On Sat, Jun 20, 2020 at 08:35:38AM +0200, Christoph Hellwig wrote:
> On Fri, Jun 19, 2020 at 09:17:00PM +, Luis Chamberlain wrote:
> > On Thu, Jun 18, 2020 at 04:46:27PM +0200, Christoph Hellwig wrote:
> > > --- a/kernel/exit.c
> > > +++ b/kernel/exit.c
> > > @@ -1626,6 +1626,22 @@ long kernel_
On Fri, Jun 19, 2020 at 09:17:00PM +, Luis Chamberlain wrote:
> On Thu, Jun 18, 2020 at 04:46:27PM +0200, Christoph Hellwig wrote:
> > --- a/kernel/exit.c
> > +++ b/kernel/exit.c
> > @@ -1626,6 +1626,22 @@ long kernel_wait4(pid_t upid, int __user *stat_addr,
> > int options,
> > return ret
On Thu, Jun 18, 2020 at 04:46:27PM +0200, Christoph Hellwig wrote:
> --- a/kernel/exit.c
> +++ b/kernel/exit.c
> @@ -1626,6 +1626,22 @@ long kernel_wait4(pid_t upid, int __user *stat_addr,
> int options,
> return ret;
> }
>
> +int kernel_wait(pid_t pid, int *stat)
> +{
> + struct wait
Add a helper that waits for a pid and stores the status in the passed
in kernel pointer. Use it to fix the usage of kernel_wait4 in
call_usermodehelper_exec_sync that only happens to work due to the
implicit set_fs(KERNEL_DS) for kernel threads.
Signed-off-by: Christoph Hellwig
---
include/linu
Add a helper that waits for a pid and stores the status in the passed
in kernel pointer. Use it to fix the usage of kernel_wait4 in
call_usermodehelper_exec_sync that only happens to work due to the
implicit set_fs(KERNEL_DS) for kernel threads.
Signed-off-by: Christoph Hellwig
---
include/linu
