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BUG_ON on kernel misbehavior on A100U2W driver

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With broken Sparc64 IOMMU accounting, the kernel submits larger requests
then allowed.  Better to crash on BUG than corrupt memory.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mikulas Patocka 2008-07-15 17:18:38 -04:00 committed by Linus Torvalds
parent 56d387ec21
commit a5db33411a
1 changed files with 1 additions and 0 deletions
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drivers/scsi/a100u2w.c
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@ -866,6 +866,7 @@ static void inia100_build_scb(struct orc_host * host, struct orc_scb * scb, stru
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) {