Showing error 1920

User: Jiri Slaby
Error type: Invalid Pointer Dereference
Error type description: A pointer which is invalid is being dereferenced
File location: drivers/scsi/lpfc/lpfc_els.c
Line in file: 2744
Project: Linux Kernel
Project version: 2.6.28
Tools: Cppcheck (1.59)
Entered: 2013-10-17 18:38:34 UTC

Source: 

2714                         cmd, did, cmdiocb->retry, irsp->ulpStatus,
2715                         irsp->un.ulpWord[4]);
2716        }
2717        return 0;
2718}
2719
2720/**
2721 * lpfc_els_free_data: Free lpfc dma buffer and data structure with an iocb.
2722 * @phba: pointer to lpfc hba data structure.
2723 * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
2724 *
2725 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
2726 * associated with a command IOCB back to the lpfc DMA buffer pool. It first
2727 * checks to see whether there is a lpfc DMA buffer associated with the
2728 * response of the command IOCB. If so, it will be released before releasing
2729 * the lpfc DMA buffer associated with the IOCB itself.
2730 *
2731 * Return code
2732 *   0 - Successfully released lpfc DMA buffer (currently, always return 0)
2733 **/
2734static int
2735lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
2736{
2737        struct lpfc_dmabuf *buf_ptr;
2738
2739        /* Free the response before processing the command. */
2740        if (!list_empty(&buf_ptr1->list)) {
2741                list_remove_head(&buf_ptr1->list, buf_ptr,
2742                                 struct lpfc_dmabuf,
2743                                 list);
2744                lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2745                kfree(buf_ptr);
2746        }
2747        lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
2748        kfree(buf_ptr1);
2749        return 0;
2750}
2751
2752/**
2753 * lpfc_els_free_bpl: Free lpfc dma buffer and data structure with bpl.
2754 * @phba: pointer to lpfc hba data structure.
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