dont-leave-crtime-uninitialized

   1 ext4: don't leave i_crtime.tv_sec uninitialized
   2
   3 If the i_crtime field is not present in the inode, don't leave the
   4 field uninitialized.
   5
   6 Fixes: ef7f38359 ("ext4: Add nanosecond timestamps")
   7 Reported-by: Vegard Nossum <vegard.nossum@oracle.com>
   8 Tested-by: Vegard Nossum <vegard.nossum@oracle.com>
   9 Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
  10 Cc: stable@vger.kernel.org
  11 ---
  12  fs/ext4/ext4.h | 2 ++
  13  1 file changed, 2 insertions(+)
  14
  15 diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
  16 index ece5556..d3a534f 100644
  17 --- a/fs/ext4/ext4.h
  18 +++ b/fs/ext4/ext4.h
  19 @@ -771,6 +771,8 @@ do {                                                                               \
  20         if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime))                      \
  21                 (einode)->xtime.tv_sec =                                       \
  22                         (signed)le32_to_cpu((raw_inode)->xtime);               \
  23 +       else                                                                   \
  24 +               (einode)->xtime.tv_sec = 0;                                    \
  25         if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime ## _extra))            \
  26                 ext4_decode_extra_time(&(einode)->xtime,                       \
  27                                        raw_inode->xtime ## _extra);            \