Guest writes to a readonly register trigger the assert in intel_hda_reg_write(). Add a check and just ignore them.
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1628433 Signed-off-by: Gerd Hoffmann <kra...@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilb...@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <phi...@redhat.com> --- hw/audio/intel-hda.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/audio/intel-hda.c b/hw/audio/intel-hda.c index 23a2cf6484..33e333cc26 100644 --- a/hw/audio/intel-hda.c +++ b/hw/audio/intel-hda.c @@ -23,6 +23,7 @@ #include "hw/pci/msi.h" #include "qemu/timer.h" #include "qemu/bitops.h" +#include "qemu/log.h" #include "hw/audio/soundhw.h" #include "intel-hda.h" #include "intel-hda-defs.h" @@ -929,6 +930,11 @@ static void intel_hda_reg_write(IntelHDAState *d, const IntelHDAReg *reg, uint32 if (!reg) { return; } + if (!reg->wmask) { + qemu_log_mask(LOG_GUEST_ERROR, "intel-hda: write to r/o reg %s\n", + reg->name); + return; + } if (d->debug) { time_t now = time(NULL); -- 2.9.3