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Date: Tue, 4 Apr 2017 18:15:01 +0200
From: Joerg Roedel <joro@...tes.org>
To: Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>
Cc: x86@...nel.org, Dmitry Safonov <0x7f454c46@...il.com>,
Dave Hansen <dave.hansen@...ux.intel.com>,
Joerg Roedel <jroedel@...e.de>, linux-kernel@...r.kernel.org,
Borislav Petkov <bp@...e.de>
Subject: [PATCH] x86/signals: Fix lower/upper bound reporting in compat siginfo
From: Joerg Roedel <jroedel@...e.de>
Put the right values from the original siginfo into the
userspace compat-siginfo.
This fixes the 32-bit mpx tabletest on a 64-bit kernel.
Fixes: a4455082dc6f0 ('x86/signals: Add missing signal_compat code for x86 features')
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@...e.de>
---
arch/x86/kernel/signal_compat.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/signal_compat.c b/arch/x86/kernel/signal_compat.c
index ec1f756..71beb28 100644
--- a/arch/x86/kernel/signal_compat.c
+++ b/arch/x86/kernel/signal_compat.c
@@ -151,8 +151,8 @@ int __copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from,
if (from->si_signo == SIGSEGV) {
if (from->si_code == SEGV_BNDERR) {
- compat_uptr_t lower = (unsigned long)&to->si_lower;
- compat_uptr_t upper = (unsigned long)&to->si_upper;
+ compat_uptr_t lower = (unsigned long)from->si_lower;
+ compat_uptr_t upper = (unsigned long)from->si_upper;
put_user_ex(lower, &to->si_lower);
put_user_ex(upper, &to->si_upper);
}
--
1.9.1
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