Commit 2b0ada2b authored by Anton Altaparmakov's avatar Anton Altaparmakov
Browse files

NTFS: Fix handling of valid but empty mapping pairs array in 


      fs/ntfs/runlist.c::ntfs_mapping_pairs_decompress().

Signed-off-by: default avatarAnton Altaparmakov <aia21@cantab.net>
parent 8bb73521

fs/ntfs/ChangeLog

+2 −0
Original line number Diff line number Diff line
@@ -46,6 +46,8 @@ ToDo/Notes: 
	- Fix two nasty runlist merging bugs that had gone unnoticed so far.

	  Thanks to Stefano Picerno for the bug report.

	- Remove two bogus BUG_ON()s from fs/ntfs/mft.c.

	- Fix handling of valid but empty mapping pairs array in

	  fs/ntfs/runlist.c::ntfs_mapping_pairs_decompress().



2.1.23 - Implement extension of resident files and make writing safe as well as

	 many bug fixes, cleanups, and enhancements...

fs/ntfs/runlist.c

+3 −0
Original line number Diff line number Diff line
@@ -760,6 +760,9 @@ runlist_element *ntfs_mapping_pairs_decompress(const ntfs_volume *vol, 
		ntfs_error(vol->sb, "Corrupt attribute.");

		return ERR_PTR(-EIO);

	}

	/* If the mapping pairs array is valid but empty, nothing to do. */

	if (!vcn && !*buf)

		return old_rl;

	/* Current position in runlist array. */

	rlpos = 0;

	/* Allocate first page and set current runlist size to one page. */