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Re: [PATCH] s390x: protvirt: Fix stray error_report_err in s390_machine_


From: Cornelia Huck
Subject: Re: [PATCH] s390x: protvirt: Fix stray error_report_err in s390_machine_protect
Date: Thu, 26 Mar 2020 17:55:51 +0100

On Thu, 26 Mar 2020 10:05:05 -0400
Janosch Frank <address@hidden> wrote:

> In case the protection of the machine fails at s390_pv_vm_enable(),
> we'll currently report the local_error variable. Problem is that
> there's no migration blocker error that we can report at this point so
> the pointer is always NULL which leads to a SEGFAULT.
> 
> Let's remove the error report.

Yes, s390_pvm_vm_enable() will already moan on error.

> 
> Signed-off-by: Janosch Frank <address@hidden>
> Reported-by: Marc Hartmayer <address@hidden>
> Fixes: 520935eedf941da3 ("s390x: protvirt: Add migration blocker")

Note to self: update commit ID before I send a pull request (I will at
least need to rebase for a headers update...)

> ---
>  hw/s390x/s390-virtio-ccw.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
> index 3cf19c99f3468b7d..855ecf370d6e82fa 100644
> --- a/hw/s390x/s390-virtio-ccw.c
> +++ b/hw/s390x/s390-virtio-ccw.c
> @@ -358,7 +358,6 @@ static int s390_machine_protect(S390CcwMachineState *ms)
>      rc = s390_pv_vm_enable();
>      if (rc) {
>          qemu_balloon_inhibit(false);
> -        error_report_err(local_err);
>          migrate_del_blocker(pv_mig_blocker);
>          error_free_or_abort(&pv_mig_blocker);
>          return rc;

Thanks, applied.




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