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From c0ee1527358474c75067993d1bb233ad3a4ee081 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Philippe=20Mathieu-Daud=C3=A9?= <philmd@redhat.com>
Date: Thu, 16 Dec 2021 11:24:56 +0100
Subject: [PATCH] dma: Have dma_buf_rw() take a void pointer
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit
DMA operations are run on any kind of buffer, not arrays of
uint8_t. Convert dma_buf_rw() to take a void pointer argument
to save us pointless casts to uint8_t *.
CVE: CVE-2021-3611
Upstream-Status: Backport [https://git.qemu.org/?p=qemu.git;a=commit;h=c0ee1527358474c75067993d1bb233ad3a4ee081]
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211223115554.3155328-8-philmd@redhat.com>
Signed-off-by: Bhabu Bindu <bhabu.bindu@kpit.com>
---
softmmu/dma-helpers.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c
index 3c06a2f..09e2999 100644
--- a/softmmu/dma-helpers.c
+++ b/softmmu/dma-helpers.c
@@ -294,9 +294,10 @@ BlockAIOCB *dma_blk_write(BlockBackend *blk,
}
-static uint64_t dma_buf_rw(uint8_t *ptr, int32_t len, QEMUSGList *sg,
+static uint64_t dma_buf_rw(void *buf, int32_t len, QEMUSGList *sg,
DMADirection dir)
{
+ uint8_t *ptr = buf;
uint64_t resid;
int sg_cur_index;
--
1.8.3.1
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