From: Jan Kara jack@suse.cz
commit 70bfb3a8d661d4fdc742afc061b88a7f3fc9f500 upstream.
When a file expansion failed because we didn't have enough space for indirect extents make sure we truncate extents created so far so that we don't leave extents beyond EOF.
CC: stable@vger.kernel.org Signed-off-by: Jan Kara jack@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/udf/inode.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)
--- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -528,8 +528,10 @@ static int udf_do_extend_file(struct ino }
if (fake) { - udf_add_aext(inode, last_pos, &last_ext->extLocation, - last_ext->extLength, 1); + err = udf_add_aext(inode, last_pos, &last_ext->extLocation, + last_ext->extLength, 1); + if (err < 0) + goto out_err; count++; } else { struct kernel_lb_addr tmploc; @@ -563,7 +565,7 @@ static int udf_do_extend_file(struct ino err = udf_add_aext(inode, last_pos, &last_ext->extLocation, last_ext->extLength, 1); if (err) - return err; + goto out_err; count++; } if (new_block_bytes) { @@ -572,7 +574,7 @@ static int udf_do_extend_file(struct ino err = udf_add_aext(inode, last_pos, &last_ext->extLocation, last_ext->extLength, 1); if (err) - return err; + goto out_err; count++; }
@@ -586,6 +588,11 @@ out: return -EIO;
return count; +out_err: + /* Remove extents we've created so far */ + udf_clear_extent_cache(inode); + udf_truncate_extents(inode); + return err; }
/* Extend the final block of the file to final_block_len bytes */