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| author | Eric Sandeen <sandeen@redhat.com> | 2016-02-08 11:22:58 +1100 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2016-02-08 11:22:58 +1100 |
| commit | a484bcdd1321b86de29a2969399da1fa6e9c7648 (patch) | |
| tree | 46d5bc1493c4456f6b0231f0779b03369cf779d4 /fs/xfs/xfs_dquot.c | |
| parent | 926132c0257a5a8d149a6a395cc3405e55420566 (diff) | |
| download | blackbird-op-linux-a484bcdd1321b86de29a2969399da1fa6e9c7648.tar.gz blackbird-op-linux-a484bcdd1321b86de29a2969399da1fa6e9c7648.zip | |
xfs: don't overflow quota ID when initializing dqblk
Quota IDs are unsigned, and so we can pass in values up
to 2^32-1. But if we try to initialize a block containing
values over MAX_INT, curid will overflow and assert.
curid holds a quota ID, so give it the proper
xfs_dqid_t type (and remove the now-impossible ASSERT).
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_dquot.c')
| -rw-r--r-- | fs/xfs/xfs_dquot.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 9c44d38dcd1f..c9c7c2d89245 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -232,7 +232,8 @@ xfs_qm_init_dquot_blk( { struct xfs_quotainfo *q = mp->m_quotainfo; xfs_dqblk_t *d; - int curid, i; + xfs_dqid_t curid; + int i; ASSERT(tp); ASSERT(xfs_buf_islocked(bp)); @@ -243,7 +244,6 @@ xfs_qm_init_dquot_blk( * ID of the first dquot in the block - id's are zero based. */ curid = id - (id % q->qi_dqperchunk); - ASSERT(curid >= 0); memset(d, 0, BBTOB(q->qi_dqchunklen)); for (i = 0; i < q->qi_dqperchunk; i++, d++, curid++) { d->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC); |
