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-rw-r--r--kernel/fs/nilfs2/the_nilfs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/fs/nilfs2/the_nilfs.c b/kernel/fs/nilfs2/the_nilfs.c
index 69bd801af..37e49cb2a 100644
--- a/kernel/fs/nilfs2/the_nilfs.c
+++ b/kernel/fs/nilfs2/the_nilfs.c
@@ -443,7 +443,7 @@ static int nilfs_valid_sb(struct nilfs_super_block *sbp)
if (!sbp || le16_to_cpu(sbp->s_magic) != NILFS_SUPER_MAGIC)
return 0;
bytes = le16_to_cpu(sbp->s_bytes);
- if (bytes > BLOCK_SIZE)
+ if (bytes < sumoff + 4 || bytes > BLOCK_SIZE)
return 0;
crc = crc32_le(le32_to_cpu(sbp->s_crc_seed), (unsigned char *)sbp,
sumoff);