Re: [Qemu-devel] [PATCH v2] Don't allow multiwrites against a block device without underlying medium

[Stefan Hajnoczi]

On Mon, Mar 7, 2011 at 4:01 PM, Ryan Harper <address@hidden> wrote:
> If the block device has been closed, we no longer have a medium to submit
> IO against, check for this before submitting io.  This prevents a segfault
> further in the code where we dereference elements of the block driver.
>
> Signed-off-by: Ryan Harper <address@hidden>
> ---
> v1->v2:
>    - move bs->drv check to top of function to match other bdrv_
>    functions
>    - fill out reqs response with error code before
>      returning -1.
>
>  block.c |    8 ++++++++
>  1 files changed, 8 insertions(+), 0 deletions(-)

Signed-off-by: Stefan Hajnoczi <address@hidden>