[PULL,09/20] tests/qtest/ahci-test.c: Calculate iso_size with 64-bit arithmetic

Commit Message

Thomas Huth May 14, 2021, 12:15 p.m. UTC

From: Peter Maydell <[e-mail]>

Coverity notes that when calculating the 64-bit iso_size value in
ahci_test_cdrom() we actually only do it with 32-bit arithmetic.
This doesn't matter for the current test code because nsectors is
always small; but adding the cast avoids the coverity complaints.

Fixes: Coverity CID 1432343
Signed-off-by: Peter Maydell <[e-mail]>
Reviewed-by: Philippe Mathieu-Daudé <[e-mail]>
Reviewed-by: John Snow <[e-mail]>
Message-Id: <[e-mail]>
Signed-off-by: Thomas Huth <[e-mail]>
---
 tests/qtest/ahci-test.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/tests/qtest/ahci-test.c b/tests/qtest/ahci-test.c
index 5e1954852e..8073ccc205 100644
--- a/tests/qtest/ahci-test.c
+++ b/tests/qtest/ahci-test.c
@@ -1491,14 +1491,14 @@  static void ahci_test_cdrom(int nsectors, bool dma, uint8_t cmd,
     char *iso;
     int fd;
     AHCIOpts opts = {
-        .size = (ATAPI_SECTOR_SIZE * nsectors),
+        .size = ((uint64_t)ATAPI_SECTOR_SIZE * nsectors),
         .atapi = true,
         .atapi_dma = dma,
         .post_cb = ahci_cb_cmp_buff,
         .set_bcl = override_bcl,
         .bcl = bcl,
     };
-    uint64_t iso_size = ATAPI_SECTOR_SIZE * (nsectors + 1);
+    uint64_t iso_size = (uint64_t)ATAPI_SECTOR_SIZE * (nsectors + 1);
 
     /* Prepare ISO and fill 'tx' buffer */
     fd = prepare_iso(iso_size, &tx, &iso);