| From | Jiri Slaby <> | Subject | [PATCH 3.12 06/88] sparc64: Fix sparc64_set_context stack handling. | Date | Thu, 14 Jul 2016 10:14:58 +0200 |
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From: "David S. Miller" <davem@davemloft.net>
3.12-stable review patch. If anyone has any objections, please let me know.
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[ 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: Jiri Slaby <jslaby@suse.cz> --- 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 35923e8abd82..90f08055b7d2 100644 --- a/arch/sparc/kernel/signal_64.c +++ b/arch/sparc/kernel/signal_64.c @@ -49,7 +49,7 @@ 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)))) -- 2.9.1
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