| From foo@baz Mon Jun 20 10:48:29 PDT 2016 |
| From: "David S. Miller" <davem@davemloft.net> |
| Date: Tue, 1 Mar 2016 00:25:32 -0500 |
| Subject: sparc64: Fix sparc64_set_context stack handling. |
| |
| From: "David S. Miller" <davem@davemloft.net> |
| |
| [ Upstream commit 397d1533b6cce0ccb5379542e2e6d079f6936c46 ] |
| |
| Like a signal return, we should use synchronize_user_stack() rather |
| than flush_user_windows(). |
| |
| Reported-by: Ilya Malakhov <ilmalakhovthefirst@gmail.com> |
| Signed-off-by: David S. Miller <davem@davemloft.net> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| arch/sparc/kernel/signal_64.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/arch/sparc/kernel/signal_64.c |
| +++ b/arch/sparc/kernel/signal_64.c |
| @@ -52,7 +52,7 @@ asmlinkage void sparc64_set_context(stru |
| 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)))) |
