1. 04 Sep, 2018 1 commit
  2. 01 Sep, 2018 2 commits
    • Theodore Ts'o's avatar
      ext4: recalucate superblock checksum after updating free blocks/inodes · 4274f516
      Theodore Ts'o authored
      When mounting the superblock, ext4_fill_super() calculates the free
      blocks and free inodes and stores them in the superblock.  It's not
      strictly necessary, since we don't use them any more, but it's nice to
      keep them roughly aligned to reality.
      Since it's not critical for file system correctness, the code doesn't
      call ext4_commit_super().  The problem is that it's in
      ext4_commit_super() that we recalculate the superblock checksum.  So
      if we're not going to call ext4_commit_super(), we need to call
      ext4_superblock_csum_set() to make sure the superblock checksum is
      Most of the time, this doesn't matter, since we end up calling
      ext4_commit_super() very soon thereafter, and definitely by the time
      the file system is unmounted.  However, it doesn't work in this
      mke2fs -Fq -t ext4 /dev/vdc 128M
      mount /dev/vdc /vdc
      cp xfstests/git-versions /vdc
      godown /vdc
      umount /vdc
      mount /dev/vdc
      tune2fs -l /dev/vdc
      With this commit, the "tune2fs -l" no longer fails.
      Reported-by: default avatarChengguang Xu <cgxu519@gmx.com>
      Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
      Cc: stable@vger.kernel.org
    • Theodore Ts'o's avatar
      ext4: avoid arithemetic overflow that can trigger a BUG · bcd8e91f
      Theodore Ts'o authored
      A maliciously crafted file system can cause an overflow when the
      results of a 64-bit calculation is stored into a 32-bit length
      https://bugzilla.kernel.org/show_bug.cgi?id=200623Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
      Reported-by: default avatarWen Xu <wen.xu@gatech.edu>
      Cc: stable@vger.kernel.org
  3. 27 Aug, 2018 3 commits
  4. 04 Aug, 2018 1 commit
  5. 02 Aug, 2018 2 commits
  6. 01 Aug, 2018 2 commits
  7. 29 Jul, 2018 29 commits