From bf904b238d7fa1a6eb82427ec803170f84c0b2e8 Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky <pfalcon@users.sourceforge.net>
Date: Sat, 13 Feb 2016 21:53:43 +0200
Subject: [PATCH] extmod/fsusermount: umount: Add NULL pointer checks.
---
extmod/fsusermount.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/extmod/fsusermount.c b/extmod/fsusermount.c
index 677961ea3..3265465c5 100644
--- a/extmod/fsusermount.c
+++ b/extmod/fsusermount.c
@@ -160,14 +160,14 @@ STATIC mp_obj_t fatfs_umount(mp_obj_t bdev_or_path_in) {
const char *mnt_str = mp_obj_str_get_data(bdev_or_path_in, &mnt_len);
for (; i < MP_ARRAY_SIZE(MP_STATE_PORT(fs_user_mount)); ++i) {
fs_user_mount_t *vfs = MP_STATE_PORT(fs_user_mount)[i];
- if (!memcmp(mnt_str, vfs->str, mnt_len + 1)) {
+ if (vfs != NULL && !memcmp(mnt_str, vfs->str, mnt_len + 1)) {
break;
}
}
} else {
for (; i < MP_ARRAY_SIZE(MP_STATE_PORT(fs_user_mount)); ++i) {
fs_user_mount_t *vfs = MP_STATE_PORT(fs_user_mount)[i];
- if (bdev_or_path_in == vfs->readblocks[1]) {
+ if (vfs != NULL && bdev_or_path_in == vfs->readblocks[1]) {
break;
}
}
--
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