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23 lines
780 B
Diff
23 lines
780 B
Diff
From 7c6c27ed01f94b9daf7e73414d9f1b58e07bab21 Mon Sep 17 00:00:00 2001
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From: Daniel Micay <danielmicay@gmail.com>
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Date: Tue, 12 May 2015 20:03:43 -0400
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Subject: [PATCH] fix PaX ACCESS_ONCE issue caused by TSYNC backport
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---
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kernel/seccomp.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/kernel/seccomp.c b/kernel/seccomp.c
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index 829a2ca..96b22b5 100644
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--- a/kernel/seccomp.c
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+++ b/kernel/seccomp.c
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@@ -336,7 +336,7 @@ static inline void seccomp_sync_threads(void)
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*/
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put_seccomp_filter(thread);
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smp_mb();
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- ACCESS_ONCE(thread->seccomp.filter) = caller->seccomp.filter;
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+ ACCESS_ONCE_RW(thread->seccomp.filter) = caller->seccomp.filter;
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/*
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* Opt the other thread into seccomp if needed.
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* As threads are considered to be trust-realm
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