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authorMarkus Armbruster2014-01-29 18:47:39 +0100
committerPaolo Bonzini2014-02-22 10:02:23 +0100
commit7ef8cf9a0861b6f67f5e57428478c31bfd811651 (patch)
treedc837d92eb0d893fab0bebd6a402ed43f52bf186 /hw
parentscsi: report thin provisioning errors with werror=report (diff)
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scsi-bus: Fix transfer length for VERIFY with BYTCHK=11b
The transfer length depends on field BYTCHK, which is encoded in byte 1, bits 1..2. However, the guard for for case BYTCHK=11b doesn't work, and we get case 01b instead. Fix it. Note that since emulated scsi-hd fails the command outright, it takes SCSI passthrough of a device that actually implements VERIFY with BYTCHK=11b to make the bug bite. Screwed up in commit d12ad44. Spotted by Coverity. Cc: qemu-stable@nongnu.org Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw')
-rw-r--r--hw/scsi/scsi-bus.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
index 054a7d407a..50a0acf1fe 100644
--- a/hw/scsi/scsi-bus.c
+++ b/hw/scsi/scsi-bus.c
@@ -909,7 +909,7 @@ static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
case VERIFY_16:
if ((buf[1] & 2) == 0) {
cmd->xfer = 0;
- } else if ((buf[1] & 4) == 1) {
+ } else if ((buf[1] & 4) != 0) {
cmd->xfer = 1;
}
cmd->xfer *= dev->blocksize;