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From: Tim Deegan <tim@xen.org>
To: xen-devel@lists.xen.org
Cc: Liu Jinsong <jinsong.liu@intel.com>, Jan Beulich <jbeulich@suse.com>
Subject: [PATCH 6/9] cpufreq: missing check of copy_from_guest()
Date: Thu, 12 Sep 2013 13:15:27 +0100	[thread overview]
Message-ID: <1378988130-24172-7-git-send-email-tim@xen.org> (raw)
In-Reply-To: <1378988130-24172-1-git-send-email-tim@xen.org>

Coverity CID 1055131
Coverity CID 1055132

Signed-off-by: Tim Deegan <tim@xen.org>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Liu Jinsong <jinsong.liu@intel.com>
---
 xen/drivers/cpufreq/cpufreq.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/xen/drivers/cpufreq/cpufreq.c b/xen/drivers/cpufreq/cpufreq.c
index 0de5d41..ab66884 100644
--- a/xen/drivers/cpufreq/cpufreq.c
+++ b/xen/drivers/cpufreq/cpufreq.c
@@ -471,8 +471,12 @@ int set_px_pminfo(uint32_t acpi_id, struct xen_processor_performance *dom0_px_in
             ret = -ENOMEM;
             goto out;
         }
-        copy_from_guest(pxpt->states, dom0_px_info->states, 
-                                      dom0_px_info->state_count);
+        if ( copy_from_guest(pxpt->states, dom0_px_info->states,
+                             dom0_px_info->state_count) )
+        {
+            ret = -EFAULT;
+            goto out;
+        }
         pxpt->state_count = dom0_px_info->state_count;
 
         if ( cpufreq_verbose )
-- 
1.7.10.4

  parent reply	other threads:[~2013-09-12 12:15 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-12 12:15 More Coverity-reported issues Tim Deegan
2013-09-12 12:15 ` [PATCH 1/9] x86/mm: Don't dereference p2m pointer before NULL check Tim Deegan
2013-09-12 12:15 ` [PATCH 2/9] passthrough/amd: Drop unnecessary lock lookup Tim Deegan
2013-09-12 13:35   ` Jan Beulich
2013-09-12 12:15 ` [PATCH 3/9] passthrough/amd: Missing 'break' Tim Deegan
2013-09-17 15:04   ` Suravee Suthikulpanit
2013-09-12 12:15 ` [PATCH 4/9] passthrough/amd: Shuffle declaration Tim Deegan
2013-09-12 13:38   ` Jan Beulich
2013-09-12 13:44     ` Tim Deegan
2013-09-12 14:03       ` Jan Beulich
2013-09-17 15:19         ` Suravee Suthikulpanit
2013-09-12 12:15 ` [PATCH 5/9] cpufreq: avoid integer overflows Tim Deegan
2013-09-12 13:49   ` Jan Beulich
2013-09-13  7:18   ` Liu, Jinsong
2013-09-12 12:15 ` Tim Deegan [this message]
2013-09-12 13:54   ` [PATCH 6/9] cpufreq: missing check of copy_from_guest() Jan Beulich
2013-09-13  7:18   ` Liu, Jinsong
2013-09-12 12:15 ` [PATCH 7/9] ehci-dbgp: avoid division by zero Tim Deegan
2013-09-12 13:55   ` Jan Beulich
2013-09-12 12:15 ` [PATCH 8/9] ehci-dbgp: drop dead code Tim Deegan
2013-09-12 14:01   ` Jan Beulich
2013-09-12 12:15 ` [PATCH 9/9] acpi/pmstat: fix check for empty name strings Tim Deegan
2013-09-12 14:02   ` Jan Beulich
2013-09-12 13:11 ` More Coverity-reported issues Andrew Cooper

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