Showing error 1665

User: Jiri Slaby
Error type: Invalid Pointer Dereference
Error type description: A pointer which is invalid is being dereferenced
File location: fs/xfs/xfs_da_btree.c
Line in file: 2431
Project: Linux Kernel
Project version: 2.6.28
Tools: Smatch (1.59)
Entered: 2013-09-10 07:54:05 UTC

Source: 

2401                 */
2402                else if (!(XFS_BUF_ISDONE(bp)))
2403                  XFS_BUF_DONE(bp);
2404        }
2405        ASSERT(last < off);
2406}
2407
2408/*
2409 * Release dabuf from a transaction.
2410 * Have to free up the dabuf before the buffers are released,
2411 * since the synchronization on the dabuf is really the lock on the buffer.
2412 */
2413void
2414xfs_da_brelse(xfs_trans_t *tp, xfs_dabuf_t *dabuf)
2415{
2416        xfs_buf_t        *bp;
2417        xfs_buf_t        **bplist;
2418        int                i;
2419        int                nbuf;
2420
2421        ASSERT(dabuf->nbuf && dabuf->data && dabuf->bbcount && dabuf->bps[0]);
2422        if ((nbuf = dabuf->nbuf) == 1) {
2423                bplist = &bp;
2424                bp = dabuf->bps[0];
2425        } else {
2426                bplist = kmem_alloc(nbuf * sizeof(*bplist), KM_SLEEP);
2427                memcpy(bplist, dabuf->bps, nbuf * sizeof(*bplist));
2428        }
2429        xfs_da_buf_done(dabuf);
2430        for (i = 0; i < nbuf; i++)
2431                xfs_trans_brelse(tp, bplist[i]);
2432        if (bplist != &bp)
2433                kmem_free(bplist);
2434}
2435
2436/*
2437 * Invalidate dabuf from a transaction.
2438 */
2439void
2440xfs_da_binval(xfs_trans_t *tp, xfs_dabuf_t *dabuf)
2441{
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