newer than
> linux-next... :P
We both looked on rdma-next, but the wrong code was added to -rc.
Jason, that patch was marked as stable@.
Thanks
next prev parent reply other threads:[~2020-05-12 8:31 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-11 18:37 [PATCH] RDMA/rxe: Return -EFAULT if copy_from_user() fails Dan Carpenter
2020-05-11 18:37 ` Dan Carpenter
2020-05-12 1:12 ` Yanjun Zhu
2020-05-12 6:22 ` Leon Romanovsky
2020-05-12 6:22 ` Leon Romanovsky
2020-05-12 6:29 ` Leon Romanovsky
2020-05-12 6:29 ` Leon Romanovsky
2020-05-12 7:02 ` Leon Romanovsky
2020-05-12 7:02 ` Leon Romanovsky
2020-05-12 8:17 ` Dan Carpenter
2020-05-12 8:17 ` Dan Carpenter
2020-05-12 8:31 ` Leon Romanovsky [this message]
2020-05-12 8:31 ` Leon Romanovsky
2020-05-12 8:33 ` Yanjun Zhu
2020-05-12 14:51 ` Jason Gunthorpe
2020-05-12 14:51 ` Jason Gunthorpe
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