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    SubjectSCSI tape crashes (was Re: BUG() in asm/pci.h:142 with 2.4.13)
    From
       From: Jens Axboe <axboe@suse.de>
    Date: Thu, 25 Oct 2001 19:32:48 +0200

    On Thu, Oct 25 2001, Christian Hammers wrote:
    > This patch did not prevent the crash. Again immediately after rewinding the
    > tape when it began to write. I'll try now the 2.4.12-ac6... and it works.

    Ok, someone else is meddling with the scatterlist then. I'll take a 2nd
    look.

    Can people try out this patch? I believe this will fix the bug.

    --- drivers/scsi/st.c.~1~ Sun Oct 21 02:47:53 2001
    +++ drivers/scsi/st.c Thu Oct 25 17:23:45 2001
    @@ -3233,6 +3233,7 @@
    break;
    }
    }
    + tb->sg[0].page = NULL;
    if (tb->sg[segs].address == NULL) {
    kfree(tb);
    tb = NULL;
    @@ -3264,6 +3265,7 @@
    tb = NULL;
    break;
    }
    + tb->sg[segs].page = NULL;
    tb->sg[segs].length = b_size;
    got += b_size;
    segs++;
    @@ -3337,6 +3339,7 @@
    normalize_buffer(STbuffer);
    return FALSE;
    }
    + STbuffer->sg[segs].page = NULL;
    STbuffer->sg[segs].length = b_size;
    STbuffer->sg_segs += 1;
    got += b_size;
    -
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