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| author | Halil Pasic <pasic@linux.ibm.com> | 2020-07-23 18:27:17 +0200 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2020-07-24 08:49:53 +0200 |
| commit | d6645483285feaa0aa26fe2b0c3bac6989250d2f (patch) | |
| tree | 98de624a3e917e0c8ce7da15c9f72ded4112de8d | |
| parent | d1bb69db4ceb6897ef6a17bf263146b53a123632 (diff) | |
| download | qemu-d6645483285feaa0aa26fe2b0c3bac6989250d2f.zip qemu-d6645483285feaa0aa26fe2b0c3bac6989250d2f.tar.gz qemu-d6645483285feaa0aa26fe2b0c3bac6989250d2f.tar.bz2 | |
s390x/s390-virtio-ccw: fix loadparm property getter
The function machine_get_loadparm() is supposed to produce a C-string,
that is a NUL-terminated one, but it does not. ElectricFence can detect
this problem if the loadparm machine property is used.
Let us make the returned string a NUL-terminated one.
Fixes: 7104bae9de ("hw/s390x: provide loadparm property for the machine")
Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20200723162717.88485-1-pasic@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
| -rw-r--r-- | hw/s390x/s390-virtio-ccw.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 8cc2f25..403d30e 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -701,8 +701,12 @@ bool hpage_1m_allowed(void) static char *machine_get_loadparm(Object *obj, Error **errp) { S390CcwMachineState *ms = S390_CCW_MACHINE(obj); + char *loadparm_str; - return g_memdup(ms->loadparm, sizeof(ms->loadparm)); + /* make a NUL-terminated string */ + loadparm_str = g_memdup(ms->loadparm, sizeof(ms->loadparm) + 1); + loadparm_str[sizeof(ms->loadparm)] = 0; + return loadparm_str; } static void machine_set_loadparm(Object *obj, const char *val, Error **errp) |