From: Hideo Saito <saito@densan.co.jp>
Date: Thu, 15 May 2008 04:30:05 +0000 (+0900)
Subject: sh: Fix up thread info pointer in syscall_badsys resume path.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=561c2bccc7c5cf3d42f38f1f4d61c7b609d4631e;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

sh: Fix up thread info pointer in syscall_badsys resume path.

Entry to resume_userspace expects r8 to contain current_thread_info,
which happens in all paths except for syscall_badsys, where r8 was
being inadvertently trampled. Reload it before the branch.

Signed-off-by: Hideo Saito <saito@densan.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---

diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
index 926b2e7b11c1..9a1837d5b54e 100644
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -262,6 +262,7 @@ __restore_all:
 
 	.align	2
 syscall_badsys:			! Bad syscall number
+	get_current_thread_info r8, r0
 	mov	#-ENOSYS, r0
 	bra	resume_userspace
 	 mov.l	r0, @(OFF_R0,r15)	! Return value