Re: [Qemu-devel] [PATCH] linux-user: fix cmsg conversion in case of multiple headers

[Riku Voipio <riku.voipio@iki.fi>]

On Mon, Sep 21, 2015 at 06:13:57AM -0700, Peter Maydell wrote:
> On 20 September 2015 at 22:34, Jonathan Neuschäfer
> <j.neuschaefer@gmx.net> wrote:
> > On Fri, Sep 04, 2015 at 01:48:39PM +0100, Peter Maydell wrote:
> >> On 3 September 2015 at 06:27, Jonathan Neuschäfer <j.neuschaefer@gmx.net> wrote:
> >> > Currently, __target_cmsg_nxthdr compares a pointer derived from
> >> > target_cmsg against the msg_control field of target_msgh (through
> >> > subtraction).  This failed for me when emulating i386 code under x86_64,
> >> > because pointers in the host address space and pointers in the guest
> >> > address space were not the same.  This patch passes the initial value of
> >> > target_cmsg into __target_cmsg_nxthdr.
> >> >
> >> > I found and fixed two more related bugs:
> >> > - __target_cmsg_nxthdr now returns the new cmsg pointer instead of the
> >> >   old one.
> >> > - tgt_space (in host_to_target_cmsg) doesn't count "sizeof (struct
> >> >   target_cmsghdr)" twice anymore.
> >> >
> >> > Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
> >>
> >> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
> >
> > Ping.
> >
> > What's the status of this patch?
 
> It's waiting for Riku to wake up and put it into a linux-user
> pull request.

My intention was to gather a pull request before this travel, but
alas I was stuck with other stuff. I'll get it done next week latest.

Riku