diff options
| -rw-r--r-- | fs/ubifs/journal.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c index 1406765c3ef9..cef0d76d490a 100644 --- a/fs/ubifs/journal.c +++ b/fs/ubifs/journal.c @@ -1393,7 +1393,16 @@ int ubifs_jnl_truncate(struct ubifs_info *c, const struct inode *inode, else if (err) goto out_free; else { - if (le32_to_cpu(dn->size) <= dlen) + int dn_len = le32_to_cpu(dn->size); + + if (dn_len <= 0 || dn_len > UBIFS_BLOCK_SIZE) { + ubifs_err(c, "bad data node (block %u, inode %lu)", + blk, inode->i_ino); + ubifs_dump_node(c, dn); + goto out_free; + } + + if (dn_len <= dlen) dlen = 0; /* Nothing to do */ else { err = truncate_data_node(c, inode, blk, dn, &dlen); |