On Thu, 2016-05-12 at 19:02 +0300, Meelis Roos wrote: > This is from a dual-AthlonMP 32-bit x86 system with onboard Adaptec > SCSI > controller, once during bootup. > > [ 4.896307] > ===================================================================== > =========== > [ 4.896471] UBSAN: Undefined behaviour in > drivers/scsi/aic7xxx/aic7xxx_core.c:2831:31 > [ 4.896629] shift exponent -1 is negative Is this some sort of false positive? The shift in question is devinfo->target_mask = (0x01 << devinfo->target_offset); The code which calls this in ahc_linux_initialize_scsi_bus() looks to be looping from 0-16 (or variations). Since the value passed in is unsigned, it would have to be set to ~0, which doesn't seem possible. James -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
