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| author | Gerd Hoffmann <kraxel@redhat.com> | 2018-11-23 07:39:57 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2018-11-27 07:47:57 +0100 |
| commit | 7ec910675929a593c9890f412125c31c578cde6e (patch) | |
| tree | 9da6f05703d37f5fd208457b81e069300cc2ff92 /hw/audio | |
| parent | b7ee9e4970bd76ca181ae6ea853c350e039eb71d (diff) | |
| download | qemu-7ec910675929a593c9890f412125c31c578cde6e.zip qemu-7ec910675929a593c9890f412125c31c578cde6e.tar.gz qemu-7ec910675929a593c9890f412125c31c578cde6e.tar.bz2 | |
audio/hda: fix guest triggerable assert
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 <kraxel@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20181123063957.9515-1-kraxel@redhat.com
Diffstat (limited to 'hw/audio')
| -rw-r--r-- | hw/audio/intel-hda.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/audio/intel-hda.c b/hw/audio/intel-hda.c index 23a2cf6..33e333c 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); |