diff options
| -rw-r--r-- | fs/ext4/inode.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 269763b6636..7cce96a6935 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2179,7 +2179,21 @@ static void ext4_free_data(handle_t *handle, struct inode *inode, if (this_bh) { BUFFER_TRACE(this_bh, "call ext4_journal_dirty_metadata"); - ext4_journal_dirty_metadata(handle, this_bh); + + /* + * The buffer head should have an attached journal head at this + * point. However, if the data is corrupted and an indirect + * block pointed to itself, it would have been detached when + * the block was cleared. Check for this instead of OOPSing. + */ + if (bh2jh(this_bh)) + ext4_journal_dirty_metadata(handle, this_bh); + else + ext4_error(inode->i_sb, __func__, + "circular indirect block detected, " + "inode=%lu, block=%llu", + inode->i_ino, + (unsigned long long) this_bh->b_blocknr); } } |