With broken Sparc64 IOMMU accounting, the kernel submits larger requests
then allowed. Better to crash on BUG than corrupt memory. This needs to be
fixed in sparc64 code.
For description of the crashes, see:
http://www.uwsg.indiana.edu/hypermail/linux/kernel/0807.1/1465.html
Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
---
drivers/scsi/a100u2w.c | 1 +
1 file changed, 1 insertion(+)
Index: linux-2.6.26-devel/drivers/scsi/a100u2w.c
===================================================================
--- linux-2.6.26-devel.orig/drivers/scsi/a100u2w.c 2008-07-14 20:03:43.000000000 +0200
+++ linux-2.6.26-devel/drivers/scsi/a100u2w.c 2008-07-15 00:46:02.000000000 +0200
@@ -866,6 +866,7 @@ static void inia100_build_scb(struct orc
count_sg = scsi_dma_map(cmd);
BUG_ON(count_sg < 0);
+ BUG_ON(count_sg > TOTAL_SG_ENTRY);
/* Build the scatter gather lists */
if (count_sg) {
--
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