[PATCH 1/2] eal: fix failure race and behavior of thread create

[David Marchand]

On Thu, Mar 2, 2023 at 7:44 PM Tyler Retzlaff
<roretzla at linux.microsoft.com> wrote:
>
> In rte_thread_create setting affinity after pthread_create may fail.
> Such a failure should result in the entire rte_thread_create failing
> but doesn't.
>
> Additionally if there is a failure to set affinity a race exists where
> the creating thread will free ctx and depending on scheduling of the new
> thread it may also free ctx (double free).
>
> Resolve both of the above issues by using the pthread_setaffinity_np
> prior to thread creation to set the affinity of the created thread. By
> doing this no failure paths exist after pthread_create returns
> successfully.
>
> Fixes: ce6e911d20f6 ("eal: add thread lifetime API")
> Cc: stable at dpdk.org
> Cc: roretzla at linux.microsoft.com
>
> Signed-off-by: Tyler Retzlaff <roretzla at linux.microsoft.com>

Reviewed-by: David Marchand <david.marchand at redhat.com>


-- 
David Marchand