Message ID | 1426348844-8793-1-git-send-email-sw@weilnetz.de |
---|---|
State | Accepted |
Headers | show |
On Sat, Mar 14, 2015 at 05:00:44PM +0100, Stefan Weil wrote: > The shift operation on nlb gives a 32 bit result if no type cast is > applied. This bug was reported by Coverity. > > Signed-off-by: Stefan Weil <sw@weilnetz.de> > --- > hw/block/nvme.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) Thanks, applied to my block tree: https://github.com/stefanha/qemu/commits/block Stefan
diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 0f3dfb9..1e07166 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -222,7 +222,7 @@ static uint16_t nvme_rw(NvmeCtrl *n, NvmeNamespace *ns, NvmeCmd *cmd, uint8_t lba_index = NVME_ID_NS_FLBAS_INDEX(ns->id_ns.flbas); uint8_t data_shift = ns->id_ns.lbaf[lba_index].ds; - uint64_t data_size = nlb << data_shift; + uint64_t data_size = (uint64_t)nlb << data_shift; uint64_t aio_slba = slba << (data_shift - BDRV_SECTOR_BITS); int is_write = rw->opcode == NVME_CMD_WRITE ? 1 : 0;
The shift operation on nlb gives a 32 bit result if no type cast is applied. This bug was reported by Coverity. Signed-off-by: Stefan Weil <sw@weilnetz.de> --- hw/block/nvme.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)