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| author | Mikulas Patocka <mpatocka@redhat.com> | 2008-07-15 17:18:38 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-15 14:30:56 -0700 |
| commit | a5db33411ae762e597bfcde6bb9d0c8c2ea9c0eb (patch) | |
| tree | fca5929eddc432092f0c444ffc672058effb78b0 | |
| parent | 56d387ec210049be2fdb0fe26ba6d6de1b3c1b15 (diff) | |
| download | linux-3.10-a5db33411ae762e597bfcde6bb9d0c8c2ea9c0eb.tar.gz linux-3.10-a5db33411ae762e597bfcde6bb9d0c8c2ea9c0eb.tar.bz2 linux-3.10-a5db33411ae762e597bfcde6bb9d0c8c2ea9c0eb.zip | |
BUG_ON on kernel misbehavior on A100U2W driver
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>
| -rw-r--r-- | drivers/scsi/a100u2w.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/a100u2w.c b/drivers/scsi/a100u2w.c index 1e8bdd45783..f5051f4301d 100644 --- a/drivers/scsi/a100u2w.c +++ b/drivers/scsi/a100u2w.c @@ -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) { |