Re: [PATCH] qemu: Fix memory leak in qemuDomainBlockJobSetSpeed()

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On 06/25/2018 04:15 PM, w00251574 wrote:
> Subject: [PATCH] qemu: Fix memory leak in qemuDomainBlockJobSetSpeed()
> 
> fix 'device' leak in qemuDomainBlockJobSetSpeed
> 
> Signed-off-by: Jie Wang <wangjie88.huawei.com>
> ---
>  src/qemu/qemu_driver.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
> index 921aafcd79..b45c26eb3b 100644
> --- a/src/qemu/qemu_driver.c
> +++ b/src/qemu/qemu_driver.c
> @@ -17395,6 +17395,7 @@ qemuDomainBlockJobSetSpeed(virDomainPtr dom,
>      qemuDomainObjEndJob(driver, vm);
>  
>   cleanup:
> +    VIR_FREE(device);
>      virDomainObjEndAPI(&vm);
>  
>      return ret;
> 

Almost. @device is type of 'const char *' and that needs to change (one
should never free a const string). Secondly, with this change there are
multiple ways to get to @cleanup label without @device being set to
anything (and thus we might end up freeing random pointer).

Fixed and pushed.

Michal

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