| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 54/75] sparc64: Fix sparc64_set_context stack handling. | Date | Wed, 22 Jun 2016 15:41:16 -0700 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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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))))
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