[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 6/9] cpufreq: missing check of copy_from_guest()
Coverity CID 1055131 Coverity CID 1055132 Signed-off-by: Tim Deegan <tim@xxxxxxx> Cc: Jan Beulich <jbeulich@xxxxxxxx> Cc: Liu Jinsong <jinsong.liu@xxxxxxxxx> --- 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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