lkml.org 
[lkml]   [2017]   [Aug]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 3/3] ANDROID: binder: fix proc->tsk check.
On Tue, Aug 22, 2017 at 08:49:59AM -0700, Greg KH wrote:
> On Mon, Aug 21, 2017 at 11:48:39AM -0700, John Stultz wrote:
> > On Tue, Aug 8, 2017 at 11:08 AM, Greg KH <gregkh@linuxfoundation.org> wrote:
> > > On Tue, Aug 08, 2017 at 10:34:47AM -0700, John Stultz wrote:
> > >> On Fri, Jul 28, 2017 at 4:56 AM, Martijn Coenen <maco@android.com> wrote:
> > >> > Commit c4ea41ba195d ("binder: use group leader instead of open thread")'
> > >> > was incomplete and didn't update a check in binder_mmap(), causing all
> > >> > mmap() calls into the binder driver to fail.
> > >> >
> > >> > Signed-off-by: Martijn Coenen <maco@android.com>
> > >> > ---
> > >> > drivers/android/binder.c | 2 +-
> > >> > 1 file changed, 1 insertion(+), 1 deletion(-)
> > >> >
> > >> > diff --git a/drivers/android/binder.c b/drivers/android/binder.c
> > >> > index f7665c31feca..831cdd7d197d 100644
> > >> > --- a/drivers/android/binder.c
> > >> > +++ b/drivers/android/binder.c
> > >> > @@ -3362,7 +3362,7 @@ static int binder_mmap(struct file *filp, struct vm_area_struct *vma)
> > >> > const char *failure_string;
> > >> > struct binder_buffer *buffer;
> > >> >
> > >> > - if (proc->tsk != current)
> > >> > + if (proc->tsk != current->group_leader)
> > >> > return -EINVAL;
> > >> >
> > >> > if ((vma->vm_end - vma->vm_start) > SZ_4M)
> > >>
> > >> Tested-by: John Stultz <john.stultz@linaro.org>
> > >>
> > >> As Amit already confirmed, this resolves the wifi and bluetooth
> > >> regression I was seeing with Android using 4.13-rc2.
> > >>
> > >> Though I've not seen it show up in Linus' tree yet, so I wanted to
> > >> pester folks so it gets into 4.13-rc (its given me some slight grief
> > >> trying to bisect down a separate issue).
> > >
> > > I will queue this up in the next few days, I need to resolve the patches
> > > that have been sent to me for this, sorry for the delay.
> >
> > Hey Greg,
> > Sorry to pester you again on this, but this seems to still be
> > missing in -rc6. Don't want it to slip by.
>
> It's not lost, just on the bottom of my queue, will catch up with it
> next week...

Now queued up, sorry for the delay.

greg k-h

\
 
 \ /
  Last update: 2017-08-23 03:43    [W:0.071 / U:0.484 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site