Just in case there's still a way how a guest can read out buffers when it's not
supposed to, let's zero the buffers during initialisation so that we don't leak
information to the guest.
Signed-off-by: Kevin Wolf <kw...@redhat.com>
Reviewed-by: Markus Armbruster <arm...@redhat.com>
---
hw/ide/core.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/hw/ide/core.c b/hw/ide/core.c
index a29ae9f..d145b19 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1789,9 +1789,13 @@ static void ide_init1(IDEBus *bus, int unit)
s->unit = unit;
s->drive_serial = drive_serial++;
/* we need at least 2k alignment for accessing CDROMs using O_DIRECT */
- s->io_buffer = qemu_memalign(2048, IDE_DMA_BUF_SECTORS*512 + 4);
s->io_buffer_total_len = IDE_DMA_BUF_SECTORS*512 + 4;
+ s->io_buffer = qemu_memalign(2048, s->io_buffer_total_len);
+ memset(s->io_buffer, 0, s->io_buffer_total_len);
+
s->smart_selftest_data = qemu_blockalign(s->bs, 512);
+ memset(s->smart_selftest_data, 0, 512);
+
s->sector_write_timer = qemu_new_timer_ns(vm_clock,
ide_sector_write_timer_cb, s);
}
--
1.7.6
