| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1413493335-6110-1-git-send-email-boris.ostrovsky@oracle.com>
Date: Thu, 16 Oct 2014 17:02:15 -0400
From: Boris Ostrovsky <boris.ostrovsky@...cle.com>
To: david.vrabel@...rix.com, konrad.wilk@...cle.com
Cc: cl@...ux.com, linux-kernel@...r.kernel.org,
xen-devel@...ts.xen.org, boris.ostrovsky@...cle.com
Subject: [PATCH] xen/time: Fix incorrect per_cpu accessor in xen_clocksource_read()
Commit 89cbc76768c2 ("x86: Replace __get_cpu_var uses") replaced
__get_cpu_var() with this_cpu_ptr() in xen_clocksource_read() in such a
way that instead of accessing a structure pointed to by a per-cpu pointer
we are trying to get to a per-cpu structure.
__this_cpu_read() of the pointer is the more appropriate accessor.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>
---
arch/x86/xen/time.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index a1d430b..f473d26 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -158,7 +158,7 @@ cycle_t xen_clocksource_read(void)
cycle_t ret;
preempt_disable_notrace();
- src = this_cpu_ptr(&xen_vcpu->time);
+ src = &__this_cpu_read(xen_vcpu)->time;
ret = pvclock_clocksource_read(src);
preempt_enable_notrace();
return ret;
--
1.8.1.4
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists