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-rw-r--r--fs/super.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/super.c b/fs/super.c
index 2c6cdea2ab2d..5a1f384ffc74 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -865,7 +865,8 @@ int reconfigure_super(struct fs_context *fc)
if (fc->sb_flags_mask & SB_RDONLY) {
#ifdef CONFIG_BLOCK
- if (!(fc->sb_flags & SB_RDONLY) && bdev_read_only(sb->s_bdev))
+ if (!(fc->sb_flags & SB_RDONLY) && sb->s_bdev &&
+ bdev_read_only(sb->s_bdev))
return -EACCES;
#endif