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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2017-11-27 09:50:17 -0800 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2017-11-30 08:43:52 -0800 |
| commit | 22a6c83777ac7c17d6c63891beeeac24cf5da450 (patch) | |
| tree | 184fcabec17ccda0b57399d2105f91344d7d7fda | |
| parent | 712d361d59efa6349a9538f4fd9a49073f0e8127 (diff) | |
| download | linux-22a6c83777ac7c17d6c63891beeeac24cf5da450.tar.gz linux-22a6c83777ac7c17d6c63891beeeac24cf5da450.tar.bz2 linux-22a6c83777ac7c17d6c63891beeeac24cf5da450.zip | |
xfs: ubsan fixes
Fix some complaints from the UBSAN about signed integer addition overflows.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
| -rw-r--r-- | fs/xfs/xfs_aops.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index a3eeaba156c5..b0cccf8a81a8 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -399,7 +399,7 @@ xfs_map_blocks( (ip->i_df.if_flags & XFS_IFEXTENTS)); ASSERT(offset <= mp->m_super->s_maxbytes); - if (offset + count > mp->m_super->s_maxbytes) + if ((xfs_ufsize_t)offset + count > mp->m_super->s_maxbytes) count = mp->m_super->s_maxbytes - offset; end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count); offset_fsb = XFS_B_TO_FSBT(mp, offset); @@ -1265,7 +1265,7 @@ xfs_map_trim_size( if (mapping_size > size) mapping_size = size; if (offset < i_size_read(inode) && - offset + mapping_size >= i_size_read(inode)) { + (xfs_ufsize_t)offset + mapping_size >= i_size_read(inode)) { /* limit mapping to block that spans EOF */ mapping_size = roundup_64(i_size_read(inode) - offset, i_blocksize(inode)); @@ -1312,7 +1312,7 @@ xfs_get_blocks( lockmode = xfs_ilock_data_map_shared(ip); ASSERT(offset <= mp->m_super->s_maxbytes); - if (offset + size > mp->m_super->s_maxbytes) + if ((xfs_ufsize_t)offset + size > mp->m_super->s_maxbytes) size = mp->m_super->s_maxbytes - offset; end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + size); offset_fsb = XFS_B_TO_FSBT(mp, offset); |