diff options
| author | Matthew Daley <mattjd@gmail.com> | 2013-09-10 17:16:02 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2013-09-10 17:16:02 +0200 |
| commit | 546ba2f17008387cf9821df46e6dac04f0883a9b (patch) | |
| tree | bc0b228c04c8527782b1eae7ff4c52c996fcb2e6 /xen/common | |
| parent | 26d8a37c598464cd097fac42640dbf02c4f405f7 (diff) | |
| download | xen-546ba2f17008387cf9821df46e6dac04f0883a9b.tar.gz xen-546ba2f17008387cf9821df46e6dac04f0883a9b.tar.bz2 xen-546ba2f17008387cf9821df46e6dac04f0883a9b.zip | |
sched/arinc653: check for guest data transfer failures
Coverity-ID: 1055121
Coverity-ID: 1055122
Coverity-ID: 1055123
Coverity-ID: 1055124
Signed-off-by: Matthew Daley <mattjd@gmail.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: George Dunlap <george.dunlap@eu.citrix.com>
Acked-by: Keir Fraser <keir@xen.org>
Diffstat (limited to 'xen/common')
| -rw-r--r-- | xen/common/sched_arinc653.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/xen/common/sched_arinc653.c b/xen/common/sched_arinc653.c index 63ddb82bc6..2502192226 100644 --- a/xen/common/sched_arinc653.c +++ b/xen/common/sched_arinc653.c @@ -635,12 +635,21 @@ a653sched_adjust_global(const struct scheduler *ops, switch ( sc->cmd ) { case XEN_SYSCTL_SCHEDOP_putinfo: - copy_from_guest(&local_sched, sc->u.sched_arinc653.schedule, 1); + if ( copy_from_guest(&local_sched, sc->u.sched_arinc653.schedule, 1) ) + { + rc = -EFAULT; + break; + } + rc = arinc653_sched_set(ops, &local_sched); break; case XEN_SYSCTL_SCHEDOP_getinfo: rc = arinc653_sched_get(ops, &local_sched); - copy_to_guest(sc->u.sched_arinc653.schedule, &local_sched, 1); + if ( rc ) + break; + + if ( copy_to_guest(sc->u.sched_arinc653.schedule, &local_sched, 1) ) + rc = -EFAULT; break; } |