On Mon, 2017-09-18 at 13:49 +0300, Meelis Roos wrote: > Hello, I decided to widen the coverage of my kernel testbed and put some > FC cards into servers. This one is a PCI-X QLA2340 in HP Proliant DL 380 > G4 (first 64-bit generation of Proliants). I got a UBSAN warning from > qla2xxx before probing for the firmware. Would it be possible for you to test the (completely untested) patch below? diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index 16c43bd9bb83..4cdda66a9f32 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -272,7 +272,7 @@ qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0) struct device_reg_2xxx __iomem *reg = &ha->iobase->isp; /* Read all mbox registers? */ - mboxes = (1 << ha->mbx_count) - 1; + mboxes = (ha->mbx_count != 32 ? 1U << ha->mbx_count : 0) - 1U; if (!ha->mcp) ql_dbg(ql_dbg_async, vha, 0x5001, "MBX pointer ERROR.\n"); else Thanks, Bart.
