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Re: [PATCH v8 10/20] jobs: add job lock in find_* functions


From: Stefan Hajnoczi
Subject: Re: [PATCH v8 10/20] jobs: add job lock in find_* functions
Date: Tue, 5 Jul 2022 09:03:48 +0100

On Wed, Jun 29, 2022 at 10:15:28AM -0400, Emanuele Giuseppe Esposito wrote:
> Both blockdev.c and job-qmp.c have TOC/TOU conditions, because
> they first search for the job and then perform an action on it.
> Therefore, we need to do the search + action under the same
> job mutex critical section.
> 
> Note: at this stage, job_{lock/unlock} and job lock guard macros
> are *nop*.
> 
> Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
> ---
>  blockdev.c | 67 +++++++++++++++++++++++++++++++++++++-----------------
>  job-qmp.c  | 55 ++++++++++++++++++++++++++++++--------------
>  2 files changed, 84 insertions(+), 38 deletions(-)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

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