Hi,

On Sun, Jun 23, 2019 at 10:26:50PM +0200, gregkh@linuxfoundation.org wrote:

The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

That's OK, it's not needed on 4.9-stable because the include was already added when ssbd was backported. Ditto for 4.14.

Regards,

Anisse

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From adeaa21a4b6954e878f3f7d1c5659ed9c1fe567a Mon Sep 17 00:00:00 2001 From: Anisse Astier aastier@freebox.fr Date: Mon, 17 Jun 2019 15:22:21 +0200 Subject: [PATCH] arm64: ssbd: explicitly depend on <linux/prctl.h>

Fix ssbd.c which depends implicitly on asm/ptrace.h including linux/prctl.h (through for example linux/compat.h, then linux/time.h, linux/seqlock.h, linux/spinlock.h and linux/irqflags.h), and uses PR_SPEC* defines.

This is an issue since we'll soon be removing the include from asm/ptrace.h.

Fixes: 9cdc0108baa8 ("arm64: ssbd: Add prctl interface for per-thread mitigation") Cc: stable@vger.kernel.org Signed-off-by: Anisse Astier aastier@freebox.fr Signed-off-by: Will Deacon will.deacon@arm.com

diff --git a/arch/arm64/kernel/ssbd.c b/arch/arm64/kernel/ssbd.c index 885f13e58708..52cfc6148355 100644 --- a/arch/arm64/kernel/ssbd.c +++ b/arch/arm64/kernel/ssbd.c @@ -5,6 +5,7 @@ #include <linux/compat.h> #include <linux/errno.h> +#include <linux/prctl.h> #include <linux/sched.h> #include <linux/sched/task_stack.h> #include <linux/thread_info.h>