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-rw-r--r--src/lxc/lxc_container.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c
index b30895ead..8e5e46617 100644
--- a/src/lxc/lxc_container.c
+++ b/src/lxc/lxc_container.c
@@ -1523,6 +1523,14 @@ static int lxcContainerSetupPivotRoot(virDomainDefPtr vmDef,
if (lxcContainerPivotRoot(root) < 0)
goto cleanup;
+#if HAVE_SELINUX
+ /* Some versions of Linux kernel don't let you overmount
+ * the selinux filesystem, so make sure we kill it first
+ */
+ if (lxcContainerUnmountSubtree(SELINUX_MOUNT, false) < 0)
+ goto cleanup;
+#endif
+
/* If we have the root source being '/', then we need to
* get rid of any existing stuff under /proc, /sys & /tmp.
* We need new namespace aware versions of those. We must
@@ -1608,6 +1616,14 @@ static int lxcContainerSetupExtraMounts(virDomainDefPtr vmDef,
if (lxcContainerIdentifyCGroups(&mounts, &nmounts, &cgroupRoot) < 0)
return -1;
+#if HAVE_SELINUX
+ /* Some versions of Linux kernel don't let you overmount
+ * the selinux filesystem, so make sure we kill it first
+ */
+ if (lxcContainerUnmountSubtree(SELINUX_MOUNT, false) < 0)
+ goto cleanup;
+#endif
+
/* Gets rid of any existing stuff under /proc, since we need new
* namespace aware versions of those. We must do /proc second
* otherwise we won't find /proc/mounts :-) */