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-rw-r--r--libmount/src/tab.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/libmount/src/tab.c b/libmount/src/tab.c
index 9c49ec885..f72dcf1c2 100644
--- a/libmount/src/tab.c
+++ b/libmount/src/tab.c
@@ -1577,7 +1577,9 @@ int mnt_table_is_fs_mounted(struct libmnt_table *tb, struct libmnt_fs *fstab_fs)
}
if (root) {
- if (strcmp(mnt_fs_get_fstype(fs), "cifs") == 0) {
+ const char *fstype = mnt_fs_get_fstype(fs);
+
+ if (fstype && strcmp(fstype, "cifs") == 0) {
const char *unc_subdir = get_cifs_unc_subdir_path(src);
const char *path_on_fs = mnt_fs_get_root(fs);
if (!unc_subdir || !path_on_fs || !streq_paths(unc_subdir, path_on_fs))