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

[Peter Maydell]

On 20 September 2015 at 22:34, Jonathan Neuschäfer
<address@hidden> wrote:
> On Fri, Sep 04, 2015 at 01:48:39PM +0100, Peter Maydell wrote:
>> On 3 September 2015 at 06:27, Jonathan Neuschäfer <address@hidden> 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 <address@hidden>
>>
>> Reviewed-by: Peter Maydell <address@hidden>
>
> 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.

thanks
-- MPM