[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH v7] virtio-blk: fix reference a pointer which might
From: |
zhanghailiang |
Subject: |
[Qemu-devel] [PATCH v7] virtio-blk: fix reference a pointer which might be freed |
Date: |
Mon, 18 Aug 2014 15:42:50 +0800 |
In function virtio_blk_handle_request, it may freed memory pointed by req,
So do not access member of req after calling this function.
Reviewed-by: Michael S. Tsirkin <address@hidden>
Reviewed-by: Stefan Hajnoczi <address@hidden>
Signed-off-by: zhanghailiang <address@hidden>
---
hw/block/virtio-blk.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
index c241c50..0e3925b 100644
--- a/hw/block/virtio-blk.c
+++ b/hw/block/virtio-blk.c
@@ -469,8 +469,9 @@ static void virtio_blk_dma_restart_bh(void *opaque)
s->rq = NULL;
while (req) {
+ VirtIOBlockReq *next = req->next;
virtio_blk_handle_request(req, &mrb);
- req = req->next;
+ req = next;
}
virtio_submit_multiwrite(s->bs, &mrb);
--
1.7.12.4
- [Qemu-devel] [PATCH v7] virtio-blk: fix reference a pointer which might be freed,
zhanghailiang <=