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Subject[tip:x86/urgent] x86_32, signal: Fix vdso rt_sigreturn
Commit-ID:  6ba19a670c8b604e9802d30b511e6a4778118592
Gitweb: http://git.kernel.org/tip/6ba19a670c8b604e9802d30b511e6a4778118592
Author: Andy Lutomirski <luto@amacapital.net>
AuthorDate: Sat, 21 Jun 2014 07:31:55 -0700
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Mon, 23 Jun 2014 15:54:42 -0700

x86_32, signal: Fix vdso rt_sigreturn

This commit:

commit 6f121e548f83674ab4920a4e60afb58d4f61b829
Author: Andy Lutomirski <luto@amacapital.net>
Date: Mon May 5 12:19:34 2014 -0700

x86, vdso: Reimplement vdso.so preparation in build-time C

Contained this obvious typo:

- restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn);
+ restorer = current->mm->context.vdso +
+ selected_vdso32->sym___kernel_sigreturn;

Note the missing 'rt_' in the new code. Fix it.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/r/1eb40ad923acde2e18357ef2832867432e70ac42.1403361010.git.luto@amacapital.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/kernel/signal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index a0da58d..2851d63 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -363,7 +363,7 @@ static int __setup_rt_frame(int sig, struct ksignal *ksig,

/* Set up to return from userspace. */
restorer = current->mm->context.vdso +
- selected_vdso32->sym___kernel_sigreturn;
+ selected_vdso32->sym___kernel_rt_sigreturn;
if (ksig->ka.sa.sa_flags & SA_RESTORER)
restorer = ksig->ka.sa.sa_restorer;
put_user_ex(restorer, &frame->pretcode);

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