Re: [PATCH 4.19 09/56] btrfs: inode: Verify inode mode to avoid NULL pointer dereference

[Greg Kroah-Hartman]

On Tue, Aug 04, 2020 at 09:11:32AM +0200, Pavel Machek wrote:
> Hi!
> 
> 
> > @@ -6993,6 +7010,14 @@ struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
> >  	extent_start = found_key.offset;
> >  	if (found_type == BTRFS_FILE_EXTENT_REG ||
> >  	    found_type == BTRFS_FILE_EXTENT_PREALLOC) {
> > +		/* Only regular file could have regular/prealloc extent */
> > +		if (!S_ISREG(inode->vfs_inode.i_mode)) {
> > +			ret = -EUCLEAN;
> > +			btrfs_crit(fs_info,
> > +		"regular/prealloc extent found for non-regular inode %llu",
> > +				   btrfs_ino(inode));
> > +			goto out;
> > +		}
> 
> This sets ret, but function returns err. Fix was already submitted.

What is the git commit id of that fix?

thanks,

greg k-h