Re: [Qemu-devel] [PATCH] migration: don't use uninitialized variables

[Luiz Capitulino <lcapitulino@redhat.com>]

On Fri, 19 Jul 2013 11:36:41 +0900
Pawit Pornkitprasan <p.pawit@gmail.com> wrote:

> The qmp_migrate method uses the 'blk' and 'inc' parameter without
> checking if they're valid or not (they may be uninitialized if
> command is received via QMP)
> 
> Signed-off-by: Pawit Pornkitprasan <p.pawit@gmail.com>
> ---
>  migration.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/migration.c b/migration.c
> index 9f5a423..f3d1ff7 100644
> --- a/migration.c
> +++ b/migration.c
> @@ -385,8 +385,8 @@ void qmp_migrate(const char *uri, bool has_blk, bool blk,
>      MigrationParams params;
>      const char *p;
>  
> -    params.blk = blk;
> -    params.shared = inc;
> +    params.blk = has_blk && blk;
> +    params.shared = has_inc && inc;

This doesn't apply anymore, can you rebase and resend?

By grepping around I can see that there are several instances of
this bug in other commands. I'm surprised we never got a single
bug report about this... Would you mind to fix all the instances?

>  
>      if (s->state == MIG_STATE_ACTIVE) {
>          error_set(errp, QERR_MIGRATION_ACTIVE);