2021-11-12 18:07:28

by Todd Kjos

Subject: [PATCH] binder: fix test regression due to sender_euid change

This is a partial revert of commit
29bc22ac5e5b ("binder: use euid from cred instead of using task").
Setting sender_euid using proc->cred caused some Android system test
regressions that need further investigation. It is a partial
reversion because subsequent patches rely on proc->cred.

Cc: [email protected] # 4.4+
Fixes: 29bc22ac5e5b ("binder: use euid from cred instead of using task")
Signed-off-by: Todd Kjos <[email protected]>
Change-Id: I9b1769a3510fed250bb21859ef8beebabe034c66
---
- the issue was introduced in 5.16-rc1, so please apply to 5.16
- this should apply cleanly to all stable branches back to 4.4
that contain "binder: use euid from cred instead of using task"


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 49fb74196d02..cffbe57a8e08 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -2710,7 +2710,7 @@ static void binder_transaction(struct binder_proc *proc,
t->from = thread;
else
t->from = NULL;
- t->sender_euid = proc->cred->euid;
+ t->sender_euid = task_euid(proc->tsk);
t->to_proc = target_proc;
t->to_thread = target_thread;
t->code = tr->code;
--
2.34.0.rc1.387.gb447b232ab-goog

2021-11-16 09:37:34

by Christian Brauner

Subject: Re: [PATCH] binder: fix test regression due to sender_euid change

On Fri, Nov 12, 2021 at 10:07:20AM -0800, Todd Kjos wrote:
> This is a partial revert of commit
> 29bc22ac5e5b ("binder: use euid from cred instead of using task").
> Setting sender_euid using proc->cred caused some Android system test
> regressions that need further investigation. It is a partial
> reversion because subsequent patches rely on proc->cred.
>
> Cc: [email protected] # 4.4+
> Fixes: 29bc22ac5e5b ("binder: use euid from cred instead of using task")
> Signed-off-by: Todd Kjos <[email protected]>
> Change-Id: I9b1769a3510fed250bb21859ef8beebabe034c66
> ---

Acked-by: Christian Brauner <[email protected]>

2021-11-19 23:00:45

by Paul Moore

Subject: Re: [PATCH] binder: fix test regression due to sender_euid change

On Fri, Nov 12, 2021 at 1:07 PM Todd Kjos <[email protected]> wrote:
>
> This is a partial revert of commit
> 29bc22ac5e5b ("binder: use euid from cred instead of using task").
> Setting sender_euid using proc->cred caused some Android system test
> regressions that need further investigation. It is a partial
> reversion because subsequent patches rely on proc->cred.
>
> Cc: [email protected] # 4.4+
> Fixes: 29bc22ac5e5b ("binder: use euid from cred instead of using task")
> Signed-off-by: Todd Kjos <[email protected]>
> Change-Id: I9b1769a3510fed250bb21859ef8beebabe034c66
> ---
> - the issue was introduced in 5.16-rc1, so please apply to 5.16
> - this should apply cleanly to all stable branches back to 4.4
> that contain "binder: use euid from cred instead of using task"
>
>
> drivers/android/binder.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

This looks okay to me. I assume this is going in via GregKH's tree?

Acked-by: Paul Moore <[email protected]>

> diff --git a/drivers/android/binder.c b/drivers/android/binder.c
> index 49fb74196d02..cffbe57a8e08 100644
> --- a/drivers/android/binder.c
> +++ b/drivers/android/binder.c
> @@ -2710,7 +2710,7 @@ static void binder_transaction(struct binder_proc *proc,
> t->from = thread;
> else
> t->from = NULL;
> - t->sender_euid = proc->cred->euid;
> + t->sender_euid = task_euid(proc->tsk);
> t->to_proc = target_proc;
> t->to_thread = target_thread;
> t->code = tr->code;
> --
> 2.34.0.rc1.387.gb447b232ab-goog

--
paul moore
http://www.paul-moore.com

2021-11-19 23:40:15

by Todd Kjos

Subject: Re: [PATCH] binder: fix test regression due to sender_euid change

On Fri, Nov 19, 2021 at 3:00 PM Paul Moore <[email protected]> wrote:
>
> On Fri, Nov 12, 2021 at 1:07 PM Todd Kjos <[email protected]> wrote:
> >
> > This is a partial revert of commit
> > 29bc22ac5e5b ("binder: use euid from cred instead of using task").
> > Setting sender_euid using proc->cred caused some Android system test
> > regressions that need further investigation. It is a partial
> > reversion because subsequent patches rely on proc->cred.
> >
> > Cc: [email protected] # 4.4+
> > Fixes: 29bc22ac5e5b ("binder: use euid from cred instead of using task")
> > Signed-off-by: Todd Kjos <[email protected]>
> > Change-Id: I9b1769a3510fed250bb21859ef8beebabe034c66

Greg, I neglected to remove the "Change-Id" from my Android pre-submit
testing. Can you remove that, or would you like me to resubmit without
it?

> > ---
> > - the issue was introduced in 5.16-rc1, so please apply to 5.16
> > - this should apply cleanly to all stable branches back to 4.4
> > that contain "binder: use euid from cred instead of using task"
> >
> >
> > drivers/android/binder.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
>
> This looks okay to me. I assume this is going in via GregKH's tree?
>
> Acked-by: Paul Moore <[email protected]>
>
> > diff --git a/drivers/android/binder.c b/drivers/android/binder.c
> > index 49fb74196d02..cffbe57a8e08 100644
> > --- a/drivers/android/binder.c
> > +++ b/drivers/android/binder.c
> > @@ -2710,7 +2710,7 @@ static void binder_transaction(struct binder_proc *proc,
> > t->from = thread;
> > else
> > t->from = NULL;
> > - t->sender_euid = proc->cred->euid;
> > + t->sender_euid = task_euid(proc->tsk);
> > t->to_proc = target_proc;
> > t->to_thread = target_thread;
> > t->code = tr->code;
> > --
> > 2.34.0.rc1.387.gb447b232ab-goog
>
> --
> paul moore
> http://www.paul-moore.com

2021-11-24 09:58:53

by Greg Kroah-Hartman

Subject: Re: [PATCH] binder: fix test regression due to sender_euid change

On Fri, Nov 19, 2021 at 03:39:59PM -0800, Todd Kjos wrote:
> On Fri, Nov 19, 2021 at 3:00 PM Paul Moore <[email protected]> wrote:
> >
> > On Fri, Nov 12, 2021 at 1:07 PM Todd Kjos <[email protected]> wrote:
> > >
> > > This is a partial revert of commit
> > > 29bc22ac5e5b ("binder: use euid from cred instead of using task").
> > > Setting sender_euid using proc->cred caused some Android system test
> > > regressions that need further investigation. It is a partial
> > > reversion because subsequent patches rely on proc->cred.
> > >
> > > Cc: [email protected] # 4.4+
> > > Fixes: 29bc22ac5e5b ("binder: use euid from cred instead of using task")
> > > Signed-off-by: Todd Kjos <[email protected]>
> > > Change-Id: I9b1769a3510fed250bb21859ef8beebabe034c66
>
> Greg, I neglected to remove the "Change-Id" from my Android pre-submit
> testing. Can you remove that, or would you like me to resubmit without
> it?

Sorry, I missed it too. It's already in my tree, no need to worry about
it.

greg k-h