Le 2003-08-25, Matt écrivait :
> db> trace
> free_hcb(c40f1040,c03c7e40,101,c41d5800,c1528130) at free_hcb+0x2e
> atapi_action(c40f1440,c41d5800,c0132b33,c41db000,c41d5800) at
> atapi_action+ox56c
OK, so that presumably means we're going through action_oom, and so you
should have had one of the following messages on the console:
printf("cannot allocate ATAPI/CAM hcb\n");
printf("cannot allocate ATAPI/CAM request\n");
printf("cannot allocate ATAPI/CAM buffer\n");
It would be interesting to know which, if any, of these messages you
saw. Also, please try whether the following patch improves the
situation:
Index: atapi-cam.c
===================================================================
RCS file: /home/ncvs/src/sys/dev/ata/atapi-cam.c,v
retrieving revision 1.20
diff -u -r1.20 atapi-cam.c
--- atapi-cam.c 24 Aug 2003 17:48:05 -0000 1.20
+++ atapi-cam.c 25 Aug 2003 17:24:44 -0000
@@ -59,7 +59,7 @@
int lun;
union ccb *ccb;
int flags;
-#define DOING_AUTOSENSE 1
+#define QUEUED 0x0001;
char *dxfer_alloc;
TAILQ_ENTRY(atapi_hcb) chain;
@@ -394,7 +394,7 @@
/* scatter-gather not supported */
xpt_print_path(ccb_h->path);
printf("ATAPI/CAM does not support scatter-gather yet!\n");
- break;
+ goto action_invalid;
}
if ((hcb = allocate_hcb(softc, unit, bus, ccb)) == NULL) {
@@ -464,8 +464,8 @@
if ((ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_IN && (len & 1)) {
/* ATA always transfers an even number of bytes */
- if (!(buf = hcb->dxfer_alloc = malloc(++len, M_ATACAM,
- M_NOWAIT | M_ZERO)))
+ if ((buf = hcb->dxfer_alloc = malloc(++len, M_ATACAM,
+ M_NOWAIT | M_ZERO)) == NULL)
printf("cannot allocate ATAPI/CAM buffer\n");
goto action_oom;
}
@@ -494,6 +494,7 @@
}
TAILQ_INSERT_TAIL(&softc->pending_hcbs, hcb, chain);
+ hcb->flags |= QUEUED;
ata_queue_request(request);
return;
@@ -519,9 +520,13 @@
return;
action_invalid:
- ccb_h->status = CAM_REQ_INVALID;
- xpt_done(ccb);
- return;
+ if (request != NULL)
+ ata_free_request(request);
+ if (hcb != NULL)
+ free_hcb(hcb);
+ ccb_h->status = CAM_REQ_INVALID;
+ xpt_done(ccb);
+ return;
}
static void
@@ -686,7 +691,8 @@
static void
free_hcb(struct atapi_hcb *hcb)
{
- TAILQ_REMOVE(&hcb->softc->pending_hcbs, hcb, chain);
+ if ((hcb->flags & QUEUED) != 0)
+ TAILQ_REMOVE(&hcb->softc->pending_hcbs, hcb, chain);
if (hcb->dxfer_alloc != NULL)
free(hcb->dxfer_alloc, M_ATACAM);
free(hcb, M_ATACAM);
--
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