[added to the 4.1 stable tree] sparc64: Fix sparc64_set_context stack handling.
From: Sasha Levin <hidden>
Date: 2016-07-12 03:00:19
Subsystem:
sparc + ultrasparc (sparc/sparc64), the rest · Maintainers:
"David S. Miller", Andreas Larsson, Linus Torvalds
From: "David S. Miller" <davem@davemloft.net> This patch has been added to the 4.1 stable tree. If you have any objections, please let us know. =============== [ Upstream commit 397d1533b6cce0ccb5379542e2e6d079f6936c46 ] Like a signal return, we should use synchronize_user_stack() rather than flush_user_windows(). Reported-by: Ilya Malakhov <redacted> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <redacted> --- arch/sparc/kernel/signal_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c
index d88beff4..39aaec1 100644
--- a/arch/sparc/kernel/signal_64.c
+++ b/arch/sparc/kernel/signal_64.c@@ -52,7 +52,7 @@ asmlinkage void sparc64_set_context(struct pt_regs *regs) unsigned char fenab; int err; - flush_user_windows(); + synchronize_user_stack(); if (get_thread_wsaved() || (((unsigned long)ucp) & (sizeof(unsigned long)-1)) || (!__access_ok(ucp, sizeof(*ucp))))
--
2.5.0